HP LaserJet Quick Reference Service Manual Page 101

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Also See for LaserJet
User manual - 449 pages
Manual - 432 pages
Software manual - 418 pages
Serial I/O Specifications
Handshaking
Protocol
Data Format
Parity
Supported
Baud Rates
*LJ 4 and newer: Supports up to 57,600 Baud
**LJ 4000/LJ 5000: Supports up to 115,200 Baud
Maximum I/O Cable Lengths
Serial RS-232C
RS-22A
Parallel (non-IEEE 1284)
Parallel (IEEE 1284 with
"B" type connector)
Parallel (IEEE 1284 with
"C" type connector)
EN
RS-232-C: Xon/Xoff (software) and Data
Terminal Ready (hardware)
RS-422-A: Xon/Xoff (software) only
The signal logic or "sense" of the data terminal
ready (DTR) line is switchable to either active
HIGH (the factory default) or active LOW from the
printer control panel.
Asynchronous with 1 start bit, 8 data bits, and 1
stop bit
Not used
300, 600, 1200, 2400, 4800, 9600, 19200,
57600*, 115200**
15 meters (50 feet)
1200 meters (4,000 feet)
3 meters (10 feet)
3 meters (10 feet)
10 meters (34 feet)
Serial I/O Specifications – 99
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