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5.4.3 Signal Specifications
Open Collector outputs:
Maximum Open Voltage
40V
Maximum Sink Current
50mA @ 12VDC
Maximum Output Low Voltage:
0.4VDC
Minimum Output High Voltage:
2.4VDC
Input low level voltage:
0…. 1V
Input high level voltage:
3…..12V (typically 3… 5V)
Input pull up to 5V:
21K Ω
5.5
USB Port
The ST1C USB port is compliant as a USB 2.0 full speed host or device and is fitted
with a mini-AB socket. The USB port can be used to:
Connect a USB memory device to reprogram the validator with new firmware
and bill dataset
Connect to a USB port on the machine controller. The validator will enumerate as
a serial port device for compatibility. Please contact your local regional office for
the relevant device drivers.
5.5 USB Mini-A or Mini-B Cable
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