BH20107A - Disciplined OCXO with GPS receiver JUPITER
Jupiter is GPS (Global Positioning System) module receiver from NAVMAN company. That's a single-board,
12 parallel-channel receiver intended as a component for an Original Equipment Manufacturer (OEM) product. The receiver continuously tracks all satellites in view and provides accurate satellite positioning data. Jupiter is designed for high performance and maximum flexibility in a wide range of OEM configurations including handhelds, panel mounts, sensors, and in-vehicle automotive products.
GPS receiver JUPITER (top view)
GPS receiver JUPITER (bottom view)
The Jupiter receiver decodes and processes signals from all visible GPS satellites. These satellites, in various orbits around the Earth, broadcast radio frequency (RF) ranging codes, timing information, and navigation data messages. The receiver uses all available signals to produce a highly accurate navigation solution that can be used in a wide variety of end product applications. This solution is relatively immune to the position jumps induced by blockage that can occur in receivers with fewer channels.
The Jupiter receiver (shown in Figures 1 and 2) is packaged on a miniature printed circuit board with
a metallic RF enclosure on one side. The receiver is available in four configurations. The Jupiter
requires +3.3 or +5.0 V primary DC input power depending on the configuration. The receiver can operate from either an active or passive GPS antenna, supplied by the OEM, to receive L-band GPS carrier signals.
Communication with the receiver is established through one of two asynchronous serial I/O ports
that support full duplex data communication. The receiver's serial port outputs navigation data and accepts
commands from the OEM application in proprietary NAVMAN binary message format. NMEA formatted message protocol is also available with software and/or hardware selection.
The Jupiter receiver has two output timing signals: 10 kHz and 1PPS. The 10 kHz timing signal can be used for frequency standard construction.
The BH20107Q2 is a circuit board to accommodate the JUPITER GPS receiver from the bottom side. The board accept both 5V and 3.3V JUPITER versions. On top the board is Millieren 10 MHz OCXO controlled by CPLD from Microcomputer. The board has three Serial Ports (two are from GPS receiver and one from Microcomputer). Microcomputer calculates the OCXO deviation, corrects the OCXO, and sends the calculated error via serial interfaces for display. The calculated errors can be stored in EEPROM together with the date and time. The board has high precisious RTC.
Board requires +5V, +3.3V and ±12V power supply. Active GPS antenna (if available) can be powered through Jupiter GPS. The JUPITER receiver's SRAM is backed up by a rechargeable 1-cell lithium battery from the board.
The Prited Circuit Board has four layers and size 99 x 93 mm.
Printed Circuit Board (top side)
Printed Circuit Board (bottom side)
|
