I
...
~-
.!.
'~
Model 436A
Adjustments
ADJUSTMENTS
5-18. SPIKE BALANCE ADJUSTMENT
(cont'd)
EQUIPMENT:
PROCEDURE:
RANGE
CALIBRATOR
POWER
METER
DDD©l~D
l
POWER
MET~R
SENSOR
-
Figure
5-3.
Spike
Balance
Adjustment
Setup
Range 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
100
µW
ON
(in)
3. Remove the Power Meter
top
cover and adjust
the
front-panel CAL ADJ control
so
that
the digital
readout
indicates 100.0
µW
4.
Press and hold
the
Power Meter SENSOR ZERO switch
and
adjust
BAL
poteni-
ometer A3R65 so
that
the
display
readout
indicates 60.0 ± 0.2 µW.
NOTE
The Power Meter sensor zero circuit
must
be
re-zeroed
as
described in
the
following
steps
before valid
power
measurements can be made.
5.
Set
the
Range Calibrator FUNCTION switch
to
standby. Then press the Power
Meter SENSOR ZERO switch
and
wait
for
the
digital
readout
to
stabilize.
6.
Release the Power Meter SENSOR ZERO switch
and
wait
for
the
ZERO lamp
to
go
out
.
5-5
To Next Page
Loading...
