Barco PULSAR BG, User Manual

Page: 43 / 126

P
ULSAR
Audio / Video Auxiliary Input
Page 1
1 DESCRIPTION
The Audio / Video Auxiliary Input for automatic fall-back switching enables the switching between
main and auxiliary baseband input signals. With the front panel on “AUTO” the circuit will check the
presence of sync pulses in the main video signal. If these are not available the unit will switch -after a
short selectable delay- to the auxiliary standby signal. This feature is remotely controllable by means
of a hard contact on the rear panel (see 3.3.2.2 Status and Control) or by the RS-485 connector and
the ROSA software.
2 SPECIFICATIONS
- Video and audio specifications................................................ unchanged
- Inputs Main ............................................................................. BNC, 75 Ohm
Aux ............................................................................. BNC, 75 Ohm, loop through
- Isolation between main and aux .............................................. Video: > 60 dB
............................................................................. Audio: > 60 dB
- Isolation between audio and video .......................................... > 60 dB
- Video detector on main input .................................................. threshold level: 0.55 Vpp
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/Video Auxiliary Input, the installa-
tion of the board is carried out during production.
For location of the boards, connectors and jumpers use the different layouts in chapter 4: layouts.
Before changing anything in the P
ULSAR
remove the power cord to switch
off the power supply.
3.1 Opening The P
ULSAR
•
Remove the power cord to switch off the power supply.
•
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/VIDEO AUX INPUT
ORDER NUMBER: C9825506
REMARK
WARNING