Discovery 2 Metal (630-3004) Operation Faxback Doc. # 16644 Detector Detector Adjustment--Ground Setting: 1. Hold waist high and set Ground all the way up. 2. Set Sensitivity half way up. 3. Push Tune for Threshold tone. If not heard, then turn up Sensitivity. 4. Drop coil to half waist high. 5. Adjust Ground until tone does not change. (IR/all-08/22/95)