Adjustments & Settings - Triax GHV 12 -85 serie Bedienungsanleitung

GHV 1200-85/204 House Distribution Amplifier /
Hausanschlussverstärker
DOCSIS 3.1
3.2 Adjustments & settings
Provisioning of the amplifier using Rotary Switches and Jumpers as shown:
See Fig. 3 Downstream
Attenuator (Input)
1
In 1dB-Steps
Slope (Input)
2
in 1dB-Steps
Attenuator
3
(Interstage)
4 Slope (Interstage)
Upstream /
Return path
5 Basic gain reduction*
Attenuator (Input) *
6
in 1 dB-Steps
7 Slope (Interstage)
Attenuator
8
(Interstage)*
Return Path
9
settings
*) In order to remain the high signal to noise performance in the return path in most cases it's recommended to do provisioning
of the return gain by setting elements in following order:
1. Reduce basic gain by 6dB (5) 2. Set interstage attenuator (8)
Fig 3 Position of Jumpers/Setting elements
Setting Range
0-15 dB
0-15 dB
0 / 6 dB
0 /3/7/10
- 6 dB
0/15 dB
0 / 3 / 6 / 9
0 / 6 dB
Active / Passive /
OFF
3. Set input attenuator (6) for the return path
5
Setting element
Default setting
Jumper fig.
0 dB Rotary switch
0 dB Rotary switch
0 dB Jumper
0 dB Jumper
0dB = max Gain Jumper
0 dB Rotary switch
3 dB Jumper
0 dB Jumper
Active Jumper
EN/DE