Programming Guide – 179
Operation Complete Query
Syntax *OPC?
Function Places “1” in the output queue of the source optics module when all pending
operations have been completed. The value 1 is not always placed in the output
queue immediately; therefore, the status byte register must be polled and the MAV
bit checked to determine if there is a message available in the output queue.
Example *OPC?
Option Identification Query
Syntax *OPT?
Function Reports on options installed or included with the source optics module
Example *OPT? returns ??? in all cases.
Reset Command
Syntax *RST
Function Restores the source optics module to the default setting
Example *RST
Service Request Enable Command
Syntax
*SRE<space><numeric value> where 0 ≤ <numeric value> ≤ 255
Function Sets the bits in the service request enable register. The numeric value is rounded
to the nearest integer and converted to a binary number. The bits of the register
are set to match the bit values of the binary number.
Example *SRE 216 sets the service request enable register bits to 11011000.
Service Request Enable Query
Syntax *SRE?
Function Returns the contents of the service request enable register as an integer that,
when converted to a binary number, represents the bit values of the register
Example *SRE? returns 195 if the service request enable register is set to 11000011.
Read Status Byte Query
Syntax *STB?
Function Returns the contents of the status byte register as an integer that, when converted
to a binary number, represents the bit values of the register. The bit value for bit 6
of the register is the MSS bit value, not the RQS bit value.
Example *STB? returns 170 if the status byte register is set to 10101010.
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