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HMM 470 / HMM 470 OIRT / HMS 470
2.4 Description
The modulator modules contain four modulators, which convert existing video
and audio signals into CCIR PAL B/G signals in the C 02 … C 69 channel
range (HMM 470 / HMS 470)
or OIRT PAL-D/K signals in the channel range
R 01 … C 69
(
HMM 470 OIRT
) via the AV interface.
The modulators are labelled (analogue to the channel strips) as "
A
", "
B
", "
C
"
and "
D
", and can be individually programmed. Four LEDs indicate if the re
-
spective modulator is switched on (LED illuminates) or off.
The audio and video signals being fed in through the 26-pin socket of the mod
-
ulator module are modulated onto the carrier frequencies (channels) which
have been selected. The HF output signals are sent through the HF output on
the modulator module to the output collector. The levels of the HF output sig-
nals are adjustable by software.
When the head-end station
is switched on, the two-line LC display shows the
"
SETUP
" menu and the software version of the control unit. The head-end sta-
tion total output level can be adjusted in this menu.
If the modulator modules are not detected by the head-end station you can
update the head-end station’s operating software via the head-end station’s
9-pin D-Sub socket, using a PC or notebook and the "
BE-Flash
" software. You
can find the current operating software for the head-end station, the software
"
BE-Flash
" and the current assembly instructions on the website "
www.gss.de
".
The modulator module is designed exclusively for use in the STC 160 head-
end station.
