l Active 20 Hz Scan: 55 mA
l Serial (RS-232/RS-485): Active + 25 mA
l Ethernet Power Requirements:
o
Ethernet 1 Minute: Active + 1 mA
o
Ethernet Idle: Active + 4 mA
o
Ethernet Link: Active + 47 mA
Vehicle Power Connection: When primary power is pulled from the vehicle power system, a
second power supply OR charge regulator may be required to overcome the voltage drop at
vehicle startup.
10.4 Power output specifications
10.4.1 System Power Out Limits (when powered with 12
Vdc)
Temperature (°C) Current Limit
1
(A)
–40° 4.53
20° 3.00
70° 1.83
85° 1.56
1
Limited by self-resetting thermal fuse
10.4.2 12V and SW12V Power Output Terminals
12V, SW12-1, and SW12-2: Provide unregulated 12 Vdc power with voltage equal to the Power
Input supply voltage. These are disabled when operating on USB power only. The 12V terminal is
limited to the current shown in the previous table.
SW12-1 and SW12-2 can be independently set to battery voltage under program control. Each
SW12 terminal has a thermal-fuse hold-current limited to the values in the following table.
SW12 current limits
Temperature (°C) Current Limit
1
(mA)
–40° 1310
0° 1004
20° 900
10. Specifications 164
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