Image Sensor Reticle - Topcon DS Series Instruction Manual

24. CHECKS AND ADJUSTMENTS
24.5

Image Sensor Reticle

The internal image sensor is used for automatic sighting. The offset value is set to correct the position
of the image sensor in relation to the telescope reticle, but if for whatever reason the telescope reticle
and image sensor become misaligned, automatic sighting of the center of the prism cannot be
performed correctly. Check and adjust it as outlined below.

• Perform check and adjustment in weak sunlight and no scintillation.
• It may take up to 20 seconds for an offset value based on the measurement results to appear.
• Use Standard prism Prism-2. Using other prism types may result in adjustment inaccuracies.
PROCEDURE Checks and adjustments
1. Carefully level the instrument.
2. Position the prism in a horizontal direction
approximately 50 meters from the instrument.
3. Select "Inst.cons." in <Settings>.
4. Select "Image Sensor-Reticle offset".
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