GDD GRx2 User manual

IP RECEIVER
Model GRx2
Instruction Manual
860 boul. de la Chaudière, suite 200
Québec (QC), Canada, G1X 4B7
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Web site: www.gdd.ca

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1Introduction.....................................................................................................4
2GRx2 accessories..............................................................................................5
3GRx2 components ............................................................................................7
4Power ..............................................................................................................9
5Quick start guide............................................................................................11
6RS232/Bluetooth communication...................................................................21
7Cold weather and harsh environments tips.....................................................22
8Tools menu ....................................................................................................23
8.1 Config option .............................................................................................25
8.1.1 Setup........................................................................................................25
8.1.2 Position ....................................................................................................27
8.1.3 Windows ...................................................................................................29
8.1.4 Synchronization ........................................................................................34
8.2 Special option ............................................................................................38
8.2.1 Reinit........................................................................................................38
8.2.2 Simulation.................................................................................................39
8.2.3 Signal Processing Options ..........................................................................43
8.2.4 Battery type ..............................................................................................44
8.2.5 Open Port..................................................................................................45
8.3 Show option ..............................................................................................47
8.3.1 Hotkeys .....................................................................................................47
8.3.2 Pseudosection ...........................................................................................48
8.3.3 Signal ........................................................................................................50
8.3.4 Contact and Noise .....................................................................................54
8.3.5 Vp and Cycle..............................................................................................55
8.3.6 Show M and errM......................................................................................56
8.3.7 Decay Curve ..............................................................................................57
8.3.8 Show Windows..........................................................................................58
8.3.9 Show Sp ....................................................................................................59
8.4 Raw Data option ........................................................................................60
8.4.1 Check GPS .................................................................................................60
8.4.2 Start Recording (raw data) .........................................................................63
8.5 Memory option..........................................................................................65
8.5.1 Display Reading .........................................................................................65
8.5.2 History ......................................................................................................67
8.5.3 Back Mem .................................................................................................68
8.5.4 Clear Mem.................................................................................................69
8.5.5 Save File ....................................................................................................71
8.6 About option .............................................................................................73
Table of contents

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9Transferring data...........................................................................................74
9.1 ActiveSync .................................................................................................74
9.1.1 Installation and settings.............................................................................74
9.1.2 Connecting the Archer2Field PC to a desktop PC ........................................75
9.1.3 Transferring file(s) from the Archer2 Field PC to a desktop PC .....................76
9.2 Windows Mobile Device Center .................................................................78
9.2.1 Windows Mobile Device Center installation and settings ............................78
9.2.2 Establishing connection with a desktop PC.................................................79
9.2.3 Transferring file(s) from the Archer2to a desktop PC..................................80
9.3 USB connection..........................................................................................82
10 Bluetooth configuration .................................................................................84
11 GDD Rx software update................................................................................89
12 Troubleshooting.............................................................................................92
13 Technical help ................................................................................................98
14 Specifications.................................................................................................99
14.1 General specifications ....................................................................................99
14.2 Technical specifications..................................................................................99
Annex 1 –Geometrical parameters.......................................................................101
Annex 2 –Field survey setup.................................................................................106
Annex 3 –Example Dump File...............................................................................125

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1Introduction
The highly sensitive GDD IP Receiver (model GRx2) is a compact unit designed for high
productivity resistivity and time-domain induced polarization (IP) surveys in mineral
exploration, groundwater exploration, geotechnical investigations and other related
fields. It features high capabilities allowing it to work in any field conditions. It can be
configured for multi-pole or multi-dipole reception. The receiver uses a PDA handheld
PC to process data acquisition and the software can easily be updated via internet.
Characteristics:
•Reception poles/dipoles: 2 poles/dipoles, for dipole-dipole, pole-dipole or pole-
pole arrays.
•Programmable windows: The GRx2 offers twenty fully programmable windows for
a higher flexibility in the definition of the IP decay curve.
•User modes available: Arithmetic, logarithmic, semi-logarithmic, Cole-Cole and
user define.
•IP display: Chargeability values, apparent resistivity, IP decay curves and
pseudosections can be displayed in real time thanks to the WVGA LCD TFT screen.
Before data acquisition, the GRx2 can be used as a one channel graphic display for
monitoring the noise level and checking the primary voltage waveform through a
continuous display process.
•Internal memory: Over 64 000 readings can be stored in the internal memory of
the PDA. Each reading includes the full set of parameters characterizing
measurements. Data are stored on flash type memory and cannot be lost even if
the battery of the PDA is totally discharged or absent.
•Full wave data with IP Post-Processing software: The GRx2 records and saves the
full wave data (*.mem file). This raw data can be imported, visualized and
processed using GDD's IP Post-Processing software.

