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SSB Receivers
174
SSB Audio Output Power and Distortion Measurement
Description
This procedure is used to measure an SSB Receiver’s audio output
power and distortion into a Test Load. Output power is displayed (in
various measurement units, including watts) on the Test Set screen.
Distortion is measured and displayed at one-half the rated audio output.
Reference is IEC 489-5, paragraph 3.1.2.
DUPLEXTXRX PREV TESTS
CO NFIGHELPMSSG HOLD PRINT
SCREEN CONTROL
LOCAL
ADRS
REC ALL
SAVE
MEAS
RES ET
PRESET
INSTRUMENT STATE
DATA FUNCTIONS
INCR
: 10
REF SET
INCR
SET
METER
INCR X10
AVG
LO LIMIT HI LIMIT
CURSOR CONTROL
PUSH TO SELECT
CA NCEL
SHIFT
k1
k1’
k2
k2’
k3
k3’
k4
ASSIGN
k5
RELEASE
USER DATA
789
456
123
0
+
_
ENTER
GHz
dBm
dB
MHz
V
%
kH z
mV
s
Hz
µV
ms
%
dBµV
Ω
ppm
W
NO
ON/OFF
YES
MEMORY
CAR D
AUDIO IN
LOHI
!
MAX
42 v Pk
!
MAX
12 v P k
AUDIO OUTSQUELCHVO LUMEMIC/ACC
MAX PO WER 200 mW
!
ANT INDUPLEX OUTRF IN/OUT
!
MA X POWER 60 W
CONTINUOUS
POWER
OFF O N
1
2
Data Entry
RX TEST
50Ω COXIAL
CABLE
TEST LOAD
SSB RECEIVER UNDER TEST
ANTENNA (RF INPUT)
SPEAKER
(AUDIO
INPUT)
3
+
GND
Knob
Keys