Chapter 2 SPAN Installation
OEM7 SPAN Installation and Operation User Manual v14
53
1. Open a command terminal at 921,600 baud via an RS-422 serial link.
By default, the IMU will output 0.5 Hz binary messages which will help confirm you are connected properly.
2. Issue the following two commands in sequence to enter configuration mode and change the baud rate.
=CONFIG,1
=MSYNC,EXT
=BAUD,460800
3. Upon completion of these commands, power cycle the IMU to boot up in the new baud rate.
4. Confirm the change by connecting to the IMU at 460,800 baud and verifying the incoming messages.
The new baud rate configuration is saved to the IMU NVM automatically so the process is complete and the IMU is
ready for use with an OEM7 receiver.
Use an OEM6 Receiver Command
OEM6 firmware as of version OEM060631RN0000 (Dec 2016) includes the
IMUCONFIGURATION
command
that internally configures the KVH1750 IMU for SPAN communication. Three sets of configuration options are
available, two of which allow changing the baud rate of the IMU to either 921,600 or 460,800. This provides cus-
tomers upgrading to OEM7 an easy method to modify the baud rate. To change the IMU to 460800 baud, use the
following procedure:
1. Connect the KVH-1750 IMU to an RS-422 capable OEM6 receiver communication port.
2. Issue the following command.
CONNECTIMU COM# IMU_KVH_1750
3. Issue the following command.
IMUCONFIGURATION IMU_KVH_1750 2
The
IMUCONFIGURATION
command can be used to configure a KVH17xx IMU depending on the value of the
Option field.
IMUCONFIGURATION IMUType [Option]
IMU Type
Option
Configuration Details
IMU_KVH_1750
0
Configure KVH options for NovAtel communication.
1
Change KVH baud rate to 921,600
2
Change KVH baud rate to 460,800
2.1.6 Connect Power
If you are using a MEMS OEM IMU (ADIS-16488, HG1900, HG1930, STIM300) and a MIC, see
on page 56 for information about connecting and powering the MIC and IMU.
If you are using an OEM IMU (ISA-100C, HG1900, LN200 or µIMU) and a UIC, see
on page 67 for information about connecting and powering the UIC and IMU.