DVR-640H-S
84
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ERR RATE :
∗
.
∗
e-
∗
• While the User Operation screen is displayed, press the ESC then DISP keys, then the DIG/ANA
key twice, in that order.
• While subscreen 1 of the first screen is displayed, press the DIG/ANA key.
[How to enter]
(3) Simple Error Rate Measurement (Subscreen 2)
Judge the results of the error rate measurement by
referring to Table 1 on page 89.
[Tips]
During VR mode playback, the average value of the past 10 VOBUs is displayed. During DVD-Video or Video mode
playback, the average value of the past 256 sectors is displayed.
During VR mode playback, the speed ratio of the drive (/: normal, no indication: double speed) is also displayed.
Subscreen 2
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.)
Field Intensity
AGC VOL
Intense field area
(Clear image)
Less intense field area
(Noise may be generated.)
Very weak field area
(Image damaged. EPG/VPS/PDC cannot be obtained.)
70 dB
µ
or more
3300 mV or less
60 dB
µ
or more
70 dB
µ
or less
3300 - 4600mV
60 dB
µ
or less
4600 mV or more
Tips:
For good reception, the field intensity must be 60 dB
µ
or more (AGC Volt 4600 mV or less).
For accurate measurement, use a field intensity meter.
High
Input Frequency
Display
Low
Just Tune
Low 1
Low 7
Center
High
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299