beautypg.com

Citizen Systems iDP-3550 User Manual

Page 40

background image

9.3.2

Electrical Characteristics

(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

All the input signals are pulled up with a 3.3 k

resistor.

[Printer Side]

[Host Side]

All the output signals are pulled up with a 3.3k

resistor.

[Printer Side]

[Host Side]

Twisted Pair Wire

Twisted Pair Wire