Measurement-computing PCI-DAS6023 Bedienungsanleitung PDF herunterladen (Seite 19)

PCI-DAS6023 and PCI-DAS6025 User's Guide Functional Details

Auxiliary I/O signals

I/O type

Signal name

Function

AUXIN<5:0> sources

(software selectable)

A/D CONVERT

External ADC convert strobe (default)

A/D EXT. TIMEBASE IN

External ADC pacer time base

A/D START TRIGGER

ADC Start Trigger (default)

A/D STOP TRIGGER

ADC Stop Trigger (default)

A/D PACER GATE

External ADC gate (default)

D/A START TRIGGER

DAC trigger/gate (default) (PCI-DAS6025 only)

D/A UPDATE

DAC update strobe (default) (PCI-DAS6025 only)

D/A EXT. TIMEBASE IN

External DAC pacer time base (PCI-DAS6025 only)

AUXOUT<2:0> sources

(software selectable)

STARTSCAN

A pulse indicating start of conversion

SSH

Active signal that terminates at the start of the last

conversion in a scan.

A/D STOP

Indicates end of an acquisition sequence

A/D CONVERT

ADC convert pulse (default)

SCANCLK

Delayed version of ADC convert (default)

CTR1 CLK

CTR1 clock source

D/A UPDATE

D/A update pulse (default) (PCI-DAS6025 only)

CTR2 CLK

CTR2 clock source

A/D START TRIGGER

ADC Start Trigger Out

A/D STOP TRIGGER

ADC Stop Trigger Out

D/A START TRIGGER

DAC Start Trigger Out

Default selections

summary

AUXIN0

A/D CONVERT

AUXIN1

A/D START TRIGGER

AUXIN2

A/D STOP TRIGGER

AUXIN3

D/A UPDATE (PCI-DAS6025 only)

AUXIN4

D/A START TRIGGER (PCI-DAS6025 only)

AUXIN5

A/D PACER GATE

AUXOUT0

D/A UPDATE (PCI-DAS6025 only)

AUXOUT1

A/D CONVERT

AUXOUT2

SCANCLK

DAQ-Sync signals

The DAQ-Sync hardware provides the capability of triggering or clocking up to four slave boards from a master

board to synchronize data input and / or output.

The PCI-DAS6023 and PCI-DAS6025 boards provide the capability of inter-board synchronization with other

boards in the PCI-DAS6000 family. There are five trigger/strobes and a synchronizing clock provided on a 14-

pin header connector. The available signals are:

 DS A/D START TRIGGER

 DS A/D STOP TRIGGER

 DS A/D CONVERT

 DS D/A UPDATE (PCI-DAS6025 only)

 DS D/A START TRIGGER (PCI-DAS6025 only)

 SYNC CLK

Except for the SYNC CLK signal, the DAQ-Sync timing and control signals are a subset of the AUXIO signals

available at the 100-pin I/O connector. These versions of the signals are used for board-to-board

synchronization and have the same timing specifications as their I/O connector counterparts. Refer to the "DAQ

signal timing" section on page 21 for explanations of signals and timing.

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