Zebra Technologies TTP 8000 - Manual (Page 95)

10/19/2009 TTP 8000 Technical Manual P1003638-003
8
Interface
The printer has two interfaces as standard, parallel and USB. There are no selections to be
made, but normally only one interface should be used at a time. The printer may not function
properly if data is received on more than one interface at a time.
Caution • Always use Zebra-approved interface cables. Using a non-approved cable with
the printer may void the FCC and other EMC approvals of the printer.
Caution • If you connect both parallel and USB cables, the voltage that the host computer
outputs on the parallel port may be enough to give signals out on the USB-interface even if
the power of the printer is turned OFF!
These signals can result in the operating system of the host computer detecting the printer
as on and available when it's not.
Another effect of these false signals is that after turning the printer on and off to clear an
error condition, the printer is dead to Windows.
Always disconnect the parallel interface cable when using USB!