Harris M5300 - Table 13-1: M5300;M7300 Option Cable CA-012349-001 Interconnections

MM-015371-001, Rev. C
61
P3, the cable’s 6-pin connector, is a connector for basics accessories (e.g., hookswitch, etc.).
P4, the cable’s 25-pin D-subminiature (DB-25) connector, provides audio and data connections for
connections to optional equipment.
P5, the cable’s 9-pin D-subminiature (DB-9) connector, is not
used in motorcycle applications of the
radio. In standard mobile applications of the radio, this 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.
Table 13-1: 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
21 SPKR2
22 SPKR2
P2 pin 2
Speaker Audio Outputs 1 and 2. These speaker outputs are
not
used in a motorcycle installation, since the audio amplifier
in the CH-721 control head drives the external speaker.
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 Serial Data. This connection is not
used in a motorcycle
installation.
4 EXTRX P4 pin 5
External Rx Audio Output. This connection is not
used in a
motorcycle installation.
9 EXTMOD P4 pin 7
External Tx Audio Input. This connection is not
used in a
motorcycle installation.
3 SDATA P4 pin 8
In a motorcycle installation (i.e., remote-mount radio), this pin
on the radio’s DB-44 connector is not
functional. For siren/PA
interfacing, use the respective pins on the CH-721 Option
Cable’s female DB-25 connector. See Section 13.5 for
addition
al information.
5 FDISC P4 pin 9
Buffered Discriminator Audio. This connection is not
used in a
motorcycle installation.
13 ALO P4 pin 10
A
udio Ground/Reference (fused on radio’s PK Board at
3.15 amps).
12 MICHI P4 pin 11
1 EXTALO P4 pin 12
In a motorcycle installation (i.e., remote-mount radio), this
MICHI input is not
functional. For siren/PA interfacing, use
the respective pins on the CH-721 Option Cable’s female
DB-25 connector. See Section 13.5 for additional information.
14 VOLHI P4 pin 13
Volume High. This connection is not
used in a motorcycle
installation.
15 CTLON P4 pin 14 Control On Digital Output.