R Ad I O T Est I Ns Tr Um En T S; In Tr O D Uc T I On; Ch A Nn El A N Aly Z Er - Aeroflex 3900 Series Operation Manual

In t r o du ct i on
This chapter expl ains t he use of t he 3 900 S pec tr um A nalyzer, C hannel Ana lyzer, and Oscil loscope
Inst rument s. T his ch apter i s int ended f or users fa mi liar w ith the ge neral pr incipl es an d u se o f these
instr uments.
The Audi o An alyzer is an optio nal f eatur e ( 390X OP T055) an d is d escribed in
Dup lex Te st Opti ons

Ch a nn el A n aly z er

The Cha nnel A nalyzer is a n asynchr onous, swe pt a nalyzer that displa ys the spectr um of the RF
signal recei ve d by t he T est S et over a 5 MH z ba ndwi dth ce nter ed on the Rx fre quency. The sour ce
of the si gnal f or the Chan nel A nalyzer is t he r eceiver chain of the Test Set.
Ref er to A ppendi x B,
The Cha nnel A nalyzer shar es th e R F pa th f rom t he con nector to the recei ver. The ref ore the
Cha nnel Analyzer is depende nt o n the rece iver for connect or se lection , glo bal at tenu ation and
center f reque ncy (w ith in +/ - 2 .5 MH z of the rece ived cent er fre quency).
B as i c S et ti n g s
The f requ ency span of the d isplay must include t he R F Fr equency be ing examine d. T he Re fere nce
Level of t he di splay must be se t so that the RF signal level falls wit hin t he d isplay ar ea. Th e
Cha nnel Analyzer Ti le can be use d in minimized o r maximi ze d view .
Cha pte r 6

R ad i o T est I ns tr um en t s

.
390 0 Pl atfor m Sp ecificat ions
S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
f or t he C hannel Ana lyzer's o perat ing p aramet ers.
6-1
C hap ter 8, Analo g