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Routine Operation
3-36
MRX4000 PLUS
Operator’s Guide/
Technical Reference Manual
IN MPEG or RF IN MPEG operation mode and press
the
SEL
key.
11.
Press the
ESC
key until the Main screen is displayed.
12.
Press the Up arrow key, as required, to select the
COFDM Settings
option.
Notes
In the following step, if the cursor adjacent to the
COFDM Settings
option is not a
>>
cursor, the
wrong Preset has been selected for the IF IN
MPEG or RF IN MPEG operation mode.
Repeat from
step 4
to select the correct Preset.
13.
Verify the cursor adjacent to the
COFDM Settings
option is a
>>
cursor.
14.
Press the
SEL
key or the Right arrow key and observe
the
COFDM
menu (
Figure 3-70
) is displayed.
Figure 3-70: COFDM Menu - Typical
15.
Press the Up or Down arrow keys, as required, to
select the
>> Metrics:
option.
16.
Press the
SEL
or Right arrow key and observe the
COFDM Metrics
menu (
Figure 3-71
) is displayed.
COFDM
> Bandwidth (A): 6
ModType: Unlk
FEC: Unlk
Figure 3-71: COFDM Metrics Menu - Typical
17.
Press the Up or Down arrow keys, as required, to
select the
* Lock:
option.
18.
Observe
Lock:
indicates
Unlocked
or
Locked
.
19.
Observe the Signal to Noise Ratio
SNR:
indication.
20.
Press the Down arrow key to select the *
Post:
option
as shown in
Figure 3-72
.
Figure 3-72: COFDM Viterbi Bit Error Rates - Typical
21.
Observe the Pre Viterbi (
Pre:
) and Post Viterbi (
Post
)
Bit Error Rates (
BER
).
22.
Press the
ESC
key until the Main screen is displayed.
COFDM Metrics
* Lock: Unlocked
SNR: 00.00
Viterbi BER:
COFDM Metrics
Viterbi BER:
Pre: 1.000e+00
* Post: 7.817e-03
Summary of Contents for MRX4000 PLUS
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