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TEST OSCILLATOR
AC VOLTMETER
OSCILLATOR
ELECTRONIC COUNTER
hp55324
@
204C
1589
Figure 5-4 .
Sync Input Check
Rotate the Test Oscillator dial above and below 20 kHz while watching the
indication on the AC Voltmeter .
When the needle starts to dip (indicating
loss of sync ) ,
note the frequency indication on the Frequency Counter .
The AC Voltmeter should dip at less than 18. 6 kHz and greater than 21.4
kHz,
indicating a sync range of + 7% at 5V rms .
5-13 .
BALANCE CHECK.
Connect the Model 204C with a 600 ohm load to the AC Voltmeter .
Set controls as follows :
Model 204C :
C.
Adjust Model 204C AMPLITUDE for a meter indication of OdB .
Remove the 600 ohm load and connect the equipment as shown in Figure 5-5 .
Meter indication should be greater than 40 dB down from OdB reference .
Connect the Model 204C to the Wave Analyzer input and set the AMPLI
TUDE to maximum ,
and frequency to 100 kHz .
5-7
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