INSTALLATION
E-TRIP
®
Version: 2004/08/16 Order No.: 9526
Page 10
3.4 Description of signals
Chamber A:
A1 :
Vehicle on-board supply system
+9V ...+36V
A2 Light:
for switching on the OBU through
the vehicle light.
A3 Ignition:
for switching on the OBU through
the ignition.
A5 GND:
Vehicle on-board supply system:
ground
Chamber B:
B1 Speed Pulse:
Available speed signal in sine-
shaped or rectangular form.
V
L max.
= 3.0V
V
H min.
= 4.5V (tolerant up to 40V)
NOTE: If the speed is metered via input B1, then input
B4 shall be connected with a respective RPM
sensor or connected to ground.
B4 RPM
Alternatively to bus J1708, the
OBU can meter the engine speed
also via the pulse output of the
RPM sensor.
B6 SAE_J1708_A:
SAE J1708 Interface, Line A
B7 SAE_J1708_GND: SAE J1708 Interface, GND
B8 SAE_J1708_B:
SAE J1708 Interface, Line B
B6 – B8: see subchapter 3.4.1
Chamber C:
C1 DIGI_IN_1:
Input: +9V ... +36V DC
C1 – C4: see subchapter 3.4.2
C2 DIGI_IN_2:
Input: +9V ... +36V DC
C3 DIGI_IN_3:
Input: +9V ... +36V DC
C4 DIGI_IN_4:
Input: +9V ... +36V DC
C5 ALARM_A:
Relais output
C6 ALARM_B:
C5 – C6: see subchapter 3.4.3
C7 ARO_A:
Auxiliary Relay Output
C8 ARO_B:
C7 – C8: see subchapter 3.4.3.2
Chamber D:
D1 TEMP_Sens_A: Input of temperature sensor
D2 TEMP_Sens_B: D1 – D2: see subchapter 3.4.4
D3 NMEA_TxD:
RS232 - port for connection of external
navigation devices with NMEA input;
see subchapter 3.4.5
D4 GND:
Ground NMEA output resp.
PIN 5 D-SUB9 ORBCOMM
D5 Aux_Ser_TxD: PIN 3 D-SUB9 ORBCOMM
D6 Aux_Ser_RxD: PIN 2 D-SUB9 ORBCOMM
D7 Aux_Ser_DSR: PIN 6 D-SUB9 ORBCOMM
D8 Aux_Ser_DTR: PIN 4 D-SUB9 ORBCOMM
D4 – D8: see subchapter 3.4.6
