Chapter 2 147
Making Adjustments
24. Tracking Oscillator for Option 010
6. Set the microwave frequency counter controls as follows:
SAMPLE RATE ........................................... Midrange
10 Hz-500 MHz SWITCH ...........500 MHz - 26.5 GHz
500 MHz-26.5 GHz SWITCH .....500 MHz - 26.5 GHz
RESOLUTION ......................................................1 Hz
7. Connect the RF OUT 50 Ω connector to the microwave frequency
counter input as shown in Figure 2-36.
8. Wait for the microwave frequency counter to gate two or three times,
then record the microwave frequency counter reading below as the
peaked frequency.
Peaked Frequency: ______________MHz
9. On the analyzer, press
MAN TRK ADJUST, 4095, ENTER. Wait for the
microwave frequency counter to gate two or three times, then record
the microwave frequency counter reading below as the minimum
frequency.
Minimum Frequency: ______________MHz
10.On the analyzer, press
MAN TRK ADJUST, 0, ENTER. Wait for the
microwave frequency counter to gate two or three times, then record
the microwave frequency counter reading below as the maximum
frequency.
Maximum Frequency: ______________MHz
11.If the absolute value of the difference between either the minimum
or maximum frequency and the peaked frequency is less than 5 kHz,
proceed with the adjustment procedure below. If the differences are
greater than 5 kHz, no adjustment is necessary.
12.Disconnect the cable from the EXT REF IN connector, then replace
the rear-panel jumper.
Adjust the Tracking Oscillator
13.Remove the A3 RF Section assembly as described in Chapter 9 of
this manual. With A3 sitting on top of the A2 display assembly,
reconnect all cables from A3 to their respective jacks on A7, A9, A25,
and A10. Reconnect W40 to A3A15J8. Connect the 50 Ω termination
to the end of W42.
14.Connect the equipment as shown in Figure 2-37. The microwave
frequency counter provides the frequency reference for the analyzer.
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