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SCC-LP Series Lowpass Filter Modules User Guide 6 ni.com
Using the SCC-LPXX when Scaling Voltage Measurements
If you configured the SCC-LPXX using Measurement & Automation
Explorer (MAX) and you are using NI-DAQ, the voltage reading you get
from the E Series DAQ device accounts for the voltage scaling effect of the
SCC-LPXX. Otherwise, you must scale the readings as follows:
1. Read the SCC-LPXX channel on the E Series DAQ device
V
ESERIES
(CHX).
2. Calculate the SCC-LPXX voltage using this formula:
V
LP
= 2V
ESERIES
where
V
LP
is the SCC-LPXX input voltage.
V
ESERIES
is the E Series DAQ device input voltage.
Specifications
These ratings are typical at 25 °C unless otherwise stated.
Amplifier Characteristics
Number of input channels.......................2 DIFF
Input signal range ...................................±10 V
Output signal range.................................±5 V
Gain ........................................................0.5
Input impedance .....................................10 GΩ in parallel with 10 pF
(powered on)
10 kΩ
(powered off or overloaded)
Gain error................................................Adjustable to 0% of reading
Offset-voltage error ................................350 µV typ
(referred to input, RTI)
1
1.5 mV max
2
1
This specification is calculated relative to the input range of the module.
2
Applicable at 25 °C.