Sencore CB42 - Page 87

USING THE CB42 SPEED TeST seTUP BOOKLET
1
Thi~ boo~lel $llr •• ~ ~, • ready trouble,hooting "mirKIer f"r CB
".n=ive, telting u,ing the eB41 Automatic C8 Arl.I., ••. It
i. recommended !hal lhe more complete in.t'"ction, lound in
the CB42 Oper.'ionl, Application" and Ser.ice M.nu.1 be mod
until you ar. famm., Wilh <"",II lest
The key CB42 u"a are grouped into five chon,"": Gene,.1
Tem. AM Receiver Tests, sse Receive, Te,u, AM T,.mm;tler
Te,IS, and $Sa Transmitter Te1l •.
Thi. bool<lel cootain"
Key symptom/tlSt 0<"" ehoeek which 1;'11 typical "~nscej •• r
complainu and wtlioh ,,,,,cilie \e~" 10 ,,,a '0 10C.le. problem.
Recop of ten instruct;",,, for e.ch key CBd2 test.
Simplified Iron! panel d •• wing which ,howl the I •• d conneC'
tion~.nd control >elUp for e.ch le<l. If. con!rol" required tor
111. 1<1t. <1 " m.,••d on 'no drow,ng If. control ,sno' neede<:l.
t~. l.to.l .s ~ot .... ow~. end ,t "'a, to. lelt ,~.~., p,,..t on ""th-
0_' ::t".-;-; .~.:os: · .. .,It, ":~. ~·,w -<; """ -~: ,,,~ .. , ,-
inpul 0' ouIPUI jack, the jack will have no .ttecl on the t ... ··
.... n if co"".ete<l to some other lest poinl
Typicol lest ,elul! 10 indicate wheth., the tranKei.." i, 01'<'".
tong normally_
Common t'.",eeiv., dd.cu to h.lp IOCOt. the ,pee;/ie tr.n,·
ce; ... , block which i, cau,ing the woblem. 'MIere.e' PO .. ible.
lneW a'. li,te<l with th. mem common def""" first
Manual
•• <>s. 'ef,rence rel.,ing 10 the weeifie ~9" in the
milllual with d.,.;led i"fo,mation al>out :.... te.' being per·
formed.
Allowable eh." ... 1 <:affie, f,.qu.nci., Ilotat"" in back of the
te'lSl fo, each of the 40 """<Ia,d Cia .. 0 CB channel, ,howing
both the allowable uppe' and low", "",,".
DB con .. ,sion etlan Ilocated ,n"de the b.ck co.eOl for COnver·
t,ng .. ,, r.'ultl to dB '" ,hou! ,no need oj • slid. 'ulo <If
'C.'-:' c eolc'.'otc·
TABLE OF CONTENTS
•
ALLOWABLE CHANNEL CARRIER
FREQUENCIES .32" 33
USING THE
d8CONVERSlON CHART. 34
611 CONVERSION CHART • .. I ... ido 8Hk eo--
KEY S~OMITUT CIKm CHECK
GOIERAL TESTS
RF GENE RA TOR
IF GENERATOR
AUDIO GENERATOR,
FREQUENCY COUNTER,
CRYSTAL CHECK. , •
AM RECEIYER TESTS
AUDIO OUTP\JT POWER .
SQUELCH.
EIA RECEIVER SENSITIVITY.
ADJACENT CHANNEL REJECTION.
AGe. . . ,
RECEIVER GAIN
AM IMPULSE NOISE TEST
,
SS8 RECEIVER TESTS
GENERAL
OPERATIONK:LARIFIER TESTS.
SSB SENSITIVITY, , .
ADJACENT
SIOE8AND REJECTION
AGC.
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.9
10
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SQUELCH
IMPULSE NOrSE
TEST
AM TRANSMITTER TEsn
AM RF POWER,
AM TRANSMITIER FREOUENCY
AM PERCENT OFF CHANNEL_
AM MODULATION.
sse TRANSMITTER TESTS
SS8 TRANSMITIER FREQUENCY
SS8 PERCENT OFF CHANNEL
SS8 CLARIFIER CONTROL TEST
SS8 TRANSMITTER POWER
BALANCED MODULATOR
ONE·TONE METHOD.
TWO·TONE METHOD.
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