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SB-10 USER'S MANUAL

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Table H-2. Connector sianals for the serial interface.<br />

PIN SIGNAL NAME DIRECTION FUNCTION<br />

1 F-GND Frame ground.<br />

3 TXD . .-<br />

OUT The TXD ftransmit data) sianal<br />

carries data from the printer<br />

3 RXD IN The RXD (receive data) signal<br />

carries data to the printer<br />

A FITS OUT The FITS (reauest to send)<br />

I sional is on when the minter I<br />

isready to receive data.<br />

5 CTS IN The CTS (clear to send) signal<br />

is on when the computer is<br />

ready to send data.<br />

6 DSR IN This signal line is used<br />

to check if the printer<br />

7 S-GND<br />

6 DCD<br />

9 TTY TXDR<br />

<strong>10</strong> TTY TXD<br />

11 REV-CH<br />

12 N/C<br />

13 S-GND<br />

14-16 N/C<br />

17 TTY TXDR<br />

18 TTY RXDR<br />

19 TTY RXD<br />

20 DTR<br />

21-22 N/C<br />

23 TTY RXDR<br />

,‘:!<br />

IN<br />

OUT<br />

OUT<br />

IN<br />

OUT<br />

is ready for operation.<br />

Signal ground.<br />

When the DCD (data carrier<br />

detect) signal is on,, the<br />

receive signal is wrthin a<br />

specified range.<br />

This pin indicates the<br />

signal line return of 20mA<br />

current loop for data transmission.<br />

Indicates the signal line of<br />

20mA current loop for data<br />

transmission.<br />

The REV-CH (reverse channel) pin<br />

is the signal line for busy<br />

protocols. This pin goes off<br />

when the buffer fills, and on<br />

when the printer is ready to<br />

receive data.<br />

Unused.<br />

Signal ground.<br />

Unused.<br />

Indicates the signal line<br />

return of the 20mA current<br />

loop for data transmission.<br />

Indicates the signal line<br />

return of the 20mA current<br />

loop for data reception.<br />

Indicates the signal line<br />

of the 20mA current loop for<br />

data reception.<br />

The DTR (data terminal ready)<br />

Din is on when the minter is<br />

ready to receive data.<br />

Unused.<br />

Indicates the signal line<br />

return of the 20mA current<br />

Indicates the signal line of the<br />

I

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