Connect the IMU to the OEM7 Receiver Card

The method used to connect the IMU depends on the IMU and OEM7 receiver in the system. IMUs that are contained within an IMU enclosure communicate with the OEM7 receiver using a serial port. IMUs not contained in an IMU enclosure communicate with the OEM7 receiver either through an interface card (MIC or UIC) or direct connection (SPI or Serial).

IMUs in an enclosure typically have IMU or UIMU at the start of their names (for example, IMU-ISA-100C, IMU-µIMU-IC or IMU-IGM-S1).

IMUs not in an IMU enclosure typically have OEM at the start of their names (for example, OEM-IMU-ISA-100C, OEM-IMU-µIMU or OEM-IMU-STIM300).

IMU Connection Method

IMU

Interface Card

Event Signal

Receiver Connection Method

Receiver

IMU-CPT

No

Event Out

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-FSAS

No

Event Out

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-KVH1750

No

Event Out

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU‑P1750

No

Event Out

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-H58
IMU-H62

Yes - Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

UIMU-HG1700-A58
UIMU-HG1700-A62

Yes - Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-HG1900

Yes - Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-ISA-100C

Yes - Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-LN200
IMU-LN200C

Yes - Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU‑LN200 (SPAN IMU enclosure)

Yes - Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

UIMU-LN200

Yes - Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-µIMU-IC

Yes -Enclosure

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-IGM-A1

Yes - Enclosure

N/A

Serial port (RS-232 or RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

IMU-IGM-S1

Yes - Enclosure

N/A

Serial port (RS-232 or RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

OEM-IMU-HG1900

Yes - SDLC or UIC

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

OEM-IMU-HG1930

Yes - SDLC or UIC

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720

OEM-IMU-ISA-100C

Yes - UIC

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720

OEM-IMU-µIMU

Yes - UIC

N/A

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

OEM‑IMU‑µIMU‑IC‑UART

No

Event In

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

OEM-IMU-STIM300

No

Event In

Serial port (RS-422)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

OEM-IMU-HG4930

No

PPS

Serial port (TTL)

OEM719, OEM729, OEM7600, OEM7700, OEM7720, PwrPak7

OEM-IMU-ADIS-16488

No

Event In & Event Out

SPI port

OEM7600, OEM7700, OEM7720

OEM-IMU-EG320N

No

Event In

SPI port

OEM7600, OEM7700, OEM7720

OEM-IMU-EG370N

No

Event In

SPI port

OEM7600, OEM7700, OEM7720

Connect an IMU Enclosure to an OEM7 Receiver Card Using a Serial Port

An interface is needed between the OEM7 receiver card and IMU that provides:

  • Communication signals to the OEM7 receiver

  • A serial port connection between the IMU and receiver

  • Power to the receiver

  • Power to the IMU

For information about the interface requirements for the OEM7 receiver card, see Preparing the Data, Signal and Power Interface.

For information about the interface to the IMU, refer to the technical specifications of the IMU in IMU Technical Specifications.

The interface between the OEM7 receiver card and IMU must include circuitry to convert from the LVCMOS signal levels of the receiver COM port to the RS-232 or RS-422 signal levels of the IMU COM port.

The exception is COM1 on the OEM729 which provides either RS-232 or RS-422 signal levels.

If using an IMU-KVH1750 or IMU-P1750 not purchased through NovAtel, the baud rate of the IMU must be changed to 460,800 bps and the output method changed to MSYNC,EXT. For information about changing these parameters, see IMU-KVH1750 and IMU-P1750 Baud Rate Conversion.

Connect an OEM IMU to an OEM7 Receiver Card Using a UIC

The UIC provides power to the IMU and communication between the IMU and receiver. For information about using a UIC, see UIC Installation.

Connect an OEM IMU to an OEM7 Receiver Card Using a MIC

The MIC provides power to the IMU and communication between the IMU and receiver. For information about using a MIC, see MIC Installation.

Connect an OEM IMU to an OEM7 Receiver Card Using a Direct Connection

Some OEM IMUs can communicate with the OEM7 receiver card with out using an interface card. For information about using a direct connection, see: