It is possible to view distance from the smartphone to the sonar with the Deeper PRO+2, CHIRP+ or CHIRP+2 models.
This setting can be enabled when your sonar is set to Bait Boat or On-shore fishing mode. To enable it, access the sonar settings menu on the right side, and click the switch “Show Distance To Sonar”
Then, do the following:
Place your Deeper in the water up to 5 m (16 ft) from your smartphone and let it float in the water. Make sure Bait Boat or On-shore fishing mode is enabled.
Wait until the smartphone and Deeper GPS will acquire signal that is good enough for distance calculation. Strength of the signal will be indicated by the satellite icon, and will gradually turn from red (no GPS signal) to white (stable GPS signal is being acquired)
(!) When GPS signal is being acquired, we recommend keeping your smartphone stationary, and let the Deeper simply float in the water. This can take up to 20 minutes or even longer (depending on weather conditions, satellite availability, overhead obstacles such as trees, roof, etc.).
When GPS signal of the smartphone and the Deeper is good enough, you will see the distance measurement appear on the screen. Now, you can start casting your Deeper. However, do not reel in straight after the Deeper hits the water – give it few seconds to require GPS location and show the accurate distance.
(!) Keep in mind that GPS devices do not have perfect accuracy when determining location, so inaccuracies with distance measurement can be expected.