Notifier AFP-300 Installation Manual page 109

Installing a Fire Fighter's Telephone (FFT-7 and FFT-7S)
AFP-300/AFP-400 Installation PN 50253:C1 05/22/97
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Figure 4-8 shows FFT-7/FFT-7S terminals and connections to other devices in the
system. Follow the instructions in Table 4-8 to connect an FFT-7 or FFT-7S to an
AFP-300/AFP-400 system:
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Component Function
P1 Plug for power
harness out
(75099)
P2 Plug for power
harness in
(75099)
P3 Telephone signal
loop
P4 FFT-7/AMG
control harness
(75097)
P5 No connection
SW1 Two-wire/four-
wire selector
switch
Table 4-8 FFT-7/FFT-7S Terminals and Connections
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3
3
3
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Use to
Connect a harness to another device in the chain.
Connect a harness between FFT-7 and MPS-400 to power the
FFT-7 from the MPS-400.
Make connections to a telephone circuit. P3 pin assignments are:
Pin Connection
1 no connection
2 Style Z return (–)
3 Style Z return (+)
4 Shield
5 Telephone output (–)
6 Telephone output (+)
7 no connection
8 no connection
Connect to plug P6 on the AMG or plug P5 on the ATG-2.
N/A
Set the control panel for four-wire operation:
1) Remove the switch cover.
2) Set SW1 for four-wire operation.
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Instructions
N/A
Connect to J6 on last
VCM-4 on circuit.
N/A
Connect to J5 on first
VCM-4.
N/A
N/A
4-9