Instruction/ maintenance manual of the product 2625A Fluke
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® 2620A/2625A Hydra Series II Data Acquisition Unit Hydra Series II Data Logger Users Manual PN 686675 November 1997 © 1997 Fluke Corporation, Al l rights reserved.
LIMI TED W ARRANTY & LI MITATI O N OF LIABI LI TY Each Fluke product is warranted to be free fr om defects in material and workmanship under normal use and service. The warranty per iod is one year and begins on the date of shipment. Parts, product repair s and services are warranted for 90 days.
i Table of Contents Chapter Titl e Page 1 Introduction ........................................................................................ 1-1 The Hydra Series II Data Acquisition Unit ....................................................... 1-3 The Hydra Series II Data Logg er .
2620A/2625A Users M anual ii Using the Scan Function.................................................................................... 2-16 Reviewing Channel Data ................................................................................... 2-16 Viewing the Totalizer Count .
Contents (c ontinued) iii Autoprint: Com puter Interface Control .................................................... 4- 5 Autoprint: Output Format ......................................................................... 4-5 Memory Storage: Com puter I nterface Control .
2620A/2625A Users M anual iv Isolated and Shielded Sensor Config uration ............................................ 5-11 In More Detail ............................................................................................... 5- 12 6 Maintenance .
v List of Tables Table Titl e Page 1-1. Hydra Features ....................................................................................................... 1-4 1-2. Accessories .......................................................................
2620A/2625A Users M anual vi 6-3. Performance Tests (Voltage, Resistance, and Frequency ) .................................... 6-8 6-4. Perform ance Tests for Thermocouple Temperature Function (I PTS- 68/ITS- 90) . 6-13 6-5. Performance Tests for RTD Tem perature Function (Resistance) (DI N/I EC 751 Amendm ent 1) (I PTS-68) .
vii List of Figures Figure Titl e Page 2-1. Adjusting Handle ................................................................................................... 2-3 2-2. Front Panel .....................................................................
viii Caution THIS IS AN IEC SAFETY CLASS 1 PRODUCT. BEFORE USING, THE GROUND WIRE IN THE LINE CORD OR THE REAR PANEL BINDING POST MUST BE CONNECTED FOR SAFETY.
ix Safety Terms in t hi s M anual This instrument has been designed and tested in accordance with IEC publication 1010, Safety Requirements for Electrical Measuring, control and Laboratory Equipment.
2620A/2625A Users M anual x AC Power Source The instrument is intended to operate from an ac power source that will not apply more than 264V ac rms between the supply conductors or between either supply conductor and ground. A protective ground connection by way of the grounding conductor in the power cord is required for safe operation.
xi Getting Started Introduct ion This section will have you operating Hydra in a matter of minutes. All basic operating information is covered in this short Getting Started guide.
2620A/2625A Users M anual xii this example, "OFF" is lit if you’ re working w ith channel 0, and have already performed the Configuration Reset). 3. Press G , D to cycle through the choices for measurement function. For now, select "V AC", to set up the channel for A C voltage measurements.
Getting Starte d (c ontinued) xiii select the mode (“Mode” in right display) from “All” to output all scan data, “ALAr” to output only alarm data, or “trAnS” to output data scanned only when the Hydra goes into or out of alarm. Once the destination and mode have been set, enable Memory Storage by pressing: print.
2620A/2625A Users M anual xiv Note You cannot activate the Monitor function if the selected channel is set up as OFF; the instrument gives a long beep and ignores your request. The "MON" annunciator comes on, and the instrument starts taking measurements on the selected channel.
Getting Starte d (c ontinued) xv 20 . . . . . . . 0 LAST MIN MAX LAST MIN MAX oo24f.eps Press N or C to remove the Review data from the display when you’ re through. The remainder of this manual covers all aspects of using Hydra. Glance over the Table of Contents; you’ ll find that each section presents an additional layer of information.
2620A/2625A Users M anual xvi.
1-1 Chapter 1 Introduction Title Page The Hydra Series II Data Acquisition Unit ....................................................... 1-3 The Hydra Series II Data Logg er ...................................................................... 1-3 Options and Accessories .
2620A, 2625A Users M anual 1-2.
Introduction The Hydra Series II Data Acquisition Unit 1 1-3 Note This manual contains information and warnings that must be followed to ensure safe operation and retain the instrument in safe condition.
2620A, 2625A Users M anual 1-4 Table 1-1. Hydra Features • Channel Scanning Can be continuous s canning, sc anning at an interval time, single s cans, or triggered (internal or external) sc ans. • Channel Monitoring Make m easurements on a single channel and view these meas urements on the dis play.
Introduction Where to go From Here 1 1-5 Accessories Accessories available for the instrument are described in Table 1-2. Table 1-2. Accessories Model Description 80I-410 80i-1010 Clamp-On DC /AC Current Probes. 80J-10 Current Shunt. 2620A-05K Field-installable IEEE-488 Option k it (Hydra Data Acquisition Unit only ).
2620A, 2625A Users M anual 1-6 Gettin g Starte d Provides a quick introduction to instrument setup and operation. Chapter 1 Int r oduction Describes standard features, options, and accessories for the Fluke Hydra Series II Data Acquisition Unit and H ydra Series II Data Logger.
2-1 Chapter 2 Overview Title Page Introduction ....................................................................................................... 2-3 Setting Up the I nstrum ent ....................................................................
2620A, 2625A Users M anual 2-2.
Overview Introduction 2 2-3 Introduct ion Chapter 2 provides an overview of the major features of the instrument. Comprehensive details on all instrument features are found in Chapter 3 (for front panel operation) and Chapter 4 (for computer interface operation.
2620A, 2625A Users M anual 2-4 Line Power Warning To avoid shock hazard, connect t he i nstrument power cord t o a power receptacle w i t h eart h ground.
Overview Setting Up the Instrument 2 2-5 CAL ENABLE V 300V MAX POWER REVIEW LAST MAX MIN REM AUTO SCAN MON SET Mx+B FUNC ALARM ° C ° F RO mV AC DC x1Mk Hz LIMIT HI LO OFF CAL PRN EXT CH TR COM 12 CL.
