Features and Functions 3
Keysight 34420A User’s Guide 107
Comma Separators
The meter can display readings on the front panel with or without a comma
separator. This feature is available only from the front panel. See “Menu Example
1” on page 45.
– The display format is stored in non-volatile memory, and does not change
when power has been off or after a remote interface reset. The comma
separator is enabled when the meter is shipped from the factory.
– Front-panel operation: change the state of the comma display under the
9: COMMA command in the SYStem menu.
Firmware Revision Query
The meter has three microprocessors for control of various internal systems. You
can query the meter to determine which revision of firmware is installed for each
microprocessor.
– The meter returns three numbers. The first number is the firmware revision
number for the measurement processor; the second is for the input/output
processor; and the third is for the front-panel processor.
– Front-panel operation: read the revisions under the 11: REVISION command in
the SYStem menu:
– Remote operation: use the following command to read the revision:
*IDN? returns “KEYSIGHT TECHNOLOGIES,34420A,0,X.X-X.X-X.X”
Be sure to dimension a string variable with at least 40 characters.
-0.824,153 V -0.824153 V
With comma separator
(factory setting)
Without comma separator
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