Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
12.4.1 METER SELECT
The module can provide a signal to an external meter. The external meter output can be configured for
either a current or voltage meter.
With jumper J1 in the “A” position, the range of the external meter should be from +1 to -1 Vdc. This
would correspond to a full-scale range of ± 10 dB, with 0 V indicating 0 dB.
With jumper J1 in the “B” position, the range of the external meter should be from 0 to -100μA. This
would correspond to a full-scale range of ± 10 dB, with -50μA indicating 0 dB.
With jumper J1 in the “C” position, the range of the external meter should be from 0 to –5 Vdc. This
would correspond to a full-scale range of ± 10 dB, with –2.5 Vdc indicating 0 dB.
12.4.2 METER NULL
R34 is used to null the meter to read 0 dB. This is typically performed with the system installed and the
far-end station transmitting a 1 W signal.
12.4.3 CARRIER DETECT LEVEL
R26 is used to set the carrier detect threshold at the desired level. This is normally performed by
attenuating a normal receive level to the desired threshold amplitude and adjusting R26 to activate the
alarm.
12.4.4 VOICE FILTER OPTION (J1 and J2)
Connectors J1 and J2 are used when the voice filter is installed. The voice filter plugs into these
connectors and is secured to the board with four standoffs and screws. Refer to Section 15 for more
information on the Voice Module and the voice filter.
RFL 9785 RFL Electronics Inc.
July 7, 2006 12-7 (973) 334-3100
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