JRC JFE-585 - Tuning Point

TUNINGPOINT
Whenthereistransducerchecker,itdoesn'tneedtohavethischeck.
Checkthetunin
g
fre
q
uencyofTransducer.
1 TransducercableisremovefromtheterminalofMatchin
g
Box.
2 Measurethefollowin
g
corecablesbytheOscillator(Si
g
nalGenerator)andOscillosco
p
e.
3In
p
utfollowin
g
si
g
nalstoWhiteandblack.
4Si
g
nalmonitorin
g
byOscillosco
p
e.
5 Fre
q
uencyismovedu
p
anddown,andaDIP
p
oint(Si
g
nallevelminimum
p
oint)
isatunin
g

p
oint.
6 Thetunin
g
fre
q
uencyoftransducerisnormalifthereisadi
p

p
ointinthefollowin
g
ran
g
e
.
Oscillator Scope
Out
p
utVolta
g
e1to1.5V
p
-
p
Nottuning
Fre
q
uency
JFE-582 200kHz±5kHz
JFE-58550kHz±1kHz
Tuningpoint
Normaltunin
g
fre
q
uencyran
g
e
JFE-582 200kHz±5kHz
JFE-585 50kHz±1kHz
V
p
-
p
↑
fo= kHz
fo→f

JFE-582 fo=200kHz±5kHz
JFE-585fo=50kHz±1kHz

7 Iftheresultofthemeasurementisexce
p
tfortheaboveran
g
ethentransducerdefectiv
e
60