# Presentation: 436817

## Navigation – Receiver Setup

- GPS for ICS - 2003

**Notes:**
Navigation – Receiver Setup

## Navigation – Receiver Setup

**Notes:**
Navigation – Receiver Setup

## Garmin GPS III Plus Buttons

**Garmin GPS III Plus Buttons**

**Notes:**
Garmin GPS III Plus Buttons

Display of buttons found on the Garmin III Plus.

## Garmin GPS III Plus Receiver

**Garmin GPS III Plus Receiver**

**Notes:**
Garmin GPS III Plus Receiver

Physical features of the receiver. To turn the unit on, press and hold the red power button for two-three seconds until unit turns on (also controls backlight function). The receiver automatically comes up with the GPS satellite page (not shown here). See next page.

Press and hold the Page button to change the receiver screen orientation.

## GPS III Plus Startup Page

- Upon turning on the receiver, this is the initial page that automatically appears after the introductory screen.

**Notes:**
GPS III Plus Startup Page

The startup page shows the receiver’s status:
Searching: the receiver is searching the sky for its first satellites signals.
Auto Locate: the receiver is initializing and collecting or updating its almanac.
Acquiring: the receiver is collecting data from satellites, but doesn’t have enough information to calculate a position.
2D Navigation: at least three satellites have been locked on to, but the receiver is only able to provide a two-dimensional position.
3D Navigation: at least four satellites have been locked on to and the receiver is able to calculate a three-dimensional position.
Poor Coverage: the receiver is unable to calculate a 2D or 3D position due to lack of satellites, or poor satellite geometry.
Not Usable: the receiver is unusable, probably due incorrect initialization or abnormal satellite conditions.
Simulating Nav: the receiver can be used indoors, or where no satellite signals can be acquired, in simulation mode.
If no satellite signals are acquired within five minutes, the receiver will prompt the user to re-initialize the receiver.

Signal strength bars show which satellites are being acquired. Hollow bar indicates that the satellite signal has been acquired but not locked on to. Solid bar indicates that the receiver has a good lock on that satellite’s signal. The height of the bars indicate how strong the signal reception is.

Sky view graphically shows where the satellites are above the receiver. The receiver is located at the pinpoint in the center of the circles. The inner circle represents an angle approximately 45 degrees above the horizon, and the outer circle represents the horizon. The sky view can be used to get a sense of satellite geometry.

## GPS III Plus Pages

**GPS III Plus Pages**

**Notes:**
GPS III Plus Pages

Pressing Page button moves forward through the pages.
Pressing Quit button moves backward through the pages.

## Access the Main Menu

- Push Menu button twice to access main menu.

**Access the Main Menu**

- Scroll down to Setup using rocker key.

**ENTER**
**MARK**

- Press Enter button once.

**Notes:**
Access the Main Menu

Access Main Menu to setup receiver. Scroll to access Setup sub-page.

## Set Up the Receiver Display

**Set Up the Receiver Display**

- Units display

- Basic settings

- Set time zone

- Heading display

**QUIT**

- Press Quit button to exit any menu or page.

**ENTER**
**MARK**

- Press Enter button to make a selection.

**Notes:**
Set Up the Receiver Display
Access Main Menu to setup receiver.
Only the time zone offset from Universal Time (UTC) and time display can be set in the Time page. There are two choice for time display: 24 hour clock, or 12 hour clock. Time and date are set automatically by the receiver from information provided by the satellite constellation. These cannot be edited by the user.
Heading setting should be matched to hand held compass, or vice-versa, so that both provide the same bearing information. 
Units display allows for selection of metric, statute or nautical distance measurements to be displayed in the chosen format.
Emphasize that the Enter, Page and Quit buttons allow access to menus, data selection and exiting functions on the receiver.

## Set Up the Map Display

- Press Page button until Map Page appears (shows data fields turned on).

**Set Up the Map Display**

- With Map Page displayed press Menu button once to open Map Page options.

**Notes:**
Set Up the Map Display

Map page can be configured using the map menu Map Setup option.

Map functions such as data fields can be turned on and off. Different data fields may be selected (up to a maximum of four) for display on the map page. Map detail can be increased or decreased. Map can be manually panned using the rocker key. MapSource data (if loaded in the receiver) can be configured for display.

How the map is displayed during navigation can also be set. There are two option for this: track up and north up. Change map orientation through the Map Setup screen: select the Map tab, then scroll to Orientation and press Enter button. Toggle to select the option you want.

Play with the various map setup options and sub-menus to see what they do.

## Set Up the Map Display (cont.)

- Data Fields shown turned off.

- Orientation tab: to set up map for north up or track up viewing.

**Set Up the Map Display (cont.)**

**Notes:**
Set Up the Map Display (cont.)

## Map Panning Features

- Move the cursor over a feature and an ID bubble pops up. In addition, you get distance, bearing and coordinates to that point from your present location.

- Move the cursor over a feature
- and push GOTO button if you would like to navigate to that feature. To exit cursor mode, press Quit button.

**Map Panning Features**

**Notes:**
Map Panning Features

Using the rocker key, you can move the map pointer (white arrow is the panning pointer) over a feature and an ID bubble pops up. In addition, you get distance, bearing and coordinates to that point from your present location.