2620A, 2625A Users M anual 2-6 REVIEW LAST MAX MIN REM AUTO SCAN MON x1Mk LIMIT HI LO OFF CAL PRN EXT SET Mx+B FUNC ALARM ° C ° F RO mV AC DC Hz CH TR 12 Ω F oo03f.eps Figure 2-3. Left Display REVIEW LAST MAX MIN REM AUTO SCAN MON SET Mx+B FUNC ALARM ° C ° F RO mV AC DC x1Mk Hz LIMIT HI LO OFF CAL PRN EXT CH TR 12 Ω F oo04f.
Overview Setting Up the Instrument 2 2-7 Table 2-1. Display Annunciators MON Indicates that the M onitor function is enabled. SCAN Indicates that the Sc an function is enabled. Scanning c an be enabled as a single scan (SING LE K Q ), with a sc an interval, with an alarm-triggered s can, or as an externally triggered s can.
2620A, 2625A Users M anual 2-8 Table 2-1. Display Annunciators (cont) "1" Lit when alarm limit 1 is being defined. Also lit when display ing a measurem ent value (LAST, Monitor) whic h has exc eeded alarm limit 1. "2" Lit when alarm limit 2 is being defined.
Overview Operating Modes 2 2-9 Input Channels The instrument provides one input (channel 0) on the front panel and 20 inputs (channels 1 .. 20) through a connector on the rear panel. Channels 0, 1, and 11 can measure a maximum of 300V; all other channels can measure a maximum of 150V.
2620A, 2625A Users M anual 2-10 • Active Mode if this mode was in effect prior to the cycling of power. Scanning, monitoring, or combined scanning/monitoring is resumed. • Inactive Mode if the instrument was in Inactive Mode or Configuration Mode prior to cycling of power.
Overview Front Panel Buttons 2 2-11 Front Pane l Buttons Go ahead and press any front panel button. The instrument always provides an audible response to each button press.
2620A, 2625A Users M anual 2-12 Table 2-2. Front Panel Pushbuttons (cont) M Turns the Monitor func tion on or off. I Allows you to c hange the scan interv al.
Overview Setting up a Channel 2 2-13 1. Select a channel to set up: G D Look for the desired channel number in the right display. 2. Press the following buttons to change the setup: F SET and FUNC come on bright, along w ith the present setting for measurement function.
2620A, 2625A Users M anual 2-14 Note Any old alarm status/limits, R eview array values, or scaling parameters are automatically cleared whenever you change a channel’ s function. Setting Ala rm Limits a nd Mx+B Scaling Va lues Alarm limits and Mx+B scaling values are set in a manner very similar to that used for the channel function.
Overview Setting the Scan Interval 2 2-15 Mx+B S caling The menu for setting Mx+B scaling values takes you through the following steps: • Set the M value (sign and number). • Set the decimal point location for the M value. • Set the multiplier for the M value (m, x1, k, M).
2620A, 2625A Users M anual 2-16 Using the Monit or Funct i on The Monitor function repeatedly measures the displayed channel. Press M to activate the Monitor function. Use G and D to change the monitored channel; undefined channels (those set to OFF) are automatically skipped over.
Overview Viewing the Totalizer Count 2 2-17 To clear out the contents of the Review array, press N to call the review data up to the display, and then select CLEAR ( K N ). The entire array is then cleared. All array values, including the displayed value, are changed to "-----".
2620A, 2625A Users M anual 2-18 Using the Rack Mount Kit Use the M00-200-634 Rack Mount Kit to mount the instrument in a standard 19-inch rack. First, rotate the two bottom feet on the instrument 180 degrees so that the support pads point up. Then install the instrument per the instructions provided with the Rack Mount Kit.
3-1 Chapter 3 Operating the Instrument from the Front Panel Title Page Introduction ....................................................................................................... 3-3 Operating Modes ...........................................
2620A, 2625A Users M anual 3-2 Front Panel Review Only Function ............................................................... 3-26 Front Panel Monitor Only Function .............................................................. 3-26 Com puter Interface- Initiated Lockouts .
Operating the Instrument from the Front P anel Introduction 3 3-3 Introduct ion Chapter 3 describes how to use the instrument features that were introduced in Chapter 2. The introductory information in Chapter 2 is designed to give you a feel for the instrument’ s controls and display.
2620A, 2625A Users M anual 3-4 Other Disp layed Data An array of "MIN", "MA X", and "LAST" values for each channel is updated whenever scan measurements are taken. This Review array can be displayed from Active or Inactive (but not Configuration) Mode by pressing N .
Operating the Instrument from the Front P anel Channel Configuration 3 3-5 Table 3-1. Configuration Reset Settings Perform a Configuration Res et to restore these conditions by press ing and holding C while cy cling POWER ON. Channels 0 - 20: OFF. Measurem ent rate: Slow.
2620A, 2625A Users M anual 3-6 through both a known resistance and the sensed resistance. The resulting voltages are measured and appropriate conversions are applied to the measurement, yielding a displayed output in ohms. Frequency is measured by counting cycles for a known time period.
Operating the Instrument from the Front P anel Channel Configuration 3 3-7 Table 3-3. Resistance Channel Function Range (Note 1) Terminals PRESS THESE BUTTONS: TO SELECT FROM THESE CHOICES: 0 1 . . 20 OFF V DC V AC Ω Hz ° C or ° F Auto 300.00 Ω 3.
2620A, 2625A Users M anual 3-8 Table 3-5. Thermocouple Temperature Channel Function Range (Note) PRESS THESE BUTTONS: TO SELECT FROM THESE CHOICES: 1 .
Operating the Instrument from the Front P anel Channel Configuration 3 3-9 Table 3-6. RTD Temperature Channel Function Type (Note 1) Terminals (Note 2) R0 (Ice Point) (Note 3) PRESS THESE BUTTONS: TO SELECT FROM THESE CHOICES: 0 1 . . 20 OFF V DC V AC Ω Hz ° C or ° F J K E T N R S b C Pt 2T 4T 100.
2620A, 2625A Users M anual 3-10 Alarm evaluation is not carried out for a channel if: • The limit sense is changed to "OFF ". Alarm checking and the alarm limit values are re-enabled by setting limit sense to "HI" or "LO".
Operating the Instrument from the Front P anel Channel Configuration 3 3-11 Alarm annunciation is disabled when the instrument is in Inactive or Configuration Mode.
