Specifications

2.3 Power Supply
The power supply of the Java Box Terminal has to be a single voltage source of POWER 6V-30V
capable of providing a peak during an active transmission. The Java Box Terminal is protected from
supply reversal voltage. An internal fuse ensures an electrical safety according to EN60950. This fuse
is not removable. A fast acting fuse 0.8A with melting is necessary to use with the Java Box Terminal
at a 24V power supply system for vehicles. The power supply must be compliant with the EN60950
guidelines.
Pin Signal name
Direction
Use
1 POWER
In
Input Power supply range 6-30V
2 IGNITION
In
Power on console connected to input 12V
3 GND
-
Ground
4 RESET_N
Out
Output notify if modem ON
Table 2: Pin assignment of the plug for power supply and relay
Figure 9: Male 4-pole plug for power supply.
2.3.1 Supply voltage requirements
The DC power supply must be connected to the POWER input:
• Input voltage range 6 - 30V DC
• Nominal Voltage 12V DC
• Power Supply current rating: min. 1,2A @12V
• Power Supply ripple: max. 120mV
• Input current in idle mode: 20mA @ 12V
• Input average current in communication mode: 100mA @ 12V
Java Box Terminal Hardware Interface Description
Released
12
4
3
Pin assignment
1 – Power
2 – IGNITION
3 – GND
4 – RESET_N