Agilent Technologies 53151A manual The Display Annunciators at a Glance, Getting Started, Rel Freq

Chapter 1 Getting Started

The Display Annunciators at a Glance

The Display Annunciators at a Glance

GHz	MHz	kHz	Hz
Ch 12
Rel Freq
Offset	dB		Ext Rel	Hold
Avg On
	dBm		Rate Rmt SRQ
Rel Pwr	Watts
	mW		Error
Offset	uW		Shift
	%

Annunciator	Description
Ch 1 or Ch 2	Indicates which channel is selected to measure an input signal.
Freq	Indicates that the value displayed is a frequency reading.
Rel Freq	The displayed frequency value is relative to a previously zeroed value.
Freq	The displayed frequency value is offset by a previously entered frequency value.
Offset
Avg On	The displayed frequency value is the result of a number of individual frequency
	measurements that have been averaged.
Pwr	The Counter is set to measure Power (Channel 2 only).
Rel Pwr	The displayed power measurement is relative to a previously zeroed power value.
Pwr	The displayed power value is offset by a previously entered power value.
Offset
dB, dBm, W,	Indicates the unit of measurement for the currently displayed power value.
mW, ∝W, %
	Provides a real-time analog representation of the Power measurement (intended for
	peaking and similar procedures).
Ext Ref	The Counter is using an external reference signal for frequency measurements.
Hold	Indicates the Counter is in Hold (single-measurement) mode.
Rmt, SRQ	Shows the current state of the GPIB interface
	(Rmt = Remote operation via GPIB; SRQ = Service ReQuest).
Error	Indicates that a front-panel key command is unacceptable in the current context.
Shift	Indicates that all front-panel keys are redefined to the function printed above the key.
	Shows the amount of charge in the batteries (if the Battery option is installed).

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Operating Guide 1-5