2620A, 2625A Users M anual 3-12 At any Configuration Reset (power up C or computer interface *RST), alarm limits on channels 4 through 20 are assigned to Digital I/O lines 4 through 7 in the "ORed" pattern shown in Table 3-8. These assignments can be changed via the Computer Interface.
Operating the Instrument from the Front P anel Channel Configuration 3 3-13 be changed at any point is brightly lit (solid for digits, flashing for other annunciators); all other elements are dimly lit at this time. Table 3-9 presents a full description of the Mx+B configuration sequence.
2620A, 2625A Users M anual 3-14 Table 3-9. Mx+B Selection Channe l Sign, M Value Decimal Point Position Multiplier (Note 1) PRESS THESE BUTTONS: G D B G D H J E G D H J E G D H J E TO SELECT FROM THESE CHOICES: 0 1 . . 20 ± 0000 0000.0 000.00 00.000 0.
Operating the Instrument from the Front P anel Instrument Configuration 3 3-15 This number editing technique occurs during Configuration Mode operations whenever you are setting a numeric value.
2620A, 2625A Users M anual 3-16 Table 3-11. Measurement Rate Selection Press thes e buttons: RATE( KJ )] G D E To select from these choi ces: SLO FAST (Completes s election and returns to Inactiv e Mode) Triggering To set the scan triggering type from the front panel, use the procedure shown in Table 3- 12.
Operating the Instrument from the Front P anel Measurement Connections 3 3-17 Setting Dat e and Ti me of Day The instrument features a built-in, battery-maintained clock and calendar.
2620A, 2625A Users M anual 3-18 DC Volts, AC Vol t s, Frequency, and Thermocoupl es Any analog input channel (0 through 20) can be used to measure dc volts, ac volts, or frequency. For channel 0, use the two terminals on the front panel. For channels 1 through 20, use the H (high) and L (low) inputs on the rear panel Input Module.
Operating the Instrument from the Front P anel Measurement Connections 3 3-19 L H L H L H H L H L H L H L H L H L H L H L L H L H HL H L H L H L H L H L H L HL HL HLHLHLHLHL HLHLHL HL HLHLHLHLHLHLHLHLHL STRAIN RELIEF 1 11 2 12 3 13 4 14 5 15 6 16 7 17 8 18 9 19 10 20 oo08f.
2620A, 2625A Users M anual 3-20 Resistance and RTD For all channels (0 through 20), 2-terminal resistance or RTD measurements are allowed. Four-terminal measurements can be made on channels 1 through 10 only.
Operating the Instrument from the Front P anel Measurement Connections 3 3-21 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L 2-WIRE (2T) CONNECTION RESISTANCE OR RTD SOURCE USE H AND L TERMINALS FOR ANY CHANNEL.
2620A, 2625A Users M anual 3-22 Totalizing General Event counting (totalizing) is commonly used on production lines for counting items. The instrument counts events by detecting low-to-high voltage transitions; each low-to- high transition increments the totalizer value by one.
Operating the Instrument from the Front P anel List Button Functions 3 3-23 Table 3-15. Rev iew Array Activate (Note 1) Review Points Deactivate (Note 3) NH J N 20 LAST M IN MAX or G • C • • • D 0 LAST MIN M AX Note 1.
2620A, 2625A Users M anual 3-24 07:41:37 02/09/91 CH LAST VALUE MAX VALUE MIN VALUE 1: 097.32 mVDC 098.51 mVDC 096.10 mVDC 2: 0.0973 VDC 0.0985 VDC 0.0961 VDC 3: 00.097 VDC 00.099 VDC 00.096 VDC 4: 000.10 VDC 000.10 VDC 000.10 VDC 5: OL mVAC OL mVAC OL mVAC 6: OL VAC OL VAC OL VAC 7: 05.
Operating the Instrument from the Front P anel Autoprint 3 3-25 Autoprint The front panel setup procedure is summarized in Table 3-17. Begin this procedure by selecting MODE ( K U ). Select the scan data destination ("dESt" in right display) as "Print" (left display).
2620A, 2625A Users M anual 3-26 Table 3-17. Autoprint/Memory Storage Selection Destination (“dESt”) (Note 1) Mode (“MO dE”) (Note 2) Press thes e buttons:P MODE KU ) G D E G D E To select from these choic es: Print StorE both ALL ALAr trAnS Note 1.
Operating the Instrument from the Front P anel REM Annunciator 3 3-27 G and D can now be used to change the monitored channel. All other front panel buttons are locked out; a long beep results from their use.
2620A, 2625A Users M anual 3-28.
4-1 Chapter 4 Using the Computer Interface Title Page Introduction ....................................................................................................... 4-3 Front Panel and Computer I nterface Operations..............................
2620A, 2625A Users M anual 4-2 Status Byte Register.................................................................................. 4-19 Reading the Status Byte Reg i ster ............................................................. 4-20 Service Request Enable Register .
Using the Computer Interface Introduction 4 4-3 Introduct ion The instrument can be operated from a host via commands sent through the rear panel computer interface.
2620A, 2625A Users M anual 4-4 Setting Communi cat i on Parameters (RS-232) Baud rate ("bAUd"), parity ("PAR"), and echo ("Echo") parameters can be set directly by the user; number of data bits and number of stop bits cannot be set.
Using the Computer Interface Using the RS-232 Computer Interface 4 4-5 5. Press G or D to scroll to odd, even, or no parity, respectively. Press EE to select the displayed parity. 6. "Echo" now appears in the right display, with "On" or "OFF" appearing on the left display.
2620A, 2625A Users M anual 4-6 10:33:45 5/11/90 Lines following the time and date contain measurement data for channels that have been set up for this session. The last line of the printout contains the Totalizer count and the status of the digital I/O lines.
Using the Computer Interface Using the RS-232 Computer Interface 4 4-7 Data for the oldest set of scan readings in Hydra Series II Data Logger memory can be retrieved with the LOG? query.
2620A, 2625A Users M anual 4-8 To connect the instrument to a specific brand of RS-232 printer, use the cable that would be used to connect that printer to an RS-232 port on an IBM PC/AT (DB-9 connector). The RS42 cable is compatible w ith most serial printers; contact Fluke for printer compatibility information.
Using the Computer Interface Using the IEEE-488 Interface 4 4-9 RS-232 Prompt s The instrument parses and executes, in turn, each command received from the host over the RS-232 interface.
