HP 8340B Manual page 282

5-14.
UNLEVELED RF
OUTPUT ADJUSTMENTS (Cont'd)
48. Access Cal Constant
8 by pressing [SHIFT]
[GHz] [8] [Hz] [SHIFT] [ENTRY OFF]
on the OUT.
Using the DUT's
rotary knob, adjust Cal Constant 8
(range
is 0
to 131) for optimum power across
Band 4.
49. Press
[RECALL]
on the
DUT
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
=s
1 dB below the slow sweep
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 46 through 49.
Proceed with step
51.
50. Perform steps 45 and 46.
Band
2 Delay Compensation, HP 8340B
and 8341
B
51.
Press the following key sequence on the DUT:
[CONT] (If
not already
in
continuous
sweep mode)
[START FREQ] [6] [.] [9] [GHz]
[STOP FREQ] [1] [3]
[.] [5]
[GHz]
[SWEEPTIME] [2] [0] [0] [msec] (500
mS
if the DUT is an HP 8341 B Option
003)
[SAVE] [1]
[SWEEPTIME] [AUTO]
[SAVE] [2]
[SINGLE]
[SAVE] [3]
[RECALL] [2]
Adjust the scope's vertical position and/or sensitivity
to view the swept display.
52. Access Cal Constant
6
by pressing
[SHIFT] [GHz] [6] [Hz] [SHIFT] [ENTRY OFF]
on
the DUT.
Using the
DUT's
rotary knob, adjust Cal
Constant
6
(range
is 0
to 131) to optimize the power
across the entire Band.
53. Press
[RECALL]
on the
DUT
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
s
1 dB below the slow sweep
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 Band 2.
If
either of the
above conditions are not met, repeat steps
52
and 54.
54. Iterate between registers
1
and
3
and verify that the single
sweep
trace (register 3)
is no
more than
1 db below
the slow sweep trace at any point. After pressing
[3]
on the
DUT
you
need to press
[SINGLE]
to initiate the single sweep.
Also,
the minimum power point on
the single
sweep trace
should be
>
1 dB above the maximum leveled power specifications for Band
2.
If
either of the
above conditions are not met, repeat steps 52 through 54.
HP 8340B/41B
Adjustments
5-83