7
The Multiband amplifiers GNS have the following
setting possibilities:
Default
setting
Level adjuster,
at all inputs
0...20 dB
0 dB
Power supply for the
connected terrestrial
antennas
input UHF
0 / +5 V
0 V
input VHFIII
0 / +5 V
0 V
Combining the inputs
UHF and VHFIII, e.g.
when using combination
antennas
off/on
off
Option:
Power supply for the
combined inputs UHF
+ VHFIII (with additional
jumper, not included)
0 / +5V
-
Settings are done as follows:
1. Remove the housing lid:
After slackening the central bolt (a) lift the lid
off by releasing the catch on the left-hand
side (b).
For adjustments now the level adjusters and
the jumper on the circuit board are accessible.
Fig. 1 Housing
Fig. 2 Adjuster elements
- Level adjuster 0...-20 dB at all inputs
- Position of the jumper:
2. Adjuster elements
3. close the housing lid:
Put the housing lid on the housing and press
all the way round. The sheet steel segments
will now be pressed against the inner wall of
the housing. Screw in the central screw.
Setting possibilities
a
b
above
Level adjusters at all
inputs
Jumper
no power supply
for terrestrial antenna
(Default setting)
+5V power supply
at UHF
+5V power supply
at VHFIII
no power supply
UHF + VHFIII common at input UHF
UHF + VHFIII common at input UHF
+5V power supply
