Power Line Carrier ____________________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
5-47
Table 5-19. Carrier Level Indicator loads
Input
signal
Output
voltage
0-5V position,
high impedance
load (J32)
0-1mA position,
5K load
(J33)
0-100 µA position,
low impedance load
(J34)
+10dB
5.0V
5.0V
1.00mA
100µA
+6dB
4.0V
4.0V
0.80mA
80µA
+3dB
3.25V
3.25V
0.65mA
65µA
Nominal
2.5V
2.5V
0.50mA
50µA
-3dB
1.75V
1.75V
0.35mA
35µA
-6dB
1.00V
1.00V
0.20mA
20µA
-10dB
0.0V
0.0V
0mA
0µA
Carrier Level Indicator Meter Tuning
The Offset and Scale potentiometers on the PLC Digital Module are factory set and should not
normally need adjustment. However, if changes are made to either the digital board or CLI meter
the scale can be reset as shown below.
Offset
Potentiometer
Scale
Potentiometer
J6
Figure 5-25. Location of Potentiometers on Digital PLC Module