4. Programming Interfaces
Giga-tronics 2400/2500 Microwave Synthesizer Series
120
Programming Manual, Part Number 34783, Rev A, July 2009
4.5 IEEE 488.2 Common Commands
Table 20 IEEE 488.2 Common Commands
Command
Name
Description
*CLS
Clear Status
Clears the event registers in all status groups. It also clears
the Event Status Register and the Error/Event Queue.
*ESE<ese> Standard Event Status
Enable
Sets the Standard Event Status Enable Register. A service
request is issued whenever the specified event has
occurred.
Range of <ese>: 0 – 255.
*ESE?
Standard Event Status
Enable
Returns the value of the Standard Event Status Enable
Register. The value returned is a decimal value representing
the current state of the Standard Event Status Enable
Register.
*ESR?
Standard Event Status
Register
Returns the value of the Standard Event Status Register. The
value returned is a decimal value representing the current
state of the Standard Event Status Register.
*IDN?
Identification
Returns the instrument identification.
*OPC
Operation Complete
Causes the Operation Complete bit (that is, Bit 0 of the
Standard Event Status Register) to be set to 1 when all
pending selected device operations have been finished. List
Mode only.
*OPC?
Operation Complete
Places an ASCII character 1 into the device’s output queue
when all pending selected device operations have been
finished. Unlike the *OPC command, the *OPC? query does
not affect the OPC Event bit in the Standard Event Status
Register (ESR).
*RST
Reset
Sets the device-specific functions to a known state that is
independent of the past-use history of the device. The
command does not reset any part of the status reporting
system.
*SRE<sre> Service Request Enable
Sets and enables the value of the Service Request Enable
Register. Range of <sre>: 0 to 255.
*SRE?
Service Request Enable
Returns the value set by the *SRE command for the Service
Request Enable Register.
*STB?
Read Status Byte
Returns the value of the current state of the Status Byte.
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