Technical data

SCPI Command Set
2400 Series Operation Manual, 33237 Revision A, May 2004 3-3
3.2.1 SCPI Command Format
SCPI requires adherence to a strict syntax structure. The typographic conventions employed in the
SCPI command tables, which follow, are summarized here.
Commands can be entered in upper or lowercase. Commands can be abbreviated. Letters noted in
upper case in the command structure are required if entering more than the required letters, enter
the entire command (e.g., if the command is INITiate, use either INIT or INITIATE, but INITI is invalid).
If a command is shown in square brackets, it is an implied command and can be omitted (The brack-
ets are not part of the command and should be omitted even if the command itself is entered). An
implied command is the default command among the commands available at its level. For example,
in the case of the command INITiate:[IMMediate], the immediate mode is the default mode. Entering
INIT has the same effect as entering INIT:IMM.
Some commands are events that cause something to happen at a particular time but do not create a
setting or value to be checked afterwards. Consequently, they have no query form.
3.2.1.1 Output Subsystem
SCPI commands are divided into the subsystems listed below. In some cases, the Source code may
contain additional sets of functions. All Source subsystem commands begin with [SOURce]. However,
[SOURce] is the default command; therefore it is not required to be entered. The following sub-
systems are used in the 2400:
3.2.2 Source Subsystem - CW Mode
Command Description
OUTPut[:STATe] ON|OFF|1|0
Turns the signal at the RF OUTPUT connector on and off
OUTPut[:STATe]?
Query the RF OUTPUT state.
Command Description
[SOURce]:FREQuency[:CW|:FIXed] d
HZ
| KHZ | MHZ | GHZ
Sets CW frequency to d
[SOURce]:FREQuency[:CW|:FIXed]?
Queries the current CW frequency
[SOURce]:MODE?
Queries the current operating mode of the instrument
[SOURce]:POWer:ATTenuation:AUTO
ON|OFF
Sets the Attenuator to Auto (ON) or Manual (OFF)