
12. Noise Sidebands Test
SPECTRUM ANALYZER
(SOURCE)
ADAPTER
ADAPTER
L
CAUE
AssElluv
Figure 2-22. Noise Sidebands Test Setup
Equipment
Spectrum Analyzer
(1ST
LO OUTPUT)
...................
HP
8566A/B
Adapter, Type N (m) to SMA (f) (2 required)
..............
.1250-1250
Adapter, Type N (f) to BNC (m)
............................
1250-0077
Cable Assembly, SMA Male Connectors
...................
.5061-1086
Procedure
1. Allow both analyzers to warm up for at least one-half hour with
LINE switch in either the STANDBY or ON position.
2. On one of the analyzers, connect the CAL OUTPUT to the RF
INPUT. Press
(2)
then
LRECALL)
@
and adjust FREQ ZERO
control for maximum signal amplitude. Repeat this frequency
calibration on the other analyzer. When completed, press
(21
again on each of the analyzers.
3. Connect
1ST
LO OUTPUT of source analyzer to RF INPUT of
analyzer under test as shown in Figure 2-22.
Note
Do not connect the frequency reference (on the rear panel) of the
analyzers to a common frequency reference.
4. Key in the following on the source analyzer:
(CENTER FREQUENCY) . . . . . . . . . . . . . . . . . . . .
(FREQUENCY SPAN) . . . . . . . . . . . . .
SHIFT MKR
+
REF LVL
(Display diagnostics
[SHIFT]
lREsBW_)P
(YTO Pretest Mode)
SWEEP
(SINGLE]
.
.
.
.
5.7
GHz
. . . . . . . . . . . . . . . .
OHz
for convenience)
The first line of the diagnostic display and the CENTER readout
should both now indicate 5.700 000 000
GHz.
This is the
1ST
LO
OUTPUT frequency.
2-50
Performance Tests
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