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Chapter 2 Operating Your Frequency Counter
Measuring Frequency
2-12 Operating Guide
2
Measuring Frequency
1 Connect the Counter to a power source, and set the
Main ~ Power switch on the back panel to 1 (on).
If the Counter is connected to an AC power source, the Main AC Power
indicator on the back panel and the Standby indicator on the front panel
light. If the Counter is connected to an external DC power source or is
operated from internal batteries (with Battery option only), the Standby
indicator lights, but the Main AC Power indicator does not.
2Press the POWER button on the front panel.
The Standby indicator goes off, and all segments of the front-panel display
are temporarily activated. TESTING is displayed while the Counter
performs its power-on self-test. If the Counter passes all of the tests,
SELF TEST OK is displayed, and the Counter then displays its model
number, firmware version number, GPIB address, and CH2 NO SIGNAL.
The Counter is now ready to measure the frequency of a signal applied to
the Channel 2 input. Note that the Ch 2 and Freq annunciators are activated.
3 Connect an input signal to Channel 2.
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.
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 “Operating
the Counter,” or refer to “Setting the Resolution,” “Setting the
Measurement Rate,” and “Setting the Number of Averages,” later in this
chapter.
Main ~ Power
POWER
Standby
CHANNEL 2
50 MHz to 20 GHz
DAMAGE
+27 dBm
50!Ω