Instruction/ maintenance manual of the product PS283 Tektronix
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User Manual PS280 & PS283 DC Power Supplies 070-8355-03.
Copyright T ektronix, Inc. 1991. All rights reserved. T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved.
W ARRANTY T ektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment.
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PS280 & PS283 User Manual i T able of Contents General Safety Summary iii . . . . . . . . . . . . . . . . . . . . . . . . . . . . Getting Started 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing the Power Supply for Use 2 .
T able of Contents ii PS280 & PS283 User Manual List of Figures Figure 1: Line V oltage Selectors, Power Input, and Fuse Locations 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2: PS280 or PS283 Front Panel 4 . . . . . . .
PS280 & PS283 User Manual iii General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Injury Precautions Use Proper Power Cord T o avoid fire hazard, use only the power cord specified for this product.
General Safety Summary iv PS280 & PS283 User Manual Do Not Operate in Wet/Damp Conditions T o avoid electric shock, do not operate this product in wet or damp conditions. Do Not Operate in Explosive Atmosphere T o avoid injury or fire hazard, do not operate this product in an explosive atmosphere.
General Safety Summary PS280 & PS283 User Manual v CAUTION. Caution statements identify conditions or practices that could r esult in damage to this pr oduct or other pr operty . T erms on the Product These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as you read the marking.
General Safety Summary vi PS280 & PS283 User Manual.
PS280 & PS283 User Manual 1 Getting Started The T ektronix PS280 or PS283 Laboratory DC Power Supply is a multifunction bench or portable instrument. This regulated power supply provides a fixed 5 V output for powering logic circuits and two variable outputs for a wide variety of test and experimental uses.
Getting Started 2 PS280 & PS283 User Manual Preparing the Power Supply for Use Check the following items prior to operating the Laboratory DC Power Supply for the first time (see Figure 1 for locations of items 1 through 3): 1 3 2 Figure 1: Line V oltage Selectors, Power Input, and Fuse Locations CAUTION.
Getting Started PS280 & PS283 User Manual 3 occurs. Refer to Appendix C: Replaceable Parts on page 33 for fuse part numbers. W ARNING. T o pr event electrical shock, connect the power cor d to a pr operly gr ounded power sour ce. The outside (ground) of this connector is connected thr ough the equipment to the power sour ce gr ound.
Getting Started 4 PS280 & PS283 User Manual Front Panel Figure 2 shows the front-panel controls, connectors, and indicators with brief descriptions following the figure. 13 4 5 6 8 22 19 18 15 12 1 1 13 17 21 9 27 20 16 14 10 Figure 2: PS280 or PS283 Front Panel 1.
Getting Started PS280 & PS283 User Manual 5 3. AMPS Indicator . Lights when AMPS is selected with the AMPS/VOL TS switch for the left variable power supply . 4. VOL TS Indicator . Lights when VOL TS is selected with AMPS/VOL TS switch for the left variable power supply .
Getting Started 6 PS280 & PS283 User Manual 13. Output T erminals. These terminals for the left, variable power supply allow you to plug in the test leads as follows: H The red terminal on the right is the positive polarity output terminal. It is indicated by a + sign above it.
Getting Started PS280 & PS283 User Manual 7 17. Output T erminals. These terminals for the right, variable power supply allow you to plug in the test leads as follows: H The red terminal on the right is the positive polarity output terminal. It is indicated by a plus (+) sign above it.
Getting Started 8 PS280 & PS283 User Manual T urning On the Instrument After you have ensured that the PS280 or PS283 is set up for the proper line voltage and has the proper fuse (refer to Pr eparing the Power Supply for Use on page 2), you are ready to turn it on.
PS280 & PS283 User Manual 9 Reference This section tells how to set the PS280 or PS283 current limit. It also explains the constant voltage/constant current crossover characteris- tic of the instrument.
Reference 10 PS280 & PS283 User Manual V O Maximum Output V oltage Constant Current Range Constant V oltage Range Crossover Point I O Maximum Output Current Figure 3: Constant V oltage/Constant Cu.
Reference PS280 & PS283 User Manual 11 3. Rotate the V OL T AGE knob away from zero sufficiently to light the C.C. indicator . 4. Set the meter selection switch to AMPS so that the LED display shows the current. 5. Adjust the CURRENT knob for the desired current limit.
Reference 12 PS280 & PS283 User Manual In stacked mode, you connect the negative output terminal of one variable power supply to the positive output terminal of the other . The stacked configuration allows you to test a circuit requiring between 30 and 60 V .
Reference PS280 & PS283 User Manual 13 4. Plug one of the test leads into the positive output terminal. 5. Plug the other test lead into the negative output terminal. 6. Press POWER to turn of f the PS280 or PS283. 7. Clip the positive test lead to the positive pole of your device.
Reference 14 PS280 & PS283 User Manual 5V FIXED 3A GND GND SLA VE MASTER Load 2 Load 1 0 to 2 A (PS280) 0 to 1 A (PS283) –5 V 3A –5 TO +25 V Load 3 0 to 2 A (PS280) 0 to 1 A (PS2.
