HP 436A - Power Supply Adjustments

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<.
Model 436A
Adjustments
ADJUSTMENTS
5-22.
POWER
REFERENCE
OSCILLATOR
LEVEL ADJUSTMENT
{cont'd)
Substitute
-(V
1
-
V
0
)
2
for
V
0
2
-
V
1
2
(see Math Assumptions under Accuracy)
Then
0
= (V
1 -
Vo
)
2
-
2V
C.OMP
(V,
-
Vo)
+ K
or
v,
-Vo=
v
COMP
-J
(V
COMP)
2
-K
5-23.
POWER
SUPPL
y
ADJUSTMENrst
REFERENCE:
DESCRIPTION:
EQUIPMENT:
PROCEDURE:
See Service Sheet
15.
While
the
Power Meter
is
measuring an equivalent
10
mW
signal from
the
11683A
Range Calibrator,
the
+15V supply is adjusted for a Power Meter indication
of
9.99
mW
to
10.01
mW.
Then
the
range
to
range accuracy
is
checked (performance
test
4-11). Finally,
if
all ranges are within limits,
the
+15V
and
-15V
supplies
are measured with a digital voltmeter.
Digital Voltmeter (DVM) . HP
3456A
Calibrator. . . . . . . . . .
HP
11683A
1.
Set
the
Power Meter switches
as
follows:
CAL
FACTOR
% .
POWER
REF
.
MODE
....
RANGE HOLD
LINE
....
100
off
(out)
WATT
off
(out)
ON
(in)
2.
Set
the
Range Calibrator switches
as
follows:
FUNCTION.
POLARITY.
RANGE
LINE
...
CALIBRATE
NORMAL
lmW
ON
(in)
3. Connect
the
Power Meter
to
the Range Calibrator.
4. Zero
the
Power Meter:
a.
b.
c.
d.
e.
Set
the
Range Calibrator FUNCTION
switch
to
STANDBY.
Press
and
hold
the
Power Meter
SENSOR ZERO
switch and
wait for the
digital
readout
to
stabilize.
Release
the
Power Meter
SENSOR ZERO switch; wait for
the
ZERO
lamp
to
go
out
before proceeding.
Set
the Range Calibrator FUNCTION
switch to CALIBRATE.
Adjust CAL
ADJ
for
1.00
mW.
tRefer
to Section
VII,
Manual
Changes, for
backdating
information.
5-13