Novatel OM-20000122 Configuring Span with Align on SPAN-CPT, Chapter SPAN-CPT Dual-Antenna

Chapter 4			SPAN-CPT Dual-Antenna
	Figure 11: SPAN-CPT - Dual Antenna Installation
Primary GNSS Antenna		Secondary GNSS Antenna

Connect COM2 to COM2

COM 1

I/O

COM 2

SPAN	Secondary
Receiver	Receiver
(Master)	(Rover)
USB	USB
	Power Supply

4.2Configuring SPAN with ALIGN on SPAN-CPT

Before configuring the ALIGN solution, the two receivers MUST both be powered on and connected directly between COM2 of the SPAN receiver and COM2 of the second receiver through either a null modem cable or an appropriate radio connection.

The rover receiver must be an ALIGN-capable model, such as D2S-Z00-000, running the latest OEM6 firmware version.

To enable the dual-antenna ALIGN solution to aid the INS alignment and provide heading updates, the offset between the antennas and the IMU must be known. This is achieved by entering lever arms to both antennas, using the SETIMUTOANTOFFSET and SETIMUTOANTOFFSET2 commands.

To configure SPAN with ALIGN Aiding:

1.Enter the lever arm from the SPAN-CPT to the primary antenna (primary antenna is connected to the SPAN-CPT) using the SETIMUTOANTOFFSET command.

Abbreviated ASCII example:

SETIMUTOANTOFFSET 0.54 0.32 1.20 0.03 0.03 0.05

2.Enter the lever arm from the SPAN-CPT to the secondary antenna (secondary antenna is connected to the OEM6 receiver) using the SETIMUTOANTOFFSET2 command.

Abbreviated ASCII example:

SETIMUTOANTOFFSET2 0.54 2.32 1.20 0.03 0.03 0.05

38 SPAN-CPT User Manual Rev 8