HandyScan from GSSI Geophysical Survey Systems, Inc. 13 Klein Drive, P.O. Box 97 North Salem, NH 03073-0097 Phone: (603) 893-1109 / FAX: (603) 889-3984 e-mail: sales@geophysical.com web: www.geophysical.
Geophysical Survey Systems, Inc. HandyScan User's Guide Limited Warranty, Limitations Of Liability And Restrictions Geophysical Survey Systems, Inc. hereinafter referred to as GSSI, warrants that, for a period of 12 months from the delivery date to the original purchaser, GSSI's products will be free from defects in materials and workmanship.
Geophysical Survey Systems, Inc. HandyScan User's Guide FCC NOTICES: This device complies with part 15 of the FCC Rules: Operation is subject to the following conditions: 1. This device many not cause harmful interference, and 2.
Geophysical Survey Systems, Inc. HandyScan User's Guide Introduction HandyScan is a small-size, fully functional ground penetrating radar. It can instantly find the position and depth of metal and nonmetal bars, pipes and cables. It works in natural and man-made non-conductive materials (concrete, rock, sand, brick, water, and ice). It can also locate voids and measure the thickness floors and other structural elements.
Geophysical Survey Systems, Inc. HandyScan User's Guide HandyScan Layout Screen Start/Stop Battery status Keypad Back panel Screen displays data or setup table. Battery status is shown in the top right corner.
Geophysical Survey Systems, Inc. HandyScan User's Guide HandyScan Operation 1. Install a charged battery. 2. Turn power On (switch is located on the back panel). 3. Wait until data screen appears (about 15 sec). 4. Check battery indicator (top right corner of the screen). 5. If a low battery is indicated, turn system off and replace. Using Setup Table: 1. Press Set on the keypad to display setup table, then: • Up/down arrows to select a parameter, • Left/right arrows to change it. Disp.
Geophysical Survey Systems, Inc. HandyScan User's Guide Data Collection 1. Press and hold Start (single beep). 2. Move unit forward. 3. Slow down if signal sounds when moving. 4. Press Mark when desired to insert marks in data. 5. Release Start to finish (double beep). Start/Kill Switch The Start switch also has a deadman switch function. The FCC requires that when the operator stops interacting with the system for ten seconds, the transmitter is to be shut off.
Geophysical Survey Systems, Inc. HandyScan User's Guide Data Review 1. Use right/left arrow keys to scroll data. 2. Optimize data display: • Press Gain until best display of features is achieved. Gain status is shown at bottom left (Gain can be used during collection as well). • Press PRCS, then up/down arrow to change processing method. PRCS method used is shown at bottom center. • Use Set to modify display setup (contrast, amplitude, depth scale, etc.). 3.
Geophysical Survey Systems, Inc. HandyScan User's Guide Data Printout: 1. Install a charged battery in the printer. 2. Connect printer to the serial port (back panel) using the supplied cable and turn it On. 3. On setup screen, select Output to Printer. 4. Press Set to return to data screen 5. Press Print to print data. Note: For more details see the User's Guide for Seiko Instruments printer model DPU-3445-20.
Geophysical Survey Systems, Inc. HandyScan User's Guide Data Transfer to a PC Note: The file Handyfer.exe must be present on the PC. 1. Connect Handyscan and PC using a 9-pin null modem cable. 2. Start Handyfer.exe on the PC and select the appropriate data type (Grid Lines 1-13, 14-26 or Non-grid Data). On Handyscan: 1. On setup screen, select Output to computer (binary). 2. Set baud rate to 57600. 3. Press Set to return to data screen. 4. Press Print.
Geophysical Survey Systems, Inc. HandyScan User's Guide Collecting Grid Data 1. Secure the survey pad to the surface. 2. Start HandyScan as usual. 3. Make sure X-axis in setup table is set to distance. 4. Collect lines 1 to 13. • Press Start (double beep) and transfer the data to the PC (see Transfer above). 5. Collect lines 14 to 26. • Press Start (double beep) and transfer the data. 6. Save the grid file when prompted. Notes: • Start each line in the cross-hatched area (before the yellow contour).
Geophysical Survey Systems, Inc. HandyScan User's Guide Displaying Grid Data As Plan View 1. Complete grid data collection (above). 2. Open the grid file (*.dzt) in RADAN. 3. Click on StructureScan Process button . 4. Process and save the file (change the Radar Wave Velocity and repeat, if necessary, see next page). 5. Click on Depth Slices button . 6. Select desired Maximum Depth. 7. Drag a corner of the plan view to enlarge. 8. Right-click and select Display Gain (and slice thickness, if desired).
Geophysical Survey Systems, Inc. HandyScan User's Guide Radar Wave Velocity Adjustments 1. Automated processing includes Migration which removes hyperbolic reflections from the data. Migration requires Radar Wave Velocity to be set within ½ in/ns of the exact value. 2.