2620A, 2625A Users M anual 4-10 10 ’ EXAMPLE.BAS Hydra program to scan VDC, VAC, OHMS, FREQ, or TEMP 20 ’ - initialize RS232 communication and set up Hydra 30 ’ - display and record measurement data in "TESTDATA.
Using the Computer Interface Using the IEEE-488 Interface 4 4-11 500 PRINT #1, "FUNC " + STR$(I) + "," + CMD$ 510 GOSUB 800 520 NEXT I 530 ’ 540 LOCATE 23,1 550 PRINT "Measu.
2620A, 2625A Users M anual 4-12 Table 4-2. IEEE-488.1 Capabilities Capability Description SH1 and AH1 R ead and write bus hands haking, including hold off. T5 Basic talk er with serial poll and without talk only mode. Serial poll is used to return the instrument s tatus byte to the controller.
Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-13 2. Press D to scroll to "IEEE"; then press E to enable the IEEE-488 interface and disable the RS-232 interface. "IEEE" will not appear in the left display if the IEEE- 488 interface is not installed.
2620A, 2625A Users M anual 4-14 Input Str ings The instrument processes and executes valid input strings sent by the host. A valid input string is one or more syntactically correct commands, separated by semicolons (;), followed by an input term inator.
Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-15 Select ohms function for channel 1 Select 30-kilohm range Select 2-wire (2T) connections 2 3, FUNC 1, OHMS, Select temper.
2620A, 2625A Users M anual 4-16 Sending Numeric Values to t he I nst r ument (RS- 232 and I EEE- 488) Numeric values can be sent to the instrument as integers, real numbers, or real numbers with exponents, as shown in the following examples: EXAMPLE EXPLANATION +12345 Sends the signed inte ger “+12345” 123.
Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-17 loaded, the Message Available (MAV ) bit in the Status Byte Register is set true.
2620A, 2625A Users M anual 4-18 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 & & & & & & & & Logical OR Standard Event Status Register Read Using * ESR? Standard Event Status Enable.
Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-19 Table 4-4. Status Byte Register Bit Name Description 0 IEB Instrum ent Event Bit.
2620A, 2625A Users M anual 4-20 Table 4-5. Event Status Register Bit Name Description 0 OPC Operation Com plete. Set true (1) upon execution of the *O PC comm and, indicating that the instrum ent has com pleted all selected pending operations . 1 not used Always set to 0.
Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-21 Service Request Enable Register The Service Request Enable Register (SRE) is an 8-bit register that enables or disables (i.e., masks) corresponding summary messages in the Status Byte Register (STB).
2620A, 2625A Users M anual 4-22 Table 4-6. Instrument Event Register (IER) Note Whenever the Instrum ent Event Register is read, the condition bits are c leared. This register is used in conjunction w ith the Instrument Event Enable R egister to determine the conditions under which the Instrum ent Event Bit of the Status By te is set.
Using the Computer Interface Computer Interface Command Set 4 4-23 Table 4-7. Command and Query Summary Alarms ALARMS? Activ e Alarms Q uery ALARM_ASSOC Associate Alarm Output ALARM_ASSOC? Alarm As so.
2620A, 2625A Users M anual 4-24 Table 4-7. Command and Query Summary (cont) Lock LOCK Lock/unloc k front panel control key s LOCK? Returns ins trument front panel lock s tatus Measurem ent Rate RATE S.
Using the Computer Interface Computer Interface Command Set 4 4-25 Table 4-7. Command and Query Summary (cont) Response Form at FORMAT Response Form at FORMAT? Query R esponse Format Review Array REVI.
2620A, 2625A Users M anual 4-26 Table 4-8. Command and Query Reference *CLS Clear Status Clears all event regis ters sum marized in the status byte, exc ept for Mess age Available, which is cleared only if *CLS is the first mess age in the queue. *ESE Event Status Enable Sets the Event Status Enable Register to the given v alue.
Using the Computer Interface Computer Interface Command Set 4 4-27 Table 4-8. Command and Query Reference (cont) *SRE Service Reques t Enable Sets the Servic e Request Enable Register to the giv en value. *SRE <v alue> <value> = (0 .. 255) If the value is greater than 255, a Com mand Error is generated.
2620A, 2625A Users M anual 4-28 Table 4-8. Command and Query Reference (cont) ALARMS? Activ e Alarms Q uery Returns alarm s tatus for the indicated c hannel(s). The value returned represents data from the most recent s can. The mos t recent scan is the scan in progres s or, if scanning is not in progress, the las t completed scan.
Using the Computer Interface Computer Interface Command Set 4 4-29 Table 4-8. Command and Query Reference (cont) ALARM_ASSOC? Alarm As sociation Query Returns alarm output as sociations for the indic ated channel and alarm limit. ALARM_ASSOC? <channel>,<lim it_num> <channel> = (4 .
2620A, 2625A Users M anual 4-30 Table 4-8. Command and Query Reference (cont) ALARM_LIMIT Set Alarm Lim it Store alarm limit information for the indic ated channel and limit. The fields to be given (in order) are: ALARM_LIMIT <c hannel>,<limit_num>,<sens e>,<value> <channel> = (0 .
Using the Computer Interface Computer Interface Command Set 4 4-31 Table 4-8. Command and Query Reference (cont) DIO_LEVELS? Digital I/O State Query Returns digital input and output lev els for the eight configurable digital I/O lines. Returns an integer value repres enting the actual states of the digital I/O lines.
2620A, 2625A Users M anual 4-32 Table 4-8. Command and Query Reference (cont) MEASUREMENT UNITS STRING Scaled “MX+B” Volts DC “VDC” Volts AC “VAC” Resista nce “OHMS” Frequency “Hz ” Temperature “C” Temperature “F” FORMAT? Query R esponse Format Returns the format pres ently in use: The default.
Using the Computer Interface Computer Interface Command Set 4 4-33 Table 4-8. Command and Query Reference (cont) For temperature functions , the "range" is a thermocouple ty pe (J, K, E, T, N, R, S, B, C) or DIN/IEC 751 R TD (PT). Use of any other v alue causes an Ex ecution Error.
2620A, 2625A Users M anual 4-34 Table 4-8. Command and Query Reference (cont) IEE? Instrum ent Event Enable Query Returns the present v alue of the Instrument Ev ent Enable Register as an integer. IER? Instrument Ev ent Register Query Returns the value of the Ins trument Event Regis ter as an integer, then clears all bits .
