Citizen Systems 3541, iDP-3540 user manual 21/48

Page 21

iDP-3540/41 User’s Manual

8-3-2. Electrical Characteristics
a) Input Signal Level
All input signals are TTL level.
“HIGH” level …. 2.0V Min.
“LOW” Level …. 0.8V Max.
b) Output Signal Level
“HIGH” level …. 2.4V Min.
“LOW” Level …. 0.4V Max.
c) Input / Output Conditions
All of the input signals are pulled up by 3.3K ohms.
[Printer Side]	[Host Side]

7406 or equivalent

All of the output signals are pulled up by 3.3K ohms.

7406 or equivalent

CITIZEN

21/48

Image 21

Contents User’s Manual EMC LVDImportant Safety Instructions Contents Slide Switch Setting Serial interface specifications only Introduction Basic Specifications Specifications Citizen Block Diagram External Appearance and parts Description 12/48 13/48 Preparation IDP-3540/41 User’s Manual Ribbon Cassette Installation 16/48 17/48 Input Buffer Back-up Input Buffer Back-up FunctionParallel Interface Fault DataACK 21/48 22/48 Serial Interface DTR TTL25/48 26/48 27/48 8V Busy TD Mark = -8V +8V Ready Space = +8V Current on Ready External Output Function Selection IDP-3540/41 User’s Manual RS-422A type only Function Print Control Functions FF0CH SO0EHSI0FH CR0DH LF0AHRS1EH 37/48 38/48 39/48 40/48 DEFAULT=20 42/48 Initial Setting General Cautions MaintenanceCharacter Code Tables IDP-3540/41 User’s Manual Individual Country Character Codes External Dimensions IDP-3540/41 User’s Manual Model iDP3541