Instruction/ maintenance manual of the product CIO-DAC16 Omega Engineering
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CIO-DAC16 and CIO-DAC08 User’s Manual Revision 4 October, 2000.
MEGA-FIFO, the CIO prefix to data acquisition board model numbers, the PCM prefix to data acquisition board model numbers, PCM-DAS08, PCM-D24C3, PCM-DAC02, PCM-COM422, PCM-COM485, PCM-DMM, PCM-DAS16D/.
Table of Contents 12 5 SPECIFICATIONS ............................................ 9 4.1 Control & Data Registers ..................................... 9 4 ARCHITECTURE .............................................. 8 3.10 Connector Diagram ......
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1 INTRODUCTION The CIO-DAC16 is a 16 channel analog output board. The CIO-DAC08 is an eight channel analog output board. The analog outputs are dual-DAC AD7273s with each output buffered by an OP07. The CIO-DAC family is compatible with MetraByte's DDA-06 but lacks digital outputs.
3 HARDWARE INSTALLATION 3.1 Initial Board Setup The CIO-DAC## has one bank of gain switches for each analog output channel, one base address switch, a simultaneous update jumper for each DAC pair, a “power-up state” selection jumper and one wait state jumper block which must be set before installing the board in your computer.
Table 3-1. PC I/O Addresses SERIAL PORT 3F8-3FF EGA 2B0-2BF FLOPPY DISK 3F0-3F7 PARALLEL PRINTER 270-27F SERIAL PORT 3E8-3EF ALT BUS MOUSE 23C-23F CGA 3D0-3DF BUS MOUSE 238-23B EGA 3C0-3CF EXPANSION U.
3.3 Wait State Jumper The CIO-DAC## boards have a wait state jumper which can enable an on-board wait state generator. A wait state is an extra delay injected into the processor's clock via the bus. This delay slows down the processor when the processor addresses the CIO-DAC## board so that signals from slow devices (chips) will be valid.
. Figure 3-3. Simultaneous Update Jumper 3.5 Analog Output Range Switches The analog output voltage range of each channel can be set with a set of five ganged DIP switches. The switch blocks are located on the board below the calibration potentiometers.
To set a channel to a particular range, read the switch positions as UP or DN (down) from left to right in the row beside the range you desire. For example, the ±5V range is: UP>DN>DN>UP>DN. 3.6 Installing the CIO-DAC## in the Computer Turn the power off.
3.9 Signal Connection The analog outputs of the CIO-DAC## are two-wire hookups. A signal, labeled D/A # OUT on the connector diagram below, and a Low Level Ground (LLGND). The low level ground is an analog ground and is the ground reference which should be used for all analog hookups.
3.10 Connector Diagram The CIO-DAC## connector is a 37-pin D-type connector accessible from the rear of the PC through the expansion backplate. The connector accepts female 37-pin D type connectors, such as those on the C37FF-2, 2 foot cable with connectors.
4 REGISTER ARCHITECTURE The CIO-DAC## is a simple board to understand. All control and data is read/written with simple I/O read and write commands. No interrupt or DMA control software is required. Thus, the board's functions are easy to control directly from BASIC, C or PASCAL.
In summary form, the registers and their function are listed in the following table. Each register has eight bits which can constitute a byte of data or eight individual read/write functions. The CIO-DAC08 has 8 pairs of register (Base + 0 through Base + 15) and the CIO-DAC16 has 16 pairs of register (Base + 0 through Base + 31).
4.2 Output Transfer Functions To program a DAC, you must select the output you desire in volts, then apply a transfer function to that value. The transfer function for code = output is: The UNIPOLAR t.
5 SPECIFICATIONS POWER CONSUMPTION CIO-DAC16 +5V supply 435 mA typical, 525 mA m ax +12V supply 140 mA typical, 180 mA m ax − 12V supply 80 mA typical, 105 mA max CIO-DAC08 +5V supply 435 mA typical.
Update DACs individually or simultaneously (jumper-selectable by pairs) DAC output state on power up and reset undefined ENVIRONMENTAL Operating temperature range 0 to 70°C Storage temperature range .
For your notes. 14.
EC Declaration of Conformity 8 Channel analog output board CIO-DAC08 16 Channel analog output board CIO-DAC16 Description Part Number to which this declaration relates, meets the essential requirement.
OMEGA Engineering Inc. One OMEGA Drive , Stamford , Ct 06801 ( 800 ) 872-9436 E-mail: info@ omega .com www. omega .com.
An important point after buying a device Omega Engineering CIO-DAC16 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Omega Engineering CIO-DAC16 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 Omega Engineering CIO-DAC16 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Omega Engineering CIO-DAC16 you will learn all the available features of the product, as well as information on its operation. The information that you get Omega Engineering CIO-DAC16 will certainly help you make a decision on the purchase.
If you already are a holder of Omega Engineering CIO-DAC16, 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 Omega Engineering CIO-DAC16.
However, one of the most important roles played by the user manual is to help in solving problems with Omega Engineering CIO-DAC16. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Omega Engineering CIO-DAC16 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
