Operating Your Instrument
2
Keysight 53147A/148A/149A Operating and Programming Guide
81
The Counter automatically displays the measured frequency of the input
signal. To set the resolution, measurement rate, and/or the number of
averages, see the appropriate procedure in the section titled
, or refer to
, and
“Setting the Number of Averages”
later in this chapter.
4 To measure the frequency of a signal applied to the Channel 1 input, press
the Chan Select key.
CHANNEL 1
is displayed momentarily, and the
Ch 1
and
Freq
annunciators are
activated. If a signal is presently applied to the Channel 1 input, the measured
frequency is then displayed. If no signal is applied,
CH1 NO SIGNAL
is
displayed until an input signal is connected to the Channel 1 input connector.
CAUTION
The Channel 2 input path circuits contain sensitive GaAs semiconductors. To
prevent damage to these components, always adhere to standard ESD
(ElectroStatic Discharge) prevention procedures, and ensure that the
maximum power specification for this channel (+27 dBm) is not exceeded.
COUNTER
CHANNEL 2
50MHz to 26.5 GHz
50
Ω
DAMAGE
+27 dBm
NOTE
When the frequency of a signal applied to the Channel 2 input exceeds the
maximum rated frequency for the Counter, the Counter displays CH2 TOO HIGH.
C
Gate
Chan
Select
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