Boonton 4540 Peak Power Meter User Manual - Manual (Page 172)

Boonton 4540 Series RF Power Meter
Remote Operation 5-38
5.6.10 OUTPut Subsystem
The OUTPut group of commands is used to control various outputs of the 4540. These outputs include the internal 50 MHz
calibrator, the multi IO port, and an external 1GHz RF calibration source (Boonton Model 2530). The internal 50 MHz
calibrator is primarily used to for automatic calibration of power sensors. Precise level continuous wave (CW) signals can
also be sourced by the internal calibrator. The multi IO port can be set for status, trigger, alarm or voltage output. An
optional external calibrator can be configured as a programmable pulse source, with options for modulation rate and duty
cycle. It can also be driven by an external pulse modulation source.
OUTPut:EXTernal:LEVel[:POWer]
Description: Set or return the power level for an external 1 GHz calibrator output signal.
Syntax: OUTPut:EXTernal:LEVel:POWer < numeric_value >
Argument: <numeric_value> = -50.0 to +20.0 dBm (0.1dB resolution)
Valid Modes: Any
OUTPut:EXTernal:MODUlation
Description: Set or return the output modulation state for the 1 GHz calibrator. If set to CW, a calibrated CW
signal will be generated. If set to PULSE, the output will be pulse modulated by the source
specified in the OUTPut:EXTernal:SOURce <INT, EXT> command. If EXT is selected, an
external pulse generator with TTL compatible output must be connected to the rear panel EXT
PULSE BNC connector. If no generator is connected, there will be no calibrator RF output. IF
INT is selected, the pulse modulation will be controlled by the Preset Group,
OUTPut:EXTernal:PULSe:PPERIOD, OUTPut:EXTernal:POLARrity and
OUTPut:EXTernal:PULSe:PDCYCle or by OUTPut:EXTernal:PULSe:PERWID, depending upon
the OUTPut:EXTernal:PULse:CTRL <PRESET, VAR> setting.
Syntax: OUTPut:EXTernal:MODUlation <character data>
Argument: <character data> = {CW, PULSE}
Valid Modes: Any
OUTPut:EXTernal:POLArity
Description: Set or return the polarity of the duty cycle in the preset pulse control mode of the external 1 GHz
calibrator. When set to POS, the argument is the percentage of time the pulse is on in each period.
When set to NEG, the argument is the percentage of time the pulse is off in each period. This
parameter has no effect in the variable pulse control mode or the external pulse source mode.
Syntax: OUTPut:EXTernal:POLArity <character data>
Argument: <character data> = {POS, NEG}
Valid Modes: Any