Installation
Precautions
1. The printer is to be used free-standing and should be
placed on a stable surface providing easy access to the
control panel and to the paper well when the lid is open.
2. Do not site the printer in an excessively hot or humid
location. Exposure to grease, dust, metal swarf or liquids is
best avoided.
3. When using the power adaptor avoid using a mains outlet
which also supplies heavy switching machinery since a
noisy supply may impair printer operation.
4. Ensure that the adaptor provides the correct operating
voltage. (See specification at the end of this instruction
leaflet).
5. Care must be taken to ensure that any power adaptor used
meets with national safety requirements and has the
correct output voltage and polarity. Recommendation is
given for
RS
stock no. 244-654.
6. Do not remove paper by pulling it from the back of the
mechanism and do not pull excessive lengths through the
top of the mechanism. Either of these operations may
cause paper to tear and jam the mechanism.
Default settings
The printer is supplied with the following default settings:
Data bits
8
Parity
None
Baud rate
9600
Character set
UK
Print mode
Text
Auto-off
5 min
Emulation
Standard
DTR
Normal
Interface
Serial
Mechanism
As applicable
Default settings can be restored by pressing both the feed and
programme switches together at power up. Releasing the feed
button before the programme button will set original defaults.
Self test
To perform a self test press the power on and feed switch
simultaneously and keep depressed until the test starts. This
will check all the mechanics, and a large proportion of the
software and hardware without the need for connection to a
host. The software issue is printed in double height, double
width text, followed by the character set in normal text. Below
this are listed the current settings of the user selectable
options. If the settings are correct for your host, you are ready
to connect the printer to your system. The self test will be
repeated until the power is switched off. Normal operation is
resumed after power on.
Interface connection
The printers are available with an RS232 serial interface.
The interface type is printed on the self test slip.
The connector is a 25-way D socket for serial interface.
Programme mode
On the front of the unit there is a power on indicator and four
switches which are labelled on the panel from left to right,
RS
programme, paper feed, on and off.
If the programme switch is pressed at power up (ie. programme
switch and power on switch together) then the printer will go
into set up mode and print the current parameter status.
Example: Number of data bits: 8-bit data.
The power on indicator will flash every second to indicate
programme mode.
Each time the feed switch is pressed and released the next
printer parameter is printed. Pressing the programme switch
will cause the status of that parameter to change in the
sequence shown. Each status table rotates so 300 baud
follows on from 19200 baud and so on.
Once the correct status has been selected then both the
programme switch and the feed switch should be pressed
simultaneously to update the printer status. Note that this need
only be done when all parameters that need changing have
been selected. If no switches are pressed for 15 seconds the
set up mode is automatically terminated without changing the
original parameters.
Parameter (FEED switch)
Status (PROGRAMME switch)
1.
Number of data bits
8-bit data
7-bit data
2.
Serial parity
No parity
Odd parity
Even parity
3.
Serial baud rate
300 baud
600 baud
1200 baud
2400 baud
4800 baud
9600 baud
19200 baud
4.
Character set
USA
ITALY
FRANCE
SPAIN
GERMANY
JAPAN
ENGLAND
NORWAY
DENMARK I DENMARK II
SWEDEN
5.
Print mode
TEXT (normal print)
DATA (inverted print)
Portable Battery Powered Printers
Stock No. 244-632 (24 columns @2.5 lines per second)
Stock No. 244-648 (40 columns @1.7 lines per second)
Figure 1. Data connector
9V
power
supply
RS
1
0
Figure 2.
Power
LED
Set up
Paper
feed
ON
OFF
