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:CTYPe? SYSTem:CTYPe? <number> returns the module (card) type of a selected
module in a switchbox.
Parameters
Parameter Name Parameter Type Range of Values Default Value
number
numeric 01 - 99 N/A
Comments Microwave Switch Module Model Number:
The
SYSTem:CTYPe? <number> command returns (for both modules):
HEWLETT-PACKARD,E1368A,0,A.01.00
Note: The 0 after the module number is the serial number of the module
(always 0). 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 Returns the model number.
:ERRor? SYSTem:ERRor? returns the error numbers and corresponding error
messages in the error queue of a switchbox. See Appendix C for a listing of
the switchbox error numbers and messages.
Comments • Error Numbers/Messages in the Error Queue: Errors generated
by a switchbox store an error number and corresponding error
message in the error queue. Each error message can be up to 255
characters long.
• Clearing the Error Queue: An error number/message is removed
from the queue each time the
SYSTem:ERRor? command is sent.
The errors are cleared first-in, first-out. When the queue is empty,
each following
SYSTem:ERRor? command returns 0, "No error".
To clear all error numbers/messages in the queue, execute the
*CLS
command.
• 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 oldest error
numbers/messages remain in the queue and the most recent are lost.
• *RST Condition: *RST does not clear the error queue.
Example Reading the Error Queue
SYST:ERR? Query the error queue, read and
print the numbers/message.
66 HP E1368A/69A/70A Command Reference Chapter 4