National Instruments SCXI -1125 用户手册

© National Instruments Corporation

This appendix lists common questions related to the use of 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 

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