Using the Computer Interface Computer Interface Command Set 4 4-35 Table 4-8. Command and Query Reference (cont) LOCK Lock the ins trument front panel so that only us e of the arrow keys and the simultaneous use of F and B are recogniz ed. The following LOCK com mands are rec ognized: Unlo ck Lock and begin rev iew.
2620A, 2625A Users M anual 4-36 Table 4-8. Command and Query Reference (cont) The Totalizer count is returned as a scientific notation value in the range 0 through 65535 (00.000E+3 through 65.535E+3). If the Totalizer has overflowed, a value of 1E+9 is returned.
Using the Computer Interface Computer Interface Command Set 4 4-37 Table 4-8. Command and Query Reference (cont) LOG_MO DE Determines treatment of new s can data when memory is full (RS-232 only) LOG_M ODE <mode> 0 Wrap around. When mem ory is full, oldest s cans are dis carded to make room for new scans.
2620A, 2625A Users M anual 4-38 Table 4-8. Command and Query Reference (cont) MIN? Channel’ s Minim um Value Returns minim um value(s) for c hannels meas ured in the most recent scan.
Using the Computer Interface Computer Interface Command Set 4 4-39 Table 4-8. Command and Query Reference (cont) NEXT? Next Sc an’ s Values The NEXT? query returns data v alues for the next s can to complete. If a scan is in progress when the NEXT? query is proces sed, the data values returned are from the sc an in progress.
2620A, 2625A Users M anual 4-40 Table 4-8. Command and Query Reference (cont) PRINT_TYPE? Data Logging Type Query (RS-232 only ) Return the Autoprint or internal Memory Storage type and the type of scan data logged. Returns 0 (AUTOPRINT), 1 (STORE), O R 2 (BOTH), and 0 (ALL), 1 (ALARM), or 2 (TRAN S).
Using the Computer Interface Computer Interface Command Set 4 4-41 Table 4-8. Command and Query Reference (cont) REMS Remote without Lock out (RS-232 only) Enter the IEEE-488.
2620A, 2625A Users M anual 4-42 Table 4-8. Command and Query Reference (cont) RWLS Remote with Lock out (RS-232 only) Enter the IEEE-488.1 remote with front panel lockout (RWLS) s tate. All front panel buttons are disabled, and the RE M annunciator is lit.
Using the Computer Interface Computer Interface Command Set 4 4-43 Table 4-8. Command and Query Reference (cont) SCALE_MB? Mx+B Scaling Values Query Return the M and B sc aling values for the indicated c hannel. SCALE_MB? <channel> <channel> = (0 .
2620A, 2625A Users M anual 4-44 Table 4-8. Command and Query Reference (cont) Use the lowes t two bits of the v alue given as indiv idual flags to specify the temperature configuration. Therefore, the v alue given must be in the range from 0 through 3 or an Exec ution Error is generated.
Using the Computer Interface Computer Interface Command Set 4 4-45 Table 4-8. Command and Query Reference (cont) TOTAL Set Totalizer Count Give the Totaliz er count a new initial value. TOTAL <t_value> <t_value> = (0 .. 65535) If the value is not in the range 0 through 65,535, an Ex ecution Error is generated.
2620A, 2625A Users M anual 4-46 Table 4-8. Command and Query Reference (cont) TRIGGER ? Trigger Type Query Returns an integer representing the pres ent trigger type: 0 (off) 1 (on) 2 (alarm).
5-1 Chapter 5 Additional Considerations Title Page Introduction ....................................................................................................... 5- 3 Measurement Rate .............................................................
2620A, 2625A Users M anual 5-2.
Additional Considerations Introduction 5 5-3 Introduct ion Chapter 5 discusses some topics that will help you use the instrument more effectively. These considerations assume that you are familiar with the basic operation of the instrument and have some basic understanding of electronics.
2620A, 2625A Users M anual 5-4 Verify the trigger type over the computer interface by sending the query: TRIGGER? Single scans can be triggered via the RS-232 interface or the IEEE-488 interface by sending the *TRG command. Note that the IEEE-488 interface GET command can be used only when the IEEE-488 interface is enabled.
Additional Considerations Advanced Trigger Mechanisms 5 5-5 LOW HIGH 7.0V 2.0V 0.8V –0.6V 0 VALID EXTERNAL TRIGGERS SCAN TIME SCAN HIGH ≥ 100 mS FALLING EDGE HELD 5 µ S IGNORED (SCAN IN PROGRESS) +–01 2 3 T R 0 1 2 3 4 5 6 7 Σ 9-16 V DC PWR ! +30V ALARM OUTPUTS DIGITAL I/O +– 01 2 3 T R oo15f.
2620A, 2625A Users M anual 5-6 Monitor Al arm Enabl ed (Type 2) This corresponds to the Front Panel ALAr or Co mputer Interface TRIGGER =2 setting. When the Monitor Alarm trigger is enabled and the Monitor function is on, a scan is triggered if the monitor measurement is found to be in alarm.
Additional Considerations When Measuring Resistance or Temperature ( Rtd) 5 5-7 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L 2-WIRE (2T) CONNECTION RESISTANCE OR RTD SOURCE USE H AND L TERMINALS FOR ANY CHANNEL.
2620A, 2625A Users M anual 5-8 Table 5-1. Ohms Test Voltage Range Typical Full Scale Voltage 300.00 Ω 0.22 3.0000 k Ω 0.25 30.000 k Ω 0.29 300.00 k Ω 0.
Additional Considerations Making Mixed Measurements 5 5-9 average-responding measurement devices display the correct rms reading of 1.0000V (the dc component equals 0).
2620A, 2625A Users M anual 5-10 DC AND AC TOTAL RMS TRUE RMS = 0.000 1.000 1.000 0.900 0.636 0.000 0.707 1.000 1.000 1.000 2D 0.000 1.000 AC-COUPLED INPUT WAVEFORM PK-PK PEAK VOLTAGES 0-PK MEASURED VOLTAGES AC COMPONENT ONLY RMS CAL * HYDRA DC COMPONENT ONLY SINE PK 0 PK-PK 2.
Additional Considerations Using Shielded Wiring 5 5-11 • Avoid connecting inputs with ac volts signals to any channel 10 numbers away from a sensitive channel (i.e. 4-terminal input channels.) • Avoid tying L (low) or (especially) H (high) inputs of a sensitive channel to earth (chassis) ground.
