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Prism TM450 Installation Guide for JBus 1708 and 1939  

Teletrac Inc. 

1634-0300 00 

Page 2 

Differences between the TM450 and the TM2J 

 

The TM450 and the TM2J are very similar in basic appearance and basic functionality.  There 
are two main differences; 
 

1)

 

The TM450 has FAKRA connectors for the antenna.  This makes perfect antenna 
connections very simple and more reliable –no more lose or too tight connectors-.  
The connector features a locking mechanism that guarantees perfect connection 
every time. 

 

2)

 

The on-board connectors are Micro Fit.  This is a smaller pitch connector, it frees up 
valuable board space inside the TM450. The actual interface into the TM450 
connector is exactly the same.  The DB9 (MDT port) and DB15 (JBUS PORT

) is 

backwards compatible.  No tools are ever required. 

 

 

 
 

 
 

 

 
 

Summary of Contents for Prism TM450

Page 1: ...Prism TM450 Installation Guide For JBus 1708 and 1939 Document Number 1624 0301 00 Date May 5 2010...

Page 2: ...TM2J 2 Installation 3 Main Power Connections 4 Alternate Power Input 4 Antenna 5 Antenna Placement 5 Hidden Antenna Placement 5 Testing the Installation 6 TM450 Hardware Information 8 Firmware Version...

Page 3: ...pproved Diesel trucks starting in 1998 The TM450 supports 1708 and 1939 with its internal decoder There is no need of mechanical configuration to select one protocol over the other The communication s...

Page 4: ...he antenna This makes perfect antenna connections very simple and more reliable no more lose or too tight connectors The connector features a locking mechanism that guarantees perfect connection every...

Page 5: ...Prism TM450 Installation Guide for JBus 1708 and 1939 Teletrac Inc 1634 0300 00 Page 3 Installation...

Page 6: ...ce of power The ignition connection should be made to a source of power other than the Accessory Alternate Power Input In situations where the JBUS does not have power an alternate power input is supp...

Page 7: ...is angled at less than 60 degrees Do not use on vehicles with racks that overhang the windshield Approved Locations On the top of a flat roof with no obstructions Attached to an approved extension to...

Page 8: ...ce all power and antenna connections are complete make sure the Transceiver is working properly The easiest way to do this is using an MDT 955 Press Control 1 to Display Radio Status Confirm Registrat...

Page 9: ...Web Reporter see the eClient Training Guide or Help Topics in eClient about Creating Reports WARNINGS Installation is NOT complete unless all 3 of the above described steps are completed Testing with...

Page 10: ...und GND Black 6 Positive Battery VBATT Red View looking in to connector Figure 1 Accessory Connector CON2 1 Microphone input MIC IN 2 Normally high switch input INHIGH 3 Ground GND 4 Emergency switch...

Page 11: ...12 6 Smartnav switch input TSW NA 7 Relay driver output RELAY1 Blue 8 SAE J1708 bus A signal J1708A Yellow twisted with Blue 9 CAN bus L signal CANL Brown twisted with Red 10 Microphone input MIC IN...

Page 12: ...ny ______________ Vehicle Number ______________ VIN Number ________________________ Make and Model _______________Year ________License Plates___________ Teletrac Options Installed JBUS OBDII PTO MDT e...

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