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2GRx2 accessories
A 1x IP receiver, model GRx2
B 1x Archer2Field computer with one rechargeable 10600mAh Li-Ion battery,
one hand strap and one capacitive stylus
C 1x GRx2 IP receiver wall charger with international plug kit (universal
voltage)
D Red and black banana cables
E 1x Archer2AC charger with international plug kit (universal voltage)
F 1x Rugged serial communication cable 9 pos D-SUB female - 9 pos. D-SUB
female
G 2x Archer2micro USB sync cable
H 1x Screwdriver (for Archer2battery cap)
I 1x External GPS antenna (SMA connector)
J 1x Archer2Field PC Quick Start Guide
K 1x GRx2 Instruction Manual and GRx2 Utilities CD/USB Stick (contains GDD
Rx software, Sync softwares, GRx2 manuals, Archer2manual)
1
Optional:
-GDD-RTE01 communication box with USB cable
-Allegro2standard kit
-Archer2Field PC spare battery
-Spare channel
Allegro2field PC

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A
B
G
H
I
J
C
D
E
F
K

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3GRx2 components
The GRx2 components are described in this section.
A - RS-232 connector - 9 pin serial communication port
This connector is used to connect the RS-232 cable between the Archer2Field PC
and the GRx2 receiver.
B - CABLE/WIRELESS switch
This switch is used to select CABLE (RS-232) or WIRELESS (Bluetooth)
communication with the PDA. The red light indicates WIRELESS position.
C - ON/OFF switch
This switch is used to turn the GRx2 ON. The red light indicates ON.
D - CHARGER connector
This connector is used to charge the battery of the receiver with the wall power
supply.
A
B
C
D
E
F
G

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E - REF terminal
This terminal is the infinite electrode in pole configuration. In dipole configuration,
this terminal is the first electrode in differential with the second electrode.
F - NUMBERED terminals
These terminals are referenced to the Ref terminal (infinity in pole configuration).
In dipole configuration, the numbered terminals are differential terminals.
G - SELF-TEST terminal
This terminal is used to perform a self test.
H - GPS connector (SMA)
This connector is used to connect an external GPS antenna (SMA).
H

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GDD’s GRx2 IP Receiver is powered by internal rechargeable lithium-ion batteries.
Here are a few tips for using and storing your lithium-ion powered receiver:
Usage
•Using a different battery power supply than the one supplied by GDD could
damage the batteries and the receiver.
•The connector labelled CHARGER is used only to recharge the internal batteries.
•Do not replace the receiver internal batteries without the authorization and
advice from GDD’s technicians.
•The total operating time of the receiver will depend on the environmental
conditions. Using the receiver in very cold weather (-200C to –400C) will lower the
operating time.
•The receiver will turn itself off when the batteries reach a critical level.
•To extend battery life, avoid frequent full discharge and charge more often
between uses.
•The power level of the batteries and the charging status appear on the main
screen of the Archer2Field PC when using the GDD Rx program.
Power level
Charging
4Power

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Charge completed
Storage
•To avoid permanent capacity loss, store the receiver and the external battery
pack at 40% charge.
•Store the receiver and the external battery pack in a cool and dry place.
•If stored for several months, check the batteries charge level every six months
and recharge them up to 50% if they are below 30% charge.
Never store fully charged or completely discharged Lithium-Ion batteries for an
extended period.