Reference PS280 & PS283 User Manual 15 4. Set both variable supply CURRENT controls to midrange. 5. Set the AMPS/V OL TS switches for both power supplies to display volts. 6. T urn on the POWER to the PS280 or PS283. The display should read 0 V for both variable power supplies.
Reference 16 PS280 & PS283 User Manual T o test a circuit in a independent ground-referenced split application mode, follow these steps: 1. T urn the POWER off to the PS280 or PS283. 2. Connect the outputs as shown in Figure 6. 3. Set both variable supply VOL T AGE controls to the minimum setting.
Reference PS280 & PS283 User Manual 17 Figure 8 shows the configuration for three ground-referenced positive power supplies. Load 3 0 to 30 V 0 to 2 A (PS280) 0 to 1 A (PS283) Load 2 0 to 30 V 0 t.
Reference 18 PS280 & PS283 User Manual 5V FIXED 3A GND GND SLA VE MASTER Load 2 Load 1 –5 V 0 to +60 V Figure 9: Independent Positive Stacked Application T o test a circuit in the independently stacked mode, follow these steps: 1. T urn the POWER off to the PS280 or PS283.
Reference PS280 & PS283 User Manual 19 Figure 10 shows a stacked application in which you have a 0 to –60 V output from the variable power supplies and a +5 V output from the FIXED power supply .
Reference 20 PS280 & PS283 User Manual T racking Modes There are two tracking modes in which you can operate the PS280 or PS283: series and parallel. Series. In series mode, the positive output terminal of the master variable power supply is internally connected to the negative output terminal of the slave power supply .
Reference PS280 & PS283 User Manual 21 1. T urn the POWER off to the PS280 or PS283. 2. Connect the outputs as shown in Figure 12. 5V FIXED 3A GND GND SLA VE MASTER Load 1 0 to +60 V INTERNAL Figure 12: Series T racking Application 3.
Reference 22 PS280 & PS283 User Manual NOTE . In series tracking mode, the curr ent flowing through the two supplies must be equal. Ther efor e, the maximum curr ent limit is the lower of the values set by the two curr ent contr ol knobs. 7. T urn on the POWER to the PS280 or PS283.
Reference PS280 & PS283 User Manual 23 MASTER SLA VE Figure 13: Parallel T racking Inside the PS280 or PS283 T o test a circuit in the parallel tracking mode, follow these steps: 1. T urn the POWER off to the PS280 or PS283. 2. Connect the outputs as shown in Figure 14 on page 24.
Reference 24 PS280 & PS283 User Manual 5V FIXED 3A GND GND SLA VE MASTER Load 1 0 to +30 V INTERNAL 0 to 4 A (PS280) 0 to 2 A (PS283) Figure 14: Parallel T racking Application 7. Adjust the output voltage to the desired level using the master V OL T AGE knob.
PS280 & PS283 User Manual 25 Appendix A: Specifications T able 1: Physical Characteristics Dimension Measurement Width 255 mm (10.0 in) Height 145 mm (5.
Appendix A: Specifications 26 PS280 & PS283 User Manual T able 3: Operational Characteristics (Cont.) Characteristic Measurement Line Regulation (CC) 0.2% +3 mA Load Regulation (5 V) 0.2% Load Regulation (CV) 0.01% +3 mV (rating current 3A ) 0.
Appendix A: Specification s PS280 & PS283 User Manual 27 T able 4: Electrical Characteristics Characteristic Measurement Line voltage 90 to 1 10 108 to 132 198 to 242 216 to 250, all V AC at 50–.
Appendix A: Specifications 28 PS280 & PS283 User Manual.
PS280 & PS283 User Manual 29 Appendix B: Maintenance This appendix provides information for the basic maintenance of the PS280 or PS283 Laboratory DC Power Supply . Cleaning T o clean the Laboratory DC Power Supply , use a soft cloth dampened in a solution of mild detergent and water .
Appendix B: Maintenance 30 PS280 & PS283 User Manual T roubleshooting Electronic maintenance on the power supply must be performed by a trained technician. However , an operator can perform some basic and routine maintenance. Perform the following steps to isolate the fault: 1.
Appendix B: Maintenance PS280 & PS283 User Manual 31 5. V erify that the line settings on the rear panel match the line voltage. Do they? Y es Go to step 7. No Go to step 6. 6. Reset the line settings. Refer to Pr eparing the Power Supply for Use on page 2.
Appendix B: Maintenance 32 PS280 & PS283 User Manual.
PS280 & PS283 User Manual 33 Appendix C: Replaceable Parts Replaceable parts may be ordered directly from your authorized T ektronix dealer . Standard Accessories The following items are shipped w.
Appendix C: Replaceable Parts 34 PS280 & PS283 User Manual The following power cords are available: T able 8: Accessory Power Cords Plug Configuration Normal Usage T ektronix Part Number North Ame.
An important point after buying a device Tektronix PS283 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Tektronix PS283 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 Tektronix PS283 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Tektronix PS283 you will learn all the available features of the product, as well as information on its operation. The information that you get Tektronix PS283 will certainly help you make a decision on the purchase.
If you already are a holder of Tektronix PS283, 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 Tektronix PS283.
However, one of the most important roles played by the user manual is to help in solving problems with Tektronix PS283. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Tektronix PS283 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
