
Chapter 13 SCC Series Modules
©
National Instruments Corporation 13-3 DAQ Hardware Overview Guide
Each version of the SCC-AI series modules is used for measuring signals
within specific ranges, as shown in Table 13-1.
SCC-CI20 Current Input Module
The SCC-CI20 is a dual-channel module that accepts 0–20 mA current
inputs. Each channel of the SCC-CI20 includes a precision 249 Ω current
conversion resistor that converts a 0–20 mA signal to a 0–5 V signal and a
differential instrumentation amplifier with low-impedance outputs for
maximum scanning rates by the DAQ device.
SCC-SG Series Strain-Gauge Modules
The SCC-SG series modules are strain-gauge modules designed for
full-bridge, half-bridge, 120 Ω quarter-bridge and 350 Ω quarter-bridge
strain-gauge measurements. The SCC-SG family consists of two groups—
the SCC-SG0x strain-gauge input series modules and the SCC-SG11 shunt
calibration module.
The SCC-SG0x strain-gauge series consists of the SCC-SG01, SCC-SG02,
SCC-SG03, and SCC-SG04. Each module consists of two strain-gauge
input channels, offset-nulling circuitry for each channel, and a 2.5 V
excitation circuit. Each input channel includes an instrumentation amplifier
with differential inputs and a fixed gain of 100. The output of each amplifier
is filtered and buffered to prevent settling time delays. The SCC-SG01
works with 120 Ω quarter-bridge setups. The SCC-SG02 works with 350 Ω
Table 13-1.
SCC-AI Series Module Input/Output Range, Gain, and Bandwidth
Model Input Range Output Range Gain Bandwidth
SCC-AI01 ±42 V ±8.4 V 0.2 10 kHz
SCC-AI02 ±20 V ±10 V 0.5 10 kHz
SCC-AI03 ±10 V ±10 V 1 10 kHz
SCC-AI04 ±5 V ±10 V 2 10 kHz
SCC-AI05 ±1 V ±10 V 10 10 kHz
SCC-AI06 ±100 mV ±10 V 100 10 kHz
SCC-AI07 ±50 mV ±10 V 200 10 kHz
SCC-AI13 ±10 V ±10 V 1 4 Hz
SCC-AI14 ±5 V ±10 V 2 4 Hz
Comentários a estes Manuais