Page 1
Distributed by
Any reference to Raytheon or
RTN in this manual should be
interpreted as Raymarine.
The names Raytheon and RTN
are owned by the
Raytheon Company.
Page 2
Electronics
OPERATING FUNCTIONS
Turning Unit On/Off
R20, 21/40, 41XX SERIES RADARS
Quick Reference Card
On
On
STBY
OFF
=
Warm Up
1:30
:29
:28
=
Ready
STBY
:27
T ransmit
1
EBL
T
2
VRM
TM C UP
NM
O
O
1
L
1
T120
190
2.0 0
O
2
2
304
Transmit
XMIT
OFF
=
2.2 6
ALM
EXP
I
6
IR
C
CUR
RNO
O
N4235.68
WP
1. 3 4
0:07
3
O
O
RNG
1.2
W7000.37
190
.5
O
BRG
086
SPD14.5
0:07
Off
Off
STBY
OFF
+
XMIT
OFF
=
Press
Together
ADJUSTING FOR BEST TARGET RETURNS
Set control as follows Adjust
RANGE
3NM
RANGE
RainCL
VRM
Tune
Light
Speckle
EBL
SeaCL
F EBL
CURSOR
Gain
OFF
CENT
ZOOM
R20, 21/40, 41XX SERIES RADARS
Gain
Strongest
T argets
1
EBL
T
2
VRM
TM C UP
NM
O
O
1
L
1
T120
190
2.0 0
O
2
2
304
2.2 6
ALM
EXP
I
6
IR
C
CUR
RNO
O
N4235.68
WP
1. 3 4
0:07
3
O
O
RNG
1.2
W7000.37
190
.5
O
BRG
086
SPD14.5
0:07
PAGE
1
Page 3
Electronics
MAKING MENU SELECTIONS
Select with Tracking Pad
MENU ENTER
Making Function Menu Selections
Quick Reference Card
FUNCTION
RADAR SETUP
INITIAL SETTING
MARPA
R20, 21/40, 41XX SERIES RADARS
FUNCTION
POSITION
WAYPOINT
ROUTE
IR
EXPANSION
TIMED TX
TX PERIOD
STBY PERIOD
FUNCTIONS
TUNE
WAKES
OFF L TD WPT L
OFF
OFF ON
OFF ON
OFF ON
OFF ON
10 20 30 SCAN
351015MIN
MANUAL AUTO
OFF SHORT LONG
DISPLAYING OWN SHIP'S POSITION
Select with Tracking Pad
SETTINGS
Making RADAR Setup Menu Selections
RADAR SETUP
RANGE
BEARING
ALM LEVEL
TX PULSE (1,5NM)
TX PULSE (3NM)
TX PULSE (6NM)
KEYBOARD DIMMER
DISPLAY BRILLIANCE
FUNCTIONS
LANGUAGE
NM KY KM
MAGNETIC TRUE
1234567
0.08 0.35 uS
0.35 0.7 uS
0.35 0.7 uS
01234567
12345678
SETTINGS
Select with Tracking Pad
ENTER
SETTING DISPLAY BRILLIANCE
MENU
ENTER MENU
=
=
Radar
1
EBL
T
TM C UP
O
O
1
L
T120
190
O
2
304
EXP
IR
RNO
O
N4235.68
WP
0:07
3
O
RNG
1.2
W7000.37
.5
O
BRG
086
SPD14.5
Radar
1
EBL
T
TM C UP
O
O
1
L
T120
190
O
2
304
EXP
IR
RNO
O
N4235.68
WP
0:07
3
O
RNG
1.2
W7000.37
.5
O
BRG
086
SPD14.5
2
VRM
NM
1
2.0 0
2
2.2 6
ALM
I
6
C
CUR
1. 3 4
O
190
0:07
2
VRM
NM
1
2.0 0
2
2.2 6
ALM
I
6
C
CUR
1. 3 4
O
190
0:07
R20, 21/40, 41XX SERIES RADARS
PAGE
2
Page 4
Electronics
Quick Reference Card
MAKING MENU SELECTIONS CONTINUED
Making Initial Setting Menu Selections
INITIAL SETTING
R20, 21/40, 41XX SERIES RADARS
BEARING
DISPLAY TIMING
TUNE PRESET
STC PRESET
BUZZER
SEE
MAINTENANCE
SECTION
IN OWNER'S
MANUAL
Initial settings are very important and should
be performed immediately after installation
for maximum performance from your radar.
Making MARPA Menu Selections
MARPA
CPA
CPA RING
TCPA
VECTOR
VECTOR LENGTH
INTERCEPT
0 0.1 0.2 0.5 1 2 NM
OFF ON
123102030MIN
RELATIVE TRUE OR MAG
13612NM
OFF ON
A SIX TARGET MARPA IS ON R40/41XX RADARS.
