Measurement-computing CIO-DDA06 Instrukcja Użytkownika Pobierz pdf (Strona 11)

CIO-DDA06 User's Guide Installing the CIO-DDA06

Individual updates

per DAC

(two channels)

XFER

UPDATE # #

Simultaneous updates

from all DACS

jumpered to XFER

XFER

UPDATE # #

Figure 3. Individual / simultaneous update jumper

 When the jumpers are in the XFER position, new output data is held until one or more DACs have been

loaded with new digital data. The new data transfers to the voltage outputs as a group. The simultaneous

transfers occur when any of the CIO-DDA06 addresses are read (and the jumpers are in the

XFER

position).

 When the jumpers are in the

UPDATE ## position, the DAC channel pair is individually updated when the

control register is written.

Power up and reset jumper

The power up and reset jumper (hardware revision 3 and later) controls the state of the DAC outputs when the

CIO-DDA06 board is powered up or reset. This jumper is shown in Fi . gure 4

Figure 4. Power up and reset jumper

zero volts

power up

Undefine

power up

ZERO

STD

ZERO

STD

 When set for ZERO, all DACs are cleared to 0 volts, ±32 mV on power up and reset. In addition, all DACs

are set to simultaneous update mode until first read.

 When set for

STD, the analog output values are undefined on power up and reset.

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Measurement-computing CIO-DDA06 Instrukcja Użytkownika Strona 11