User's Manual

SBS
-
900 Shore
Ba
Ba
sed
Radar Systems
Chapter
6
:
Local operation instructions
KH
KH
-
1602 2
issue 1
:
Standard SBS900 Systems Operator & Maintenance Handbook
Page
43
43
of
240
6.3.3
Emergency
antenna
stop
In an emergency,
antenna rotation
and
system
transmission can be stopped using
ANY of the
following mechanisms.
STOP
antenna
rotation
Use
any
of the
functions
shown
RDU keyswitch:
Place the
Antenna Rotation
keyswitch
on the front of the
Radar Distribution Unit
into the
OFF
position.
As an additional safety precaution, when in
the OFF
position the key can be removed.
Keyswitch on door of
RDU
Man Aloft Switch (MAS):
P
lace the
externally mounted
masthead
Man Aloft
switch to the OFF position.
This has the same effect as using the
Antenna Rotation
switch noted above.
Man
aloft switch
Service Display:
RadarView
software
When the system is being operated via the
service display
(software
must be
On
On
-
line)
,
select
Channel A
then
Manage Radar
Select the
Emergency
Stop
button.
This has the same effect as using the
Antenna
Rotation Keyswitch or the Man Aloft switch.
Caution: This function is disabled wh
en the
Servi
ce Display is Off
-
line.
Example of Manage Radar window
in RadarView
program
What happe
ns?
When
the
Antenna Rotation
or
or
Man Aloft
switches
are
set to OFF
or
when
the
Emergency Stop
software function is activated
, single and
three
phase AC power to the
DTX
-
A7
A7
transceiver
enclosure
and
to
the
Antenna sub
-
assembly
are isolated thus stopping antenna
rotatation and RF transmission.
System isolation:
Please refer to the maintenance section for details on isolating the
system from the
AC
mains supplies for maintenance purposes or
working aloft.
Caution
:
When the emergency stop functions are used
,
s
ingle and three phase AC
voltages are still presen
t within the RDU.
The following
procedures
must not be used as a primary means of system isolation for
maintenance procedures or working aloft.