64 CR11*, CP11*, CT11* 6U CompactPCI® SBC
Publication No. HRMCR11 Rev. B.0
Voltage between conductors (DC or AC peaks) of
5
I V - 100 V
require
a
spacing of
y
0.6 mm for t pe B2 conditions
external conductors, uncoate
d
,
sea !even to 3050 m
.
These mies are in accordance with IPC-2221 req
u
irement
s
.
Isolation
The Isolation of the Ethernet outputs oa front is
l
intited to 500 V peak against
GND and any other
s
u
ppl
y
voltage
.
By it
s
elf the onboard digital gro
t
md GND and the front panel/chassis frame
ground FGND are isolated
011
the CR! I with a layout distance of more than
0.6
nun in all PCB layers. However, many standard devices (USB-keyboard, USB
mou
s
e
,
and mo1titor) except Et
h
ernet will cow1ect FGND and GND directly in
the de
v
ice
.
Also standard racks (our starter cage too) com1ect both grounds at
the power supply for safety reasons
.
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