Software Installation - HP LaserJet II Serie Manual De Instrucciones

HP 33440/HP 33449 COMBINED SERVICE MANUAL
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The ROBUST XON configuration determines the method by which the printer
generates XONS (DCIS). If ROBUST XON is ON, an XON is transmitted by the
controller ti the host system when (1) the controller's l-~yte 1/0 buffer has less
than 128 data bytes remaining, (2) the printer is in an on-fine state, and (3) the
printer is not busy. If no data is received within approximately one second, then
additiond XONS are transrnitied at one second intervals until data is received.
If ROBUST XON is OFF, the printer sends a single XON whenever (1) the printer
can accept more data following an XOFF (DC3), (2) the printer returns to an
on-line state, and (3) the printer is not busy. The printer does not send XONS
every second while the printir is on line and ready for more data.
RS-422 Configuration
HP 3344& To select M-422 operation, remove the MO screws securing the plate labeled
"OPTIONW 1/0" on the lower rear section of the printer (see Figure 3-1). Move SW1 on the
Interface PCA from the DOWN to the UP position. When 1/0= SER~ is selected from the
printer's Configuration Menu, RS-422 protocol, rather than W-232, will be in effect.
HP 3344W W-422 communication is selected through the Control Panel's Configuration Menu.
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Figure 3-1. setting HP 33440 switches
Software Installation
Once the printer has been properly instiled and appropriately mbled to its host system, the host
system till need to be configured to communicate with the printer. Following are guidelines for
MS-DOS-based systems. Assuming a serial connection on systems baaed on an operating system
other than MS-DOS, the host must be cotilWrable using the following protocok
Word Size: 8-bit.
Start Bits: 1.
Stop Biti: 1.
Pari~ None.
Handshting Hardware (using DTR) or XON@OFF. (Hardware handsh&ng is not
available using the W-422A configuration.)
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