D-12 Diagnostics
DCP501 Installation Manual
Signal-To-Noise Ratio (SNR) and Automatic Gain Control (AGC)
−−−−
OSD Only
The SNR displayed on the on-screen display is a rough estimate of the carrier signal-to-noise
ratio. The SNR displayed is a measure of the QAM cluster variance, which is proportional to the
signal-to-noise ratio.
The AGC value roughly indicates the received signal level.
Analog channels display
analog
for carrier lock. The SNR and AGC display a number for the
numeric value and blank for the ssss value.
A blank display indicates that the digital section of the DCP501 is still in the initial state. If this
occurs, check diagnostic d07.
Table D-9 lists the SNR and AGC indicators for the on-screen display:
Table D-9
SNR and AGC indicators
−−−−
OSD only
ssss
value
Meaning
GOOD
Good value
FAIR
Marginal signal level
−
check the signal
BAD
Unusable signal
D 04: Audio/Video Status
This diagnostic displays the audio and video information for the current tuned channel.
Figure D-8
Audio/Video status - OSD
04
AUDIO/VIDEO STATUS
ADP
YES
Audio Mode
(MONO, STEREO, SURROUND)
Audio SPDIF
NONE, IEC958_PCM, AC3*)
LFE 0
SAP
(YES/NO)
VP
YES
VIDEO MUTE
MPEG Method
MUTE BLACK
MPEG Muting Mode
* will display speaker combination.
ADP Lock:
Audio processor locked status
Audio Mode:
Audio modes
Audio SPDIF:
SPDIF modes
SAP:
Second audio program status
VP Lock:
Video processor locked status
MPEG Method:
MPEG method selection
Summary of Contents for DCP501 - DVD Player / AV Receiver
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