Agilent Technologies 34901A User Manual page 149

Chapter 4 Features and Functions
System-Related Operations
Firmware Revision Query
The instrument has three microprocessors for control of various internal
systems. Each plug-in module also has its own on-board microprocessor.
You can query the instrument and each module to determine which
revision of firmware is installed for each microprocessor.
• The instrument returns three revision numbers. The first number
is the firmware revision number for the measurement processor;
the second is the input/output processor; and the third is the
front-panel display processor. For each plug-in module, the
instrument returns one revision number for the on-board processor.
• Front-Panel Operation:
Turn the knob to read the firmware revision number for the module
installed in each of the three slots. If a slot does not contain a module,
EMPTY SLOT is displayed.
• Remote Interface Operation: Use the following command to read the
system firmware revision numbers (be sure to dimension a string
variable with at least 40 characters).
*IDN?
The above command returns a string in the form:
HEWLETT-PACKARD,34970A,0,X.X-Y.Y-Z.Z
Use the following command to read the firmware revision number of
the module in the specified slot (be sure to dimension a string
variable with at least 30 characters).
SYSTem:CTYPe? {100|200|300}
This command returns a string in the form:
HEWLETT-PACKARD,34901A,0,X.X
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REV X.X-Y.Y-Z.Z