TKH security VBS 2020 TX-3 User Manual

1. General description
The VBS 2020 TX-3 plug-in module contains three
identical optical video baseband transmitters. Video
input to each of these
transmitters is converted into intensity modulated
optical equivalents. Signal integrity is preserved
with the aid of video clamping, making installation
and operation adjustment-free. The units transmit at
an optical wavelength of 850 nm and must be
connected to multimode optical fiber.
The 7TE modules will slot into the backplanes of
TKH Security's MC 10 or MC 11 power supply
cabinets. Details specific for the stand-alone
version (/SA option)
supplementary, separate document.
VBS 2020 TX-3 transmitters are suitable for use in
combination with ADV
incorporation of two independent streams of digital
data into the video signal.
2. Indicators and connectors
Figure 1 shows the signal connection facilities and
indicators on the front panel of a VBS 2020 TX-3
transmitter module (see also table 1).
o

o
, ST connectors (3x)

, 75  BNC connectors (3x)
Status indicator LEDs
* DC
* NV, 3x
Table 1. Indications and connectors on the front panel
of the VBS 2020 TX-3
3. Installation instructions
1. VBS 2020 TX-3 units should always be used in
combination with TKH Security power supply
cabinets or in TKH Security stand-alone
housings.
2. Plug the module into the power cabinet (or
connect the power supply of the /SA housing)
and connect suitable video and optical fiber
equipment to the module.
3. After powering on, at least the green DC LED
should glow.
4. Upon feeding a TX-3 input with a proper video
signal, the corresponding NV LED (red) should
go out.
© Siqura 2017
Version 992312-2f
VBS2020TX3 (MW10)
VBS 2020 TX-3
Triple optical video transmitter
USER MANUAL
separate analogue
are described in a
systems, allowing
Optical output
Video input
DC power supply
No video at input
VBS TX-3 VBS TX-3
DC DC
CH1 CH1
NV NV
CH2 CH2
NV NV
CH3 CH3
NV NV
Figure 1.
VBS 2020 TX-3
front panel layout
4. Care and maintenance
In order to maintain reliable operation of the
module, observe the following:
- Prevent dust from collecting on the equipment
- Protect the equipment against moisture
- Maintain sufficient free space around the equip-
ment for cooling.
General safety and EMC information is found in the
final section of this document.