2620A, 2625A Users M anual 1. Connect the shield to L (low) at the 2620A-100 Input Module, and try connecting the sensor shield to a quiet earth ground at or very near the measurement sensor end (and at only one place), or 2.
6-1 Chapter 6 Maintenance Title Page Introduction ....................................................................................................... 6- 3 Cleaning....................................................................................
2620A, 2625A Users M anual 6-2.
Maintenance Introduction 6 6-3 Introduct ion This chapter describes basic maintenance that the instrument user can perform. Do not attempt any maintenance not described in this chapter. For additional maintenance, service, and calibration procedures, qualified service personnel can refer to the Hydra Series II Service Manual (P/N 688868).
2620A, 2625A Users M anual 6-4 Power-Line Cord Connector Line Fuse (T 125 mA, 250V, Slow Blow) Fuse Holder (Spare Fuse Provided) Complies with the limit for a class B computing device pursuant to Subpart J of Part 15 of FCC Rules +–0123 T R 0123 4567 Σ 9-16 V DC PWR ! +30V DIGITAL I/O MEETS 0871 B To Remove, Squeeze and Slide Out oo18f.
Maintenance Performance Tests 6 6-5 Table 6-1. Power-Up Error Codes Error Description 1 ROM checksu m erro r 2 External RAM test failed 3 Internal RAM tes t failed 4 Display power-up test failure 5 Di.
2620A, 2625A Users M anual 6-6 Table 6-2. Recommended Test Equipment Instrument Type Minimum Specification Recommended Model Multifunction Calibrator D C Voltage: Fluke 5700A Range: 90 mV to 300V dc Accurac y: .005% AC Voltage: Frequency Voltage Accuracy 1 kHz 29 mV to 300V 0.
Maintenance Performance Tests 6 6-7 Accuracy Verificat i on Test 1. Power up the instrument and allow it to temperature stabilize for 1/2 hour. 2. Connect a cable from the Output VA HI and LO connectors of the 5700A to the V Ω and COM connectors on the front panel of the Hydra Series II Instrument.
2620A, 2625A Users M anual 6-8 Table 6-3. Performance Tests (Voltage, Resistance, and Frequency) Function Range Input Level Frequency Display Accuracy (1 year, 18-28 ° C) MIN MAX DC Volts 300 mV 0V -- -0.02 0.02 300 mV 150 mV --- 149.94 150.06 300 mV 290 mV --- 289.
Maintenance Performance Tests 6 6-9 Table 6-3. Performance Tests (Voltage, Resistance, and Frequency) (cont) Using inputs in decades of 1.9: 300 Ω short 0.00 0.09 190 Ω 189.93 190.12 3 k Ω short 0.0000 0.0003 1.9 k Ω 1.8992 1.9008 30 k Ω 19 k Ω 18.
2620A, 2625A Users M anual 6-10 3. Connect a cable from the Output VA HI and LO connectors of the 5700A to the V Ω and COM connectors on the front panel of the Hydra Series II Instrument.
Maintenance Performance Tests 6 6-11 Note 4-terminal connections are made using pairs of channels. 4-terminal measurements can only be made on channels 1 through 10.
2620A, 2625A Users M anual 6-12 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L HYDRA INPUT MODULE HI HI LO.
Maintenance Performance Tests 6 6-13 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L 4-WIRE (4T) CONNECTION DECADE RESISTANCE BOX HYDRA INPUT MODULE oo20f.eps Figure 6-3.
2620A, 2625A Users M anual 6-14 RTD Temperature Accuracy Test The following two RTD Temperature Accuracy Tests are different in that one uses a Decade Resistance Source and the other uses an RT D. Only one of the tests need to be performed to assure operation.
Maintenance Performance Tests 6 6-15 RTD Temperatur e Accur acy Test (Using DIN/I EC 751) 1. Switch OFF power to the instrument and disconnect all other high voltage inputs. 2. Remove the Input Module from the rear of the instrument. Open the Input Module and connect a Platinum RTD, conforming to the European Standards IEC 751 (DIN 43760).
2620A, 2625A Users M anual 6-16 Digital Out put Test 1. Ensure that communication parameters (i.e., transmission mode, baud rate, parity, and echo mode) on the Hydra Series II and the host are properly configured to send and receive serial data. Refer to Chapter 4.
Maintenance Performance Tests 6 6-17 Verify that the returned value as shown on the Host screen = 255. Note The number returned is the decimal equivalent of the Digital Input binary word (inputs 0 through 7’ s status). See Table 6-7 to determine if the number returned corresponds to the bits jumpered to ground in this test.
2620A, 2625A Users M anual 6-18 5. Press the TOTAL button on the front panel of Hydra Series II. Assure Hydra Series II displays a 0 value. 6. Jumper output 0 to the Total ( ∑ ) input by connecting the ( ∑ ) terminal test lead to output 0’ s test lead.
Maintenance Performance Tests 6 6-19 Hydra Series II’ s display should now show the totalizing value incrementing at a 10 count per second rate. Dedicated Alarm O ut put Test The Dedicated Alarm Output Test verifies that Alarm Outputs 0 through 3 are functioning properly.
2620A, 2625A Users M anual 6-20 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H LH LH LH LH LH LH LH LH L INPUT MODULE (USE STACKED BANAN.
Maintenance Calibration 6 6-21 External Trigger I nput Test The External Trigger Input Test verifies that the rear panel trigger input of Hydra Series II is functioning properly. 1. Switch OFF power to the instrument and disconnect all high voltage inputs.
2620A, 2625A Users M anual 6-22 no parts to disassemble, no mechanical adjustments to make, and the instrument can be calibrated by an automated instrumentation system. The instrument should normally be calibrated on a regular cycle, typically every 90 days or 1 year.
Appendices Appendix Titl e Page A Specification s ...................................................................................................... . A - 1 B ASC II & I EEE - 488 Bus Code s ....................................................
.
A-1 Appendix A Specifications Introduct ion The instrument specifications presented here are applicable within the conditions listed in the Environmental chapter.
