FM Receivers

111

FM Spurious Response Attenuation Measurement
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 require d)

are input to the Receiver while audio output response is measured. FM

reference is ANSI/EIA/TIA-204D.

DUPLEXTXRX PREV TESTS
CONFIGHELPMSSG HOLD PRINT
SCREEN CONTROL
LOCAL
ADRS
RECALL
SAVE
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
MEMORY
CARD
AUDIO IN LOHI
!MAX
42 v Pk
!MAX
12 v Pk
AUDIO OUTSQUELCHVOLUMEMIC/ACC
MAX POWER 200 mW
!
ANT INDUPLEX OUTRF IN/OUT
!MAX POWER 60 W
CONTINUOUS
POWER
OFF ON
1
2
Data Entry
RX TEST

50Ω

COX-

IAL

COMBINER

RECEIVER UNDER TEST
ANTENNA (RF INPUT)
SPEAKER

(AUDIO

OUTPUT)

SHEILDED

ADUIO

CABLE
3

TO SIGNAL

GENERATOR’S

RF OUTPUT

1
Knob Keys