D Receiving Gps Data - Icom ID-51A Advanced Manual

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10
GPS OPERATION
■ GPS operation
The transceiver has a built-in internal GPS receiver. The
GPS receiver's position information can be received
in any mode. Also, a NMEA format compatible exter-
nal GPS receiver can be connected to the ID-51A/E
through the [DATA] port.
To receive signals from an external GPS source, connect
an external NMEA format compatible receiver to the ID-
51A/E according to the instructions, shown below. The
cable is not an Icom product and must be made sepa-
rately. Refer to the wiring diagram for pin connections.
• Position data can be transmitted in only the DV mode.

D Receiving GPS data

Confirm that the GPS receiver is receiving your posi-
tion and time.
The GPS icon blinks when searching for satellites.
 
The GPS icon stops blinking when the minimum number of
needed satellites are found.
• It may take only a few seconds to calculate your posi-
tion. But depending on the environment, it may take a few
minutes. If you have difficulties receiving, we recommend
that you try a different location.
• The icon does not appear when:
"GPS Select" item is set to "Manual."
(GPS > GPS Set > GPS Select)
"GPS Indicator" item is set to "OFF."
(GPS > GPS Set > GPS Indicator)
Set the "GPS Select" item to "External GPS" when an
external GPS receiver is connected.
NOTE: Continuous using the Internal GPS mode makes the
transceiver's battery easier to be exhausted.
Longer battery time can be achieved by turning ON the
Power Save mode. See page 16-32 for details.
(MENU > GPS > GPS Set > Power Save (Internal GPS))
NOTE: When using the GPS receiver
• GPS signals cannot pass through metal objects. When using the ID-51A or ID-51E inside a vehicle, you may not
receive GPS signals. We recommend you use it near a window.
• The Global Positioning System (GPS) is built and operated by the U.S. Department of Defense. The Department is
responsible for accuracy and maintenance of the system. Any changes by the Department may affect the accuracy
and function of the GPS system.
• When the GPS receiver is activated, please do not cover the ID-51A or ID-51E with anything that will block the
satellite signals.
• The GPS receiver may not work if used in the following locations:
1. Tunnels or high-rise buildings
4. In remote forested areas
• The GPS receiver may not work if the transceiver operates near the 440.205 MHz. This is due to signals made in
the internal circuit and does not indicate a transceiver malfunction.

2. Underground parking lots
5. Under bad weather conditions (rainy or cloudy day)
10-2
• Connection
To the
RS-232C Port
To the [DATA]
jack
To the [DATA] jack
TxD GND
RxD
ø 2.5 mm Less than ø 6.0 mm
Connect w with RxD, e with TxD and t with GND.
To prolong the battery life in the GPS mode
To prolong the battery life while operating in the GPS
mode, manually update your position with the re-
ceived GPS data.
q Set the "GPS Select" option to "Internal GPS," and re-
ceive your position from the internal GPS receiver.
( MENU > GPS > GPS Set> GPS Select)
w Open the MANUAL POSITION screen, and then
push [QUICK] .
( MENU > GPS > GPS Set> Manual Position)
e D-pad() to select "Cap-
ture From GPS," and
then push D-pad(Ent).
• Your current position is
now memorized and dis-
played on the MANUAL
POSITION screen.
r After that, set the "GPS
Select" option to "Manual."
3. Under a bridge or viaduct
GPS
Receiver
Cable
RS-232C (DB-9 female)
w
e
t q
o y