Citizen Systems CBM-270 Benutzerhandbuch

CBM-270 User’s Manual

(1) Input signal level

All the input signals are at the TTL level.

High level --- 2.0 V at minimum

Low level --- 0.8 V at maximum

(2) Output signal level

All the output signals are at the TTL level.

High level --- 2.4 V at minimum

Low level --- 0.4 V at maximum

(3) Input and output conditions

The STROBE and RESET input signals are pulled up at 10k

Ω

, and the other input signals at 50k

Ω

,

respectively.

[Printer Side]

[Host Side]

All the output signals are pulled up at 50k

Ω

.

[Printer Side]

[Host Side]

Timing Chart
Data Input and Print Timings