Harris M7300 - Page 68

MM-014763-001, Rev. E
68
Table 11-1: M5300/M7300 Option Cable CA-012349-001 Interconnections
44-PIN I/O
CABLE
CONNECTOR
P1 PIN
SIGNAL NAME TO/FROM DESCRIPTION
12 MICHI P4 pin 11
1 EXTALO P4 pin 12
In a front-mount M5300/M7300 radio installation, MICHI
and EXTALO provide the public address (PA) mic audio
from the mounted (local) CH-721 to the siren and light
system (e.g., Federal Signal SS2000 SmartSiren). Pin
11 connects to SS2000’s DB-9 pin 5. Pin 12 connects to
SS2000’s DB-9 pin 6. For a remote-mount radio
installation, see footnote
5
.
14 VOLHI P4 pin 13 Volume High
15 CTLON P4 pin 14 Control On Digital Output (for non-CAN based radio)
16 XTONEENC P4 pin 15 External Tone Encode Audio
17 XTONEDEC P4 pin 16 External Tone Decode Audio
6 EXTALO P4 pin 17 External Audio Output (Balanced, Low)
24 HORNRING P4 pin 18
In a front-mount M5300/M7300 radio installation, this pin
for the siren/PA interface is the horn/ring logic input to the
radio’s mounted (local) CH-721. When a connected third-
party siren and light system (e.g., Federal Signal
SmartSiren SS2000) has its horn/ring function active, this
input is used to signal the head/radio as such. Connects
to SS2000’s DB-9 pin 8. For a remote-mount radio
installation, see footnote
5
.
23 SONOFF P4 pin 19
In a front-mount M5300/M7300 radio installation, this pin
for the siren/PA interface is the siren on/off logic output
(open-collector) from the radio’s mounted (local) CH-721.
It is the signal that powers the connected third-party siren
and light system (e.g., Federal Signal SmartSiren
SS2000) on and off. Connects to SS2000’s DB-9 pin 4.
For a remote-mount radio installation, see footnote
5
.
18 INP1 P4 pin 21 Digital Input 1
2 OUT1 P4 pin 22 Digital Output 1 (open-collector)
29 TXENB+ P4 pin 23 Transmit Enable B+ (for non-CAN based radio)
27 EXTMIC P4 pin 24 External Mic Audio Input
28 SWA+ P4 pin 25
Switched A+ DC Power Output
(for non-CAN based radio)
32 GPS_NMEA_RX P5 pin 2
GPS Receiver Position Data Serial Data Output
(NMEA-Formatted)
31 GPS_NMEA_TX P5 pin 3
GPS Receiver Module Initialization Data Serial Data Input
(NMEA-Formatted)
7 GND P5 pin 5
Ground for GPS Serial Data Signals
(fused on radio’s PK Board at 3.15 amps)
11 IGNITION (no connection) Unused/Spare ignition sense input
33
through
44
— (no connections) These pins of P1 are not used/not connected