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for printer GPT-467x and all controller types
The USB protocol is part of the GeBE bootloader and the GeBE rmware.
It corresponds to the USB specication V2.0 for full speed. The USB interface is implemented as a bidirectional USB
printer class. The operating mode is "Self Powered".
Suspend / resume operation is not supported.
The USB stack was expanded by a vendor-specic command of a hardware RESET, which acts like unplugging and
plugging in the USB connector. In addition, the flags of the GET port status message printer status can be patched. GeBE
provides an SDK for operation, which makes access to the USB interface just as easy as with the serial RS232 interface.
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The USB input is protected against overvoltage and overcurrent.
F50 : resetable PTC Polyfuse 200 mA/9 V
V50 : varistor
D50: USB protection element SRV05-4
IEC 61000-4-2 (ESD): Air 15 kV, contact 8 kV
IEC 61000-4-4 (EFT): 40 A, 5/50 ns
IEC 61000-4-5 (Surge): 12 A, 8/20 µs
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