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GEK-36150
Operating Characteristics
SECTION 6
TermiNet PRINTER OPERATING CHARACTERISTICS
The purpose of this section is to provide application
specialists
with
detailed
characteristics
of
the
TermiNet
Printers
to
assist
in
implementing
communications between
TermiNet Printers and
other printers and computer systems. Because this
section is technical in nature, the information may be
too complex for the experience of some operators.
NOTE
For
detailed
information on
referenced
jumpers in this section, refer to Service
Manuals GEH-2185 for the TermiNet 300
Printer and GEK-36105 for the TermiNet
1200 Printer.
DATA TRANSMISSION AND RECEPTION
The TermiNet Printer is an asynchronous transmitting
or receiving device. All transmitting or receiving
between the standard TermiNet Printer and any other
device is carried on in serial form.
INTERFACE
The electrical interface between a standard TermiNet
Printer
and
a
communications
network
is
in
accordance with RS-232C. The TermiNet Printer can
be
interfaced
in various ways if the interface
specifications are met. The following describes the
standard and optional interface circuits.
INTERFACE CONNECTIONS (RS-232)
PIN
NO.
CIRCUIT
DESCRIPTION
COMMENTS
1
AA
Protective Ground
Tied to machine frame and enclosure.
2
BA*
Transmitted Data
3
BB
Received Data
4
CA*
Request to Send
When on, turns on transmitter carrier of data set
arranged for line control half duplex operation.
When off, holds half duplex data sets in RECEIVE.
Turned on by:
(a)
On Line button
(b)
Line Control character received even if
in Standby**
(c)
D LE? received**
Turned off by:
(a)
Low voltage
(b)
EQT recognized (may be strapped to have
no effect)
*Printer to Data Set.
Continued
**When Line Control Option is included.
6-1
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