JVC LT-37X688 Service Manual page 6

1.4 TUNER DIAGNOSTIC SCREEN
This model has a function to check the connection status of the
digital tuner. The connection status can be checked following the
below procedure.
(1) Receive digital broadcasting.
(2) Press the [MENU] key to display the user menu.
(3) Select "TUNER SETUP" from the user menu, and then
press the [OK] key.
(4) Select Tuner Diagnostic (Service Use Only) from "TUNER
SETUP", and then press the [OK] key.
(5) The below screen is displayed.
Tuner Diagnostic
Frequency 803000kHz
Modulation NTSC
Input level
SR
RSE
FO
Ch# -2
Station
Frequency
This is the in-band frequency tuned up now. If channel map is
not available, this value will be set to 0 or it may become the
frequency tuned up last time.
Modulation
This is the in-band modulation mode now. "NTSC / 64QAM /
256QAM / 8VSB"
Input level
This is the input signal power level of in-band. This value var-
ies between 0 and 100.
SR
This is the Signal noise Ratio.
RSE
This is uncorrectable error packet count. (Read-Solomon Error
Correction Processing) When this value is not 0, it may have
influence on the quality of video or audio. However, note that
this value does not display an exact value depending on tim-
ing. If a signal is weak, this error will be occurred, but even if a
signal is too strong, it occurs.
FO
This is the out-of-band frequency tuned up now. This value
varies between 70000kHz and 130000kHz. If OOB is received
normally, frequency will be locked to a certain value (this
changes with an area or cable operators). When frequency is
continuing changing, OOB is not normally received.
Ch#
This is the channel number now.
Station
This is the channel station name now.
1-6 (No.YA535)
0
-
-
-
BACK MENU
Back Exit