Fm Cdcss Coding And Deviation Measurements - HP 8920A Application Handbook

Rf communications test set
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FM CDCSS Coding and Deviation Measurements

Description
This procedure is used to analyze an FM Transmitter's Continuous
Digital Coded Squelch System (CDCSS) digital data stream and
frequency deviation. The data rate, binary data stream, and octal code
are all displayed on the Test Set screen.
AF ANALYZER
DECODER
RF IN/OUT
POWER
OFF
ON
M AX POWER 60 W
!
CONTINUOUS
50Ω COXIAL
CABLE
ANTENNA
(RF OUT)
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Knob
SCREEN CONTROL
MSSG
HELP
CONFIG
RX
TX
DUPLEX
USER
DATA FUNCTIONS
k1'
REF SET
INCR
k1
: 10
k2'
LO LIM IT
k2
k3'
CURSOR CONTROL
k3
ASSIGN
k4
RELEASE
PUSH TO SELECT
k5
SHIFT
CANCEL
MIC/ACC
VOLUME
DUPLEX OUT
ANT IN
!
M AX POWER 200 mW
ATTENUATOR (OPTIONAL)
1
TRANSMITTER UNDER TEST
FM Transmitters
Data Entry
Keys
INSTRUMENT STATE
HOLD
PRINT
ADRS
SAVE
MEAS
PREV
TESTS
LOCAL
RECALL
PRESET
RESET
DATA
METER
AVG
INCR
INCR X10
7
8
9
ENTER
SET
HI LIMIT
dB
GHz
4
5
6
dBm
%
MHz
1
2
3
V
s
+ _
kHz
0
mV
YES
NO
ms
ppm
%
Hz
ON/OFF
µV
W
dBµV
M EMORY
CARD
SQUELCH
AUDIO OUT
AUDIO IN
HI
LO
M AX
MAX
!
!
12 v Pk
42 v Pk
2
67

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