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Portable, Modular Signal
Conditioning Modules
Figure 1. SCC-TC01 and SCC-TC02 Thermocouple
Input Modules (thermocouple plug not included)
Figure 3. SCC-RTD01
SCC-TC Series Thermocouple Inputs
SCC-RTD01 RTD Input
Model
Ch
Description
Part Number
Model
Ch
Description
Part Number
SCC-TC01
1
Thermocouple, spade connector
777459-03
SCC-RTD01
2
2, 3, or 4-wire Pt RTD
777459-18
SCC-TC02
1
Thermocouple input
777459-04
Table 2. SCC-RTD01 RTD Input Module
Table 1. SCC-TC Series Modules
The SCC-TC01 and SCC-TC02 are single-channel modules for conditioning
a variety of thermocouple types, including J, K, T, B, E, N, R, and S, and
millivolt inputs with a range of ±100 mV. The SCC-TC modules include a 2
Hz lowpass filter, instrumentation amplifier with a gain of 100, and buffered
outputs for maximum scanning rates by the E Series DAQ device. The input
circuitry of the SCC-TC modules also includes high-impedance bias resistors
for open-thermocouple detection as well as handling both floating and
ground-referenced thermocouples. The SCC-TC modules include an
onboard thermistor for cold-junction compensation (See Figure 2).
When an SCC-TC is installed in the SC-2345, the thermocouple
signal and the cold-junction signal are routed to two input channels
of the E Series DAQ device, channels X and X+8, respectively, where X
is any channel 0 through 7. For example, if an SCC-TC module is
installed in socket J1 of the SC-2345, the thermocouple signal is
measured on channel 0 while the cold-junction sensor output is
measured on channel 8.
Two versions of the SCC-TC are available. The SCC-TC01
includes a two-prong uncompensated thermocouple jack that
accepts any miniature
or subminiature two-
prong male thermocouple
plug. The SCC-TC02
includes a removable
screw terminal plug that
includes an additional
connection for grounding
thermocouple shields.
The SCC-RTD01 is a dual-channel module
that accepts 2, 3, or 4-wire Platinum RTDs.
Each channel of the SCC-RTD01 has
an amplifier with a gain of 25 and a
30 Hz lowpass filter. In addition, each
module has a 1 mA excitation source
for powering the RTDs.
When the SCC-RTD01 is inserted into
the SC-2345, the two output voltages
are routed to two input channels of the
E Series DAQ device, channels X and
X+8, where X is any channel 0 through 7.
For example, if installed into the J1 socket of the SC-2345, the
output voltages are routed to input channels 0 and 8 of the
E Series DAQ device (See Figure 4).
EXPRESS
CODES
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scc
Red
Red
SCC-RTD01
6
5
4
3
2
1
RTD
—
I
EX
(1 mA)
Black
Black
SCC-TC
E Series Device
—
—
Red
Ch(X )
Red
Ref5V
10 M
Ch(X +8)
RTD
10 k
Black
2-Pole Filter/
Buffer Stage
Offset
Calibrator
TC+
+
—
CH(x)
10 k
Black
4-Wire, 2 Channels
TC-
10 M
Red
GND
SCC-RTD01
Ref5V
AISENSE
4.75 k
1%
AIGND
6
5
4
3
2
1
—
RTD
I
EX
(1 mA)
Black
Black
5k
0.1%
LM 4040
2.5 V
0.1%
—
—
Ch(X )
Red
0.1
µ
F
-t
o
+
—
CH(x+8)
5k
at 25
o
C
+
10
µ
F
16 V
0.1
µ
F
Ch(X +8)
RTD
2.5 k
Black
NOTE: GND available on SCC-TC02 only
Black
3-Wire, 2 Channel
s
Figure 2. Block Diagram of SCC-TC01 and SCC-TC02
Figure 4. Block Diagram of the SCC-RTD01
558
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
Portable, Modular Signal
Conditioning Modules
SCC-SG03
Half-Bridge
Ch(X )+
6
+
–
x 100
Filter
ACH(X )
5
Half-Bridge
Completion
Reference
