Agilent Technologies 75000 SERIES B - Manual (Page 59)

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Maximum Error Numbers/Messages in the Error Queue: The
queue holds a maximum of 30 error numbers/messages for each
switchbox. If the queue overflows, the last error number/message in
the queue is replaced by -350, "Too many errors". The least recent
error numbers/messages remain in the queue and the most recent are
discarded.
Example Reading the Error Queue:
SYST:ERR? Query the error queue
:CDEScription?
SYSTem:CDEScription? <number> returns the description of a selected
module (card) in a switchbox.
Parameters
Parameter Name Parameter Type Range of Values
<number> numeric 1 - 99
Comments
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Form C Switch Module Description: The SYSTem:CDEScription?
<number> command returns: "16 Channel General Purpose Relay"
Example Reading the Description of a Card#1 Module:
SYST:CDES? 1 Returns the description
:CTYPe?
SYSTem:CTYPe? <number> returns the module (card) type of a selected
module in a switchbox.
Parameters
Parameter Name Parameter Type Range of Values
<number> numeric 1 - 99
Comments
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Form C Switch Module Model Number: The SYSTem:CTYPe?
<number> command returns:
HEWLETT-PACKARD,E1364A,0,A.01.00
where the 0 after E1364A is the module serial number (always 0) and
A.01.00 is an example of the module revision code number.
Example Reading the Model Number of a Card#1 Module:
SYST:CTYP? 1 Return the model number
Chapter 5 Agilent E1364A Form C Switch Command Reference 57