E F Johnson Company 2425M70 Benutzerhandbuch

In both dual control configurations, either control head can be designated as the Master 
and the other as the Slave. The Master control head controls the volume of its internal 
speaker and any external speakers that are connected to the radio's 8-pin accessory 
connector (see installation manual for connection details).

All Viking VM600 mobile radios ship from the factory with the dash-mount control head 
and any remote control heads set as Master, so in all dual-control configurations, one 
control head must be set as the Slave to ensure correct operation.

Control head addressing is set as follows:

1 Power up the mobile radio 

2 Press buttons F3, F4 and F5 at the same time, and release (see Figure 3.4).

3 The display will read "ADDRESS 21" if the control head is configured as the Master, 

or "ADDRESS 22" thru "ADDRESS 27" if the control head is configured as the Slave.

4 Rotate the Select knob to select the appropriate address.

5 After a short time-out period, display will read "CYCLE PWR"

6 Power the radio off and back on, and the configuration will be updated.

Control Head Option Buttons

F1         F2     F3      F4     F5     F6