Move the cursor over a map feature and push GOTO button if you would like to navigate to that feature. The receiver will display bearing and distance information to that point from the receiver’s current location.

To exit cursor mode, press QUIT button.

## Receiver Compass Page

**Receiver Compass Page**

- The bearing pointer indicates direction to destination. Data fields provide navigation information.

**Notes:**
Receiver Compass Page

Point out that the compass orientation is set in Main Manu Setup page. There are four compass settings to choose from:
“Auto Mag Var,” which is automatic magnetic variation. The receiver will automatically set compass variation (declination) based on data stored in its memory for your location.
“True,” or true north setting; no variation from true north. Best used for navigation with most maps.
“Grid,” which is used with grid systems based on grid north orientation.
“User Mag Var,” allows the user to set the amount of magnetic variation for their area. Variation can be derived from USGS topographic maps. But the amount of variation tends to shift over time, so the amount of magnetic variation printed on the map may be outdated.

## Receiver Compass Page (cont.)

**Receiver Compass Page (cont.)**

**MENU**

**ENTER**
**MARK**

- Big numbers view.

- After selecting an option, press Enter button.

**QUIT**

- Press Quit button to exit any menu or page.

**Notes:**
Receiver Compass Page (cont.)

In Compass page, press Menu button to access Compass page options menu.
Big numbers shrinks compass, and allows only two data fields to be displayed.
Small numbers allows four smaller data fields and a larger compass to be displayed. Both graphics show examples of both.
Choose Fields option accesses 25 data field selections to choose from for the display.
When using a GPS compass with a magnetic compass for navigation, it’s wise to set both the same, such as true north, magnetic north (be sure magnetic declination on the compass and magnetic variation in the receiver match).
When using GPS compass with a map, the map will dictate how the GPS compass should be set (usually true north).

## Downloading a New Almanac

- To turn on the GPS unit, pushand hold the Power button.

- Initial screen appears. Wait until the first satellite signal bar turns solid black (diagram shows no signals acquired yet).

**Downloading a New Almanac**

**Notes:**
Downloading a New Almanac

To download a new almanac, turn on the receiver and find a place with an open view of the sky to facilitate signal acquisition. After the receiver acquires its first satellite signal and has a lock on it (signal strength bar turns solid), it can take up to 13 minutes for the receiver to fully download a new almanac.

Once an almanac has been downloaded, the receiver should be able to acquire satellites much more quickly in the future if the receiver remains in the same geographic area (within about a 300 mile radius).

## Downloading a New Almanac

- Every satellite continuously transmits almanac data as part of its signal.

- A GPS receiver need only acquire one satellite signal to begin downloading a new almanac. Wait 12-13 minutes after first satellite signal is acquired.

**Notes:**
Downloading a New Almanac

Why do GPS receivers need a current almanac? Recalling the Pre-Work reading, an almanac is a kind of log of all GPS satellite positions and health, and allows a GPS receiver to identify which satellites are in its hemisphere, and at what times. An almanac is like a  schedule telling a GPS receiver when and where satellites will be overhead. Transmitted continuously by all satellites, the almanac allows GPS receivers to choose the best satellite signals to use to determine position. The almanac is automatically downloaded from satellites whenever a receiver is collecting a GPS signal. An almanac can also be downloaded from a computer, a base station or other archived almanac. 

A problem occurs when a GPS receiver is not used for a long period of time (more than 30 days). The almanac stored in a receiver’s memory becomes outdated fairly quickly because new information is constantly being uploaded to the satellite constellation from Space Command. The GPS almanac tells a GPS receiver which satellites are functioning, which are “down” (not transmitting), and if there are any new satellites on line (remember that satellites are continuously being replaced). Without an updated almanac, a GPS receiver cannot effectively do its job.

How does a GPS receiver acquire a new almanac? When a GPS receiver is brand new, its almanac is almost certainly outdated, just as if a receiver has been left turned off for a long period of time. When this occurs it can seem to a user that the receiver is malfunctioning because it won’t quickly acquire satellite signals. In actuality it may only be an outdated almanac. There are three ways a GPS receiver can acquire a new almanac:
It can automatically download a new almanac once it acquires a GPS satellite signal. This takes about 12-13 minutes once a satellite signal is acquired. As long as a GPS receiver is turned on and providing current position information it has an updated almanac.
A current almanac can be downloaded from the Internet and uploaded to a GPS receiver via third party software. Global positioning base stations provide the almanac data for the web.
An almanac may be swapped among receivers either directly (via a cable link) or by disk and software using a computer.

## Power Down the GPS III Plus

- To turn off the GPS unit, pushand hold the Power buttonuntil the LCD screen goes blank.

**Notes:**
Power Down the GPS III Plus

## Navigation – Receiver Setup

- Setup receiver for navigation.
- Setup compass for navigation.
- Download new GPS almanac to receiver.

**Navigation – Receiver Setup**

**Notes:**

Navigation – Receiver Setup

Objectives:
Setup receiver for navigation.
Setup compass for navigation.
Download new GPS almanac to receiver.