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SCXI 32-Channel
Analog Input Modules
SCXI-1100
32 channels
250 kS/s (at gains up to 100)
Overvoltage protection to ±25 V
powered on
Millivolt, volt, and current inputs
SCXI-1104,
NEW! SCXI-1104C
32 channels
333 kS/s
Instrumentation amplifier
per channel
Lowpass filter per channel
2 Hz (SCXI-1104), 10 kHz (SCXI-1104C)
Overvoltage protection to ±60 VDC
±60 VDC input range
SCXI-1102B,
SCXI-1102C
32 channels
333 kS/s (any gain)
Programmatic input range from
±100 mV to ±10 V (per channel)
Lowpass filter per channel
200 Hz (SCXI-1102B)
10 kHz (SCXI-1102C)
Overvoltage protection to ±42 V
Millivolt, volt, and current input
Driver Software
NI-DAQ for
Windows 2000/NT/Me/9x
Mac OS (SCXI-1100 only)
Application Software
LabVIEW
Measurement Studio
Lookout
Calibration Certificate Included (SCXI-1102 B/C, SCXI-1104)
Signal Compatibility
range of each channel independently.
Filter settings are preset, and specific to
each module (1102B – 200 Hz, 1102C –
10 kHz, 1104 – 2 Hz, 1104C – 10 kHz). You
can scan channels at full hardware rate (up
to 3 µs per channel) at any gain setting.
Each channel includes input protection
circuitry for up to ±42 V for the SCXI-1102B/C,
and ±60 V for the SCXI-1104 Series.
Module
±5 mV to ±100 mV
±100 mV to ±10 V
±60 V
0-20 mA
EXPRESS
CODES
SCXI-1100
–
SCXI-1102B
–
–
SCXI-1102C
–
–
For information or to
buy products online,
visit ni.com/catalog
and enter:
SCXI-1104
–
–
–
SCXI-1104C
–
–
–
Table 1. Module Compatibility
scxi1100
scxi1102b
scxi1102c
scxi1104
scxi1104c
Overview
National Instruments offers a variety of 32-channel analog input
modules for SCXI, including the SCXI-1100, SCXI-1102 Series, and
SCXI-1104 Series. The programmable gain and filter settings
are ideal for conditioning a variety of millivolt, volt, and current inputs.
Each module multiplexes the 32 channels into a single channel of the
DAQ device, and you can add modules to increase channel count.
Modes of Operation
Multiplexer
In multiplexed mode, these modules
multiplex all conditioned signals onto
channel MCH0 of the rear signal connector, to which you can connect
a single input channel of the DAQ device. Furthermore, you can
connect the multiplexed output of each module using programmable
switches to analog bus 0 of the SCXIbus and to other modules. Several
SCXI modules can operate in this manner with a single DAQ device.
Control circuitry also includes a Module ID register, which can be read
through software for module identification.
Each module also has internal counters for the high-speed
automatic scanning mode with any E Series product. A scan clock
signal from the DAQ device synchronizes the scanning. Using this
hardware scanning mode, you can scan channels at rates up to
333 kS/s (3 µs per channel) on the SCXI-1102B, SCXI-1102C, SCXI-1104,
and SCXI-1104C. With the SCXI-1100, you can achieve hardware
scanning rates up to 250 kS/s (4 µs per channel) depending on input
range and filter settings.
Analog Input
SCXI-1100
Each analog input channel of the SCXI-1100 is multiplexed, and then
passed to a single software-programmable gain instrumentation
amplifier (PGIA). If needed, the signal can pass through a single
jumper selectable lowpass filter. Some filter and gain settings limit your
scanning rate. Solder pads are available at each input for differential
filtering. Each channel includes input protection circuitry for up to
±25 V powered on and ±15 V powered off.
