- 11 -
HDMT 263, HDMT 265
5.2 l
evel
set tIng
In order to prevent interference within the head-end station and the cable sys-
tem, the output level of the COFDM module must be lowered by approx. 10 dB
compared to analogue modulators.
LED –
Channel strip “A“
Level control
-20 dB
LED –
Channel strip “B“
• Compare and adjust the levels of the channel strips "
A
" and "
B
" if the differ-
ence is ≥ 1 dB (s. item "Compare/adjust the HF output level of the channel
strips", page 16).
• Using the level control (-20 dB), adjust the output level of the modulator of
the COFDM module to match the output levels of the modulators of the other
modules.
