Figure 15: Example Of A Gps Receiver Display; Table 4: Converting Gps Display Formats - Hughes HN9500 Installation Manual

Installing the satellite router
GPS display format A
Degrees minutes
seconds
DD MM SS.S or
DDD MM SS.S
Example: 38° 25' 55.8''
GPS display format B
Decimal degrees
Some GPS receivers are suitable for Ka-band installations such as HN9500; some are not
suitable. For a complete discussion on various GPS receivers, see Field Service Bulletin
(FSB), Introduction to Commercial GPS Units for Ka Installers (FSB_080404_01).

Figure 15: Example of a GPS receiver display

receiver display showing latitude and longitude along with the fields on the Installation
Parameters screen where these values are entered.
Figure 15: Example of a GPS receiver display
For Latitude, the North radio button is selected by default. For Longitude, West is selected
by default.
For some GPS receivers, the desired display format DD(D) MM.MMM is the default, or you
can set the display to this desired format. If you cannot set the display to the desired format,
you will have to convert the displayed values or use a different GPS receiver. DD(D)
represents degrees in one or two digits (if latitude) or one to three digits (if longitude).

Table 4: Converting GPS display formats

display formats you might encounter to the format required by the installation software. You
only need to use these calculations if your GPS tool does not display latitude and longitude
in the desired format, DD(D) MM.MMM. The table explains how to convert the minutes
portion of the displayed value. In all cases enter degrees in whole numbers—1, 2, or 3 digits,
as displayed on the GPS receiver.
Table 4: Converting GPS display formats
How to convert to DD(D) MM.MMM
Conversion steps
Displayed value to convert:
1. Divide seconds (55.8') by 60.
2. Add the quotient to the minutes
value (25).
Value converted to correct format:
How to convert to DD(D) MM.MMM
Conversion steps
on page 23 shows an example of a GPS
on page 23 explains how to convert from GPS
Example
38° 25' 55.8''
55.8 ÷ 60 = 0.93
25 + .930 = 25.930 (using 3 decimal
places)
38° 25.930
Example
HN9500 Satellite Router Installation Guide
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Chapter 3
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