Racal Instruments 3152, User Manual

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SCPI Command Reference 4-14
The following is a complete listing of all common commands and
queries which are used in the Model 3152.
*CLS - Clear the Status Byte summary register and all event
registers.
*ESE <enable_value> - Enable bits in the Standard Event enable
register. The selected bits are then reported to the status byte.
*ESE? - Query the Standard Event enable register. The
synthesizer returns a decimal value which corresponds to the
binary-weighted sum of all bits set in the register.
*ESR? - Query the Standard Event register. The synthesizer
returns a decimal value which corresponds to the binary-weighted
sum of all bits set in the register.
*IDN? - Query the synthesizer’s identity. The returned data is
organized into four fields, separated by commas. The synthesizer
responds with its manufacturer and model number in the first two
fields, and may also report its serial number and options in fields
three and four. If the latter information is not available, the device
must return an ASCII 0 for each. For example, Model 3152’s
response to *IDN? is:
RACAL INSTRUMENTS,3152,0,1.0.
*OPC - Set the "operation complete" bit (bit 0) in the Standard
Event register after the previous commands have been executed.
*OPC? - Returns "1" to the output buffer after all the previous
commands have been executed. *OPC? is used for
synchronization between a controller and the instrument using the
MAV bit in the Status Byte or a read of the Output Queue. The
*OPC? query does not affect the OPC Event bit in the Standard
Event Status Register (ESR). Reading the response to the *OPC?
query has the advantage of removing the complication of dealing
with service requests and multiple polls to the instrument.
However, both the system bus and the controller handshake are in
a temporary hold-off state while the controller is waiting to read the
*OPC? query response.
*OPT? - Returns the value “0” for Model 3152 with 64K memory.
Returns “1” for Model 3152 with 256K memory or with 512K
memory.
*RST - Resets the synthesizer to its default state. Default values
are listed in Table 4-1.
*SRE <enable_value> - Enables bits in the Status Byte enable
register.