user manual

INSTALLATION MTM5400 Mobile Terminal Installation Manual 57

Radios with Data Expansion Head Enhanced

To use a junction box with one of the MTM5400 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.

Standard Radios without Data Expansion Head Enhanced

For standard MTM5400 mobile terminals without a Data Expansion Head Enhanced, the jumper

between pins 6 and 15 of the junction box (connector 5) should be removed.

Table 8 Jumper on Accessory Connector

MTM5400 Mobile Terminal

Fit Jumper Pins 6-15? Use Junction Box RS232 PEI?

With Data Expansion Head Enhanced Yes

Use the Data Expansion Head

Enhanced 9-pin PEI instead.

Without Data Expansion Head Enhanced No Yes