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

FM CDCSS Coding and Deviation Measurements

POWER
OFF ON
50Ω COXIAL
CABLE
ANTENNA
(RF OUT)
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 DUPLEX OUT ANT IN
M AX POWER 60 W
!
!
M AX POWER 200 mW
CONTINUOUS
ATTENUATOR (OPTIONAL)
1
TRANSMITTER UNDER TEST
Knob Data Entry
Keys
SCREEN CONTROL
MSSG HELP CONFIG HOLD PRINT ADRS
RX TX DUPLEX PREV TESTS LOCAL
USER DATA FUNCTIONS
k1' REF SET METER AVG
INCR INCR INCR X10
7
k1
: 10 SET
k2' LO LIM IT HI LIMIT
k2
4
k3'
CURSOR CONTROL
k3
ASSIGN 1
k4
RELEASE
0
PUSH TO SELECT
k5
YES
ON/OFF
SHIFT CANCEL
MIC/ACC VOLUME SQUELCH AUDIO OUT
!
12 v Pk
FM Transmitters
2
INSTRUMENT STATE
SAVE
MEAS
RECALL PRESET
RESET
DATA
8 9
ENTER
dB
GHz
5 6
dBm
%
MHz
2 3
V
s
+ _ kHz
mV
Ω
NO ms
ppm % Hz
µV
W dBµV
M EMORY
CARD
AUDIO IN
HI LO
M AX MAX
!
42 v Pk
67