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U2352A Datasheet(PDF) 19 Page - Keysight Technologies

Part No. U2352A
Description  USB Modular Multifunction Data Acquisition Devices
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Maker  KEYSIGHT [Keysight Technologies]
Homepage  http://www.keysight.com
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U2352A Datasheet(HTML) 19 Page - Keysight Technologies

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Product specifications
General characteristics
Number of channels
31 differential and 1 CJC
Input voltage range for voltage mode
±10 V (signal + common mode)
Input voltage (thermocouple mode)
±100 mV
Sampling rate for thermocouple mode
10 kSa/s total for all channels
Sampling rate for overall module
500 kSa/s
Thermocouple types
J, K, R, S, T, N, E, and B
Input specifications
Accuracy (thermocouple mode)
– Overall gain error
– Overall offset error
– Nonlinearity
0.06% (23 °C ± 5 °C )
15 μV (without zeroing) (23 °C ± 5 °C )
6 μV (with zeroing)
< 0.005% of full scale range
System noise (rms)
– Gain (× 1)
– Gain (× 100)
100 μVrms
5 μVrms
Common Mode Rejection Ratio (CMRR)
– Voltage mode
– Thermocouple mode
> 60 dB
> 80 dB
Cold junction accuracy
±1.0 °C typical (23 °C ± 5 °C )
±1.5 °C typical (0 °C to 18 °C, 28 °C to 55 °C)
Input characteristics
Bandwidth (voltage mode)
> 500 kHz
Bandwidth (thermocouple mode)
4.0 Hz
Overvoltage protection1
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)
Input impedance
> 1 GΩ
Input bias current
±2.5 nA max
Input offset current
±1.5 nA max
Gain drift
60 ppm/°C max
Offset drift
1 μV/°C max
Filter cutoff frequency (–3 dB)
(thermocouple mode)
4.0 Hz
Filter type (thermocouple mode)
Low Pass RC Filter
Other features
Recommended warm up time
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 TCn– pin. Voltage sources greater than ±100 mV should be tied to TCn+ and
GND (floating source), or TC
n+ and TCn+1+ (grounded source), and have the channels set for bypass mode.


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