HBM SomatXR CX22B-R, Руководство по эксплуатации, Страница: 22 / 86

Connections and displays
22
A4722-1.0 HBM: public
CX22B-R
4.5 USB 2.0 interfaces
Devices such as a keyboard, mouse, monitor, printer, as
well as GPS sensors or data memory such as a USB
flash drive, can be connected.
Tips for use are available for the connection of GPS sen­
sors via USB.
Notice
If you have to install device drivers, please note Section
12.4.
4.6 Digital inputs and outputs
Three inputs and three outputs are available at connector
X6 (ODU 14 pin). The inputs and outputs are TTL-com­
patible (-0.5 to 5.5V)
.
Inputs
The level for the inputs is 5 volts in the open state
(HIGH), as it is pulled up to HIGH by a pull-up resistor
(active LOW). The maximum LOW level is 0.7 volts and
the minimum HIGH level is 4 volts.
Outputs
The level for the outputs is 5 volts (HIGH), when the cor­
responding output is set, otherwise 0 volts (LOW). The
line lengths at the outputs must not exceed 3 m. Maxi­
mum output current is 1 mA.