Zebra EM 220 Servisní příručka stáhnout pdf (Strana 32)

Rev. 1.04

- 32 -

EM 220

Mobile Printer Service Manual

3) Serial / USB signal descriptions

Pin No. Signal name Direction Function

1 GND - Ground

2 TXD Output Transmit data

3 RXD Input Receive data

4 nRTS Output

Request to send

Set high when printer is ready to accept a

command or data

5 nCTS Input Clear to send from host

6 GND - Ground

7 GND - Ground

8 D + - Differential data line

9 D - - Differential data line

10 GND - Ground

4) Serial / USB output connector

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 52 53

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Zebra EM 220 Servisní příručka Strana 32