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5 current loop and ttl, 1 interface circuit – Citizen Systems iDP-562 User Manual

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iDP-562 User’s Manual

CITIZEN

11

5.5 Current Loop and TTL

5.5.1 Interface Circuit

(a)

Current Loop

Input (RD)

Printer side

Computer side

Output (DTR)

Note:

Resistance should be set so that Current Loop is restricted within 10 ~ 20 mA.

(b)

TTL

Input (RD)

Printer side

Computer side

Equivalent to 7407

Output (DTR FAULT)

Note:

Output is open collector.

See also other documents in the category Citizen Systems Printers: