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Audio Phone Circuit Installation
5.3.4 Multi-Phone Jack Audio Circuit in Class A Configuration
For wiring specifications see section 5.3.1. Figure 5.5 illustrates how to wire the Multi-Phone Jack audio circuit (Class A) and SLC for
(Class A) configuration. In the Multi-Phone Jack configuration, the maximum Mini-Monitor Contact wiring resistance between the first and
last FPJ must be less that 100 ohms.
.
5.3.5 Telephone Jack Only Audio Circuit
The FFT can also be configured using only the Fire Fighters Phone Jack (FFT-FPJ). In this configuration, the SK-MINIMON module is not
required for system operation. To configure the FFT for Telephone Jack only, the DIP Switch position 1 must be off (SLC Devices not
Installed). See Table 3.1.
Audio wiring for this configuration is detailed below. See Figure 5.6 and Figure 5.7.
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Figure 5.5 Multi-Phone jack Audio Circuit Wired in Class A
PRELIMINARY: Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Wiring Requirements for the Audio Telephone Circuit
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