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10. Set the spectrum analyzer display units to volts and perform a peak search. Note the
marker indication with the test port open.
11. Connect a Type-N short to the directional bridge test port. Perform a peak search
with the test port shorted and note the marker indication. Remove the short.
Instrument (UUT)
9610A/AF REFERENCE SOURCE
96xx
HEAD INTERFACE
RF OUTPUT
SINE
MOD
CONTROL
SWEEP
UNITS
10V
PK
MAX
SETUP
RF
COMMON
CONNECT
96xx HEAD
ONLY
Figure 5-13. Equipment Connections - VSWR Test (75 Ω)
12. Compute the average of the values measured with the test port open and shorted.
Record this number as Z
13. Repeat steps 6 through 12 for the next test frequency at +7 dBm listed in Table 5-23,
setting the spectrum analyzer center frequency to the test frequency and recording
Z
for each test frequency.
Max
14. Reconnect the directional bridge test port to the UUT and set it to OPER .
15. Set the spectrum analyzer display to linear. Set the sweep time to 5 ms, single sweep.
16. Set the UUT frequency to 500 MHz, set the signal generator frequency to 500.00001
MHz, and set the spectrum analyzer center frequency to 500 MHz.
-
/
/
ABC
DEF
ALPHA
OPER
7
7
8
9
LOCK
LOCK
GHI
JKL
MNO
NEXT
4
5
6
CHAR
PQRS
TUV
WXYZ
1
2
3
STBY
.
0
-
ENTER
BKSP
EXP
SPACE
Spectrum Analyzer
75 to 50
Impedance
Matching Pad
75 Leveling
Head
Open
Short
for the test frequency of 500 MHz.
Max
Signal Generator
9610A/AF REFERENCE SOURCE
96xx
HEAD INTERFACE
RF OUTPUT
SINE
MOD
CONTROL
SWEEP
UNITS
10V
PK
MAX
SETUP
RF
COMMON
CONNECT
96xx HEAD
ONLY
Connect the Signal Generator
and Spectrum Ananlyzer
Frequency Reference Inputs
to the UUT Reference Output
RF Input
75 Leveling
Input Port
75 Directional Bridge
Test Port
Calibration
5
Performance Test
-
/
/
ABC
DEF
ALPHA
OPER
7
7
8
9
LOCK
LOCK
GHI
JKL
MNO
NEXT
4
5
6
CHAR
PQRS
TUV
WXYZ
1
2
3
STBY
.
0
-
ENTER
BKSP
EXP
SPACE
Head
ead227f.eps
5-49
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