Citizen CLP-7202e - Page 78

Appendixes 
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72
3. USB Interface
USB Interface
Specifications USB1.1
4. RS-232C loopback test
After connector wiring as shown in the figure, place the printer into self-test mode. The printer
will receive data that has been transmitted by printer itself and the test of receiving and
transmitting data will be performed.
RS-232C loopback test
2 Specifications