6-5
6-2-4. RF Level Simplified Diagnosis (Subscreen1)
1) Turn of the main power ON.
2) On the screen after exiting all menu screens, press “ESC” on the service remote controller.
3) Press “DISP”.
4) Press “DIG/ANA”.
*
1) Frequency Difference (Freg Diff)
How much tuning is off is monitored, as shown below:
*
2) AGC voltage (AGC Volt)
The gain controlled by the tuner is monitored to infer the input electric field intensity.
(The accuracy of inference differs depending on the product.)
[Tips]
For good reception, the field intensity must be 50 dB
µ
or more (AGC Volt 4400 mV or less).
For accurate measurement, use a field intensity meter.
5) Press “ESC”. (Returns to the original screen)
* The RF signal status can be obtained from the input frequency
deviation information and the AGC voltage.
----
VERSION : 1.
**
SYSCON : RELEASE_
***
Rev
:1.
******
TUNERCON : 198.000
OK
DRIVE : DVD-RW DVR-L11X
OK
1.00
OK
HDD INT : WDC WD1600AAJS-9
160
HDD USE :
160
DEVICE : E2R-FE
FLASH : 64M
REGION : 2
C :
************
Input CH :
**
ch
Freq Diff : Low 1
AGC Volt :
****
mV
Input channel
Input frequency difference
*
1)
AGC voltage
*
2)
Input Frequency
Faraway
High
(within 200kHz)
Just Tune
within
Low
200kHz
over
200kHz
Display
High 7
High 1-5
Center
Low 1-5
Low 7
Intense field area
(Clear image)
Less intense field area
(Noise may be generated.)
Weak field area
(Much noise. EPG/VPS/PDC sometimes cannot be
obtained.)
Very weak field area
(Image damaged. EPG/VPS/PDC cannot be obtained.)
Field Intensity
70 dB
µ
or more
50 dB
µ
or more
70 dB
µ
or less
30 dB
µ
or more
50 dB
µ
of less
30 dB
µ
or less
AGC Volt
3100 mV or less
3100 – 4400mV
4400 mV or more
(It is unable to discriminate
under the weak field area.)
4400 mV or more
(It is unable to discriminate.)
