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Shielded Twisted Pair Transmitter Specifications
BRIM-F6 User’s Guide Page 4-5
Shielded Twisted Pair Transmitter Specifications
4.2 Cable Specifications
The FDDI Physical Layer Medium Dependent (PMD), Twisted Pair
Physical Layer Medium Dependent (TP-PMD), and Single Mode Fiber
Physical Layer Medium Dependent (SMF-PMD) ANSI standards define
cable requirements as follows:
Deassert time 10 µsec typical
350 µsec maximum
Shielded Twisted Pair Transmitter
Amplitude 1.285 Vpk maximum
1.165 Vpk minimum
Rise time 3 nsec minimum
5 nsec maximum
Fall time 3 nsec minimum
5 nsec maximum
Rise/Fall variation 0.5 nsec maximum
Overshoot 5% maximum
Shielded Twisted Pair Receiver
(Signal Detect)
Assert time 10 µsec typical
100 µsec maximum
Deassert time 10 µsec typical
350 µsec maximum
Unshielded Twisted Pair Receiver
(Signal Detect)
BRIM-F Book Page 5 Monday, January 29, 1996 9:26 AM