OPERATING SPECIFICATIONS
SEHI USER’S GUIDE
2-7
Fault Protection:
Each segment disconnects itself
from the other segments if 32
consecutive collisions occur, or if
the collision detector of a segment
is on for longer than approximately
110
µ
s. This fault protection resets
automatically after one packet is
transmitted/received onto the fault
protected segment without causing
a collision.
Power Supply Requirements
The power supply has two outputs of +5 Vdc and +12 Vdc. The maximum
output power is 40 W and the minimum efficiency is 65% under all
conditions of line at full load. The minimum and maximum load current
from each output is shown below.
Environmental Requirements
Operating Temperature:
+5
°
to +50
°
C
(41
°
to 122
°
F)
Non-operating Temperature: -30
°
to +90
°
C
(-22
°
to 194
°
F)
Operating Humidity:
5% to 95% (non-condensing)
Output
Min. Load
Max. Load
Max Power
+5 Vdc
0.75 A
4 A
20 W
+12 Vdc
0.00 A
2 A
24 W
The SEHI has a universal power supply. This allows the use
of an input power range from 100-125 and 200-240 Vac,
50-60Hz.
NOTE