RFL 9780 RFL Electronics Inc.
April 8, 2003 4-10 (973) 334-3100
4.7.3 EXTERNAL METER TYPE
Two types of external carrier level meters are supported by the 9780. The nominal ±10 dB range can
be mapped to either a 0 to 100 µA range, or to ±1.0 Vdc. The desired meter type is selected using
jumper J1 on the CLI Module, see Paragraph 13.4.1 for more information.
4.7.4 TRIP LATCH CONFIGURATION
The trip indicators (the front panel trip sent and trip received LEDs and the Trip Sent relay) can be set
for momentary or latching operation using SW7-1 on the Logic Module. See Paragraph 6.3.11 for more
information.
4.7.5 ALARM PICK-UP AND DROP-OUT
In order to avoid momentary (nuisance) changes of state of the alarm condition, pick-up and drop-out
timers are provided. The pick-up timer requires a constant alarm condition for a prescribed amount of
time prior to actually placing the 9780 in an alarm state. The drop-out timer requires a constant
absence of alarm conditions for a prescribed amount of time prior to clearing a 9780 alarm state. Each
timer is individually programmable. The pick-up timer is configured using SW6-1 through SW6-4.
The drop-out timer is configured using switches SW6-5 through SW6-8. See Paragraph 6.3.10 for
more information.
4.7.6 PRE-TRIP AND TRIP-HOLD TIMERS
The desired amount of pre-trip is configured using SW2-2 through SW2-8 on the Logic Module, see
Paragraph 6.3.4 for more information.
The desired amount of trip-hold is configured using SW4-4 through SW4-8 on the Logic Module, see
Paragraph 6.3.8 for more information.
4.7.7 PRE-GUARD AND GUARD HOLD TIMERS
The desired amount of pre-guard is configured using SW1-4 through SW1-8 on the Logic Module, see
Paragraph 6.3.2 for more information.
The desired amount of guard-hold is configured using SW3-4 through SW4-8 on the Logic Module, see
Paragraph 6.3.6 for more information.
4.7.8 TRIP AFTER GUARD / GUARD BEFORE TRIP TIMERS
The desired amount of trip after guard (TAG) is configured using SW5-1 through SW5-4 on the Logic
Module. The desired amount of guard before trip (GBT) is configured using SW5-4 through SW5-8.
To disable the TAG and GBT functions, turn off SW5-1 through SW5-8, see Paragraph 6.3.9 for more
information.
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