U2352A Datasheet, PDF (19/25 Pages) Keysight Technologies – USB Modular Multifunction Data Acquisition Devices

Product specifications
General characteristics
Number of channels
Input voltage range for voltage mode
Input voltage (thermocouple mode)
Sampling rate for thermocouple mode
Sampling rate for overall module
Thermocouple types
Input specifications
Accuracy (thermocouple mode)
–– Overall gain error
–– Overall offset error
–– Nonlinearity
System noise (rms)
–– Gain (× 1)
–– Gain (× 100)
Common Mode Rejection Ratio (CMRR)
–– Voltage mode
–– Thermocouple mode
Cold junction accuracy
Input characteristics
Bandwidth (voltage mode)
Bandwidth (thermocouple mode)
Overvoltage protection¹
Input impedance
Input bias current
Input offset current
Gain drift
Offset drift
Filter cutoff frequency (–3 dB)
(thermocouple mode)
Filter type (thermocouple mode)
Other features
Recommended warm up time
31 differential and 1 CJC
±10 V (signal + common mode)
±100 mV
10 kSa/s total for all channels
500 kSa/s
J, K, R, S, T, N, E, and B
0.06% (23 °C ± 5 °C )
15 μV (without zeroing) (23 °C ± 5 °C )
6 μV (with zeroing)
< 0.005% of full scale range
100 μVrms
5 μVrms
> 60 dB
> 80 dB
±1.0 °C typical (23 °C ± 5 °C )
±1.5 °C typical (0 °C to 18 °C, 28 °C to 55 °C)
> 500 kHz
4.0 Hz
TC Mode²
–– Common mode: ±17 V (TC+ and TC– with respect to GND)
–– Differential mode: ±7 V (Differential voltage between TC+ and TC–)
Bypass mode
±20 V (TC+ input with respect to GND)
Power-off Mode
±11 V (TC+, TC– input with respect to GND)
> 1 GΩ
±2.5 nA max
±1.5 nA max
60 ppm/°C max
1 μV/°C max
4.0 Hz
Low Pass RC Filter
30 minutes
1 _{The overvoltage protection levels specified above indicate the maximum voltage each input pin can tolerate without resulting in any damages. However, prolonged exposure to}
these levels may affect device safety and reliability. Hence, it should be avoided where possible.
2 _{On the channels configured for thermocouple mode, the TC+ and TC– pins can tolerate up to ±17 V of differential voltage for a few minutes. However, exceeding a voltage}
range of ±100 mV on these channels can cause additional current to be drawn from the device’s power supply regulators, which may damage the device if multiple channels are
overdriven for prolonged periods. This is the case when a voltage source is tied across the TC_n+ and TC_n– pin. Voltage sources greater than ±100 mV should be tied to TC_n+ and
GND (floating source), or TC_n+ and TC_n+1+ (grounded source), and have the channels set for bypass mode.
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