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2 electrical characteristics – Citizen Systems iDP3420 User Manual

Page 45

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iDP3420/3421/3423 User’s Manual

29

CITIZEN

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 at 3.3 k

.

[Printer Side]

[Host Side]

All the output signals are pulled up at 3.3k

.

[Printer Side]

[Host Side]

Twisted Pair Wire

Twisted Pair Wire