Cabletron Systems SEHI-22FL - Manual (Page 21)

Chapter 3: Installation Requirements and Specifications
3-6 SEHI User’s Guide
3.5 OPERATING SPECIFICATIONS
The operating specifications for the SEHI are described in this section.
Cabletron Systems reserves the right to change these specifications at any
time without notice.
System Specifications
Operating System Memory: 1.5 MB
Internal Processor: Intel i960 operating at 16 MHz
Ethernet Controller: National Semiconductor DP83916
Non-Volatile RAM: 32 KB with battery back-up
EPROM: 64 KB
FLASH MEMORY: 1 MB
Delay Time (Start of Packets) Specifications
Twisted Pair to EPIM-A: 1.10 ms
Twisted Pair to Twisted Pair: 1.00 ms
EPIM-A to Twisted Pair: 1.00 ms
Delay Times (JAM) Specifications
Twisted Pair to EPIM-A: 960 ns
Preamble Specifications
Input: Minimum of 40 bits required
Output: 64 bits min. (last 2 bits are 1,1)
SEHI Book Page 6 Friday, April 19, 1996 10:46 AM