HP 8340B Manual page 311

5-16.
LEVELED RF OUTPUT ADJUSTMENTS (Cont'd)
44. On the DUT, press [START FREQ] and enter [1] [3] [.] [5] [GHz]. Press [STOP FREQ]
and enter
[2] [0] [GHz].
Press
[POWER LEVEL]
and using the front panel rotary knob, adjust for maximum
leveled power. Press
[MANUAL]
and enter
[1] [3] [.] [5] [GHz].
45. Using the step keys as described
in
step
41,
step through Band
3.
If
squegging occurs, adjust
A24R8
(X3C)
slightly CCW
to eliminate the squegging.
NOTE
Test for squegging at power levels from maximum leveled power to —20
dBm
in 5 dB increments.
46. On the DUT,
press [SHIFT] [PWR SWP] and enter the maximum ALC power level that
will be
a
5
dB increment below max leveled power
(i.e.,
10,5). Repeat step 45 at
this
power
level. Enter the
next
5 dB increment and repeat step 45
until
the test
for squegging has been performed from
maximum leveled
power
to —20 dBm. This completes Leveled
RF
Output Adjustments for an
HP
8341 B. If
testing
an
HP 8340B, continue
with
step 47.
Figure 5-60.
Squegging
Displayed
on
Spectrum Analyzer
47. For Band 4, press the LO [START FREQ]
and
enter [1] [9] [.] [4]
[GHz].
Press [STOP FREQ] and
enter
[2] [5] [.] [9] [GHz]. Press [MANUAL]
and enter
[1] [9] [.] [4] [GHz].
48. Press the DUT's
[START PREQ]
and
enter
[2] [0] [GHz]. Press [STOP FREQ] and enter [2] [6]
[.]
[5] [GHz].
Press
[CONT]
and [POWER
LEVEL].
Adjust the
DUT
front panel rotary knob for
maximum leveled power. Press
[MANUAL]
and
enter [2] [0]
[GHz].
HP 8340B/41B
Adjustments