Error Messages 5
Keysight 34970A/34972A User’s Guide 241
305 Not able to perform requested operation
The requested operation is not valid for the specified channel. You may have
tried to a configure a channel for current measurements (valid only on channels
21 and 22 on the 34901A module). Or you may have tried to configure scaling on
a module that does not connect to the internal DMM.
306 Part of a 4-wire pair
For 4-wire resistance measurements, the instrument automatically pairs channel
n with channel n+10 (34901A) or n+8 (34902A) to provide the source and sense
connections. To change the configuration on the upper channel in a 4-wire pair,
you must first reconfigure the lower channel to a measurement function other
than 4-wire resistance.
307
Incorrectly configured ref channel
For thermocouple measurements using an external reference, the instrument
automatically reserves channel 01 on the multiplexer in the lowest slot as the
reference channel. Before configuring a thermocouple channel with an external
reference, you must configure the reference channel (channel 01) for a
thermistor or RTD measurement.
This error is also generated if you change the function on the reference channel
(channel 01) after selecting the external reference source on a thermocouple
channel.
308 Channel not able to perform requested operation
The channel is unable to perform the requested operation.
309
Incorrectly formatted channel list
The channel list is not formatted correctly. Examples of proper formats are
shown below.
(@321) - channel 21 on the module in slot 300.
(@221:222) - channels 21 through 22 on the module in slot 200.
(@121:122,222,321:322) - channels 21 and 22 on the module in slot 100,
channel 22 on the module in slot 200, and channels 21-22 on the module in slot
300.
401 Mass storage error: failed to create file
The file was not created on the USB drive.
402 Mass storage error: failed to open file
The file was not opened on the USB drive.
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