Ch(X+8 )+
4
+
–
3
V
EX
+
V
EX
–
x 100
Filter
ACH(X +8)
Figure 5. SCC-SG Strain-Gauge Input Modules
2
1
Half-Bridge
Completion
Reference
Screw Terminals
SCC-SG Series Strain-Gauge Inputs
Figure 7. Block Diagram of the SCC-SG03
Model
Ch
Description
Part Number
SCC-SG01
2
120
Ω
, quarter-bridge strain gauges
777459-13
SCC-SG04
SCC-SG02
2
350
Ω
, quarter-bridge strain gauges
777459-14
Full-Bridge
CH(X )+
CH(X )–
6
5
4
+
–
SCC-SG03
2
Half-bridge strain gauges
777459-15
x 100
Filter
ACH(X )
SCC-SG04
2
Full-bridge strain gauges
777459-16
CH(X+8 )+
SCC-SG11
2
Shunt calibration
777459-17
CH(X +8)-
3
2
1
Table 3. SCC-SG Series Modules
V
EX
+
V
EX
–
+
–
x 100
Filter
ACH
(X +8)
The SCC-SG Series consists of dual-channel strain gauge modules for
conditioning quarter, half, and full-bridge strain gauges. Each module
is designed for a specific type of strain gauge configuration. Each
channel of an SCC-SG module includes an instrumentation amplifier, a
1.6 kHz lowpass filter, and a potentiometer for bridge offset nulling.
Each module also includes a single 2.5 V excitation source.
The SCC-SG11 is a dual-channel shunt calibration module for use
with the SCC-SG Series modules. Each channel includes two terminals
for wiring the 301 k
Ω
, 1%, 1⁄4
Ω
resistor across any two points of your
bridge. You enable shunt calibration for both channels of a module by
writing a logic high to the digital line controlling the SCC-SG11. You
disable shunt calibration by writing a logic low to the same digital line.
When an SCC-SG module is installed in the SC-2345, the strain-
gauge signals are routed to two input channels of the
E Series DAQ device, channels X and X+8 respectively, where X is any
channel 0 through 7.
Screw Terminals
Figure 8. Block Diagram of the SCC-SG04
SC-2345 Connector Block
SCC-SG11
SCC-SG02
CH(X )+
4
3
2
1
Front
V
EX
–
Digital Input Socket (J9)
Single-Stage Analog Input Socket (J1)
SC-2345 with Configurable Connectors
SCC-SG01/02
Quarter-Bridge
Ch(X )+
6
5
4
SCC-SG02
SCC-SG11
CH(X )+
+
–
x 100
Filter
ACH(X )
4
3
2
1
R(X )
Half-Bridge
Completion
Reference
Ch(X+8 )+
R(X +8)
V
EX
+
+
–
3
2
1
x 100
Filter
ACH(X +8)
V
EX
–
Front
Half-Bridge
Completion
Reference
Screw
Terminals
Single-Stage Analog Input Socket (J1)
Digital Input Socket (J9)
Socketed Quarter-Bridge Completion Resistor
Figure 9. Using the SCC-SG11 Shunt Calibration Module
with the SCC-SG02
Figure 6. Block Diagram of the SCC-SG01/SCC-SG02
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
559
Portable, Modular Signal
Conditioning Modules
Figure 10. SCC-ICP01 Accelerometer Input Module
Figure 12. SCC-AI Series Isolated Analog Input Modules
SCC-ICP01 Accelerometer Input
SCC-AI Series Isolated Analog Inputs
Model
Ch
Input Range
Bandwidth
Part Number
Model
Ch
Description
Part Number
SCC-AI01
2
±42 V
10 kHz
777459-20
SCC-ICP01
1
Accelerometer Input
777459-19
SCC-AI02
2
±20 V
10 kHz
777459-21
Table 4. SCC-ICP01 Accelerometer Input Module
SCC-AI03
2
±10 V
10 kHz
777459-22
SCC-AI04
2
±5 V
10 kHz
777459-23
The SCC-ICP01 is a single-channel module that accepts ICP compatible
sensors such as accelerometers and microphones. The SCC-ICP01 has
an amplifier with a gain of two, a 0.8 Hz highpass filter and a 19 kHz
3-pole Bessel lowpass filter. The maximum input range is ±5 V. In
addition, this module has a 4 mA current source to power an ICP
compatible accelerometer or microphone.
