4.7.5 The VB260 QAM Demodulator Module(VB220 Option)
The VB260 DVB-C QAM demodulator is an optional input interface module.
The connectors are:
RF IN: RF input – 75 ohm F-connector
ASI OUTPUT 1: ASI transport stream output – 75 ohm BNC female
ASI OUTPUT 2: ASI transport stream output – 75 ohm BNC females
GPI: Alarm relay output – 9 PIN D-sub male
GPI – Pinout of alarm relay output (to be implemented)
Normal operation Alarm/Power off
Pins 6-7: Contacts closed Pins 6-7: No connection
Pins 7-8: No connection Pins 7-8: Contacts closed
Pin 5: Gnd Pin 5: Gnd
An LED indicates whether the demodulator locks to the incoming RF signal or not.
The VB260 module was made end-of-life in 2010 and is now superseeded by the
VB262 dual RF input ITU-T J.83 Annex A/B/C QAM/8VSB module.
PROBE USERS' MANUAL VERSION 5.0
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