Typical passive terminators (resistors) allow signals to fluctuate directly in relation to the TERM Power Voltage. Usually terminating resistors will suffice over short distances, like 2-3 feet, but for longer distances active termination is a real advantage. Active termination provide the following advantages:
- Helps reduce noise.
- A logic bit can be used to effectively disconnect the termination.
- Regulated termination voltage.
- SCSI-2 spec. recommends active termination on both ends of the scsi bus.
- Improved resistance tolerances (from 1% to about 3%)
Added by Editor - Gary Field (garyf@wang.com)
- Reduces current drawn from TERMPWR line.
In FPT form:
- Provides signal overshoot/undershoot clamping on all signal lines