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©
National Instruments Corp.
17
FP-TB-10 Operating Instructions
Specifications
Analog Input Modules
Number of inputs
Thermocouple modules .............. 2 differential
Other types ................................. 2 single-ended
Measurement resolution.................... 12 bits (1 part in 4,096)
Input impedance
Voltage inputs ............................. 2.2 M
Ω
Current inputs ............................. 133
Ω
Excitation current (RTDs)
Four-wire .................................... 100
µ
A
Three-wire .................................. 100
µ
A
Two-wire .................................... 550
µ
A
Measurement bandwidth
Voltage inputs ............................. 20 Hz or 2 kHz,
programmable
Current inputs ............................. 20 Hz or 100 Hz
Thermocouple inputs.................. 20 Hz
RTD inputs ................................. 15 Hz
Step response time
Voltage and current inputs.......... 1.5 ms
RTD inputs ................................. 42 ms
Thermocouple inputs.................. 100 ms
Input protection
Current inputs ............................. 38 mA
Voltage inputs
.............................±
30 V
Thermocouple, RTD
...................±
6 V