Am Envelope Display Measurement - HP 8920A Application Handbook

AM Envelope Display Measurement

Description
This procedure is used to measure an AM Transmitter's AM envelope.
In order to display the envelope on the Oscilloscope, the SSB
demodulator is used to down convert the incoming RF signal to an IF
frequency of 20 Hz.
TX TEST
RF IN/OUT
POWER
OFF ON
MAX POWER 60 W
!
CONTINUOUS
50Ω COXIAL
CABLE
ANTENNA
(RF OUT)
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3 Knob
SCREEN CONTROL
MSSG HELP CONFIG
RX TX DUPLEX
USER DATA FUNCTIONS
k1'
REF SET
INCR
k1
: 10
k2' LO LIMIT
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
AM 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 LIM IT
dB
GHz
4 5 6
dBm
%
MHz
1 2 3
V
s
kHz
+ _
0
mV
Ω
YES NO ms
ppm % Hz
ON/OFF
µV
W dBµV
ME MORY
CARD
SQUELCH AUDIO OUT AUDIO IN
HI LO
MAX MAX
! !
12 v Pk 42 v Pk
SHEILDED
ADUIO CABLE
MICROPHONE
(AUDIO INPUT)
2
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