DS-635 FAQs & Troubleshooting DS-635 Not your product? Sort by: Updated Date Popularity 4 Results 1. 03/11/2020 Check the Serial Number 2. 12/04/2019 Acceptable Documents 3. 03/21/2019 What is Remote Setup? 4. 10/15/2018 I do not have or lost the black and white calibration sheet. Specification FAQs & Troubleshooting