Description:
OSD-GPS+™ with GPS Carrier Board is an on-screen composite video overlay device that overlays GPS (Global Positioning System) latitude, longitude, heading (track), speed, altitude, date, and time onto any incoming NTSC or PAL composite video source such as a color video camera. In addition to displaying GPS information, the OSD-GPS+™ with GPS Carrier Board can also display a user defined message as well as real-time distance and bearing to a user defined waypoint. The OSD-GPS+™ with GPS Carrier Board produces a self-generated screen if no video input source is available. OSD-GPS+™ with GPS Carrier Board includes a high precision internal GPS receiver and an external SMA GPS antenna connector.
Specifications:
- Dimensions: 2.5" L x 2.5" W x .7" H
- Weight: 1.1 oz. (with OSD-GPS+™ module installed)
- RoHS compliant: Yes
- Input voltage: 7.0 to 14.0 volts DC (200 ma max. without antenna)
- Operating temperature: -40C to +85C (extended temperature range standard)
- Video format: Composite video
- Video level: 1 volt peak to peak
- Video impedance: Input 75 ohm, output 75 ohm resistively terminated
- Speed format: MPH, KPH, and knots
- Altitude format: Feet and meters
- Heading (track) format: Compass cardinal points (e.g. NW) and degrees
- Time format: UTC with user time zone adjustment
- Date format: mm/dd/yy and dd/mm/yy
- User custom message length: 10 characters
Internal GPS Receiver Specifications:
- Receiver: L1 C/A code, 65-channel
- Position Accuracy: 2.5 meters CEP
- Velocity Accuracy: 0.1 meters/sec
- Time Accuracy: 300ns
- Startup Time: 29 second warm/cold start under open sky (average)
- Sensitivity: -161dBm tracking
- Update Rate: 1, 2, 4, 5 Hz (1 Hz default)
- Dynamics: 4G (39.2m/sec2)
- Operational Limits: Altitude < 18,000 meters and velocity < 515 meters/sec (simultaneously)
- External Antenna: Active, 3.3 or 5.0 Volts DC with gain up to 30dB and noise figure less than 2db
Antenna Specs:
- Dimensions: 0.7" L x 0.7" W x 0.2" H
- Connector: Male SMA
- Cable Length: 3.0”
- Weight: 0.3 oz.
- Input Voltage: 3.3 to 5.0 volts DC (20 ma max.)
- Operating Temperature: -40C to +85C
Connecting Solder Pads:
Solder Pads: +12VDC (J1)| Pad | Description |
| +12VDC | 7.0 to 14.0 volts DC input |
| GND | Ground |
Solder Pads: VIDEO IN (J3)
| Pad | Description |
| VIDEO IN | Video Input |
| GND | Ground |
Solder Pads: VIDEO OUT (J4)
| Pad | Description |
| VIDEO Output | Video Output |
| GND | Ground |
Solder Pads: Parallel Buttons (P1)
Note: P1 solder pad block is wired in parallel to the MENU, UP, DOWN, and ENTER buttons
Dip Switch Configuration:
OSD-GPS+™ with GPS Carrier Board comes configured for NTSC video format and a 1 Hz (once per second) GPS update rate. Reconfigure these settings using the onboard DIP switches.| DIP # | Description |
| 1&2 | GPS Update Rate: DIP 1 DIP 2 Update OFF OFF 1 Hz OFF ON 2 Hz ON OFF 4 Hz ON ON 5 Hz |
| 3 | NTSC or PAL video format OFF = NTSC ON = PAL |
| 4 | Firmware flash update OFF = Normal operation ON = Firmware flash mode |
Note: DIP switch inputs are only checked during power-up.
On-Screen Menu Configuration:
At any time press the "MENU" button to enter the on-screen menu configuration. The "UP", "DOWN", and "ENTER" buttons move the cursor and change the settings. All configuration information is stored in non-volatile memory so information is retained even with loss of power to OSD-GPS+ with GPS Carrier Board.
Main Menu:
| Menu Option | Action / Setting |
| Enable GPS Overlay |
|
| Display Options Menu... | Display the Options Menu |
| Field Formatting Menu... | Display the Field Formatting Menu |
| GPS Diagnostics... | Display raw GPS NMEA sentences |
| Save Changes and Exit | Save changes and exit the Main Menu |
| Discard Changes and Exit | Discard changes and exit the Main Menu |
Display Options Menu:
| Menu Option | Action / Setting |
| Screen Layout | Select an on-screen GPS field layout format
|
| Backgnd Frame |
|
| Show Status |
|
| Show Altitude |
|
| Show Ranging |
|
| Show User Msg |
|
| User Message | Enter an optional 10 character on-screen message
|
| Main Menu | Return to Main Menu |
Field Formatting Menu:
| Menu Option | Action / Setting |
| Altitude |
|
| Speed |
|
| Heading |
|
| Ranging |
|
| Date |
|
| UTC Offset | Time offset from UTC (-12 through +12) e.g. -5 is EDT
|
| Main Menu | Return to Main Menu |
Operation:
After power is applied OSD-GPS+™ with GPS Carrier Board performs the following operations:- Establish communications with the internal GPS receiver
- Wait for the GPS receiver fix with a minimum of 4 satellites
- Update the on-screen fields after each valid NMEA GPRMC and GPGGA sentence is received from the internal GPS receiver
- Check for “MENU”, “UP”, and “DOWN” button presses
At any time press the "MENU" button to enter the on-screen menu configuration.
Status Icon:
If the “Show Status” option is enabled (by default) the following icons may appear:| Icon | Status |
 |
No or invalid communications with the internal GPS receiver |
 |
The internal GPS receiver does not have a satellite fix |
“GPS FIX” LED:
The “GPS FIX” LED illuminates when the internal GPS receiver has a fix with a minimum of 4 satellites. A GPS fix is required for on-screen GPS information to update.
Distance and Bearing to Waypoint:
If the “Show Ranging” option is enabled then distance and bearing information from the current location to the user defined waypoint is displayed in real-time.
At any time while there is a GPS fix press the “UP” button to set the current location as the waypoint. Pressing the “DOWN” button will clear the waypoint. It is not necessary to clear the waypoint before setting it again.
Trouble Shooting Tips:
| Problem | Solution |
| Green Power LED will not illuminate OSD-GPS+™ with GPS Carrier Board will not turn on |
|
| Blinking Clock icon |
|
| Blinking Satellite Dish icon Yellow "GPS FIX" LED off No GPS information on-screen or fields do not update |
|
| On-screen text is difficult to read |
|