National Instruments Module SCXI-1125 Manual de usuario descargar pdf (Pagina 84)

Common Questions

This appendix lists common questions related to the use of the SCXI-1125.

The SCXI-1125 is backward compatible with the SCXI-1120, but what

are the major differences between the SCXI-1120 and the SCXI-1125?

Table D-1 compares the major specifications and features of the two

modules. Other specifications and features of the SCXI-1125 are the same

or very similar to the SCXI-1120.

Table D-1. Comparison of the SCXI-1125 with the SCXI-1120

Feature SCXI-1120 SCXI-1125

Analog input 8 8

Input range ±5 V, ±250 V with SCXI-1327 ±5 V, ±300 V with SCXI-1327,

±1000 VDC with TBX-1316

Isolation 250 V

rms

300 V

rms

Gains 1, 2, 5, 10, 20, 50, 100, 200, 250, 500,

1000, and 2000 jumper selectable

1, 2, 5, 10, 20, 50, 100, 200, 250, 500,

1000, and 2000 software selectable

Filters 4 Hz or 10 kHz jumper selectable 4 Hz or 10 kHz software selectable

Autozero Not supported Software configurable and scannable

Calibration Manually rotateable potentiometers

for one-point offset calibration

Software internal one-point offset

calibration, software external

two-point offset and gain calibration,

and onboard calibration constant

storage in EEPROM

Scanning 333 kS/s with consecutive channels 333 kS/s with nonconsecutive and

repeating channels (random scanning)

CJC scanning M TEMP (non-scannable) or

D TEMP (direct channel)

M TEMP, CJ TEMP (scannable)

Offset error ±6 µV ± 3 mV/gain 0.2 mV/gain typical

Gain error ±0.2% typ, ±0.6% max ±0.03% typ, ±0.08% max

1 2 ... 79 80 81 82 83 84 85 86 87 88 89 ... 100 101

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National Instruments Module SCXI-1125 Manual de usuario Pagina 84