Citizen Systems iDP-562 user manual Citizen

iDP-562 User’s Manual

5.5 Current Loop and TTL
5.5.1 Interface Loop
(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.

CITIZEN 16