background image

q

  Attach the supplied angles to bottom side of the receiver, 

and tighten the two supplied screws (M3

×

6 mm) on each 

angle.

Set screws

Angle

w

  Mount the receiver securely with the four supplied screws 

(M5

×

20 mm) to a flat surface which is more than 10 mm 

(

13

/

32

 inch

) thick and can support more than 2 kg (4.4 lb).

 

Flat washer

Spring washer

Self-tapping

screw

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan

A-6721H-1EX 

Printed in Japan

© 2008  Icom Inc.

DATA

OUT

AWG28 to AWG16

PC DATA

OUT

PC DATA OUT

Red

Black

DATA IN
DATA OUT

DATA IN

GPS

receiver

Navigation

equipment

PC

12 V battery

AIS receiver

to antenna

VHF Marine transceiver

Wire information

Fuse replacement

Bolting torque 
0.22–0.25 N·m 

Stripped skin length
6–8 mm

One fuse is installed in the supplied 

DC power cable. If a fuse blows or the 

receiver stops functioning, track down 

the source of the problem, if possible. 

Replace the damaged fuse with 

properly rated fuse.

PC conncetion

DO NOT use a solid conductor 

cable, otherwise the connected 

cable may be disconnected.

CAUTION: 

NEVER connect a 24 V DC 

power source directly. This 

will damage the receiver.

This connection is not necessary if you 
have no VHF marine transceiver.

1

5

6

9

1

13

14

25

D-sub 9 Pin

D-sub 25 Pin

Pin 2: Data

Pin 5: Ground

Pin 3: Data

Pin 7: Ground

Less than 

2 mm

Fuse rating: 0.5 A

CONNECTIONS

INSTALLATION

SPECIFICATIONS

D

 General

• Frequency coverage  

: 161.975 MHz, 162.025 MHz

• Type of emission 

:  16K0F1D (GMSK)

• Antenna impedance  

: 50 

W

 nominal

• Operating temp. range  

:  –20°C to +60°C; –4°F to +140°F

• Power supply requirement 

:  12 V DC nominal (10.8 V to 15.6 V) 

(negative ground)

• Current drain   

:  0.25 A

•  Dimensions (Projections not included)
   

Without Angle 

:  132(W) 

×

 34(H) 

×

 155(D) mm 

3

16

(W) 

×

 1 

11

32

(H) 

×

 6 

3

32

(D) in

   

Angle attached 

:  158(W) 

×

 39(H) 

×

 155(D) mm 

7

32

(W) 

×

 1 

17

32

(H) 

×

 6 

3

32

(D) in

• Weight (Approx.)
   

Without Angle 

: 400 g (14.1 oz)

   

Angle attached 

: 460 g (16.2 oz)

• DATA input interface 

:  IEC61162-1: 2000 (4,800 bps)

   

Sentence formatters  :  RMC, GGA, GNS, and GLL

   

Input level 

:  Less than 2 mA  

(When 2 V is applied)

• DATA output interface 

  To navigation equipment  :  IEC61162-2 (38,400 bps)
   

Sentence formatter 

:  VDM

   

Output level 

:  5 V, 40 mA max  

RS-422 ballanced type

  To PC 

 

:  Baud rate 38,400 bps

   

Sentence formatter 

:  VDM

   

Output level 

:  ±5 V, ±35 mA typical  

RS-232C unballanced type

D

 Receiver

• Sensitivity 

 

:  0.35 µV (typical)

• Adjacent channel selectivity  : More than 70 dB
• Spurious response  

: More than 70 dB

• Intermodulation  

: More than 65 dB

• Hum and noise   

: More than 40 dB

• Conducted spurious emission : Less than –57 dBm

All stated specifications are subject to change without notice or obligation.

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