Filter
Top Products
PERFORMANCE TESTS
PERFORMANCE
TESTS
MODEL
8559A
4
-
14. NOISE SIDEBANDS
SPECIFICATION:
Noise sidebands are at least 70 dB below a CW signal, 30 kHz or more away from the signal with a 1 kHz
resolution bandwidth and full video filtering.
DESCRIPTION:
A stable 1.8
GHz CW signal is applied at a
-
20 dBm level to the spectrum analyzer and displayed on the CRT
The amplitudes of noise
-
associated sidebands and unwanted responses near the signal are measured.
SPECTRUM
ANALYZER
I
INPUT
50ll
ADAPTER
COMB
QENERATOR
P
ADAPTER
FIGURE
4-8.
NOISE SIDEBANDS TEST SETUP
EQUIPMENT:
........................................................ CombGenerator HP8406A
...............................
Adapter, Type N (m) to BNC
(f)
(2 required)
HP 1250
-
0780
PROCEDURE:
1.
Set equipment controls as follows:
Spectrum Analyzer:
..................................................
FREQUENCYBANDGHz .01-3
TUNING ................................................................ 1.8GHz
..........................................................
FREQSPAN/DIV lMHz
RESOLUTION BW
...............................................
30 kHz, uncoupled
INPUTATTEN
..............................................................
OdB
....................................................
REFERENCELEVEL -20dBm
REFLEVELFINE .............................................................. 0
Amplitudescale ........................................................ 10dB/DIV
........................................................
SWEEPTIME/DIV AUTO
.....................................................
SWEEPTRIGGER FREERUN
ALTIF
.....................................................................
OFF
SIG IDENT
.................................................................
OFF
BLCLIP
....................................................................
OFF
VIDEOFILTER
.............................................................
OFF