Sercel 0500A WTU is a wireless seismic acquisition unit. User Manual

Sercel Inc WTU is a wireless seismic acquisition unit.

User Manual

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Document ID2795924
Application IDGtB6HQnZs8YpK9Hd8KvkOg==
Document DescriptionUser Manual
Short Term ConfidentialNo
Permanent ConfidentialNo
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Document TypeUser Manual
Display FormatAdobe Acrobat PDF - pdf
Filesize103.78kB (1297293 bits)
Date Submitted2015-10-28 00:00:00
Date Available2016-04-25 00:00:00
Creation Date2015-10-16 09:40:43
Producing SoftwareMicrosoft® Word 2010
Document Lastmod2015-10-16 09:40:43
Document TitleUser Manual
Document CreatorMicrosoft® Word 2010
Document Author: LOIZEAU Thibaut

WTU-518
USER MANUAL
Rev 30-2015
Page 1
To contact Sercel
Europe
Nantes, France
Sales; Customer Support;
Manufacturing & Repair.
B.P. 30439, 16 rue de Bel Air
44474 Carquefou Cedex
Tel: +33 2 40 30 11 81, Fax: +33 2 40 30 19 48
Hot-Line: Land: +33 2 40 30 58 88
Marine: +33 2 40 30 59 59
Navigation: +33 2 40 30 69 87
E-mail: sales.nantes@sercel.com
customersupport.land@sercel.com
customersupport.marine@sercel.com
customersupport.navigation@sercel.com
repair.france@sercel.com
streamer.repair@sercel.com
www.sercel.com
St Gaudens, France
Vibrator Customer Support;
Vibrator Manufacturing & Repair;
Streamer Manufacturing & Repair.
Tel: +33 5 61 89 90 00, Fax: +33 5 61 89 90 33
Hot Line: +33 5 61 89 90 91
E-mail: customersupport.vib@sercel.com
customersupport.vsp@sercel.com
Russia
Customer Support; Repair.
Moscow, Russia
Tel: +7 495 644 08 05, Fax: +7 495 644 08 04
E-mail: repair.cis@geo-mail.org
support.cis@geo-mail.org
Surgut, Russia
Tel: +7 3462 28 92 50
North America
Houston, Texas, USA
Sales; Customer Support;
Manufacturing & Repair;
Tel: +1 281 492 66 88, Fax: +1 281 579 75 05
Hot-Line: +1 281 492 66 88
E-mail:
sales.houston@sercel.com
HOU_Customer.Support@sercel.com
HOU_Training@sercel.com
HOU_Customer.Repair@sercel.com
Tulsa, Oklahoma, USA
Tel: +1 918 834 96 00, Fax: +1 918 838 88 46
E-mail:
support@sercel-grc.com
sales@sercel-grc.com
Les Ulis, France
Sales; Customer Support
Tel: +33 1 69 93 83 60, Fax: +33 1 69 81 78 09
E-mail: vspsupport@sercel.com
Hot Line: +33 6 15 54 13 96
Calgary, Alberta, Canada
Sales; Customer Support; Manufacturing.
Tel: +1 403 275 3544, Fax: +1 403 295 1805
E-mail:
Cal_Customer.Support@sercel.com
Brest, France
Sales; Customer Support
Tel: +33 2 98 05 29 05; Fax: +33 2 98 05 52 41
E-mail: sales.nantes@sercel.com
Middle East
Dubai, U. A. E.
Sales, Customer Support, Repair.
Tel: +971 4 8832142, Fax: +971 4 8832143
Hot Line: +971 50 6451752
E-mail: dubai@sercel.com
repair.dubai@sercel.com
Toulon, France
Sales; Customer Support
Tel: +33 4 94 21 69 92; Fax: +33 4 94 21 73 44
E-mail: SalesMSBU@sercel.com
SupportMSBU@sercel.com
Toulouse, France
Sales; Customer Support
Tel: +33 5 61 34 80 74; Fax:+33 5 61 34 80 66
E-mail: support@metrolog.com
sales@metrolog.com, info@metrolog.com
Alfreton, U. K.
Streamer Manufacturing & Repair;
Customer Support.
Tel: +44 1 773 605 078, Fax: +44 1 773 541 778
E-mail: streamer.repair@sercel.com
Trondheim, Norway (Optoplan AS)
Tel: +47 73820500, Fax: +47 73820599
Dortmund, Germany
Manufacturing.
DE REGT Tel: +49 2 31 65 55 64 11.
Rev 30-2015
Far East
Beijing, P. R. of China
R & D.
Tel: +86 106 43 76 710, Fax: +86 106 43 76 367
E-mail: support.china@geo-mail.com
repair.china@geo-mail.com
Xian, P. R. of China
Manufacturing & Repair.
Tel / Fax: +86 29 8222 9504
Xushui, P. R. of China
Manufacturing & Repair.
Tel:+86 312 8648355, Fax:+86 312 8648441
Singapore
Streamer Manufacturing & Repair;
Customer Support.
Tel:+65 64 17 70 00, Fax:+65 6 545 1418
Page 2
Guidelines for Safe and Efficient Use:
Read this information before using your WTU-518.
Warnings, Cautions, and Important notices throughout this manual guide you to avoid injury, prevent equipment
damage, and determine equipment use when varying components or configurations exist. Notes provide tips or
additional information.
SERCEL is not responsible for damages or injuries that result from failure to observe the information provided.
When a Warning or Caution appears with an exclamation-point icon, as shown in this example,
this is to indicate possible equipment damage or potential risk of misuse and incorrect operation.
Important notices appear in the manual to highlight information that does not affect the risk of
bodily injury, death, or equipment damage, but is nevertheless important. These notices appear with
a stop-sign icon, as shown in this example.
IMPORTANT
Warranty is void if the product shows evidence of being damaged as a result of
disassembly/reassembly by anyone other than qualified, service-trained personnel authorized by
SERCEL.
Rev 30-2015
Page 3
TABLE DES MATIERES :
DESCRIPTION: ............................................................................................................................................................................. 5
DEPLOYMENT: ............................................................................................................................................................................ 6
LEDS FUNCTION: ................................................................................................................................................................................ 6
POWER / ETHERNET PORT: .................................................................................................................................................................... 6
INPUT GEOPHONE PORT: ....................................................................................................................................................................... 6
CONFIGURING THE WTU-518:..................................................................................................................................................... 7
