Fm Spurious Response Attenuation Measurement - HP 8920A Application Handbook

FM Spurious Response Attenuation Measurement

POWER
OFF
50Ω
COX-
IAL
TO SIGNAL
1
GENERATOR'S
RF OUTPUT
Description
This procedure is used to measure an FM Receiver's spurious response
attenuation (the receiver's ability to prevent unwanted signals from
causing response in the audio output). A reference is established, and
high level modulated signals from 1 MHz to 1000 MHz (or as required)
are input to the Receiver while audio output response is measured. FM
reference is ANSI/EIA/TIA-204D.
RX TEST
RF IN/OUT DUPLEX OUT
ON
MAX POWER 60 W
! !
MAX POWER 200 mW
CONTINUOUS
COMBINER
1
RECEIVER UNDER TEST
ANTENNA (RF INPUT)
3 Knob
SCREEN CONTROL
MSSG HELP CONFIG HOLD
RX TX DUPLEX PREV
USER DATA FUNCTIONS
k1' REF SET METER AVG
INCR INCR INCR X10
k1
: 10 SET
k2' LO LIMIT HI LIMIT
k2
k3'
CURSOR CONTROL
k3
ASSIGN
k4
RELEASE
PUSH TO SELECT
k5
SHIFT CANCEL
MIC/ACC VOLUME SQUELCH
ANT IN
FM Receivers
Data Entry
Keys
INSTRUMENT STATE
PRINT ADRS SAVE
MEAS
TESTS LOCAL RECALL PRESET
RESET
DATA
7 8 9
ENTER
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
MEM ORY
CARD
AUDIO OUT AUDIO IN
HI LO
MAX MAX
! !
12 v Pk 42 v Pk
SHEILDED
ADUIO
CABLE
SPEAKER
(AUDIO
OUTPUT)
2
111