Installation Manual

Internal Documents Do not Distribute
22 Commercial in Confidence © Hexagon AB
5.17 General Purpose Input Outputs (GPIOs)
A versatile scheme of relaying environmental information from and to the QC1000 unit is
available through the GPIOs.
Item
Min
Typical
Max
Unit
GPIO input voltage to GND
(digital & analog)
0
+Batt
V
GPIO leakage current:
max ±1.5mA @ 24V
max ±1mA @ 12V
GPIO high output voltage to GND
+Batt -1.5
+Batt -0.5
+Batt
V
GPIO low output voltage to GND
0
0.5
1.5
V
GPIO output current to GND
-0.4
0.4
A
5.17.1 Example Installation Reverse Switch
Install Reverse Switch Signal as per diagram below:
5.18 Power Save Mode
For Safety purposes, QC1000 must be powered at all times (direct connection to battery)
when installed on a vehicle. If the unit is powered off e.g. when motor is off, no signal will
broadcasted in the Safety channel making the unit invisible to other CAS systems.
The system has 3 main power modes:
- Normal: Battery supply voltage okay and vehicle is moving
- Power Save Mode: Battery supply voltage drops below threshold