User`s manual

P ULSAR BG Audio SubCarrier Input
Page 1
1 DESCRIPTION
Installation of this option into the PULSAR offers the possibility to connect an external audio subcarrier
that will be mixed with the internal vision carrier. This external carrier is used instead of or together
with the internal sound carrier.
This audio subcarrier can be generated by:
e.g. - an intercarrier output of a demodulator (e.g. VSD 200)
- a Nicam encoder (NE 728)
With this option two extra inputs become available at the rear:
- a MAIN audio subcarrier input
- an AUX audio subcarrier input
2 SPECIFICATION
- Connector............................................................................... BNC
- Input impedance ..................................................................... 50 Ohm
- Return loss ............................................................................. >20 dB F
subc
± 1 MHz
- Input level............................................................................... +37 dBmV to +50 dBmV
3 INSTALLATION
Please read this chapter carefully before installing the option.
The installation procedure is only necessary when ordering this option sepa-
rately. When ordering a P
ULSAR with Audio Subcarrier Input, the installation
has already been carried out during production.
For location of the boards, connectors and jumpers use the internal layout diagram
Before changing anything in the P
ULSAR, remove the power cord to switch off
the power supply.
3.1 Opening The PULSAR
•
Unplug the power cord to turn off the P
ULSAR.
•
Unscrew the nine screws (Torx 10) holding the top cover.
•
Pull the top cover backwards and remove it.
•
Loosen the nine screws (Torx 10) holding the bottom cover.
•
Remove the bottom cover.
OPTION: AUDIO SUBCARRIER INPUT Type: Nicam Intercarrier Input
ORDER NUMBER: C9825510
WARNING
REMARK