2620A/2625A Users M anual A-2 DC Voltage Input s Range Resolution Slow Fast 300 mV 10 µ V 0.1 mV 3 V 0.1 mV 1 mV 30 V 1 mV 10 mV 300 V 10 mV 0.1 V Accuracy ± (% ± V) Range 18°C to 28°C 0°C to 60°C 90 Days, Slow 1 Year, Slow 1 Year, Fast 1 Year, Slow 1 Year, Fast 300 mV 0.
Appendices Specifications A A-3 Thermoc ouple Inputs Temperature Measurements - Accuracy (Thermocouples) (IPTS-68) Thermocouple Accuracy (±°C)* 18°C to 28°C 0°C TO 60°C Type Temperatur e (C°) 90 Days Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -100 to -30 0.
2620A/2625A Users M anual A-4 Temperature Measurements - Accuracy (Thermocouples) (ITS-90) Thermocouple Accuracy (±°C)* 18°C to 28°C 0°C to 60°C Type (°C) Temperatur e (°C) 90 Days Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -100 to -30 0.
Appendices Specifications A A-5 Input Im pedance 100 M Ω minimum in parallel with 150 pF maximum Common Mode and Normal Mode Rej ect i on See Specifications, DC Voltage Inputs Cross-Talk Reject i on.
2620A/2625A Users M anual A-6 IEC 751, Amendment 2, 100 e Platinum (ITS-90) RTD 4 Wire Accuracy* (±°C) Temperature Resolution 18°C to 28°C 0°C to 60°C (°C) Slow Fast 90 Day Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -200.00 0.02 0.1 0.
Appendices Specifications A A-7 1 Year Accuracy ± (% ± V) Range Frequency 18 ° C to 28 ° C 0 ° C to 60 ° C Slow Fast Slow Fast 20 Hz - 50 Hz 1.43% + 0. 25 m V 1. 43% + 0.4 m V 1. 54% + 0.25 mV 1.54% + 0.4 mV 50 Hz - 100 Hz 0.30% + 0. 25 m V 0. 30% + 0.
2620A/2625A Users M anual A-8 Frequency Maximum Input at Upper Frequency 20 Hz - 50 Hz 300 V rms 50 Hz - 100 Hz 300 V rms 100 Hz - 10 kH z 200 V rms 10 kHz - 20 k Hz 100 V rms 20 kHz - 50 k Hz 40 V rms 50 kHz - 100 k Hz 20 V rms Input Im pedance 1 M Ω in parallel with 100 pF maximum Maximum Maximum Crest Factor 3.
Appendices Specifications A A-9 Ohms Inputs Range Resolution Typical Full Maximum Current Through Maximum Open Slow Fast Scale Voltage Unknown Circuit Voltage 300 Ω 10 m Ω 0.1 Ω 0.22 V 1 mA 3.2V 3 k Ω 0.1 Ω 1 Ω 0.25V 110 µ A 1.5 V 30 k Ω 1 Ω 10 Ω 0.
2620A/2625A Users M anual A-10 Freque ncy Input s Frequency Range 15 Hz to greater than 1 Mhz Range Resolution Accuracy + (% ± Hz) Slow Fast Slow Fast 15 Hz - 900 Hz 0.01 Hz 0.1 H z 0.05% + 0.02 Hz 0.05% + 0.2 Hz 9 kHz 0.1 Hz 1 Hz 0.05% + 0.1 Hz 0.05% + 1 Hz 90 kHz 1 Hz 10 Hz 0.
Appendices Specifications A A-11 Typica l Scanning Ra te See table below. The measurement conditions are: averaged rate over 20 scans; continuous scanning; alarm limits and Mx+B scanning set on all channels; logging data to internal memory; and RS-232 communications set at 9600 baud.
2620A/2625A Users M anual A-12 Maximum Aut oranging Time (Seconds per Channel) Function Range Change Slow Fast VDC 300 mV ---------------------------- > 150 V 0.25 0.19 150 V 300 mV ---------------------------- > 0.26 0.19 VAC 300 mV ---------------------------- > 150V 4.
Appendices Specifications A A-13 Isolati on none dc-coupled Threshold 1.4V Hysteresis 500 mV Trigger Input Input Volt ages contact closure and TTL compati ble “high” =2.
2620A/2625A Users M anual A-14 Digital and Ala rm Outputs Output Logi c Level s Logical “zero”: 0.8V max for an Iout of -1.0 mA (1LSTTL load) Logical “one”: 3.8V min for an Iout of 0.05 m A (1LSTTL load) For non-TTL loads: 1.8V max for an Iout or -20 mA Logical “zero”: 3.
Appendices Specifications A A-15 Altitude Operating: 2,000 m maximum Non-operating: 12,200 m maximum Vibration 0.7 g at 15 Hz 1.3 g at 25 Hz 3 g at 55 Hz Shock 30 g half sine per Mil-T-28800 Bench han.
2620A/2625A Users M anual A-16 Power 90V to 264V ac (no switching required), 50 and 60 Hz, 10 VA maximum 9V dc to 16V dc, 10W maximum If both sources are applied simultaneously, ac is used if it exceeds approximately 8.3 times dc. Automatic switchover occurs between ac and dc without interruption.
B-1 Appendix B ASCII & IEEE-488 Bus Codes.
2620A/2625A Users M anual B-2 B 7 B 6 B 5 B 4 2 7 2 6 2 5 2 4 B 3 2 3 2 2 2 1 2 0 B 2 B 1 B 0 BITS NUL SP ! " 1 2 # $ 0@ P p NUL SOH GTL DLE MLA0 MLA16 @ MTA0 P MTA16 MSA0 MSA16 P SPACE CONTROL U.
C-1 Appendix C IEEE-488.2 Devise Documentation Requirements Introduct ion Section 4.9 of the IEEE Standard 488.2-1987 states: "All devices shall supply information to the user about how the device has implemented this standard." (In this context, "device" means the Fluke 2620A Hydra Series II Data A cquisition Unit.
2620A/2625A Users M anual C-2 Measurement rate: Slow. Scaling (M):1 (all channels) Offset (B): 0 (all channels) Alarm parameters: Limit-1 and Lim it-2 OFF. All limit values 0. Alarm assignments: Channels 0-3 assigned to outputs 0-3,respectively. Channels 4-20 assigned to digital I/O lines 4-7, as shown in Table 3-8.
