HP Saw E4419B Calibrating the Power Meter, Calibration Procedure Using HP E-Series Power Sensors

Power Meter Operation

Zeroing and Calibrating the Power Meter

If you calibrate the sensor before zeroing it, the message changes to “Please Zero ChA” or “Please Zero ChB” depending on which channel the sensor is connected to.

The Zero/Cal Lockout facility can be enabled/disabled through either the System Inputs menu or the Zero Cal menu as follows:

Press System , More , More , Inputs

Must Cal

Off or

On.

Press ZerCalo , More , Must Cal

Off or

On.

	Calibrating the Power Meter
	Calibration sets the gain of the power meter using a 50 MHz 1 mW
	calibrator as a traceable power reference. The power meter’s POWER REF
	output or a suitable external reference is used as the signal source for
	calibration. An essential part of calibrating is setting the correct reference
	calibration factor for the power sensor you are using. The HP 8480 series
	power sensors require you to set the reference calibration factor. The
	HP E-series power sensors set the reference calibration factor
	automatically. During calibration the wait symbol is displayed. Offset,
	relative and duty cycle settings are ignored during calibration.
Note	During calibration the power meter automatically switches the
	power reference calibrator on (if it is not already on), then after
	calibration it switches it to the state it was in prior to the
	calibration.

Calibration Procedure Using HP E-Series Power Sensors

The following procedure describes how you calibrate the power meter with an HP E-series power sensor. Since the power meter automatically downloads the HP E-series power sensor’s calibration table there is no requirement to enter the reference calibration factor. The power meter identifies that an HP E-series power sensor is connected and will not allow you to select certain softkeys. The text on these softkeys appears grayed out.

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