Before Scanning with a Frequency Image scanner  or Frequency Image Metal Detector Scanner you can use the Adjustments (settings) to Separate and Discriminate the Targets or the Separation and Discrimination in the Image Metal Detector Scanner or Ground Penetrating Radar or GPR is by Specifying the Adjustments (settings)  that can determine the type of Target on The  software will reveal on the screen and the Determination and Separation of the Target or Metals or Gold and Silver in the Frequency Image Metal Detector Scanner or GPR Scanner Depends on the type of its circuit design and the best Separation and Discriminates of the Target or Metals or Gold and Silver belongs to the Frequency Image Metal Detector Scanner or GPR is of the Frequency type whose circuit is designed according to the principles of Frequency Radar and the Frequency emission in the Frequency Image Metal Detector Scanner or GPR operates with Radar circuits with Low Frequency emission and it is the Low Frequency that Penetrates Deep into the Ground and the type Determining the settings in the VDI Number in the Edit and Threshold is the Surface and Size or shallow which Separates and Discriminates the Targets from each other in the return reflection of the field of metals and Gold and silver.