Microwave
radio
relay
link
ZENITH
80
42/52
1.2
A
cable
connected
according
to
the
following
figure
can
be
used
for
this
connection:
Figure
29
The
direct
connection
of
the
monitoring
PC
If
the
PC
frame
is
galvanically
connected
with
the
power
grid,
the
direct
monitoring
of
the
PC
to
ODU
is
not
recommended.
With
regard
to
possible
transfer
of
noise
signals
from
the
ODU
unit
to
the
power
grid
and
the
other
way
round
this
connection
is
only
an
emergency
solution
acceptable
for
a
short
time.
For
service
purposes
Alcoma
delivers
a
cable
ended
on
one
side
by
the
Cannon
9F
connector
and
on
the
other
by
the
Cannon
9M
and
PFL10
connectors,
which
connects
the
DCD,
RX,
TX,
DSR,
DTR,
RTS,
and
CTS
signals.
The
cable
is
intended
for
a
temporary
connection
of
the
monitoring
PC
with
the
monitoring
processor
in
ODU.
The
minimum
4
wire
connection
requires
the
RX,
RTS,
TX
signals
and
the
signal
grounding,
i.e.,
using
of
no.
3,
4,
5,
and
9
pins.
PC
serial
port
PC
surveilance
Caution:
Pins
7
‐
4
and
8
‐
9
may
or
may
not
be
a
cable
connected
User
interface
