Motorola Car Satellite TV System DCH3200 ユーザーズマニュアル

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4 DIAGNOSTICS 
 
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Figure 4-5 Front panel display for in-band diagnostic 
 
 
 
 
 
The In-Band Status fields are:  
Field Description 
Mode 
The values displayed on the OSD are:  
64 QAM — 64 QAM digital channel 
256 QAM — 256 QAM digital channel 
Carrier Lock 
Indicates whether the in-band receiver is locked to the carrier. If a digital carrier is 
not present, it indicates the carrier is not locked: 
 OSD 
Front 
panel 
Description 
 
YES L 
Carrier 
locked 
 
NO 
Carrier not locked 
PCR Lock 
Indicates whether the in-band receiver is locked to the current program clock 
reference for a digital video service on the specified tuner. If a digital carrier is 
not present, it indicates the PCR is not locked. 
Data 
Indicates whether data is being carried on the in-band stream. The indicators 
cover all packet processors regardless of the stream they are monitoring: 
 OSD 
Front 
panel 
Description 
 
YES 
On 
In-band data detected within last 5 seconds 
 
NO 
Off 
In-band data not detected within last 5 seconds 
Frequency 
The In-band frequency is center RF carrier frequency tuned for the digital service 
on the specified tuner. The frequency is displayed in MHz in xxxx.xxx format and 
ranges from 54 to 860 MHz. 
SNR 
When carrier lock has been established, displays an estimate of the carrier 
signal-to-noise ratio in dB, with an explanation: 
GOOD — Good value 
FAIR — Marginal signal level, check the signal 
POOR — Unusable signal 
INVALID — Invalid SNR value  
5 Second Error Counts  Indicates the number of correctable and uncorrectable digital multiplex errors, up 
to 9999. It is updated every 5 seconds and reset each time the DCH3200 is 
power cycled or another digital multiplex is tuned. The maximum value displayed 
is 9999, even if there were more than 9999 errors. 
IB diagnostic 
indicator
Data activity 
indicator
Carrier lock indicator 
(L = locked, U = unlocked
)