Pioneer DVR-LX61D Service Manual page 50

1
1) Frequency Difference (Freq Diff)
How much tuning is off is monitored, as shown below:
A
Input Frequency
Faraway
High
(within 200kHz)
Just Tune
within
200kHz
Low
over
200kHz
B
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.)
Intense field area
(Clear image)
Less intense field area
(Noise may be generated.)
Weak field area
C
(Much noise. EPG/VPS/PDC sometimes cannot be
obtained.)
Very weak field area
(Image damaged. EPG/VPS/PDC cannot be obtained.)
Tips:
For good reception, the field intensity must be 50 dB or more (AGC Volt 4400 mV or less).
For accurate measurement, use a field intensity meter.
D
[2] Simple Error Rate Measurement (Subscreen 2)
• While the User Operation screen is displayed, press the ESC then DISP keys, then the DIG/ANA
[How to enter]
key twice, in that order.
• While subscreen 1 of the first screen is displayed, press the DIG/ANA key.
[How to quit]
Press the ESC key.
[Measurement procedures]
E
Display subscreen 2.
Load the Test disc (GGV1025).
Judge the results of the error rate measurement by
referring to Table 1.
[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.
F
During VR mode playback, the speed ratio of the drive (/: normal, no indication: double speed) is also displayed.
50
1
2
Display
High 7
High 1~5
Center
Low 1~5
Low 7
70 dB or more
50 dB or more
70 dB or less
30 dB or more
50 dB or less
30 dB or less
DVR-LX61D
2
3
Field Intensity AGC VOL
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.)
ERR RATE : *.*e-*
Subscreen 2
3
4
4