Phoenix Geophysics RXU-8A User manual

RXU-8A Quick
Start Guide
2. RXU-8A (components)
3. Product description
4. Creating a Configuration File
5. Configuration Creator - CSAMT acquisition
6. Configuration Creator - MT acquisition
7. Electric Channel Settings - MT acquisition
8. Magnetic Channel Settings
9. Using Remote Control Client
10. Saving a Configuration File
11. RXU-8A Connections
12. SD Card - Recording Data
13. Stopping a recording
14. Quick Field Data Evaluation
15. Evaluate
16. Process Data
17. Viewing Recording Details
18. Technical Support
1
Version: 200914 ID: DAA21

Components
1Power/Record button and indicator
2Display
3
E1 (Ex) electrode connectors
E2 (Ey) electrode connectors
E3 electrode connectors
E4 electrode connectors
E5 electrode connectors
4Ground electrode connector
512VDC power input
6LAN connector
7GPS antenna connector
8
H1 (Hx) magnetic sensor connector
H2 (Hy) magnetic sensor connector
H3 (Hz) magnetic sensor connector
9SD card button and indicator
10 SD card slot and cover
132
4
5
6
7
8
9
10
2

RXU-8A
Designed with flexibility in mind, the RXU-8A
can be used as a regular MT receiver, where
the extra electric channels can be used to
acquire a redundant recording on the same site
or to acquire an adjacent site.
Excellent choice for controlled source
acquisitions that require a large density of
electric channels. The RXU-8A can also work
for special applications where extra electric
inputs might be needed.
3

Open EMpower and click the Prepare button
1. Select the Receiver Type
2. Recording
2.1. MT - Configuration Creator
2.2. CSAMT - Configuration Creator
(see next page)
3. Calibration
3.1. Sensor Calibration
3.2. Receiver Calibration
*No additional configuration needed
4. System tests
4.1. White Noise
4.2. Parallel Noise - Configuration Creator
4.3. Self Test
*No additional configuration needed
Creating a Configuration File
243
4.1
4.2
4.3
3.1
3.2
2.1
1
4.1
3.1
3.2 4.3
2.2
4

Configuration Creator - CSAMT acquisition
1. Select the CSAMT recording type
2. CSAMT Setup Wizard
○ Type the Project name
○ Select the Local power line frequency
○ Choose the Local time zone and click Next
3. Frequency Schedule
○ Define the lowest and highest frequency
○ Select the Frequency per octave and click Next
4. Transmitter Setup
○ Select the Transmitter (Tx) type
○Type the sensor/ Tx serial and click Next
5. Starting Coordinates
○ Enter the base coordinates of the grid (latitude and
longitude)
○ The Station Separation within a same line
○ Separation between lines
○ The Line orientation
6. Click Accept
1
2
3
4
5
65

1. Check that the Receiver type is
RXU-8A
2. Select the Schedule
2.1. Manual or Automatic Start
2.2. Or for a specific schedule use,
Single Shot, Daily or Weekly
and click Add Schedule to
define the time and date
3. Ethernet port (see the Networking
Settings manual)
4. Channels Settings
(see pages 7-8)
5. Define the Sampling Mode
and/or Sampling Rate
6. Configuration Layout
Configuration Creator - MT acquisition
6
Additional information
4
2
2.2
This section is used for inputting the
parameters and instrument details that will
be used for the recording
2.1
5
1
3
6

Electric Channel Settings - MT acquisition
1. Select the Electric channel
2. Enable or Disable the channel(s)
○Disable the channel(s) If you do not plan to use
them during the recording (This will save space on
the SD card)
3. Complete the information in the Electric
channel settings
2
Some channel settings
can be configured by
using the right-click menu
7
1
2
3

Magnetic Channel Settings
1. Select the Magnetic channel
2. Enable or Disable the channel(s)
○Disable the channel(s) if you do not plan to use
them during the recording (This will save space on
the SD card)
3. Fill in the required information on the Magnetic
channel settings
2Channel settings can be configured by using the right-click
menu or by using the Magnetic channel settings section
Some channel settings
can be configured by
using the right-click
menu
8
1
3
2

Using Remote Control Client
9
1. Use Remote Control Client from Tools menu
2. Provide a valid hostname, username and
password
3. Then click on Connect button to establish a
connection
4. Choose Receiver Type
5. Enter the instrument ID
6. Configure Electric and Magnetic channels as
needed
7. Click on the Send Configuration button
2
3
45
Receiver with firmware newer than
v1.54.1 will ignore the configuration
about the Attenuator
7
6
1
Note :
Once the receiver has received the new configuration and
started the new recording, screen will be inactive for at
least 3 minutes.

