Part Number/Description Cable Connectivity
GKN6272_ External Alarm Relay
and Cable
86
85
87
30
+12V
EXT_ALARM 26
+12V
86
85
87
30
+12V (alternative)
EXT_ALARM 26
+12V
SWB+ 7
4.6.11
Radios with Data Expansion Head Enhanced
To use a junction box with one of the mobile terminals fitted with a Data Expansion Head Enhanced,
always use the 9-pin RS232 port on the Data Expansion Head Enhanced for PEI instead of the 9-pin
RS232 port on the junction box (connector 6). Ensure to fit a jumper between pins 6 and 15 of the
Junction Box (connector 5) for the PEI to operate correctly in this configuration.
4.6.12
Standard Radios without Data Expansion Head Enhanced
For standard mobile terminals without a Data Expansion Head Enhanced, the jumper between pins 6
and 15 of the junction box (connector 5) should be removed.
Mobile Terminal Fit Jumper Pins 6-15? Use Junction Box RS232 PEI?
With Data Expansion Head
Enhanced
Yes No. Use the Data Expansion Head
Enhanced 9-pin PEI instead.
Without Data Expansion Head
Enhanced
No Yes
68015000181-LB
Chapter 4: Radio Installation
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