Intuitive Circuits, LLC
Home PageProducts MenuOrdering MenuDownloads MenuCustomer Applications MenuRelated Links MenuContact Us MenuView Cart Menu
On-Screen Display Products Menu
DTMF products menu
GPS products menu
Amateur television products menu
Miscellaneous products menu
Miscellaneous products menu
On-screen display products


Discontinued Product - No Longer Available for Ordering - See Our GeoStamp+® Product



GeoStamp™ overlays GPS (Global Positioning System) latitude, longitude, heading, speed, altitude, date, time, and a user defined message onto a self-generated blue screen or any incoming video source such as a black-and-white or color camera. The video output can be transmitted or recorded for an exact, permanent record of where and when an event occurs. GeoStamp requires a NMEA 0183 compatible GPS receiver like the Garmin GPS35-PC. NTSC and PAL versions available.



  • Dimensions: 4 1/4" x 3 1/2" x 1 1/4"
  • Weight: 6.7 oz.
  • Input voltage: 8.0 to 14.0 volts DC (65 ma max.)
  • DC jack: 2.1 mm x 5.5 mm, center tip positive
  • Operating temperature: -10 C to +70 C
  • Video level: 1 volt peak to peak
  • Video impedance: Input 75 ohm, output 75 ohm resistively terminated
  • GPS input: NMEA 0183 4800 baud GPRMC sentence, GPGGA sentence required for altitude
  • Altitude units: Off, meters, or feet
  • Speed units: Knots or miles per hour
  • Time/Date: UTC
  • User custom message length: 10 characters


GeoStamp™ has four connectors (see figure 3.)



VIDEO IN (optional)
  • Leave disconnected if "blue screen" mode selected
  • Attach noise free NTSC (or optional PAL) video source if "overlay" mode selected
  • Attach to monitor, VCR, video transmitter, etc.
  • Pin 2 - Attaches to GPS receiver serial out
  • Pin 5 - Attaches to GPS receiver serial ground
  • DC IN
  • +8 to +14 volts DC
  • 2.1 mm x 5.5 mm DC coax plug, center tip positive


    To configure GeoStamp press and hold the MENU button while applying power to the unit. Upon release of the MENU button the configuration menu will appear (see figure 1.0) At any time pressing the MENU button once again will exit you from the configuration menu.


    The UP and DOWN buttons move the option cursor (triangle on left.) The ENTER button changes the setting for the selected option (e.g. "Mode:") The small arrow indicates the current setting (e.g. "Overlay").


    The optional 10 character user message is entered by the following method:

    1. Move the cursor down to the "Message:" option and press ENTER
    2. The first character in the message will begin to blink
    3. Cycle through the character set by using the UP and DOWN buttons
    4. Press ENTER to select the character
    5. Repeat the process for all 10 characters

    Note: To expedite character entry press the UP and DOWN buttons simultaneously to generate a space character. All configuration information is stored in non-volatile memory so information is retained even with loss of power to GeoStamp.


    GeoStamp Configuration Menu



    Upon applying power, GeoStamp displays a logo screen with custom user message while searching for valid satellite data from the GPS receiver. Once valid satellite data is received then the real-time information is displayed. GeoStamp updates the screen after each valid GPRMC and optional GPGGA (for altitude) sentences are received from the GPS receiver. The fields displayed are: Latitude (North/South), Longitude (East/West), Heading (course over ground in degrees), Speed (mph or knots), Date and Time (UTC universal time), and optional altitude (meters or feet.)


    Note: GeoStamp can become passive (video passed through with no text overlay) by holding down the ENTER button and applying power to the unit.


    Warranty & Service:

    If the product fails to perform as described in our product description or specification, within 90 days from the date of shipment to the buyer, we will repair or replace the product and/or accessories originally supplied. Failure due to improper installation, misuse, abuse or accident is not covered by this warranty. Incidental and consequential damages are not covered by this warranty.The buyer must obtain a Return Material Authorization by calling (248) 588-4400, and shipping the defective product to Intuitive Circuits, 3928 Wardlow Ct., Troy, MI 48083, freight prepaid. After the warranty expires, we will promptly supply an estimate for the repair cost.



    GeoStamp Rear View

    Home:Products:Ordering:Downloads:Customer Apps:Related Links:Contact Us