CHC i83 User Manual 18
https://igage.com/out/CHC/faq/CHCiXXwithCarlsonSurvXX608_r002.pdf
Using the IMU based Tilt Compensation
The i83 receiver has a built-in, 4
th
generation accurate, 200 Hz fast, IMU based tilt compensator function. This allows the
receiver to report the position of the pole tip, not the location below the receiver.
Once the receiver has a GNSS Fixed position, you need only move a few meters in any direction, then stop for a moment
and the IMU should immediately initialize.
Once the IMU is initialized, if you move a few millimeters every 10 seconds, the IMU will continue to work. If you stop
movement, for example attach a bipod, the IMU will ‘float out’. Typically, you need only move a centimeter to instantly
reinitialize.
If the receiver loses fix, then the IMU will lose initialization.
1.
The H.I. (pole height) of the instrument must be correctly entered in the field software
. This setting is communicated
to the receiver, and it must be correct!
2. The receiver must have a clean RTK FIX to initialize tilt.
3. Usually, it is sufficient to move a few feet with the receiver fixed to fully initialize tilt.
3. If the pole is held still for 30-seconds, or the pole is violently moved (for example the point hitting the ground) tilt
initialization will be lost.
4. The pole should be held relatively still while measurements are averaged.
5. Initialization will be required:
When the receiver is turned on.
When the IMU is turned on from the disabled state.
When the pole is tilted more than 65 degrees from vertical.
When the receiver is stationary (on a tripod) for more than 10-minutes.
When the pole hits the ground sharply.
6. The IMU is always disabled for
Verified survey
and
Control survey
operation.
Connecting to a PC or Smartphone via Wi-Fi
The receiver has an internal Wi-Fi Access Point which can be used in conjunction with a PC or smartphone to configure
and control every feature of the receiver including firmware updates.
Wi-Fi turns off after 15-minutes to Save Power
To save power, if the Wi-Fi modem is not in use for 15-minutes it may power down, even when Wi-Fi is enabled. Clicking
either front panel button will enable it again.
Connecting a computer or Mobile Device
Device Wi-Fi Overview:
SSID: GNSS-####### device-serial-number
Wi-Fi Key: (open) if a Wi-Fi Password is requested, try
12345678
Address: 192.168.1.1
port: 80
User Name: admin lower case
password: password lower case
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