3
The Expansion Signal (XSIG) Card provides three additional NACs for use with either an
Amplifier Audio NAC or a power supply card (SPS, RPS, and XPS). When an XSIG Card is
added for audio NAC expansion, the card is programmed for operation with the specific amplifier
that it is expanding.
Each XSIG card must be dedicated to provide either all Audio or all DC notification; these
operations cannot be mixed.
Functions of the XSIG Card
1.
Provides three 1.5 A Class B NACs for Audio or DC notification.
2.
Switches between two power audio input sources (for example,
Flex-35/Flex-50-style dual-channel power stage switching).
3.
Accepts Class A Adapter and Class B Expander for a total of six Class B NACs or
three Class A NACs per card that can be used with audio or DC signaling.
4.
Accepts constant supervision audio NAC module for a total of three Constant
Supervision NACs per card for use with audio signaling only.
5.
When configured for use with non-alarm audio, quickly and automatically switches
to an audio source when a signal is detected at either input.
6.
Supports earth fault isolation in conjunction with the source NAC supplying the card
input.
The XSIG Card also supports the WALKTEST system test as long as the following programming
guidelines are followed:
Custom Control must be written to turn on the NACs when the “WALKTEST Group
Active” pseudo turns ON.
Lists can be created for the NACs to allow you to have them turn ON when different
groups are activated. However, a Custom Control equation would be required for
each WALKTEST group.
Optional equipment to accompany the XSIG card consists of the following:
4100-1266 Expansion Signal (XSIG) Card XNAC
(increases the quantity of Class B
NACs from three to six)
4100-1267 Expansion Signal (XSIG) Card Class A Adapter
(upgrades the three on-
card NACs to Class A)
4100-1268 Expansion Signal (XSIG) Constant Supervision NAC
(replaces the on-card
NACs with 3 Class A/B Constant Supervision NACs
Continued on next page
Introduction to the Expansion Signal Card
Overview
Optional Equipment
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