National Instruments Module SCXI-1125 Uživatelský manuál stáhnout pdf (Strana 86)

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Appendix D Common Questions

In LabVIEW, can I use different input limits for the same SCXI-1125

channel if I repeat the channel in the SCXI channel string array?

No, the SCXI-1125 cannot dynamically change the gain settings during

scanning. Therefore, channels with similar input ranges should be grouped

together in the channel string array. Make sure that repeated channels in

different indices of the channel string array have the same input limits in

the corresponding input limits array.

In LabVIEW, can I use virtual channels with parallel mode channels

on the SCXI-1125?

Yes, virtual channels work with parallel mode operation on the SCXI-1125.

The E/M Series DAQ device must be directly connected to the module in

parallel mode operation. Also, virtual channels that use built-in CJC are

disabled and cannot be used in parallel mode.

In LabVIEW, can I use the calgnd channel string when the SCXI-1125

is in parallel mode?

Yes, you can autozero the SCXI-1125 in LabVIEW when using the module

in parallel mode.

Table D-2. Digital Signals on the SCXI-1125

Traditional

DAQ Signal

Name

DAQmx

Signal Name

SCXI Signal

Name

50-Pin

Connector

68-Pin

Connector

Direction

DIO0 P0.0 SER DAT IN 25 52 Output

DIO4 P0.4 SER DAT OUT 26 19 Input

DIO1 P0.1 DAQ D*/A 27 17 Output

DIO2 P0.2 SLOT 0 SEL* 29 49 Output

SCANCLK AI HOLD

COMP,

AI HOLD

SCAN CLK 36 46 Output

EXTSROBE* EXTSROBE SER CLK 37 45 Output

STARTSCAN AI SAMP

CLK,

AI SAMP

SYNC* 46 38 Output

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 100 101

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National Instruments Module SCXI-1125 Uživatelský manuál Strana 86

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