Hirschmann GHV 820 C Betriebsanleitung Seite 7

2. Adjuster elements (Fig. 2)
Level attenuation, line equalization and return
channel configuration can be changed by
means of jumper elements (shown in fig. 2).
The jumper elements are set horizontal on
"0 dB" or vertical on the desired value
Position of jumper elements:
„off = 0 dB"
Fig. 2: Circuit board with cover,
position of the jumper elements are shown
in delivery condition (TV band I, return
channel passive)
Line
equalization
0...16 dB
Level
adjuster
0...16 dB
Return chan-
nel input
off / on
3. Close the housing lid:
Put the housing lid on the housing and press
all the way round. The sheet steel segments
„on"
input /
output RC
Examples:
Level adjuster at the input - position of the
jumper elements:
0 dB
6 12
2 4
Typical return channel applications:
TV band I:
RC active:
10
Return channel
configuration
will now be pressed against the inner wall of
the housing. Screw in the central screw.
4 dB 14 dB
6 12 6
2 4 2
- RC: off (input and output)
- RC configuration: passive
- RC: on (input and output
- RC configuration: active
output /
input RC
12
4
Level
adjuster,
output RC
0/10 dB
Level
adjuster,
input RC
0...9 dB
Return chan-
nel output
off / on
7