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U2352A Datasheet(PDF) 17 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) 17 Page - Keysight Technologies

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17
Thermocouple input mode
In thermocouple input mode, the
U2802A can acquire up to ±100 mV
input signals. Each channel includes
an instrumentation amplifier and a
4 Hz low-pass filter. The low-pass
filter removes unwanted noise from
the thermocouple wires to obtain
accurate measurement data.
Voltage input mode
Alternatively, you can select separate
voltage input modes for each channel.
The channel will be set to bypass
the amplifier and filter, allowing up
to ±10V input signals to be directly
routed to the DAQ device analog
input. The bandwidth in this mode is
more than 500 kHz.
Zero mode
In zero mode, the positive and nega-
tive inputs of the instrumentation
amplifier are shorted together. The
voltage measured in this mode
corresponds to the offset voltage
of the channel. You can subtract
this offset voltage from subsequent
thermocouple mode measurements to
increase measurement accuracy. This
mode is only applicable in thermo-
couple mode.
Thermocouple compatibility
The U2802A is compatible with a
wide range of standard thermo-
couple types defined in the NIST
ITS-90 Thermocouple Database.
This includes types J, K, R, S, T, N,
E, and B.
Open thermocouple
detection
The U2802A includes open ther-
mocouple detection circuitry to
indicate the presence of an open
thermocouple.
Calibration EEPROM
The U2802A gain and offset calibra-
tion factors for each channel are
stored in the EEPROM during fac-
tory calibration and can be retrieved
prior to taking measurements. This
on-board EEPROM also stores the
module ID, serial number, and date of
calibration for your reference. A sec-
tion of the EEPROM is also allocated
for you to save your calibration data.
Restoring factory calibration
Using the AMM software, you can
easily restore the U2802A calibration
data from your settings to the original
factory settings.
17


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