36
Terminals
External alarm lines.
See Figure 5 for these connections.
Trigger.
Positive is always present on the [POS] terminal, whilst Negative
is always present on the [
] terminal. Use these terminals to trigger the
external alarm lines, as illustrated in Figure 5 on page 37.
Tamper lne.
Use these terminals to detect tamper on the GTCOM box (refer to
Programming / Tamper).
Supply Voltage.
The GTCOM requires a 13.8 Vdc, 70 mA Max.
If the supply voltage drops below 11.3 Vdc and 9 Vdc, the GTCOM will gene-
rate the ‘
Low Battery 11 V
’ and ‘
Low Battery 9 V
’ events (refer to
Programming).
External Telephone line (PSTN).
Connect the external telephone line
to
these terminals. The GTCOM must be connected upstream of line-sharing
telephone devices (see figure 5).
Internal Telephone line.
Use these terminal for the connection of line-sharing
telephone devices.
The following paragraph describes the GTCOM connections.
F
Use shielded cable for all connections to the external line terminals, with one
end connected to negative and the other left free.
n
n
Connecting external alarm lines
The external alarm lines can be connected to the free voltage changeovers of
the security system, or wireless receiver alarm relays, as shown in Figure 5,
or to specific terminals.
F
In the latter case, the connection between the negatives of the boards is of
utmost importance for proper functioning of the circuit.
n
n
Connecting the internal tamper alarm lines
Connect the [A.S.] terminals to a normally closed switch, then, program the
telephone numbers to call and the corresponding event codes (refer to
Programming).
L1......L8
POS and
A.S.
+12V e
L.E.
L.I.