GPS configuration: ......................................................................................................................................................................................7
WLAN configuration: .................................................................................................................................................................. 7
Set WLAN Regulatory Domain: ...................................................................................................................................................................7
Set WLAN Access Point Scanning Channel List: ...........................................................................................................................................7
Set WLAN SSID: ...........................................................................................................................................................................................7
Radio configuration: ................................................................................................................................................................... 7
Radio data rates: .........................................................................................................................................................................................7
Set Radio Regulatory Domain: ....................................................................................................................................................................8
Set Radio frequencies: ................................................................................................................................................................................8
Set Radio Security Keys : .............................................................................................................................................................................8
Description of radio protocol:..................................................................................................................................................... 9
FREQUENCY HOPPING SPREAD SPECTRUM (FHSS)..................................................................................................................................... 9
LISTEN BEFORE TALK (LBT) ................................................................................................................................................................... 9
REPAIRS: ................................................................................................................................................................................... 11
WTU-518 DISASSEMBLY INSTRUCTIONS: ............................................................................................................................................... 11
...................................................................................................................................................................................................... 11
INTERNAL BATTERY REPLACEMENT:........................................................................................................................................................ 12
FUSE REPLACEMENT: .......................................................................................................................................................................... 13
RAU 2G A MAIN BOARD FUSE ACCESS: ................................................................................................................................................. 13
WTU-518 CONNECTORS:........................................................................................................................................................... 14
POWER / ETHERNET CONNECTOR: ........................................................................................................................................................ 14
INPUT GEOPHONE CONNECTOR:............................................................................................................................................................ 14
SPECIFICATIONS: ...................................................................................................................................................................... 15
REGULATORY INFORMATION: .................................................................................................................................................. 16
Rev 30-2015
Page 4
Description:
WTU-518
The WTU-518 acquires and stores data coming from the analog or digital sensor plugged on its geophone connector.
By WLAN or LAN communication links, the WTU-518 transmits these stored data to recorder or field unit’s
equipment. State Of Health are transmitted through the UNITE system via a 2.4GHz radio communication link.
2.4GHz proprietary radio communication for
State of Health (SOH) management and GPS
synchronization redundancy
Power Ethernet connector
- external battery connection
- Settings and data retrieval
High memory capacity
Non volatile - longer than
four weeks’ autonomy
(12-hour working days
configured)
Internal battery
Longer than
four weeks’
autonomy (12hour working
day configured)
Rev 30-2015
2 reporting LEDs
Immediate status for
fast check (GPS,
SENSOR, WLAN,
BATTERY, etc.)
Integrated GPS
high-accuracy clock
synchronization
Integrated WLAN 2,4GHz
and 5GHz high-speed
wireless communication
-Settings
-Data retrieval
Geophone connector
Power ON/Power OFF by
connecting/disconnecting
analog or digital sensors
Page 5
Deployment:
IMPORTANT
Whenever any connector is unused, put its connector protective cap in place.
LEDs Function:
Two LEDs flashing in
red

