User's Manual

7 BoltAIR 20-31 interfaces BoltAIR 20-31 User's manual EN
7.1.3 Odometer specifications
7.1.3.1 How the odometer input works
The odometer input is a digital interface that counts the input pulses and detect with them the speed of a
vehicle.
The input, available on pins ODOM+ and ODOM-, is optically insulated and has a programmable
threshold level. The programmable input threshold allows you to configure the best threshold value for
your application; the input can be seen as a trigger that counts the input pulses and deletes any
spurious.
The ODOM+ input is compared with a programmable reference voltage threshold:
l
If the input signal is higher than the programmed high threshold, the logic input is ‘1’
l
If the input signal is lower than the programmed low threshold, the logic input is ‘0’.
7.1.3.2 Odometer input electrical specifications
The table below shows the electrical specifications odometer input:
Characteristic Value
Voltage Range Minimum: 0V
Maximum: 32V
Maximum Input Frequency 10 kHz
7.1.3.3 ODO: Odometer input connector specifications
Connector Layout:
Connector Specifications:
l
Standard 9-Pin D-Sub (socket)
l
Gender: Female
Mating Connector Specifications:
l
Standard 9-Pin D-Sub (plug)
l
Gender: Male
Connector Pinout (pins not listed are not connected):
Pin # Signal Type Description
1 ODOM+ I Odometer positive input
3 ODOM- I Odometer negative input
42 / 60 © 2022 Eurotech SpA - Via Fratelli Solari 3/A - 33020 AMARO (UD) - Italy
Code: BTAIR-20-31-11_MAN_EN_1-3
Revision: 1-3 2022.07.28