JDS Uniphase SB Series User Manual page 34

XDRS? Drivers
Returns the states of all drivers in a binary-coded integer.
LRN? Learn
Returns a string containing three commands that, if sent, reset the switch to its current state,
for example, CLOSE i;XDRS k;SRE l, where i represents the current path number, k
represents the states of the external drivers, and l represents the value of the service request
enable register.
STB? Status Register
Returns a three-digit integer and automatically clears the status register if the SRQ bit is set.
SRE? SRQ Mask
Returns the contents of the SRQ mask register.
CNB? Condition Register
Returns the contents of the condition register.
TST? Self-Test
Executes a self-test operation. An error code that can be queried with ERR? or LERR? is
placed in an error queue. The query TST? also sets bit 7 in the status register.
•
0 = self-test passed
•
1 = self-test failed
ERR? Error Number
Returns an error number if the self-test fails.
•
330 = self-test failed
•
0 = self-test did not fail
LERR? Last Number Error
Returns a three-digit error number from the error queue. The queue can contain as many as
five error numbers. The first error read is the last error that occurred. LERR? returns 000 if the
error queue is empty.
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Programming Guide – 28