HP 8901B Operation And Calibration Manual page 372

Model 8901B
Characteristic
RF POWER
Input SWR
Performance Tests
Performance Limits Conditions
<1.15 using HP 11 722A Sensor Module
Performance Test 9
(SLaP
14)
SWR TEST
Specification
D E V I C E
INPUT
RF
REFLECTED
RF
OUTPUT
SPECTRUM ANALYZER
'
Description
Input
SWR is
determined
by
measuring return
Loss.
Measurements
are
made
at
the input of
a
power sensor
or sensor module connected
to
the Modulation Analyzer. The sensor input is driven by a signal generator
through an SWR bridge. The reflected power is measured by a spectrum analyzer. A reference line is first
established by disconnecting the output of the SWR bridge to create
a
high-reflection, open circuit.
RF
INPUT
6 dB ATTENUATOR
SWR
BRIDQE
Equipment
Attenuator, 6
dB
.......................................................
HP 8491A Option
006
RF'
Spectrum Analyzer
......................................................
HP
8559AL182T
Sensor Module
..................................................................
HP 11722A
S i g n a l
Generator.,
.....................................................
H P 8640B Option 002
SWR
Bridge.
................................................................
Wiltron 60NF50
HP 89018
MODULATION ANALYZER
-
SENSOR
Lo
0
I
I
I
SIQNAL QENERATOR
I
I
RF
OUTPUT
I
I
Figure
4-7. S
WR
Performance Test Setup
rev.1 OJUL87
Performance Test
9 4-31