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SSB Transmitters
166
SSB Rated Output Power/Carrier Suppression Measurement
Description
This procedure is used to measure a SSB Transmitter’s rated output
power into 50 Ω. The transmitter is modulated with two separate audio
signals at different frequencies. The amplitude of each audio signal is
adjusted until the transmitted side-band signals are equal as displayed
on the spectrum analyzer screen. Once properly adjusted, the RF
Output power is measured. A reference is then established, and the
carrier suppression is measured by removing all audio to the
microphone input.
DUPLEXTXRX PREV TESTS
CONFIGHELPMSSG HOLD PRINT
SCREEN CONTROL
LOCAL
ADRS
RECALL
SAV E
MEAS
RESET
PRESET
INSTRUMENT STATE
DATA FUNCTIONS
INCR
: 10
REF SET
INCR
SET
METER
INCR X10
AVG
LO LIMIT HI LIMIT
CURSOR CONTROL
PUSH TO SELECT
CANCEL
SHIFT
k1
k1’
k2
k2’
k3
k3’
k4
ASSIGN
k5
RELEASE
USER DATA
789
456
123
0
+
_
ENTER
GHz
dBm
dB
MHz
V
%
kHz
mV
s
Hz
µV
ms
%
dBµV
Ω
ppm
W
NO
ON/OFF
YES
ME MORY
CARD
AUDIO IN
LOHI
!
MAX
42 v Pk
!
MAX
12 v Pk
AUDIO OUTSQUELCHVOLUMEMIC /ACC
MA X POWER 200 mW
!
ANT IN
DUPLEX OUTRF IN/OUT
!
MAX POWER 60 W
CONTINUOUS
POWER
OFF ON
1
2
Knob
TX TEST
50Ω COXIAL
CABLE
ATTENUATOR (OPTIONAL)
SSB TRANSMITTER UNDER TEST
ANTENNA
(RF OUTPUT)
MICROPHONE
(AUDIO INPUT)
SHEILDED
AUDIO CABLE
3
Keys
Data Entry
SPECTRUM ANALYZER