HP 8340B Manual page 188

5-14. UNLEVELED RF OUTPUT ADJUSTMENTS (Cont'd)
39. Press [RECALL]on the OUT and iterate between registers 1 and 2 by pressing [1] and then [2].
Verify that the fast sweep speed trace (register 2) is no more than
speed trace (register 1) at any point. Also, the minimum power point on the fast sweep speed trace
should be 1 dB above the maximum leveled power specifications for the Band. If either of the
>
above conditions are not met, repeat steps 36 through 40.
40. Iterate between registers 1 and 3 and press [SINGLE] (initiates the single sweep) after selecting
register 3. Verify that the single sweep trace (register 3) is no more than 1 db below the slow
sweep trace (register 1) at any point. Also, the minimum power point on the single sweep trace
should be> 1 dB above the maximum leveled power specifications for the Band. If either of the
above conditions are not met, repeat steps 36 through 40.
the OUT is an HP 8341 B, proceed to step 51.
If
Band 3 Delay Compensation, HP 8340B
41. Press the following key sequence on the OUT:
[CONT](If not already in continuous sweep mode)
[STARTFREQ] [1] [3]
[STOPFREQ] [2] [0] [GHz]
[SWEEPTIME] [ 2] [0] [0] [msec]
[SAVE][7]
[SWEEPTIME] [ AUTO]
[SAVE][8]
[SINGLE]
[SAVE][9]
[RECALL][8]
Adjust the scope's vertical position and/or sensitivity to view the swept display.
42. Access Cal Constant 7 by pressing [SHIFT] [ GHz] [7] [Hz] [SHIFT][ENTRYOFF] on the OUT.
43. Using the OUT's rotary knob, adjust Cal Constant 7 (range is 0 to 131) to optimize the power
across the entire Band. If Cal Constant 7 is unable to optimize (peak) the majority of Band 3 at the
same time (> 60% of the Band should peak at the same time), then proceed with step 44.
Otherwise, proceed with step 50.
44. On the OUT, press [1] [0] [0] [Hz] to return Cal Constant 7 to 100. Repeat steps 36 and 37.
45. Press [RECALL]on the OUT and iterate between registers 7 and 8 by pressing [7] and then [8].
Verify that the fast sweep speed trace (register 8) is no more than ~ 1 dB below the slow sweep
speed trace (register 7) at any point. Also, the minimum power point on the fast sweep speed
trace should be
>
the above conditions are not met, repeat steps 42 through 45.
46. Iterate between registers 7 and 9 and verify that the single sweep trace (register 9) is no more than
1 db below the slow sweep trace at any point. After pressing [9] on the OUT you need to press
[SINGLE]to initiate the single sweep. Also, the minimum power point on the single sweep trace
1 dB above the maximum leveled power specifications for Band 3. If either of the
should be
>
above conditions are not met, repeat steps 42 through 46.
47. Press [RECALL] [ 2] on the OUT (recalls the Band 4 fast sweep setup). Adjust the scope's vertical
position and/or sensitivity to view the swept display.
5-82 Adjustments
[3] [5] [GHz]
[.]
1 dB above the maximum leveled power specifications for Band 3. If either of
1 dB below the slow sweep
HP 8340B/41B