Power Line Carrier ____________________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
5-13
8.
RX Trip 1 Shift Direction:
In 2F mode selects the trip direction. The options are “Shift
Up” or “Shift Down.” In 3F mode selects the “Trip1” direction, the “Trip2” direction is
automatically set to the opposite direction. The options are “Shift Up” or “Shift Down.”
9.
Pretrip Timer:
Determines how long a FSK trip must be present before it is declared
valid. For 200Hz, this should be set to 3.125ms. For 500Hz and 1000Hz it should be
set to 0.5ms. The time can be reduced for faster trips or lengthened for more security.
Can be set from 0-10ms in increments of 0.125ms.
RX Alarm Settings:
10.
Low Signal Level Alarm:
Sets the RX signal dropout threshold. If the RX level drops
more than the selected amount below nominal, an alarm is generated. The range is from
0dB to 100dB in 1dB increments. Normally set to 10dB.
Note: Disable the
corresponding alarm in the RX logic to prevent it from blocking tripping.
11.
SNR Alarm Threshold:
Sets the threshold below which an SNR (Signal-to-Noise
Ratio) alarm is generated. The range is from 0dB to 30dB in 1dB increments.
TX Alarm Settings:
12.
Reflected Power alarm Threshold:
Sets the threshold above which an RPM (Reflected
Power Meter) alarm is generated. The range is from 0% to 100% in 1% increments.
