Boonton 4540 Peak Power Meter User Manual Uživatelský manuál stáhnout pdf (Strana 151)

Boonton 4540 Series RF Power Meter

Remote Operation

5-17

CALibration[:INTernal]:AUTOcal

Description: Performs a multi-point sensor gain calibration of the selected sensor with the internal 50 MHz

calibrator. This procedure calibrates the sensor’s linearity at a number of points across its entire

dynamic range. The calibration source defaults to the instrument’s internal calibrator if not

specified.

Syntax: CALibration[1|2][:INTernal]:AUTOcal[?]

Returns: 0 if successful, 1 otherwise (using query form only)

Valid Modes: Peak and CW Power sensors only

CALibration[:INTernal]:FIXedcal

Description: Performs a calibration at a fixed frequency and level. Fixed-cal does not provide for automatic

control of the internal 50 MHz calibrator. The RF output level of the calibrator in use must be set

by the user. Fixed-cal assumes that a valid Zero has already been performed.

Syntax: CALibration[1|2][:INTernal]:FIXedcal[?]

Returns: 0 if successful, 1 otherwise (using query form only)

Valid Modes: CW Power sensors only

CALibration[:INTernal]:ZERO

Description: For a sensor that has been previously auto calibrated and has valid auto-cal status, performs a zero

offset null adjustment. The sensor does not need to be connected to any calibrator for zeroing –

the procedure is often performed in-system. However, this command will turn off the internal

calibrator prior to zeroing to avoid the need to perform this step explicitly.

Syntax: CALibration[1|2][:INTernal]:ZERO[?]

Returns: 0 if successful, 1 otherwise (using query form only)

Valid Modes: Any

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Boonton 4540 Peak Power Meter User Manual Uživatelský manuál Strana 151