User manual

MRD 3187B User Manual
Page 25
VSB/QAM 1-4
►Selected I/O:no
Chan:__
Modulation:8VSB
VSB/QAM 1-4
Selected I/O:yes
►Chan:32
Modulation:8VSB
VSB/QAM 1-4
Modulation:8VSB
Air/CATV:OffAir
►Low:+00dBmV
VSB/QAM 1-4
Selected I/O:yes
Chan:32
►Modulation:8VSB
VSB/QAM 1-4
Modulation:8VSB
►Air/CATV:OffAir
Low:+00dBmV
6. Use the and buttons to move the cursor
to “Selected I/O:” then press the
button.
7. Use the and buttons to change the
selection to, “yes,” then press the button.
Channel
1. Use the and buttons to move the cursor
to, “Chan:” then press the button.
2. Use the and buttons to tune to the
specific RF channel of interest (2-134), then
press the button to save the selection.
Modulation
1. Use the and buttons to move the cursor
to, “Modulation:” then press the button.
2. Use the and buttons to choose the
appropriate modulation type (8VSB, QAM64B,
QAM256B), then press the button to save the
selection.
Channel Bands
1. Use the and buttons to move the cursor
to, “Air/CATV:” then press the button.
2. Use the and buttons to choose the
appropriate channel band (OffAir, Cable-
FCC, Cable-HRC, Cable-IRC), then press
the button to save the selection.
Set Low Signal and MER Error Levels
These two values are user defined threshold levels for
the signal level and MER level. Once these values are
set, if the input levels drops below the defined value,
an error will be triggered which will cause the red
“Error” LED to illuminate on the front panel, a
description of the error will be shown in the “Active
Errors” menu under the button, and an entry
will be logged in the event log.
1. Use the and buttons to move the cursor
to, “Low:” then press the button.
2. Use the and buttons to select the