HP 8562E, Service Manual

Page: 69 / 482

4. IF Amplitude Adjustments
18. Note the AMKR amplitude. Ideally, it should read 50.00 fO.l
19. If the AMKR amplitude is less than 49.9 rotate 15 one-half turn
counterclockwise for each 0.1 below 50.00 If the AMKR amplitude is greater than
50.1 rotate 15 one-half turn clockwise for each 0.1 above
50.00 Do not adjust more than five turns before continuing with the next
step.
20. Press IF STATE on the spectrum analyzer. Note the AMKR amplitude
reading.
21. Repeat steps 11 through 20 until the AMKR amplitude reading is 50.00 fO.l
22. On the spectrum analyzer, disconnect W29 from Connect the test cable between
and the 50 output of the HP 3335A.
23. Set the spectrum analyzer reference level to -10
24. Set the HP 3335A to -5
25. Press and NORMAL on the spectrum analyzer.
26. The MARKER amplitude should read -10 f0.13 If the reading is outside of
this range, repeat steps 4 through 21.
27. On the spectrum analyzer, reconnect W29 to Press and set the controls as
follows:
Center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...300 MHz
Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference level
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10
Resolution bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
28. Connect a BNC cable between the HP 85633 CAL OUTPUT and INPUT
29. On the spectrum analyzer, press and ADJ .
30. Use the knob or step keys to adjust the REF LEVEL CAL setting until the MKR reads
-10.00 fO.l
31. On the spectrum analyzer, press STORE REF LVL .
Adjustment Procedures 2-29