Table of Contents
Advertisement
4.7
MODES OF OPERATION
The Ap1200 has two operating modes, when not actually printing:
1. Idle Mode: ready to accept data, but no data are in the buffer awaiting printing, and the
printer motor is not running;
2. Spooling Mode: active, but storing data for later printing.
No hardware power switch is fitted.
Idle Mode
In idle mode, the printer is ready to receive data, which will be printed as soon as complete lines or
graphics patterns are decoded. It responds to the paper feed button in the normal way, and can also
produce a demonstration print.
Spooling Mode
In spooling mode, data are received and stored, but not printed. This is useful when printing needs to
be suppressed during data transfer (for example in mobile radio systems); or when the paper needs
to be changed and the buffer contains data.
The buffer will enter spooling mode by a command from the host.
The spooling mode is exited by a command from the host; or, the paper feed button being double-
clicked (see below). Any stored data will then be printed out.
4.8
USAGE RESTRICTIONS
The Ap1200 is not intended for continuous printing use. The ELM205-ST mechanism used in the
printer imposes certain voltage dependent limitations on continuous printing. The following table
gives the maximum operating duty cycle at a selection of operating voltages.
Note that the maximum period for continuous printing is 30 seconds at any voltage.
For example, at 6.0 volts, the duty cycle must be 40% or less. Therefore, after printing for 30
seconds, the printer must be allowed to rest for at least 45 seconds.
Failure to observe this restriction may result in permanent damage to the printer mechanism.
4.9
NOTES ON PRINTER FIRMWARE REVISIONS (INCLUDING FLASH)
Able Systems reserves the right to modify and improve the firmware in its printer products at any time.
Whilst every effort is made to ensure backward compatibility, no guarantee in this respect is given or
implied.
The Ap1200 printer contains a flash-reprogramable microcontroller. This allows firmware upgrades
and font manipulation under customer control.
ABLE Systems has produced various PC based utilities to allow easy font generation and re-
programming. Refer to the factory for more information if required.
Maximum
Voltage
Duty Cycle %
5.0
60
6.0
40
7.0
30
8.0
20
Ap1200 Users' Guide Page 8 of 14
Advertisement
Table of Contents
