Glossary
Verbatim Owner's Manual Glossary-5
NORMALLY CLOSED Describes a monitored “contact type” input signal
circuit, for which the normal, non-alarm state is associated with the circuit
being closed (i.e. a completed connection being established between the two
conductors of the input circuit). An alarm condition causes the circuit to be
opened (broken), which the Verbatim autodialer would detect and begin placing
alarm calls. This requires that this input be programmed as Normally Closed on
the Verbatim autodialer.
NORMALLY OPEN Opposite of a Normally Closed circuit. The input
signal is open in the normal, non-alarm state and closes when an alarm occurs.
This requires that this input be programmed as Normally Open on the Verbatim
autodialer, which is the default setting for a contact type input.
NON-VOLATILE MEMORY When AC power fails, the unit continues to
operate for several hours on its internal Gel Cell battery. When this battery is
near discharge, the unit automatically turns itself off. However all the user’s
programming and all user recorded messages are kept intact by Non-volatile
Memory for up to ten years, so when power is later restored, no reprogramming
or message recording will be required.
OPEN CIRCUIT CONDITION See Closed Circuit Condition.
PHYSICAL CHANNEL OR PC Internal inputs are sometimes call
Physical Channels (PCs). PCs monitor user-supplied external sensors such as
float switches, limit switches, etc. In most cases, the outputs of logic
controllers may be connected directly to Physical Channel inputs without the
need for interfacing relays or other signal conditioning. The normal Verbatim
inputs, as distinguished from the RCs when necessary. The semantics are such
that all RCs on network 0 are PCs.
PLC ADDRESS The data table location of an object within a specific PLC’s
internal memory. The format of the PLC address is vendor dependent. For
network 0, the PLC address is the physical channel number.
POWER FAILURE The disappearance of 120 VAC power to the unit. The
unit will continue to operate under power failure until its internal Gel Cell
battery is discharged.
PULSE TOTALIZER The totalizer function accumulates a continuing
count of the number of cycles of a train of pulses presented to the input. The
pulses may be in the form of an open and closed circuit, or they may be in the
form of a 5-volt logic signal.
RECORDING RATE In the process of digitally recording the user’s voice
messages into speech memory, the message is recorded into memory at one of
four possible rates. The faster this rate of memory usage, the higher the record-
ing fidelity. However, this results in less total available recording time than at
slower rates. Rate 1 is the fastest rate giving the best sound quality. The Auto-
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