Appendices IEEE-488.2 Devise Docum entation Requirements C C-3 <PROGRAM MESSAGE UNIT> <PROGRAM MESSAGE UNIT SEPARATOR> <COMMAN D MESSAGE U NIT> <QUERY MESSAGE UNIT> <COMMAND PROGRAM HEADER> <QUERY PROGRAM HEADER> <PROGRAM DATA> <CHARACTER PROGRAM DATA> <DECIMAL NUMERI C PROGRAM DATA> 7.
2620A/2625A Users M anual C-4 There are no device-to-device messages. 11. The size of any block data responses, Section 8.7.9.4. There are no block data responses. 12. A list of common commands and queries which are implemented, Section 10. *CLS, *ESE, *ESE?, *ESR?, *IDN?, *OPC, *OPC?, *RST, *SRE, *SRE?, *STB?, *TRG, *TST?, *WAI 13.
Appendices IEEE-488.2 Devise Docum entation Requirements C C-5 22. For each command, a statement describing whether is overlapped or sequential. All commands are sequential; none are overlappe d .
2620A/2625A Users M anual C-6.
D-1 Appendix D Making Mixed Measurements Introduct ion This appendix augments the discussion of ac signal effects on other channels (cross talk) found in Chapter 5 ("Making Mixed Measurements"). Effects on each measurement function are discussed below.
2620A/2625A Users M anual D-2 AC Signal Cross Talk Into a n AC Volt a ge Channel ACV Error Ratio = VACrm s error VACr ms crosstalk Frequency crosstalk () () () × Range Ratio (worst case) Ratio (typical) × vH z × × vH z × × vH z × × vH z × 30.
Appendices Making M ixed Meas urements D D-3 AC Si gnal Cro sstalk Into a T emperature Ch annel Frequency = 50, 60 Hz TEMPERATURE Error Rat io = ° C e r r o r VACrm s crosstalk () () Types J, K, E, T, N: Worst case Typical 2. 7 × 10 -3 ° C Vrms 5.
2620A/2625A Users M anual D-4.
E-1 Appendix E Binary Upload of Logged Data (LOG_BIN?) (2625A only) Introduct ion The LOG_BIN? <index> query can be used to quickly upload logged data from a 2625A. The response is a single ASCII string, which encodes the raw binary data stored at the specified <index> position.
2620A/2625A Users M anual E-2 /* -* decode(): Decode LOG_BIN? response string into raw byte stream ** ** Decoding is done on multiples of four input bytes: ** ** 543210 543210 543210 543210 (bit numbe.
Appendices Binary Upload of Logged Data (LOG _BIN?) (2625A only) E E-3 The raw data output array contains the information listed below. Note that the number of floating point values is equal to the number of channels in use, plus one. (The totalizer count is always present in the data, and is stored as a floating point number.
2620A/2625A Users M anual E-4 The floating point format used is 32-bit with a 1-bit sign, 8-bit exponent, and 24-bit mantissa with the most significant bit hidden under the LSB of the exponent. The number is formatted as shown in Table F-1. Table E-1.
Appendices Binary Upload of Logged Data (LOG _BIN?) (2625A only) E E-5 /* Import globals from main program */ extern int timestamp[]; extern int misc[]; extern float values[]; /* -* convert(): Convert.
2620A/2625A Users M anual E-6 /* Globals convert() uses for destination */ int timestamp[6]; /* Scan timestamp */ int misc[3]; /* Temperature units, measurement rate, digital I/O */ float values[22]; .
F-1 Appendix F RS-232 Cabling Introduct ion This appendix details the RS-232 cabling between the instrument and a PC, instrument controller (Fluke 17XXA series), pri nter, or modem . All connections can be m ade using the Fluke RS-series of cables (see Options and Accessories in Chapter 1).
2620A/2625A Users M anual F-2 For example, connection to a serial-to-parallel converter (when using a printer with a parallel input) may be as a DTE (cable RS42) or DCE (cable RS40).
Appendices RS-232 Cabling F F-3 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 DCD Rx Tx DTR GND DSR RTS CTS RI 1 2 3 4 5 6 7 8 9 COM PC DB-9 RS43 CABLE (NULL MODEM) FEMALE MALE PINS K.
2620A/2625A Users M anual F-4 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 Tx Rx RTS CTS DSR GND DCD DTR RI COM PC DB-25 RS40 CABLE (OR EQUAL) FEMALE MALE PINS KEY Tx – TRANSMIT Rx.
Appendices RS-232 Cabling F F-5 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 Tx Rx RTS CTS DSR GND DCD DTR RI MODEM DB-25 RS41 CABLE (OR EQUAL) FEMALE MALE PINS KEY Tx – TRANSMIT R.
2620A/2625A Users M anual F-6 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 Tx Rx RTS CTS DSR GND DCD DTR RI PRINTER DB-25 RS42 CABLE (OR EQUAL) FEMALE MALE PINS KEY Tx – TRANSMIT R.
Appendices RS-232 Cabling F F-7 DB-9 CONNECTOR CONNECTOR SIDE DB-25 CONNECTOR SOLDER SIDE FEMALE CONNECTOR SIDE SOLDER SIDE MALE CONNECTOR SIDE SOLDER SIDE FEMALE CONNECTOR SIDE SOLDER SIDE MALE 6 1 9.
2620A/2625A Users M anual F-8.
Hy dra Confi guration Recor d SET-UP NAME _________________________________________ DATE_________________________ SCAN RATE: q Slow TEMPERATURE UNITS q °C q °F q Fast COMMUNICATION I/F q RS-232-C SC.
1 Index —2— 2 - w ire accurac y , A - 6, A - 9 —4— 4-ter m inal resistan ce test, 6-10 —A— AC signal cross talk in a dc voltage channel, D-1 AC signal cross talk into a frequenc y channel,.
2620A/2625A Users M anual 2 Front panel trigger control, 5 -3 —G— General, 3 - 22 General in f or m ation (R S - 232 and IEEE-488), 4- 13 —H— Ho w the in stru m en t processes input , 4 - 13 H.
An important point after buying a device Fluke 2625A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Fluke 2625A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Fluke 2625A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Fluke 2625A you will learn all the available features of the product, as well as information on its operation. The information that you get Fluke 2625A will certainly help you make a decision on the purchase.
If you already are a holder of Fluke 2625A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Fluke 2625A.
However, one of the most important roles played by the user manual is to help in solving problems with Fluke 2625A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Fluke 2625A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
