Epson TM-U950 Technical Manual

Rev. A Features and General Specifications 1-23
TM-U950/U950P Technical Manual
The following illustrates an example serial interface connection:
Parallel interface
(Bidirectional parallel interface in accordance with the IEEE 1284 nibble/byte modes).
Copyright © 1994 by the Institute of Electrical and Electronic Engineers, Inc.
Compatibility mode
(Data transmission from host to printer: Centronics compatible)
Data transmission: 8-bit parallel
Synchronization: Externally supplied nStrobe signals
Handshaking: nAck and Busy signals
Signal levels: TTL compatible
Connector: 57RE-40360-830E(DDK) or equivalent (IEEE 1284 Type B)
Reverse mode
(Data Transmission from printer to host)
The STATUS data transmission from the printer to the host is accomplished in the Nibble or
Byte mode.
This mode allows data transmission from the asynchronous printer under the control of the
host. Data transmission in the Nibble mode are made via the existing control lines in units of
four bits (Nibble). In the Byte mode, data transmission is accomplished by making the 8-bits
data lines bidirectional.
Neither mode can operate at the same time as the compatibility mode, so switching is always
required.
The 1284 Nibble/Byte modes may be subject to change without notice.
Figure 1-16. Serial Interface Connection Example
Host (DTE example 8251)
TXD
DSR
CTS
RXD
DTR
FG
SG
RXD
DTR
RTS
TXD
DSR
FG
SG
Printer
When connected to a DCE-type device, data should not be
sent non-stop (without handshake).
DTE = Data Terminal Equipment
DCE = Data Circuit Terminating Equipment
CONFIDENTIAL

Epson TM-U950 Specifications

General

Print speed	18.6 ips
Character size	1.3 x 3.1 mm
Print technology	Dot matrix
Paper dimensions	210 x 297 mm
Dimensions (WxDxH)	251 x 298 x 194.5 mm
Electromagnetic compatibility	VCCI, FCC, CE
Safety	UL, CSA
Country of origin	China
Mean time between failures (MTBF)	180000 h
Serial interface	Yes
Standard interfaces	RS-232C
Weight (imperial)	12.3 lbs
Pallet width	1200 mm
Pallet height	1000 mm
Pallet length (UK)	2250 mm
Quantity per pallet	24 pc(s)
Quantity per pallet (UK)	36 pc(s)
Quantity per pallet layer	4 pc(s)
Harmonized System (HS) code	84433210
Quantity per pallet layer (UK)	6 pc(s)
Package depth	425 mm
Package width	360 mm
Package height	330 mm
Package weight	7196 g
Quantity per pack	1 pc(s)

Weight and Dimensions

Depth	298 mm
Width	186 mm
Height	195 mm