Pioneer DVR-540HX-S Service Manual page 105

1
1) Frequency Difference (Freg Diff)
QQ
3 7 63 1515 0
How much tuning is off is monitored, as shown below:
Input Frequency
A
Faraway
High
(within 200kHz)
Just Tune
within
200kHz
Low
over
200kHz
2) AGC voltage (AGC Volt)
The gain controlled by the tuner is monitored to infer the input electric field intensity.
B
(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
(Much noise. EPG/VPS/PDC sometimes cannot be
obtained.)
C
Very weak field area
(Image damaged. EPG/VPS/PDC cannot be obtained.)
TE
L 13942296513
Tips:
For good reception, the field intensity must be 50 dBµ or more (AGC Volt 4400 mV or less).
For accurate measurement, use a field intensity meter.
D
(3) 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]
1 Display subscreen 2.
E
2 Load the Test disc (GGV1025).
3 Judge the results of the error rate measurement by
referring to Table 1 on page 89.
[Tips]
www
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.
F
106
1
http://www.xiaoyu163.com
2
Display
High 7
High 1~5
Center
Low 1~5
Low 7
x ao
y
. i
DVR-540HX-S
2
http://www.xiaoyu163.com
3
8
Field Intensity
70 dBµ or more 3100 mV or less
50 dBµ or more
3100 - 4400mV
70 dBµ or less
4400 mV or more
30 dBµ or more
(It is unable to discriminate
50 dBµ or less
under the weak field area.)
4400 mV or more
30 dBµ or less
(It is unable to discriminate.)
Q Q
3 6 7 1 3
ERR RATE : ∗.∗e-∗
Subscreen 2
u163
.
3
4
2 9 9 4 2 8
AGC VOL
1 5 0 5 8 2 9 9 4
m
co
4
9 9
2 8 9 9