When the SCC-ICP01 is inserted into the SC-2345, the single output
voltage is routed to one input channel of the E Series DAQ device,
channel X, where X is any channel 0 through 7. For example, if
installed into the J1 socket of the SC-2345, the output voltage is routed
to input channel 0 of the E Series DAQ device (See Figure 11).
SCC-AI05
2
±1 V
10 kHz
777459-24
SCC-AI06
2
±100 mV
10 kHz
777459-25
SCC-AI07
2
±50 mV
10 kHz
777459-26
SCC-AI13
2
±10 V
4 Hz
777459-27
SCC-AI14
2
±5 V
4 Hz
777459-28
Table 5. SCC-AI Isolated Analog Input Modules
The SCC-AI Series modules are dual-channel isolated analog
input modules for reading input voltages from ±50 mV to ±42 V.
Each channel of an SCC-AI module includes an instrumentation
amplifier, a lowpass filter, and a potentiometer for calibration.
These modules are installation rated for Category II, and provide
safety working isolation of 300 V per module.
When an SCC-AI module is installed in the SC-2345, the input
signals are routed to two input channels of the E Series DAQ device,
channels X and X+8 respectively, where X is any channel 0 through 7.
SCC-ICP01
4
3
2
1
+
–
I
EX
(4 mA)
19 kHz
Lowpass
Bessel
ICP
Sensor
AC
Coupling
+
–
CH(X )
Signal
Source
SCC-AIxx
E Series Device
4
+
+
Figure 11. SCC-ICP01 Accelerometer Input Module
-
LPF
CH(X )
3
-
AISENSE
AIGND
2
+
+
-
CH(X +8)
LPF
1
-
ICP
®
‚ is a registered trademark of PCB Piezotronics, Inc., Depew, New York. ICP is used in
the designation of SCC-ICP01 to indicate that the product is compatible with ICP technology.
NI and the SCC-ICP01 are not affiliated with, licensed or approved by, or otherwise connected
with PCB Piezotronics, Inc.
Figure 13. Block Diagram of SCC-AI Series
560
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
Portable, Modular Signal
Conditioning Modules
Figure 14. SCC-A10 Voltage Attenuator Module
Figure 16. SCC-CI20 Current Input Module
SCC-A10 Voltage Attenuator
SCC-CI20 Current Input
Model
Ch
Description
Part Number
Model
Ch
Description
Part Number
SCC-CI20
2
0-20 mA current input
777459-05
SCC-A10
2
Attenuator input
777459-06
Table 6. SCC-A10 Module
Table 7. SCC-CI20 Current Input Module
The SCC-A10 is a dual-channel module that accepts input voltage
sources up to 100 V. Each channel of the SCC-A10 includes a 10:1
attenuation circuit and differential instrumentation amplifier with low-
impedance outputs for maximum scanning rates by the DAQ device.
The attenuation circuit includes high-impedance bias resistors, so you
can connect floating or ground-referenced inputs to the SCC-A10
without adding external bias resistors. The SCC-A10 also provides
overvoltage protection (up to 250 V
rms
) for your DAQ system.
When an SCC-A10 module is installed in the SC-2345, the
attenuated input signals are routed to two input channels of the
E Series DAQ device, channels X and X+8 respectively, where
X is any channel 0 through 7.
The SCC-CI20 (Figure 16) is a dual-channel module that accepts two
0 to 20 mA or 4 to 20 mA current loop inputs. Each independent
channel of the SCC-CI20 includes a precision 249
Ω
current
conversion resistor that converts a 0 to 20 mA signal into a 0 to 5 V
signal. Each channel includes a differential instrumentation amplifier
with low-impedance outputs for maximum scanning rates by the
E Series DAQ device, and bias resistors for handling both floating and
ground-referenced current sources. The SCC-CI20 also includes two
spare 249
Ω
replacement resistors.
