OEM7 Receiver Card Overview

In addition to the NovAtel OEM7 receiver card, an OEM7 receiver system requires the following:

  • Enclosure and wiring harness

  • Power supply

  • Data communications equipment

  • GNSS antenna

An OEM7 receiver system is illustrated in Figure: OEM7 Receiver System and described in the sections that follow.

OEM7 Receiver System

OEM7 Family Card

NovAtel’s OEM7 family cards consist of a Radio Frequency (RF) section and a digital section.

Radio Frequency (RF) Section

The receiver obtains GNSS signals from the antenna. The RF section down converts the incoming RF signals to Intermediate Frequency (IF) signals which are processed by the digital section. The RF section also supplies power to the active antenna Low Noise Amplifier (LNA) through the coaxial cable. The RF section has been designed to reject common sources of interference.

Digital Section

The heart of the digital section is NovAtel’s MINOS7 ASIC (Application Specific Integrated Circuit). The digital section digitizes and processes the IF signals to obtain a GNSS solution (position, velocity and time). It also processes the system I/O, shown in Figure: OEM7 Receiver System.

Enclosure

An enclosure is necessary to protect the OEM7 receiver card from environmental extremes (moisture, dust, etc.).

GNSS Antenna

The receiver can supply power for the antenna LNA. If the antenna is not compatible with the OEM7 power supply (5 VDC), an external LNA supply may be required.

Power Supply

A power supply capable of delivering the minimum receiver operating voltage and power is required. See Power Supply Requirements for Receiver Cards for details.

Optional External Frequency Reference

When applications require greater precision than the OEM7 internal clock, connect the receiver to an external high stability oscillator. See External Oscillator for more information.

An External Oscillator is supported only on the OEM729.

Data Communications Equipment

A computer or other data communications device is necessary to communicate with the receiver and to receive and store the data that the receiver provides.