Saving a Configuration File
1. Insert the SD Card
○ The computer must be
equipped with an SD card slot
or use a USB card reader
2. Click the File menu
○Save or Ctrl+S
○Select the SD card
○EMpower will automatically create
the file “config.json”
3. Save the configuration file
(config.json) in the root folder of the
SD card
4. Open the file explorer
○ Right click SD card drive
○Select Eject option
○Pull out the SD Card
2
3
1
4
10

RXU-8A
Connection - Single site MT
Start by connecting:
1. Ground electrode
2. Electrodes to channel E1(Ex) (N+, S-) and
channel E2(Ey) (E+, W-)
○ Channels E3, E4, E5 are normally not
required in a conventional Single site MT
survey
3. Magnetic sensors to channels H1(Hx), H2(Hy)
and H3(Hz)
4. GPS antenna
5. 12V DC Power Source
6. Network connector
In the field, it is often most efficient to connect the
components to the receiver following the order on the right 11

SD Card - Recording Data
Press the power button briefly and
release
Starting Acquiring GPS Ready
SD
2
3
1
Press the power button briefly and release
Ready Channels Recording
Detection
SD
Automatic Start
The recording starts automatically
according to the schedule
Recording
SD
Recording
1. Insert the SD card
2. To turn on the receiver, press the
Power button briefly
2.1. Wait until both LEDs are solid blue
2.2. Automatic Start recording
*For any problem with the SD Card, check
the Troubleshooting manual
3. If the schedule type was configured as
Manual, press the Power button to
start recording
Indicators
2.1
2.2
Rapid, equal pulses
Solid color / Off
12

Stopping a recording
Keep pressing the power button 3 sec and
release
Ready Shutdown Off
SD
1
2
Press the Power button briefly and release
Recording Saving Ready
SD
3
1. Press the Power button briefly and release to stop
recording
○Wait until both LEDs are steady blue
2. Turn off the receiver, pressing the Power button for
a few seconds the LEDs will flash red
○Wait until both LEDs turn off
3. Eject the SD card
○Press the SD card and release, pull the SD
card
Rapid, equal pulses
Solid color / Off
Indicators
13

Quick field Data Evaluation
1. Click the Evaluate button
2. Select View data
3. Select the SD card
○ The recording creates two folders,
log and recdata
4. Open the recdata folder and select
the recording folder and click
Choose
Receiver
Serial
Number
Recording
Date
Recording Start Time
(GPS timezone)
2
13
4
To manage data the "Manage"
section can be consulted.
14

Review and Process the recorded information
1. Review the Electrode Resistance values and make the
necessary corrections
○ Electrode Distance (m) to GND
○ E-Azimuth
○ External Filter
2. Ensure that the magnetic sensors were detected and
make the necessary corrections
○ Serial #
○ Polarity
○ H1-H-3
○ Azimuth
3. View Recording Details (see page 15)
4. Process the recorded data after the reviewed the
information (see next page)
Evaluate
13
4
This section can also be used to input
additional field information if desired
1
2
3
The warning icon indicates that something might be wrong with
the sensor or the coil lead, review the Troubleshooting manual
for more details
15

Process Data
1
3
2
2
4
1. Click the Process button
○ Verify that the channels and references
selected are the desired ones
2. Define the time period by entering a
start and end date/time
3. Enable the electric power grid filter
that corresponds to the frequency
carried by the power lines in the survey
region (50Hz, 60Hz or None)
4. Click the Process button
5. A live display of the resistivity curve will
appear after a few seconds
*This resistivity curve is not saved. It is purely for
QC purposes
5
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Viewing Recording Details 1
2
3
4
5
Review that the following levels are
within valid limits for quality
control:
1. Battery Voltage
2. Internal Temperature
3. Number of Satellites
4. Saturated Frames
○If saturation is not close to
~0%, review the channel
configuration (see pages 4 - 6),
the channel gain might be too
high and/or there is artificial
noise on your site
5. Time Series Levels for each
channel
17

Email: [email protected]
Phone: + 1 416 491 7340
Technical Support Contact
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