SCXI-1313 Installation Guide
4
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terminal block. National Instruments is
not
liable for any damages or injuries resulting
from inadequate safety earth-ground connections.
Do
not
loosen or re-orient the safety-ground lug hardware when connecting the safety
ground wire; to do so reduces the safety isolation between the high voltage and safety
ground.
Clean the module and accessories by brushing off light dust with a soft non-metallic brush.
Remove other contaminants with a stiff non-metallic brush. The unit
must
be completely
dry and free from contaminants before returning it to service.
The terminal block
must
be used with a UL-listed SCXI chassis.
Configuring the High-Voltage Attenuator
Each channel has a 100:1 high-voltage attenuator. To enable or disable the
attenuator, either change the default configuration settings for the
SCXI-1313 in Measurement & Automation Explorer or adjust the input
limit ranges in your application. When using virtual channels, the input
limits configured in the virtual channel configurator are used to set the
attenuation circuitry appropriately.
The SCXI-1313 is factory calibrated to the specifications listed in the
section of this guide and is shipped with a calibration
certificate. The calibration EEPROM on the SCXI-1313 stores calibration
constants, which provide software correction values, that the application
development software uses to correct your measurements for gain errors in
the attenuation circuitry.
Table 1.
Input Signal Range Versus Gain
Overall
Gain
Overall Voltage
Range
Module
Gain
Terminal
Block Gain
0.01
300 V
rms
or VDC
1
0.01
0.02
±
250 V
peak
or VDC
2
0.01
0.05
±
100 V
peak
or VDC
5
0.01
0.1
±50 V
peak
or VDC
10
0.01
0.2
±25 V
peak
or VDC
20
0.01
0.5
±10 V
peak
or VDC
50
0.01
1
±5 V
peak
or VDC
1
1
2
±2.5 V
peak
or VDC
2
1
2.5
±2.0 V
peak
or VDC
250
0.01
Summary of Contents for SCXI-1313
Page 14: ......
