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.com
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. EXCEPT FOR THE FOREGOING
LIMITED WARRAN TY, GSSI DISCLAIMS ALL WARRAN TIES, EXPRESS OR
IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. GSSI's obligation is limited to repairing or replacing
parts or equipment which are returned to GSSI, transportation and insurance pre-paid,
without alteration or further damage, and which in GSSI's judgment, were defective or
became defective during normal use.
GSSI ASSUMES NO LIABILITY FOR ANY DIRECT, INDIRECT, SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR INJURIES CAUSED BY
PROPER OR IMPROPER OPERATION OF ITS EQUIPMENT OR SOFTWARE,
WHETHER OR NOT DEFECTIVE.
Before returning any equipment to GSSI, a Return Material Authorization (RMA)
number must be obtained. Please call the GSSI Customer Service Manager who will
assign an RMA number. Be sure to have the serial number of the unit available.
GSSI does not convey any license under its patent or other intellectual property rights or
the rights of others.
: Information in this manual is subject to change without notice. Please
Note
consult the manual updates supplied with your system and contact GSSI with
any additional questions.
Copyright© 2001 Geophysical Survey Systems, Inc.
All rights reserved including the right of reproduction
in whole or in part in any form
Published by Geophysical Survey Systems, Inc.
13 Klein Drive
North Salem, New Hampshire 03073-0097
Printed in the United States
GSSI, HandyScan and RADAN are registered trademarks of Geophysical Survey
Systems, Inc.
MN70-416
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. This device must accept any interference received, Including interference that may
cause undesired operation
Warning: Changes or modifications to this unit not expressly approved by the party
Coordination Requirements.
(a) UWB imaging systems require coordina tio n thr ough the FCC before the equipment
may be used. The operator shall comply with any constraints on equipment usage resulting from
this coordination.
(b) The users of UWB imaging devices shall supply detailed operational areas to the
FCC Office of Engineering and Technology who shall coordinate this information with the Federal
Government through the National Telecommunications and Information Administration. The
information provided by the UWB operator sh all include the name, address and other pertinent
contact information of the user, the desired geographical area of operation, and the FCC ID
number and other nomenclature of the UWB device. This material shall be submitted to the
following address:
Frequency Coordination Branch., OET
Federal Communications Commission
445 12
Washington, D.C. 20554
ATTN: UWB Coordination
(d) Users of authorized, coordinated UWB systems may transfer them to other qualified users
(e) The NTIA/FCC coordination report shall includ e any needed constraints that apply
to day-to-day operations. Such constraints could specify prohibited areas of operations or areas
located near authorized radio stations for which additional coordination is required bef ore
operation of the UWB equipment. If additional local coordination is required, a local coordination
contact will be provided.
(f) The coordination of routine UWB operations shall not take longer than 15 business
days from the receipt of the coordination request by NTIA. Special temporary operations may be
handled with an expedited turn-around time when circumstances warrant. The operation of UWB
systems in emergency situations inv olving the safety of life or property may occur w ithout
coordination provided a notification procedure, similar to that contained in CFR47 Section
2.405(a)-(e), is followed by the UWB equipment user.
NOTICE: Use of this device as a wall imaging system is prohibi ted by FCC regulations.
responsible for compliance could void the user’s authority to operate the
equipment.
Operation of this device is restricted to law enforcement, fire and rescue officials,
scientific research institutes, comme rcial mini ng companies, and construction
companies. Operation by any other party is a violation of 47 U.S.C. § 301 and
could subject the operator to serious legal penalties.
th
Street, SW
and to different locations upon coordination of change of ownership or location to the FCC and
coordination with existing authorized operations.
MN70-416
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.
HandyScan allows the user to:
Collect
•
plan viewing (page 8).
Review
•
features (page 5).
Print
•
system (page 6).
Transfer
•
processing in RADAN software (page 7).
Display
•
(page 9).
single lines of data (page 4) or grid data for
data on screen, determine position and depth of
data on the Seiko DPU-3445-20 printer supplied with the
data to a PC in GSSI (*.dzt) format for storage and
plan views (Depth Slices) of grid data on a PC screen
Specifications
Survey depth
Max survey length
Size
21 x 15 x 14.5 cm
Weight
Display
2.4 lbs
LCD, B&W w/back lighting
Battery life
MN70-416 1
20-30 cm
15 m
2 hours
Geophysical Survey Systems, Inc. HandyScan
User's Guide
HandyScan Layout
Screen Battery status
Start/Stop Keypad Back panel
Screen
Battery status
Back Panel
displays data or setup table.
is shown in the top right corner
:
On/Off switch
Serial port
External power connector (9V)
MN70-416 2
.
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. Direction:
Disp. Mode :
Amplitude :
X-axis :
Depth :
Contrast :
Date/time :
Data_No. : 1
Dist adj. :
Output :
Baud rate :
Default : NO
normal / invert
B / AB
abs / offset
distance / time
ns / -3 to 3
(number)
05/10/2001
+0 [0.00m]
printer / computer
57600
MN70-416 3
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. This will also
close the data file that you have been acquiring. Thus you will
need to keep the Start switch on the handle depressed at all times
during data collection.
Note
:
• Pressing Start one more time will erase the data.
• Print the data or transfer them to a PC if you wish
to keep the record before collecting the next line.
• The HandyScan can store 15 m (50 ft) of data. The unit will
stop collecting data after this amount has been reached.
You will need to start a new file to resume collecting data.
• The HandyScan displays axes in metric units only, but the
same data can be later displayed using RADAN NT
software on a PC in metric or English units.
MN70-416 4
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. Label targets:
• Use arrow keys to move the cursors and locate targets. The
cross-hair X (position) and Y (depth) are displayed in the
top left corner.
• Press Mark to label a target and display its X-Y along the
right edge of screen (up to 7 targets).
Note
:
It is possible to transfer non-grid data to a PC and review
them on the PC screen, taking advantage of a higher quality
display and (if installed) processing capability of RADAN
software. Please see Data Transfer (page 7) and RADAN manual
for instructions on processing.
MN70-416 5
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.
MN70-416 6
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.
Displays scan # during transfer
When the data transfer is finished, PC will prompt you
to save data.
MN70-416 7
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).
• Stay centered on the line.
• Press Mark at the end of each line.
• At the end of line 13 and 26:
• Press Mark.
• Then press Start (double beep) to end the file.
MN70-416 8
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).
9. View depth slices using the Slice Depth box.
10. Use mouse cursor to determine positions of targets (see below).
Use this information to mark targets on the paper pad.
11. Print the plan view or copy to clipboard as appropriate.
MN70-416 9
10.0 in 15.0 in
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. The exact velocity is usually not known, thus trial-and-error is
the best way to determine it:
• After first processing, maximize Display Gain and see if
the hyperbolas have collapsed into dots:
Raw Data
Velocity too high Correct Velocity too low
•
Correct velocity – data can be viewed in Depth Slices
• Velocity too high or too low – process again, respectively
decreasing or increasing velocity in
½ in/ns steps until image looks correct.
MN70-416 10
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