Axiohm A758 Instruction Manual Page 98

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A758 Owner’s Guide Chapter 6: Communiction Interface
September 1999 92
The next table shows that with no delay between lines, the transmit time is much
less than the process time, allowing the printer to print at full speed.
No Delay after Each Line
Characters/Line Lines/Receipt Transmit Time
(19.2 K Baud)
Process Time*
20 20 0.2 Seconds 0.5 Seconds
20 40 0.4 Seconds 1.0 Seconds
44 20 0.44 Seconds 0.5 Seconds
44 40 0.88 Seconds 1.0 Seconds
RS-232 Communications
The A758 offers an industry standard RS-232 serial point-to-point interface, with
options available to the user.
Options that may be set through the Configuration Menu are:
The baud rate of 115200, 57600, 38400, 19200, 9600, 4800, 2400, or 1200 baud
The number of data bits to seven or eight
The number of stop bits to one or two
Enable or disable parity
The flow control to software (XON/XOFF) or Hardware (DTR/DSR)
Set the printer to ignore data errors or print a “?” upon encountering an error
RS-232 Interface Timing
Receiving data, DTR/DSR or XON/XOFF selected:
[DTR MARK] - Between power on and ready to accept data.
- In an error state.
- Remaining space in the 4K buffer falls below 256 bytes. *
[DTR SPACE] - When ready to accept data.
- Remaining space in the 4K buffer rises above 512 bytes. **
[XON sent] - When ready to accept data after power on.
- Remaining space in the 4K buffer rises above 512 bytes. **
[XOFF sent] - In an error state.
- Remaining space in the 4K buffer falls below 256 bytes*
* - 10 bytes in line mode.
** - 20 bytes in line mode.
Sending data (status):
In DTR/DSR mode, data is sent only when DSR is SPACE.
In XON/XOFF mode, DSR state is ignored.
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