SCXI-1102 Series, SCXI-1104 Series
Each analog input channel passes through a PGIA and lowpass filter,
before it is multiplexed. With this architecture, you program the input
482
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
SCXI 32-Channel
Analog Input Modules
Figure 1. SCXI-1100 Block Diagram
*
*SCXI-1102 Series only
Figure 2. SCXI-1102 Series and SCXI-1104 Series Block Diagram
*Note: Not available on the SCXI-1104 or SCXI-1104C
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
483
SCXI 32-Channel
Analog Input Modules
Terminal Block
Type
CJ Sensor
Compatable Modules
Cabling
Special Functions
Page Number
(Part Number)
SCXI-1300
Screw terminals
SCXI-1100, SCXI-1102B,
–
–
538
(777687-00)
front-mounting
SCXI-1102C, SCXI-1104, SCXI-1104C
SCXI-1303
Screw terminals
SCXI-1100, SCXI-1102B,
–
Isothermal construction
538
(777687-03)
front-mounting
SCXI-1102C
Prewired ground referencing
SCXI-1308
Screw terminals
–
SCXI-1100, SCXI-1102B,
–
249
precision resistor
538
(777687-08)
front-mounting
SCXI-1102C
BNC-2095
BNC connectors
–
SCXI-1100, SCXI-1102B
SH96-96 or
Prewired ground referencing
548
(777508-01)
rack-mounted
SCXI-1102C, SCXI-1104
1
, SCXI-1104C
1
R96-96 cable
TC-2095
Thermocouple plugs,
SCXI-1100, SCXI-1102B,
SH96-96 or
Isothermal construction
540
(777509-01)
rack-mounted
SCXI-1102C
R96-96 cable
Prewired ground referencing
TBX-1303
Screw terminals
SCXI-1100, SCXI-1102B,
SH96-96 or
DIN-rail mount
542
(777207-03)
DIN-rail mount
SCXI-1102C, SCXI-1104, SCXI-1104C
R96-96 cable
Isothermal construction
Prewired ground referencing
3 terminals per channel
TBX-96
Screw terminals
SCXI-1100, SCXI-1102B,
SH96-96 or
DIN-rail mount
542
(777264-01)
DIN-rail mount
SCXI-1102C, SCXI-1104,
R96-96 cable
3 terminals per channel
SCXI-1310
Solder pins
–
SCXI-1100, SCXI-1102B,
–
Low-cost connector-and-shell
538
(777687-10)
front-mounting
SCXI-1102C, SCXI-1104,
assembly
1
You must disable the ground referencing for use with the SCXI-1104C
Table 2. Terminal Block Options for SCXI-1100, SCXI-1102 Series, and SCXI-1104 Series
Cold-Junction Compensation
(not for SCXI-1104 Series)
All modules except the SCXI-1104 Series read the cold-junction sensor
from the SCXI-1300, SCXI-1303, TBX-1303, and TC-2095 terminal
blocks. The SCXI-1100 must perform a separate operation to read this
sensor. The SCXI-1102 Series can read this sensor as just another input
channel during a high-speed hardware scanning operation.
Signal Connection
A variety of terminal block options simplify connection of signal wires
to these SCXI modules. Front-mounting terminal blocks plug directly
into an SCXI module, and provide screw terminals for signal
connections. Alternatively, you can use DIN-rail mountable TBX-style
terminal blocks which connect to the SCXI module by a cable. Finally,
you can select from rack-mounted accessories for BNC or
thermocouple applications. For terminal block options, see Table 2.
Calibration
Each module includes calibration hardware to remove errors. For the
SCXI-1100, you programmatically ground the inputs of the
instrumentation amplifier, store the readings in software, and thus
subtract this value from future readings.
The SCXI-1102 Series and SCXI-1104 Series modules include a
calibration EEPROM. You can perform two-point calibrations and store
the results in user-modifiable locations. The software transparently uses
these constants to correct for gain and offset errors for each channel.
Factory-provided calibration constants are also available, and are stored
in a protected memory location in the EEPROM.
Ordering Information
SCXI-1100
..........................................................776572-00
SCXI-1102B
......................................................776572-02B
SCXI-1102C
......................................................776572-02C
SCXI-1104
..........................................................776572-04
SCXI-1104C
......................................................776572-04C
Accessories
SCXI current resistors (4-pack)
.........................776582-01
SH96-96 shielded cable 1 m
............................183228-01
R96-96 ribbon cable 1m
..................................183425-01
See page 470 to configure your complete SCXI system.
Extended Warranty and
Value Added Services
..........................................page 880
484
National Instruments
Tel: (512) 794-0100 • Fax: (512) 683-9300 • info@ni.com • ni.com
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