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AM Receivers
143
AM AGC Measurement
Description
This procedure is used to measure an AM Receiver’s Automatic Gain
Control (AGC). A reference is established at 13 dB below full rated
audio output, and the Receiver’s output level and distortion are
measured with inputs varying from 500 mV to 5 Ω V.
DUPLEXTXRX PREV TESTS
CONFIGHELPMSSG HOLD PRINT
SCREEN CONTROL
LOCAL
ADRS
REC AL L
SAV E
MEAS
RESET
PRESET
INSTRUMENT STATE
DATA FUNCTIONS
INCR
: 10
REF SET
IN CR
SET
METER
INCR X10
AVG
LO LIMIT HI LIMIT
CURSOR CONTROL
PUSH TO SELECT
CAN CEL
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
MEMORY
CARD
AUDIO IN
LOHI
!
MAX
42 v Pk
!
MAX
12 v Pk
AUDIO OUTSQUELCHVOLUMEMIC/ACC
MA X POWER 200 mW
!
ANT INDUPLEX OUTRF IN/OUT
!
MA X POWER 60 W
CONTINUOUS
POWER
OFF ON
1
2
Data Entry
RX TEST
50Ω COXIAL
CABLE
TEST LOAD
RECEIVER UNDER TEST
ANTENNA (RF INPUT)
SPEAKER
(AUDIO
INPUT)
3
+
GND
Knob
Keys