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Range 
selection
Changes the radar range.
u+"' 
Increases lhe range by 
one step.
RINGS indicator 
selection
Tums on and off the fixed distance 
scale display. When 
this 
is 
turned 
on, the 
intervals 
of the
range rings will be 
displayed. 
When this is turned 
off, then 
"OFF" 
will 
be displayed.
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Pulse width selection
Select the 
pulse 
width. 
There 
is 
three 
pulse 
widths: 
Short 
pulse 
(SP), 
middle 
pulse 
(MP) 
and
long 
pulse 
(LP). 
The 
pulse 
widths that can be used depend on the 
range 
being 
used. 
lf a
change cannot be made, then 
nothing will be displayed. This setting is stored for 
each range.
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Tuning indicator 
mode
o
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(The 
maximum range 
is 
96 
or 
120 nautical 
miles.)
(The 
minimum 
range 
is 
0.125 nautical miles.)
Sets the tuning 
mo{e 
to 
MAN
I 
MANUAL 
| 
---
(Manual 
tuning) 
--- 
(Aulomatic 
tuning)
@ 
Bearing mode 
selection
This has the 
same 
function 
as the 
[AZl 
MODE] 
switch.  li switches between North-up 
(true
bearing), Head-up 
(relative 
bearing) and Course-up. Each time 
this button is clicked it will 
step
through the settings in the 
following order: 
"N 
UP" 
-+ 
"C 
UP' 
+ 
"H 
UP"
Motion mode selection
The 
screen display 
is 
changed 
between the 
True 
Motion 
(TM) 
and Relative Motion 
(RM)
displays. Clicking this button 
will 
switch between 
"TM" 
and 
"RM." 
(R) 
indicates 
a 
relative 
trail.
(T) 
indicates a true trail.
Transm ission/Standby 
selection
About three minutes after the 
[PWR] 
switch is turned 
on, the 
'PREHEAT' 
indication 
on the upper
left 
of 
the 
screen 
will 
change 
to 
'STANDBY."
STANDBY:  Indicates that the 
unit is in the standby 
state.  Clicking 
the 
switch at this time will
change the unit 
to the 
transmission state.
TRANSMIT: Indicates 
that the 
unil is in the transmission 
state. 
Clicking the 
switch at this time
will 
change the 
unit 
to the standby state.
Ghange InterSwitch connection
This is 
displayed 
if InterSwitch 
is 
connected. 
The indicator 
shows the connected 
scanner and
the 
connection status of 
the 
indicator. 
When this 
switch is 
pressed, 
a 
menu 
to 
change the
connection status of the scanner 
and indicator will 
be displayed. 
The 
scanner and indicator
connection status cannot be 
changed, unless 
the master 
indicator 
is in 
the standby state.
AIS 
target 
refreshed 
(ACT)
When 
this switch 
is 
pressed, 
the 
AIS 
trarget 
will 
be activated.
AIS 
target 
deactivated 
(DACT)
When this switch is 
pressed, 
the 
activated AIS target is 
paused.
ARPA symbol 
indicator 
selection
Turns the ARPA 
symbol 
indicator 
on or off.  The 
setting is changed each time this button is
clicked.
AIS symbol indicator selection
Turns the AIS symbol indicator 
on or o{f.  The 
setting is changed each time this button is
clicked.
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