Description - Triax CGMM 480 Assembly Manual

2.4 d
es C r i p t i o n
The modulator modules contain four modulators, which convert existing CVBS
and audio signals into CCIR PAL B/G signals in the C 02 ... C 69 channel
range (CGMM 480 / CGMS 480) or OIRT PAL-D/K signals in the channel
range R 01 ... C 69 (CGMM 480 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 RF output signals are sent through the RF output on
the modulator module to the output collector. The levels of the RF output signals
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 up-
date 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. To operate
the digital module the software version of the control unit (head-end station)
must be "V 10" or higher. 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.triax.com".
The modulator module is designed exclusively for use in the CSE 2800 head-
end station.
- 5 - CGMM 480 / CGMS 480