Motorola DCX3200, Руководство по установке

Страница: 46 / 77

4 DIAGNOSTICS
38
Field Description
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
AGC
When carrier lock has been established, displays an estimate of the AGC as a
percentage, with an explanation:
GOOD — Good value
FAIR — Marginal signal level, check the signal
POOR — Unusable signal
INVALID — Invalid AGC value
EMM
Provider ID
Displays the conditional access stream for the DCX3200, in hexadecimal.
EMM PID Displays the packet identifier (PID) stream the DCX3200 tunes to for EMM data,
in hexadecimal.
Network
PID Displays the network PID to which the DCX3200 is tuned to receive network
messages, in hexadecimal.
Hunt Mode
The hunt mode includes Hunted, None, Round Robin (RR), Search (SRCH), Fixed
Frequency (FIX), or EMM Provider ID (EMM).
LKC
The last known carrier is the last valid OOB frequency displayed in MHz and
ranges from 70 to 130 MHz, with the specific values of: 75.25, 104.20, 72.75,
92.25, 98.25, 107.25, 107.40, 110.25, 116.25, and 103.75.
LKC will remain blank during hunting if a valid carrier has not been found, and
will be populated once a valid OOB is found.
Agile OOB Tuner Hunting
An OOB frequency can be selected manually by pressing the MENU button while in the
OOB Status diagnostics screen. To exit this mode, press the MENU button a second
time, or press the POWER button.
If the set-top is in the process of hunting for an OOB frequency, control of frequency
selection is suspended, i.e. pressing Menu button on OOB status screen to display
MAN FREQ is not available when the set-top is hunting.
Manual Selection of the OOB Frequency (OSD Frequency Override in Hunted Mode)
The manual override frequency capability is only displayed if the box is not currently
hunting and the operator presses the
MENU
key while OOB OSD diagnostics are
displayed. The MAN Freq displays the LKC and allows the operator to select (via scroll
up/down) a specific frequency to check if a valid OOB is on that specific frequency. The
MAN Freq parameter is the OOB frequency selected in the frequency selection mode
and displayed in MHz, with the specific values of 75.25, 104.20, 72.75, 92.25, 98.25,
107.25, 107.40, 110.25, 116.25, and 103.75.