Connect Power

If you are using a MEMS OEM IMU (OEM-IMU-ADIS-16488, OEM-HG1900, OEM-HG1930, OEM-IMU-STIM300) and a MIC, see MIC Installation for information about connecting and powering the MIC and IMU.

If you are using an OEM IMU (OEM-IMU-ISA-100C, OEM-HG1900, OEM-LN200 or OEM-IMU-µIMU-IC) and a UIC, see UIC Installation for information about connecting and powering the UIC and IMU.

Receiver Power

The power requirements for the OEM7 family receiver cards are shown in Power Supply Requirements for Receiver Cards. For information about connecting power to an OEM7 receiver card, see Applying Power to the Receiver Card.

The power requirements for the PwrPak7 are shown in the Power Supply Requirements for the PwrPak7. For information about connecting power to a PwrPak7, see Connect Power to the PwrPak7.

IMU Power

In addition to the receiver power supply, a power supply is needed for the IMU. See Table: IMU Power Supply for the voltage requirements for each IMU. The same power supply can be used for the receiver and the IMU, if the power supply meets the power requirements of both devices.

IMU Power Supply

IMU

Power Requirement

Recommended Fuse

IMU-CPT

+9 to +18 VDC

2.0 A slow blow

IMU-FSAS

+10 to +34 VDC

2.0 A slow blow

IMU-HG1900

+10 to +34 VDC

1.8 A slow blow

IMU‑IGM-A1

+10 to +30 VDC

0.5 A slow blow

IMU-IGM-S1

+10 to +30 VDC

1.0 A slow blow

IMU-ISA-100C

+10 to +34 VDC

2.5 A slow blow

IMU-KVH1750

+9 to +36 VDC

1.25 A slow blow

IMU-P1750

+9 to +36 VDC

1.25 A slow blow

IMU-LN200
IMU-LN200C

+10 to +34 VDC

2.5 A slow blow

IMU-µIMU-IC

+10 to +34 VDC

1.8 A slow blow

UIMU-HG1700-AG58
UIMU-HG1700-AG62

+12 to +28 VDC

1.8 A slow blow

UIMU-LN200

+12 to +28 VDC

1.8 A slow blow

OEM-IMU-ADIS-16488
(direct connection)

+3.3 VDC

0.5 A slow blow

OEM-IMU-EG320N
(direct connection)

+3.3 VDC

0.25 A slow blow

OEM-IMU-EG370N
(direct connection)

+3.3 VDC

0.25 A slow blow

OEM-IMU-HG4930
(direct connection)

+5.0 VDC

1.6 A slow blow

OEM-IMU-STIM300
(direct connection)

+5.0 VDC

0.63 A slow blow

OEM-IMU-µIMU-IC-UART
(direct connection)

+5.0 VDC

2.5 A slow blow

For most IMUs, connect the power leads on the IMU interface cable to the IMU power supply.
For an IMU in the IMU Enclosure (IMU-HG1900, IMU-ISA-100C, IMU-LN200 or IMU-µIMU-IC), connect the IMU Power Cable (NovAtel part # 60723136) from the IMU to the IMU power supply.

The IMU Power Cable has four power leads, two positive (VIN+) and two negative (VIN-). Typically, all four wires are connected to the power supply. However, the IMU Enclosure can be powered from a single pair (VIN+ and VIN-). This is beneficial in systems with a backup power supply as one pair can be connected to the main power supply and the second pair can be connected to the backup power supply.

When connecting all four wires, ensure both positive lines pass through a single appropriately rated fuse. For the backup power configuration, both positive lines need an appropriately rated fuse.

Details about the IMU ports and cables can be found in IMU Technical Specifications.