Power Line Carrier ____________________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
5-69
5.6.8 Attenuator Board
The function of the attenuator board is to provide 40dB of attenuation during loopback testing.
Toggle switch SW1 is used to select either Normal or Loopback operation. Test points TP1 and
TP2 allow the user to monitor the output of the attenuator.
SW1
R
1
R
2
R
3
R
4
R
5
R
9
R
10
R
11
R
7
R
6
R
8
TP2
TP1
2003 RFL ELECTRONI CS INC, NJ, USA
9508 ATTENUATOR BD,ECB NO 107813 REV-A
SW1
Figure 5-46. 9508 Attenuator Board
Attenuator Board Settings
The Attenuator Board has one toggle switch (SW1) that must be set for proper system operation.
The toggle switch SW1 selects either Normal or Loopback operation. In Normal operation, set
the switch to the UP position. In Loopback operation set to switch to the DOWN position. The
switch location is shown below and is accessible when the Attenuator Board is plugged into the
chassis.