Model
8642A/B
EQUIPMENT:
PROCEDURE:
Performance
Tests
PERFORMANCE
TESTS
Measuring Receiver
........................
HP
8902A
Sensor Module
..............................
HP
ll722A
SWR Bridge
.................................
Wilt
ron
60NFSO
Type N Short
..................
. . . . . . . . . . .
..
HP
11
51
2A
Signal
Generator
...........................
HP
8642B
1.
High Level SWR Setup
Set
up
the
measuring receiver
as
follows:
INSTR UMENT PRESET
MEASUREMENT MODE:
DISPLA
Y MODE:
Set
up
the
Signal
Generator
as
follows:
INSTRUMENT PRESET
Set
up
the
HP
8642 as follows:
INSTRUMENT PRESET
AMPLITUDE INCREMENT
RF
POWER
LOG
0.1
dB
2a. Calibration
Connect
the
instruments as shown
in
Figure
4-
8 step 2a. Set
the
HP
8642
and
the
Signal
Generator
to
the
frequency listed in
the
table
below. Set
the
Signal
Generator
level
to
-80
dBm. Set
the
HP
8642
level listed
in
the
table below.
Make
a reading
on
the
measuring
receiver
and
record
it
in
the
table below (Step 2a Reading). Repeat
this step for all frequencies
in
the
table.
lb.
Connect
the
instruments as shown
in
Figure
4-
8 step
2b.
Set
the
Signal
Generator
level for 6
dB
higher
than
the
HP
8642
level. Make
a reading
of
the
signal level on
the
measuring receiver. Record this
reading in
the
table below (Step 2b Reading). Repeat
this
step for all
frequencies
and
levels in
the
table below.
2c. Now compute the
Sig
Gen
Level setting
to
be used
in
the SWR
Measurement for each frequency
in
the
table.
Sig
Gen
Level = (Step 2a Reading) - (Step 2b Reading) + 6 + (HP 8642 level)
4-31
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