Pioneer DVR-560H-K, Руководство по обслуживанию

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47
DVR-LX61
5 6 7 8
5 6 7 8
A
B
C
D
E
F
ERR RATE : *.*e-*
• W hile the User Operation screen is displayed, press the ESC then DISP keys, then the DIG/A N A
key twice, in that order.
•
W hile su b screen 1 of the first screen is displayed, press the DIG/A N A key.
[How to enter]
Press the ESC key.
[How to q uit]
[Measurement procedures]
Display su b screen 2.
Load the Test disc (GG V 1025).
Judge the results of the error rate measurement b y
referring to Ta b le 1.
[Tips]
During V R mode play b ack, the average value of the past 10 V OBUs is displayed. During D V D- V ideo or V ideo mode
play b ack, the average value of the past 256 sectors is displayed.
During V R mode play b ack, the speed ratio of the drive (/: normal, no indication: dou b le speed) is also displayed.
Su b screen 2
1) Fre q uency Difference (Fre q Diff)
How much tuning is off is monitored, as shown b elow:
2) AGC volta g e (AGC Volt)
The gain controlled b y 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
(
N oise may b e generated.)
W eak field area
(Much noise. EPG/ V PS/PDC sometimes cannot b e
o b tained.)
V ery weak field area
(Image damaged. EPG/ V PS/PDC cannot b e o b tained.)
70 dB or more
3100 m V or less
50 dB or more
70 dB or less
3100 - 4400m V
30 dB or more
50 dB or less
4400 m V or more
(It is una b le to discriminate
under the weak field area.)
30 dB or less
4400 m V or more
(It is una b le to discriminate.)
High
(within 200kHz)
Input Frequency Display
Low
Just Tune
Faraway
High 1~5
Low 1~5
Low 7
Center
High 7
within
200kHz
over
200kHz
[2] Simple Error Rate Measurement (Subscreen 2)
Tips:
For good reception, the field intensity must b e 50 dB or more (AGC V olt 4400 m V or less).
For accurate measurement, use a field intensity meter.