GPS Trimpack

DESCRIPTION - GPS TRIMPACK. The Trimpack is a GPS navigation receiver which provides world-wide, day/night, all weather position and velocity data. The Trimpack is a self contained GPS receiver and has an integrated antenna/preamplifier . The GPS Trimpack utilizes three sequencing signal processing channels to compute three dimensional position and velocity and to manage and maintain the satellite tracking process. The Trimpack receives GPS satellite signals using a fixed pattern antenna. The GPS Trimpack displays time-tagged position and velocity at intervals of approximately one second. Output information is communicated digitally via an RS-422 data channel at a data rate of 9600 baud. The GPS Trimpack allows for position readout in Universal Transverse Mercator ( UTM ), Latitude and Longitude ( LAT/LONG ), and Military Grid Reference System ( MGRS ).

CONTROL / INDICATOR	FUNCTION
1. L-R Switch	Moves the cursor within the display to select the field when user option selection or data entry is required.
2. INC-DEC Switch	Selects options, alter values, or change screens depending on the field that has been selected.
3. Rotary Knob	Selects mode of operation.
OFF	Turns GPS Trimpack off.
FIX	Computes a position fix ( within 3 minutes ) and displays it for 30 seconds, after which it automatically powers down.
POS	Computes a position fix, except that the position fix remains displayed until another mode is selected.
R + A	Displays the range, azimuth, and vertical difference from your present position to any 3 waypoints on a single screen.
NAV	Provides steering and other navigation data relative to user-selected waypoints.
WPT	Enables the user to enter waypoint designators and coordinate data for up to 26 waypoints.
OPS	Provides selectable functions that support other operating modes : COPY, CALCULATE, DISTANCE, and AVERAGING.
STS	Provides current status information concerning reception and maintenance conditions; to select operating parameters for the required application and communicate over the digital data port with other GPS Trimpacks.
4. Display	Provides information and cursor position to assist in data entry and selection.