Manuale d’uso / di manutenzione del prodotto CIO-DAC08 del fabbricante 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.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Omega Engineering CIO-DAC08 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Omega Engineering CIO-DAC08 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Omega Engineering CIO-DAC08 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Omega Engineering CIO-DAC08 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Omega Engineering CIO-DAC08, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Omega Engineering CIO-DAC08.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Omega Engineering CIO-DAC08. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Omega Engineering CIO-DAC08 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
