Blonder tongue AMM-806, Reference Manual

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Main LCD Lock Display
After the unit has displayed the boot-up sequence it will display the
main LCD lock display. In this mode the LCD displays the actual
status as depicted in the diagram below. The LCD lock display may
be interrupted at any time by pressing the any of the arrow keys.
Left/Right Sequence Details
The Left/Right Sequence will display four basic LCD screens. This
information will be displayed when a user depresses the t (L)
or u (R) arrow navigation keys.
• SNR is displayed when the DAP locks to an input program
channel and indicates the signal to noise ratio of the input signal
and is expressed in dB. The following are the desired input SNR
ranges for the appropriate signal modulation type:
• NO SIGNAL indicates that the input signal was not detected (no RF input)
• PLEASE SCAN indicates a scan was not performed or is required again
• AUDIO ONLY indicates no video signal
• NO AUDIO indicates no audio signal present
• SCRAMBLED PRG indicates the signal has encryption
• NO PROGRAM will be displayed if a valid lock is acquired but no
program signal is actually being detected
DAP - Digital to Analog Processor
DAP - Main LCD Display
No unit adjustments are permitted in the t (L) or u (R), all
modifications must be performed in the p (UP) / q (DN) sequence.
CAUTION
IMPORTANT
Excellent =
>30 dB >38 dB >38 dB
Good = 25—30 dB 30—38 dB 35—38 dB
Marginal =
18—25 dB 23—30 dB 30—35 dB
Non-Functional =
<18 dB <23 dB <30 dB
8VSB 64 QAM 256 QAM