passive termination
passive termination
[‚pas·iv ‚tər·mə′nā·shən] (computer science)
The simplest means of ending a chain of peripheral devices connected to a small computer system interface (SCSI) port, suitable for chains with no more than four devices.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
SCSI-1 included a single-ended (SE) transmission supported by a passive termination.
Passive termination is rarely used today because it was designed for low-speed and short distance SCSI-1 devices.
A: Passive termination is a resistor stack: Termpwr (4.0 to 5.25 Volts) 220 ohm resistor to the signal line and 330 ohms from the signal line to ground.
Bus errors and random bus hangs will occur with passive terminations with large configurations or high speed.
As SCSI bus speed increased, this
passive termination was not adequate.
Q: What is the difference between active and
passive termination on a SCSI bus?
A small K implies the potential for instability over a wider range of
passive terminations. Therefore, optimizing a termination for best output power will have more flexibility.
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