NETWORK REQUIREMENTS/SPECIFICATIONS
Page 2-16
COLLISION DETECTOR (cont.)
Parameter
Typical Worst
Value
Case
Common-mode voltage range
at CP-in:
0-30 Volts
0-5 Volts
Input sensitivity:
±
100 mV
±
75 to 150 mV
Output Voltage into 78 ohms
CP-out (any):
900 mV
550 mV
Interframe test signal (SQE TEST)
(Switch selectable in LOOPBACK
mode only.)
delay:
700 ns
600-1000 ns
duration:
800 ns
600-1000 ns
NOTES
:
1) The MT-800 will generate SQE (10 MHz) at Ports 1-8 if either the
CP-in pair is active or if more than one of the TX-in pairs (Port 1-8) are
active.
2)The MT-800 will generate a JAM signal (5 MHz) on the TX-out pair
whenever more than one of the TX-in pairs (Port 1-8) is active.
INTERFACE CONNECTORS
PORTS 1-8
Type:15 position D type plug.
Pin
Pin
1
Logic Ref
9
Collision -
2
Col
10
Transmit -
3
Tr
11
Logic Ref.
4
Logic Ref.
12
Receive -
5
R
13
N/C
6
N/C
14
Logic Ref.
7
N/C
15
N/C
8
Logic Ref.
Front matterBook Page 16 Thursday, January 25, 1996 12:06 PM
