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Page Updated 1 May 2006

Discuss CQM6000 Connections
  

CQM6000 Connections

The Stornophone 6000 series was designed to be very versatile in the ways that the external hardware could be connected to the main radio chassis. With a wide variety of control heads, junction boxes and accessories that could be installed in both local and remote configurations.
  
 


Chassis Connectors

The standard Storno CQM6000 radio chassis had 3 connectors. At the front was a 13 pin Molex style socket which mated with the control box or handset in installations where the control box was mounted on the front of the radio. Some of these pins were not used if their functions were not required, for example the standard CB6001 control box did not use the loudspeaker or PTT pins. Radios which only used the remote control box would be fitted with a front blanking panel.

The rear connectors were a BNC socket for the antenna and a 25 pin male D-type connector for DC supply and all other functions. The BNC socket was slightly shortened and was fitted with a collet to assist mating with the antenna connector built into the quick release versions of the mounting bracket. With the collet removed the socket was compatible with a standard BNC connector. The 25 pin connector would normally be provided with a cable leading to a junction box to which a range of accessories could be attached.



Connector pinouts

The following table details the various functions available and their associated pins at the front and rear connectors.
Type
Function
J901
Rear
J903
Front
Power
 Battery +12V
1,2,14
1
Battery Ground
12,13,25
2
Speaker
 Loudspeaker +
23
10
Loudspeaker -
24
11
Tx Key
PTT sense
4
12
Microphone
 Mic Hi
19
9
Mic/ptt/aux/sense Common
Signal Ground
18
13
Aux supply
+5V
9
3
Control data lines
 H-BUS Direction
6
4
H-BUS Data
7
5
H-BUS Service Request
5
6
On/Off Reset
8
7
Aux audio
 Processed Rx out (Handset audio)
11
8
Rx Line level out
10
-
Tx Line level in
22
-
Outputs
 Car radio mute
16
-
Car horn alarm
17
-
Inputs
 Ignition input (+12V)
15
-
Transportable sense
3
-
Tonekey/Emergency sense
20
-
Hook switch sense
21
-

Front connection

J903 was designed to connect to the control box but in some special systems additional connections were brought out through the front such as ports for serial data, encryption keyloader, etc. These would typically be connected using PCB flex passing over the top of the Molex connector and terminating onto a daughter board inside the radio.

Rear connection

J901 would connect to a 25 pin D-type female connector. There were two main versions, chosen according to the type of installation.



The connector on the left had a larger housing with separate entry glands for the DC supply cable and multiway cable and came with a gasket to make a water resistant seal to the chassis. The connector on the right had a low profile housing allowing entry of a single multiway cable at right angles to the housing, this arrangement could also be used with the quick release radio mounting bracket.

Although the actual connector was the widely available industry standard type it should be noted when selecting alternatives that some versions of the housing may prevent the connector from fully mating. If alternatives are used it should be checked that the housing does not obstruct the metal front of the connector, also the retaining screw threads are not the same as those commonly found on standard thumb-screw types.


Junction boxes

The simplest junction box formed part of the CC6003 cable assembly shown below. The diagram shows how to connect the power and basic accessories, the pinout arrangement for the loudspeaker and standard PTT/Microphone was compatible with all standard junction box variants. It would also be possible to wire these accessories directly to a connector without using a junction box, the diode was not required when using only one microphone where Mic Ground would be connected to Signal Ground.


The larger more sophisticated junction boxes such as the JB6002 shown below allowed connection of additional accessories and it was possible to pick and mix from a wide variety of standard cable assemblies of varying length. This provided great flexibility during installation regarding the relative locations of the radio, controls, accessories and power connection. Complex system arrangements including multiple control points, additional speakers, hands-free operation, etc. were easily accomodated.


The Control Box when used in a remote installation could also be used as a junction box so that the accessories could be wired directly through the cable glands at the rear, however this had the disadvantage that the connectors had to be fitted after installing the cables and would need to be removed again if replacement was ever required.


  

 

 
 
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