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Chapter 1 Getting Started
The Display Annunciators at a Glance
Operating Guide 1-5
1
The Display Annunciators at a Glance
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
Offset
The displayed frequency value is offset by a previously entered frequency value.
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
Offset
The displayed power value is offset by a previously entered power value.
dB, dBm, W,
mW,
µW, %
Indicates the unit of measurement for the currently displayed power value.
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).
Ch 12
Rel Freq
Offset
Avg On
Rel Pwr
Offset
dB
dBm
Watts
mW
uW
%
Ext Rel
Error
Shift
Hold
Rate Rmt SRQ
GHz
MHz
kHz
Hz