Technical data

Chapter 3 3-27
Adjustments and Correction Constants
Cavity Oscillator Frequency Correction Constants (Test 54)
4. Press repeatedly. Watch the trace on each sweep and try to spot the target spur.
With the filter, the target spur will be one of two obvious spurs (see Figure 3-11).
Without the filter (not recommended), the target spur will be one of four or five less
distinct spurs as shown in Figure 3-12 and Figure 3-13. When the center frequency
increases to 2994.999 MHz, and you have not “selected” the target spur, the message
Cav Osc Cor FAIL will appear on the display.
Figure 3-11 Typical Display of Spurs with a Filter
Spur Search Procedure with a Filter
5. Press and the other softkeys as required to
observe and mark the target spur. The target spur will appear to the right of a second
spur, similar to Figure 3-11.
6. Rotate the front panel knob to position the marker on the spur and then press
.
7. Observe the analyzer for the results of this adjustment routine:
• If the analyzer displays Cav Osc Cor DONE, you have completed this procedure.
• If the analyzer does not display DONE, repeat this procedure.
• If the analyzer continues not to display DONE, refer to Chapter 7 , “Source
Troubleshooting.”
NEXT
EXECUTE TEST YES CONTINUE
SELECT