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VIDEO DISTRIBUTION AMPLIFIER 1:4
The video distribution amplifier LVH-2 amplifies and distributes one video signal to four
outputs. Video inputs and outputs are made on the front panel via BNC jacks. Power
connections are made using block terminals on the rear panel. The input stage features a
parallel output for feed-through of the input signal. The gain potentiometer allows adjustment
from -1 dB to +7 dB.
SAFETY INSTRUCTIONS
• Before your initial start-up, please make sure that there are no transport damages. Should
there be any, do not take the device into operation and immediately consult your dealer.
• Operate the device only after having familiarized with its functions. Do not permit operation
by persons not qualified for operating the device.
• Protect the device against humidity and heat. Keep away from heaters and other
heating sources!
• We recommend a frequent cleaning of the device. Disconnect from mains first. Use
a soft lint-free and moistened cloth. Never use alcohol or solvents!
• There are no serviceable parts inside the device. Maintenance and service operations are
only to be carried out by authorized dealers.
• Damage, caused by manual modifications on the device are not subject to warranty. If the
device is used for other purposes than originally intended or if it is not correctly connected,
the product may suffer damages and the guarantee becomes void.
• This product is allowed to be operated with 12-24 V DC. This device falls under protection
class 3 and was designed for indoor use only.
.
OPERATION
Prior to connecting switch off all units and do not turn them on again until you have made all
necessary connections.
1 Connect the signal source (e.g. camera) via a 75
jack INPUT. The input signal fed through is available at the output LOOP OUT. This output
allows to connect the line input of another LVH-2 or a different unit (e.g. monitor). If the
output LOOP OUT is not used, the supplied 75
A).
2 Connect each unit to which the video signal is to be distributed (e.g. monitor, recorder) via
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a 75
coaxial cable with BNC plugs to the jacks AMPLIFIED OUTPUTS. Unused outputs
need not to be terminated (Fig. A).
3 To power the unit 12-24 V DC are required. For this purpose, connect a power source (e.g.
power supply unit, battery) to the terminals DC
Connect the marked core to the left contact (Fig. B).
4 The gain can be adjusted with the recessed potentiometer GAIN from -1 dB to +7 dB.
Adjust the potentiometer for 1 Vpp video level on your instrumentation. In the absence of
test equipment, adjust the value via the LED level indicator of the LVH-2. First turn the gain
counterclockwise. Then advance the gain clockwise unit the LED level indicator lights up.
.
TECHNICAL SPECIFICATIONS
Power supply: .............12-24 V DC, 60 mA
1x video input:.............1 Vpp/ 1 k (bridged), 75
5x video outputs: .........1 Vpp/ 75 , BNC (1 feed-through output, 4 amplified outputs)
Gain range:.................0 dB to +6 dB (0.9 to 2.25 Vpp)
Frequency response:..10 Hz to 10 MHz
S/N ratio:.....................>70 dB
Output isolation:..........>40 dB
Differential gain:..........0.1%
Differential phase:.......0.1 degree
Dimensions (LxWxH):.146 x 87 x 42 mm
Weight: .......................370 g
Please note: Every information is subject to change without prior notice. 20.12.2008 ©
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coaxial cable with BNC plugs to the
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terminator plug must be connected (Fig.
12-24V
. Always observe the correct polarity.
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(terminated), BNC
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