18
Opticon
PX-20
Specifications Manual
10. Cable and Connector
10.1. USB Cable
A dedicated USB cable is provided. This cable has a USB-A connector on one end
and a micro-USB B connector on the other end.
10.2. Connector
Contact
Number
Signal Name
1
VCC
2
-DATA
3
+DATA
4
Ext trig
5
GND
Figure 2: USB Micro-B connector
10.3. External trigger
It is possible to trigger the PX-20’s barcode reader externally via a pin in the USB
connector. The trigger is active low, edge triggered, enabled by grounding pin 4 in the
USB connector.