When the SCC-CI20 is installed in the SC-2345, the two output
voltages are routed to two input channels of the E Series DAQ device,
channels X and X+8, where X is any channel 0 through 7. For example,
if installed into the J1 socket of the SC-2345, the output voltages are
routed to input channels 0 and 8 of the E Series DAQ device.
SCC-A10
Overvoltage
Protection
E Series Device
Signal
Source
4
SCC-CI20
E Series Device
Signal
Source
4
Overvoltag
e
Protection
+
—
+
—
CH(x)
+
—
CH(x)
R3
3
Overvoltage
Protection
3
Overvoltage
Protection
AISENSE
AISENSE
10 M
AIGND
2
Overvoltage
Protection
AIGND
2
Overvoltage
Protection
+
—
CH(x+8)
+
—
+
—
R2
CH(x+8)
1
Overvoltage
Protection
1
Overvoltage
Protection
10 M
Signal source may be floating or ground-referenced.
Signal source may be floating or ground-referenced.
Figure 15. Block Diagram of SCC-A10
Figure 17. Block Diagram of SCC-CI20
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
561
Portable, Modular Signal
Conditioning Modules
Figure 18. SCC-LP01 Lowpass Filter Module
Figure 20. SCC-FV01
SCC-LP Series Lowpass Filters
SCC-FV01 Frequency-to-Voltage Input
Model
Ch
Description
Part Number
Model
Ch
Description
Part Number
SCC-LP01
2
Lowpass filter (25 Hz)
777459-07
SCC-FV01
2
Frequency-to-Voltage (0 to 100Hz)
777459-32
SCC-LP02
2
Lowpass filter (50 Hz)
777459-08
Table 9. SCC-FV01 Frequency-to-Voltage Input Module
SCC-LP03
2
Lowpass filter (150 Hz)
777459-09
SCC-LP04
2
Lowpass filter (1 KHz)
777459-10
The SCC-FV01 (Figure 20) is a dual-channel frequency-to-voltage
conversion module that accepts ±10 V signals up to 100 Hz. The output
scales linearly with the input frequency, and goes to 0 V with a DC input
signal. Each channel triggers on the incoming signal using a threshold
of 0 V and has a hysteresis of 200 mV. For isolated solutions, consider
using the SCC-AI03 cascaded with the SCC-FV01.
When the SCC-FV01 module is inserted into the SC-2345, the two
outputs are routed to two input channels of the E Series DAQ device,
channels X and X+8, where X is any channel 0 through 7. For example,
if installed into the J1 socket of the SC-2345, the outputs are routed to
channels 0 and 8 of the E Series DAQ device. (See Figure 21).
Table 8. SCC-LP Series Lowpass Filter Modules
The SCC-LP Series (Figure 18) consists of dual-channel, lowpass filter
modules that accept two ±10 V signals. Each channel has a fourth-
order Butterworth filter. The cut-off frequency is specific to the module
and applies to both channels of the module.
When the SCC-LP Series module is inserted into the SC-2345, the
two output voltages are routed to two input channels of the E Series
DAQ device, channels X and X+8, where X is any channel 0 through
7. For example, if installed into the J1 socket of the SC-2345, the
output voltages are routed to input channels 0 and 8 of the E Series
DAQ device (See Figure 19).
SCC-FV
E Series Device
Signal
Source
4
SCC-LP
E Series Device
Signal
Source
4
+
—
+
—
CH(x)+
F-V
1k
+
—
+
—
Fourth-Order
Butterworth
CH(x)
3
1k
3
AISENSE
AISENSE
AIGND
10 M
2
AIGND
2
+
—
1k
+
—
F-V
CH(x+8)+
+
—
+
—
Fourth-Order
Butterworth
CH(x+8)
1
1k
1
10 M
Signal source may be floating or ground-referenced.
Signal source may be floating or ground-referenced.
Figure 19. Block Diagram of SCC-LP Series
Figure 21. Block Diagram of the SCC-FV01
562
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
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