HP 8340B Manual page 271

5-14.
UNLEVELED
RF
OUTPUT ADJUSTMENTS (Cont'd)
Equipment
Oscilloscope
...................................................
HP 1741A
10:1 Divider Probe
............................................
HP 10004D
Digital Voltmeter (DVM)
.........................................
HP 3456A
Power Meter
...................................................
HP 436A
Power Sensor
.................................................
HP 8485A
Detector
.....................................................
HP 8473C
Adapters:
APC
3.5
(f)
to
APC 3.5 (f)
................................
HP P/N
5061-5311
(required if
DUT
is an
HP 8340B)
APC 3.5 (f)
-
Type
N
(m)
..............................
HP P/N 1250-1744
(required
if
DUT
is
an
HP
8341 B)
Dual
Banana to BNC (f)
................................
HP P/N 1251-2277
NOTE
The following adjustments
should be checked or adjusted before
mak¬
ing
the adjustments
in
this procedure:
Power Supplies, 20/30
Loop,
M/N
Loop, Pretune, and Sweep Time.
Procedure
1.
Place the
DUT
in the test
position and connect
the oscilloscope and detector as shown in
Figure
5-40. Connect the DVM
to the DUT's rear panel 0.5
V/GHz output BNC. Switch the DUT's
LINE
switch
ON
and allow the
equipment
to
warm
up for
one
half hour.
INITIAL SETTINGS
NOTE
Once these
initial settings
have been made,
it will be necessary
to com¬
plete this procedure and the Leveled RF Output
adjustments
2.
Access the
DUTs Calibration Constants by pressing the following key sequence:
[INSTR PRESET]
[SHIFT] [GHz] [2] [Hz]
[SHIFT]
[MHz] [1] [2] [Hz]
[SHIFT] [kHz] [2] [2] [Hz]
Preset Cal Constant number
2 to 100 by entering [1] [0]
[0] [Hz].
NOTE
After
initially
accessing the
Cal Constants, subsequent entry
into
the
Cal
Constant mode may be accomplished by
pressing; [SHIFT] [GHz]
[desired
Cal
Constant] [Hz] [SHIFT] [ENTRY OFF]. However, after
press¬
ing
[INSTR PRESET], the
full Cal Constant key sequence must be
entered (see above).
5-72
Adjustments
HP 8340B/41B