A SINGLE TARGET MARPA IS AN ON R20/21XX RADARS.
NOTE:
A RAYTHEON FLUX GATE COMPASS MUST BE CONNECTED TO
THE RADAR FOR MARPA FEATURE TO OPERATE.
NOTE:
STANDARD
OPTION
R20, 21/40, 41XX SERIES RADARS
PAGE
3
Page 5
Electronics
KEYPAD FUNCTIONS
R20, 21/40, 41XX SERIES RADARS
Quick Reference Card
1
2
4
5
6
7
8
9
ACQ
1
EBL
T
DESIG
GUARD VRM
EBL
R-T/M
RR
SHM
HDG
MODE
HDG
RESET
TM/RM ZOOM
WINDOW
1
2
EXP
IR
190
304
O
O
TM C UP
O
T120
L
VRM
1
2. 0 0
2
2. 2 6
2
NM
ALM
I
6
TUNE
RAIN CL
SEA CL
GAIN
RANGE
RANGE
EBL
FEBL
CURSOR
OFF
CENT
12
13
143
15
16
17
18
19
20
21
22
23
ENTERMENU
10
11
M.O.B.
XMIT
OFF
STBY
OFF
RNO
C
0:07
1.2
086
O
N4235.68
O
W70 00.37
SPD 14.5
WP
3
RNG
.5
BRG
O
CUR
1. 3 4
190
0:07
O
24
25
TRACK PAD
R4O
KEY SYMBOL FUNCTION
ACQ
1
DESIG
2
GUARD
3
EBL
R-T/M
4
RR
SHM
5
HDG
MODE
6
HDG
RESET
7
Aquires target to be tracked. Press and hold to delete all aquired targets simultaneously .
Provides designated target information. Quick presses change designations. Press and hold to turn off.
Enables or disables Guard Zone alarm as set with the Track-Pad and I or O operation. I = Inbound Mode
O = Outbound Mode Blank = OFF
Selects EBL Relative or True/Mag Bearing Mode alternately .
Enables or disables the fixed Range Rings alternately. Momentarily disable the Heading flash while pressed held.
Selects type of Heading Mode. C-UP = Course UP, N-UP = North UP, H-UP = Head UP
Heading reset in Course UP Mode returns heading flash to 000.
R20, 21/40, 41XX SERIES RADARS
PAGE
4
Page 6
Electronics
KEY SYMBOL FUNCTION
TM/RM
8
Selects true or relative motion display .
R20, 21/40, 41XX SERIES RADARS
Quick Reference Card
9
10
11
11
12
13
13
14
15
16
WINDOW
M.O.B.
XMIT
OFF
STBY
OFF
RANGE
RANGE
VRM
EBL
Enables and Selects the displays within the dual screens: Raychart, Fish Finder , Sea Talk and OFF
Marks the point where the man over board incident occurred.
Turns ON transmitter which activates Pedestal/Radome. Press STBY OFF and XMIT OFF simultaneously to
SHUT OFF.
Turns ON power to Display and Pedestal/Radome and activates 90 second countdown timer . Press STB Y OFF
and XMIT OFF simultaneously to SHUT OFF. When STBY OFF and MENU keys are pressed simultaneously ,
the display automatically resets the brilliance to level 6.
TUNE
Manually fine tunes receiver by peaking tuning bar in lower left corner. (No tuning bar in A UTO tune)
Increases the range scale in use.
Decreases the range scale in use.
Enables a VRM for display/A short press, selects a VRM for operation. Press and hold to turn off selected VRM.
RAIN CL
Reduces the amount of rain or snow returns.
Enables a EBL for display/A short press, selects an EBL for operation. Press and hold to turn off selected EBL.
17
18
19
20
21
22
23
24
25
FEBL
CURSOR
ZOOM
MENU
ENTER
Enables a EBL#2 for display EBL to be placed anyway on the display.
SEA CL
Reduces the amount of sea returns.
Enables cursor for range and relative bearing measurements from own ship.
OFF
Places origin at any point on screen up to 66% of radius. Inop 32/48 NMi Ranges.
CENT
GAIN
Controls strength of target returns.
Magnifies a selected point of interest on the display by a factor of X2. Inop 1/8 NM an in OFF CENTER mode.
Enables MENU for setups and selections.
Enters selected data.
Positions cursor to select menu items or to make on screen measurements and selections.
