Specifications

Page 1-2 RM2151 - GENERAL INFORMATION
1.3 Printer
Printer Configuration
The H1252A/B Hard Copy Printer should be connected to the radiotelex/DSC modem, and/or to the message
terminal (or PC).
Connecting the H1252A/B printer to the Radiotelex/DSC Modem offers the highest security of hard copy of
incoming messages even if the Message Terminal (or PC) is turned off.
In case both H1252A/B and Message Terminal are turned off, the Radiotelex/DSC Modem will hold the incoming
message in the internal memory for a later outprint of a hard copy.
Printer Description
The H1252A/B Hard-copy Printer is a desk-top type, receive only, dot matrix printer. It is small in size and light
in weight, as it employs an extra small printing head and a built-in microprocessor which controls all the functions.
The basic unit consists of the printer and the paper roll holder. Ordinary roll paper or sprocket paper may be used,
and multiple copies can be made. If an optional variable tractor is mounted, sprocket paper of various widths may
be used.
Switches and indicators
Before making use of the printer, it may be helpful to summarize the switches, levers, and indicators on the printer
and to consider the method of loading paper.
On the front panel of the printer, four switches are located. In addition, three indicator lights show the status of
the printer.
Switches
LINE FEED If you want to advance the paper
one line, press this switch, while
the printer is deselected.
It can also be used to perform a
self test: Press the switch, while
the main switch is turned ON.
FORM FEED To advance the paper to the
next page (Top Of Form), press
this switch, while the printer is
de selected.
TOF To set the first line position on
each page (Top Of Form), de
select the printer and press the
this switch, when the print head
is at the desired position. The
paper must be moved manually.
SELECT Pressing this switch after the printer power is ON, places the printer in deselect mode, not
communicating with the Radiotelex /DSC modem or the Message Terminal. To return to
select mode, simply press the select switch again. Pressing the select switch also stops the
self test if that is in progress.
Indicators
SELECT Works with the SEL switch. Will shine, when the printer is selected (ready to receive data from
the radiotelex system). The indicator is off, when the printer is deselected, and during self test.
ALARM Shine when paper supply is low or spent. Printing stops, until the paper is resupplied.
POWER Shine when the printer’s main power is turned ON.