Garmin GPS 152 Owner's Manual And Reference Manual page 66

Gps trackplotter

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To restore the Serial Data Format settings back to the default 'Garmin Data Transfer':

1. From the Com tab, press MENU, highlight 'Restore Defaults' and press ENTER/MARK.

If 'Garmin DGPS' or format is selected, additional ﬁ elds are provided to control a GARMIN

differential beacon receiver directly from your GPS 152. You may have the unit automatically scan

for the DGPS beacon signal or you can enter the beacon frequency and bit rate on the unit and the

information will be used to tune the beacon receiver.

To have the unit automatically scan for a frequency:

1. With the unit set to 'Garmin DGPS' ', use the ARROW KEYPAD to highlight the "Beacon" ﬁ eld

and press ENTER/MARK.

2. Highlight 'Scan' and press ENTER/MARK. The numbers in the "Frequency" ﬁ eld will change as the

unit scans from 284 kHz to 325 kHz, 200 bit rate, then 100, at 6-second intervals.

To restart the scan:

1. Press MENU, highlight 'Restart Scan' and press ENTER/MARK.

To manually enter a frequency and bit rate:

1. With the unit set to 'Garmin DGPS', use the ARROW KEYPAD to highlight the "Beacon" ﬁ eld

and press ENTER/MARK.

2. Highlight 'User' and press ENTER/MARK.

3. Highlight the "Frequency" or "Bit Rate" ﬁ eld, press ENTER/MARK, then enter a frequency or bit

rate and press ENTER/MARK when done.

The "Status" ﬁ eld will show one of the following:

• Tuning— unit is attempting to tune to the speciﬁ ed frequency and bit rate.

• Scanning— unit is automatically scanning through the frequencies and bit rates.

• Receiving— unit is receiving DGPS signal and ready for operation.

• Check Wiring— unit is not making connection with DGPS receiver.

When the unit is receiving a DGPS signal, the "SNR" (Signal to Noise Ratio) and "Distance" ﬁ elds

will show data. The SNR range is 0dB to 30dB, with 30 being the best. The Distance may or may not

show data, depending upon the signal being broadcast from the DGPS site.

Reference

Main Menu:

Com tab

You may also manually enter a

frequency and bit rate.

Status

Field

SNR and Distance will show data

when signal is received.

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