Cabletron Systems BRIM-F6 - Manual (Page 21)

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
µ
sec typical
350
µ
sec 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
µ
sec typical
100
µ
sec maximum
Deassert time 10
µ
sec typical
350
µ
sec maximum
Unshielded Twisted Pair Receiver
(Signal Detect)
BRIM-F Book Page 5 Monday, January 29, 1996 9:26 AM