Harris M7300 - Table 11-1: M5300;M7300 Option Cable CA-012349-001 Interconnections

MM-014763-001, Rev. E
67
P3, the cable’s 6-pin connector, is a connector for basics accessories (e.g., hookswitch, etc.).
P4, the cable’s D-subminiature 25-pin connector, provides audio and data connections for optional
equipment such as an external siren and light system (e.g., Federal Signal SS2000 SmartSiren
®
).
P5, the cable’s D-subminiature 9-pin connector, provides NMEA-formatted GPS serial data connections
for the external computer processing the NMEA-formatted GPS data received by the radio’s internal GPS
receiver. See Section 12 on page 72 for additional information.
Table 11-1: M5300/M7300 Option Cable CA-012349-001 Interconnections
44-PIN I/O
CABLE
CONNECTOR
P1 PIN
SIGNAL NAME TO/FROM DESCRIPTION
19 SPKR1
20 SPKR1
P2 pin 1
Speaker Audio Output 1
(Not used in a remote-mount radio installation)
21 SPKR2
22 SPKR2
P2 pin 2
Speaker Audio Output 2
(Not used in a remote-mount radio installation)
10 OUT2 P3 pin 1
Digital Output 2 (open-collector)
7 GND P3 pins 2 & 4
Chassis Ground
(fused on radio’s PK Board at 3.15 amps)
26 HKSW P3 pin 3
Hookswitch Digital Input
Active = Ground. Inactive = Open
25 INP2 P3 pin 5
Digital Input 2
28 SWA+ P3 pin 6
Switched A+ (DC Power) Output
8 GND P4 pin 1
Chassis ground (fused on PK Board at 3-amps)
30 DGPS_DATA P4 pin 4
GPS Receiver Module DGPS Correction Data Serial Data
Input (NMEA-Formatted)
4 EXTRX P4 pin 5
External Rx Audio Output (for non-CAN based radio)
9 EXTMOD P4 pin 7
External Tx Audio Input (for non-CAN based radio)
3 SDATA P4 pin 8
In a front-mount M5300/M7300 radio installation, this pin
for the siren/PA interface is the siren serial data output
(open-collector/open-drain) from the radio’s mounted
(local) CH-721. It serially transfers siren and light control
data from the CH-721 to a connected third-party siren
and light system (e.g., Federal Signal SS2000
SmartSiren). Data rate = 1200 bps. Connects to
SS2000’s DB-9 pin 3. For a remote-mount radio installa-
tion, see footnote
5
.
5 FDISC P4 pin 9
Buffered Discriminator Audio
13 ALO P4 pin 10
Audio Ground/Reference
(fused on radio’s PK Board at 3.15 amps)
5
In a remote-mount M5300/M7300 mobile radio installation, this pin on the radio’s DB-44 connector should not be used. It
is not functional. Instead, use the respective pin on the CH-721 Option Cable’s female DB-25 pin connector. See Section
11.3 for additional information.