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LTC 4600 Series | Instruction Manual | Installation
4.6 LTC 4628, LTC 4629 Series Modules
for Video + Bosch Biphase Control
Code Transmission
4.6.1 Indicators / Operation
1. The POWER LED illuminates when AC power is
applied to the unit.
2. LTC 4628/60, LTC 4628/50, and LTC 4628/00
units: The VIDEO PRESENT LED illuminates
GREEN when a valid video signal is present, or
RED if no video is being received. The DATA
RECEIVE LED illuminates RED when no data is
received, and flashes YELLOW as data is received.
3. LTC 4629/60, LTC 4629/50, and LTC 4629/00
units: The VIDEO OUT LED illuminates GREEN
when a valid video signal is present on the
LTC 4628 Series Transmitter, or RED if no video is
present. The DATA IN LED illuminates RED if no
data is being received on the optical signal, and
flashes YELLOW as data is received.
4.6.2 Optional Connection
Because of signal amplitude variations and possible
EMI/RFI noise interference in the Biphase control data
line, the pan/tilt device may operate erratically or
intermittently when first connected. If this is the case,
add the supplied 120 ohm termination resistor across
the data connections of the LTC 4629 fiber optic
module located at the controller site.
If the supplied resistor is damaged or lost, any locally
obtained conventional 1/4 watt carbon resistor
between 100 and 120 ohms will suffice.
Bosch Security Systems | July 08, 2008
EN | 12
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