Operation Of Frequency Counter - Kenwood FL-180 Instruction Manual

Operation'of frequency-counter-'"
1. Set the MODE switch
measured to the input terminal @ • The L E V E L MONITOR lamp @ will light
if the input signal is more than 100 mV, indicating that the F L - 1 8 0 is operating
* as a frequency counter. The frequency is indicated in " H z "
Note:
When the input frequency is more than 9 9 9 9 Hz, the O V E R F L O W lamp
flickers. In this case, the frequency on 10 kHz order is not indicated, for exam-
- pie, 13256 Hz is indicated as " 3 2 5 6 " .
2. Select the position of the R E F E R E N C E F R E Q U E N C Y switch on the rear panel to
set the reference time (time gate) for crystal control or A C power frequency syn-
chronization.
Fig. 6 shows the connections of the FL-1 8 0 and the oscillator.
Fig. 6 Connection of the FL-1 8 0 and the oscillator
® to F R E Q ' C O U N T E R and connect a signal to be
F L - 1 8 0
Oscillator
@
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