R20, 21/40, 41XX SERIES RADARS
PAGE
PAGE
5
Page 7
Electronics
R20, 21/40, 41XX SERIES RADARS
Quick Reference Card
DISPLAY LAYOUT
1
T
O
O
WP
RNG
BRG
EBL1
28
EBL2
OWNERSHIP
HEADING
TM C UP
T120
0:07
1.2
O
086
MODE
O
L
O
N4235.68
O
W70 00.37
SPD 14.5
VRM
1
2. 0 0
2
2. 2 6
1. 3 4
190
0:07
VRM1
VRM2
2
ALM
I
CUR
NM
6
C
O
GUARD ZONE "ON"
"I" - INBOUND
31
"O" - OUTBOUND
"S" - SENSITIVITY
TUNE
RAIN CL
SEA CL
GAIN
RANGE
RANGE
CURSOR
"IR" INTERFERENCE
26
REJECTION "ON"
"EXP" - TARGET
27 29 30
EXPANDER "0N"
ACQ
DESIG
GUARD VRM
EBL
R-T/M
RR
SHM
HDG
MODE
HDG
RESET
TM/RM ZOOM
WINDOW
M.O.B.
XMIT
OFF
STBY
OFF
R4O
EBL
1
190
2
304
EXP
IR
RNO
3
.5
RASTER SCAN RADAR
FEBL
CENT
ENTERMENU
EBL
OFF
SYMBOL DESCRIPTION FUNCTION
26
27
28
29
EXP
EBL
1
190
2
304
T120
IR
CUP
O
Interference Rejection ON
Target Expander ON
EBL Selected
EBL Bearing Mode
1
T
O
O
R = Relative Bearing
T = True Bearing
M = Magnetic Bearing
BearingofEBL1&EBL1.
Heading Mode
H-UP = Head Up.
C-UP = Head Up.
N-UP = North Up.
Bearing Selected
T = True Bearing
L
M = Magnetic Bearing
Own Ship's Heading
Heading Data Source
M
= Magnetic Senor
S
=SeaTalk
L
= Loran or GPS
Display Readout, Upper Left.
Display Readout, Upper Left.
Display Readout, Upper Left.
Display Readout, Upper Center
Magnetic Heading
Magnetic Heading
Magnetic or True Heading
32 39
RANGE - NMi
RANGE RINGS - NMi
33
TUNE MODE
INDICATOR
MOB DATA
35
L/L DISPLAYED
DISPLAYED
34 38
WAYPOINT DATA CURSOR POSITION
36
37
SPEED
TRACK PAD
MODE
INDICATOR
R20, 21/40, 41XX SERIES RADARS
PAGE
6
Page 8
Electronics
R20, 21/40, 41XX SERIES RADARS
Quick Reference Card
SYMBOL DESCRIPTION
VRM Selected
VRM
30
31
32
33
34
35
N4190.67
36
W70 06.04
2
NM
1
2. 0 0
2
2. 2 6
ALM
I
6
RNO
3
.5
WP
0:07
RNG
1.2
BRG
086
MO
0:03
RNG
0.34
BRG
175
O
O
O
N 42 37.68
O
W70 05.97
O
N4290.67
O
W70 06.04
1 26231.5uS
2 14454.3uS
VRM Range Units
NM = Nautical Mile
KY = Kiloyard
KM = Kilometer
Range of VRM1 & VRM2
Guard Zone Alarm ON
Guard Zone Mode
I = In Mode
O = Out Mode
Sensitivity Level
Range Scale
Range Ring Interval
Manual T uning Mode
(Tuning Indicator)
Auto Tuning Mode
W aypoint Data ON
Time-T o-Go (Min.)
Range (NM)
O
Bearing (Deg.)
MOB Data ON
Time-T o-Go (Min.)
Range (NM)
Bearing (Deg.)
Own Ships LL
W ayP oint LL
MOB Point LL
W ayP oint TD
FUNCTION
Display Readout, Upper Right
Display Readout, Upper Right.
Display Readout, Lower Left.
Display Readout, Lower Left.
Replaces T uning Indicator
Display Readout, Lower Mid Left.
Display Readout, Lower Mid Left.
Display Readout, Lower Mid Right.
Display Readout, Lower Mid Right.
Display Readout, Lower Mid Right (MOB mode only).
Display Readout, Lower Mid Right.
37
38
39
40
SPD 14.5
CUR
1.26
210
0:07
C
RT
TV
CRS
CPA
TCPA
Intercept
Ships own speed
Cursor Position
Range NM, KY or KM
Bearing (Deg.)
Time-T o-Go (min.)
Track Pad Mode Indicator
C
= Cursor
E
=EBL
V
=VRM
O
=OffCenter
G
=Guard
F
= Floating EBL
M
= MARPA
Z
= Zoom
Relative V ector
True V ector
Tgt Course
Closest point of Approach
Time to CP A
Intercept
Display Readout, Lower Mid Right.
Display Readout, Lower Right.
Display Readout, Lower Right.
MARP A Readout.
MARP A Readout.
MARP A Readout.
R20, 21/40, 41XX SERIES RADARS
PAGE
7
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