Two LEDs flashing
every 1s in green

Two LEDs flashing
every 4s in green

acquisition not started or issue
after TTFF timeout
Harvest and acquisition is
running.
GPS is locked or unlocked.
Acquisition is running.
GPS is locked.
Power / Ethernet port:
This port has two main functions:
- configure the WTU-518 and harvest datas by connecting the Ethernet cable supplied by Sercel
- Power the WTU-518 when there is no internal battery, by plugging an external battery, or charge the
internal battery by an external battery or a stabilized power supply. This power input works between 11 and
16.8Vdc.
Two kinds of batteries can be plugged on this port:
 Lead-acid battery
 Lithium-ion battery
CAUTION
Use only the power/Ethernet cable, supplied with the WTU-518, to connect it to the battery or other
tools.
Input geophone port:
- Power ON/Power OFF of the WTU-518 by connecting/ disconnecting the geophones, analog or digital.
- Automatic recognition of geophones’ types (analog or digital).
Rev 30-2015
Page 6
Configuring the WTU-518:
The user has to program WTU-518 parameters.
In this version of document, only the GPS, WLAN and radio configuration are described.
GPS configuration:

list of allowed GNSS constellations (QZSS,GALILEO,BEIDOU,GLONASS,GPS)
o GPS Only is the default mode
o GPS Only + SBAS
o GLONASS only
o GPS+GLONASS+SBAS

Navigation model
o Stationary (Default mode)
o Pedestrian
WLAN configuration:
Set WLAN Regulatory Domain:
Use this menu to choose the appropriate operating frequency bands for compliance with the local regulations of the
country in which the radio unit is to be used:
• CE for Europe: 2400-2483.5MHz band, 5.470-5.725GHz
• FCC/RSS for US/Canada: 2400-2483.5MHz band, 5.470-5.725GHz, 5.725-5.825GHz
Set WLAN Access Point Scanning Channel List:
Use this menu to set the channels to be scanned in order to find an Access Point.
In order to avoid interference with 2.4GHz proprietary radio, prefer 5GHz channels
Set WLAN SSID:
Use this menu to set the network name (SSID) which the WTU-518 has to associate to.
Radio configuration:
The radio parameters of the WTU-518 are:
Radio data rates:
The following data rates are supported:


100 kbps
The packet duration is up to 22ms. Moreover, the maximum radiated output power is limited to +13 dBm
eirp in Europe countries, +16dBm eirp in US (FCC) and Canada (RSS)
500 kbps
The packet duration is up to 8.5 ms. Moreover, the maximum radiated output power is limited to +13 dBm in
Europe countries, +16dBm eirp in US (FCC) and Canada (RSS).
Rev 30-2015
Page 7
Set Radio Regulatory Domain:
Use this menu to choose the appropriate maximum radiated output power for compliance with the local regulations
of the country in which the radio unit is to be used:
• CE for Europe: +13 dBm eirp at 100 kbps and 500 kbps
• FCC/RSS for US/Canada: +16 dBm eirp at 100 kbps and 500 kbps
Set Radio frequencies:
Use this menu to choose one of these sets of frequencies used in the Frequency Hopping Spread Spectrum (FHSS):

2405-2469 hopset #1 : full 2.4GHz frequency band hopset #1
{2405.5;2409.5;2413.5;2417.5;2420.5;2424.5;2428.5;2432.5;2436.5;2439.5;2443.5;2447.5;2451.5;2455.5;24
58.5;2462.5;2466.5 MHz } is the set of frequencies

2405-2469 hopset #2 : full 2.4GHz frequency band hopset #2
{2406.5;2410.5;2414.5;2418.5;2421.5;2425.5;2429.5;2433.5;2437.5;2440.5;2444.5;2448.5;2452.5;2456.5;24
59.5;2463.5;2467.5 MHz } is the set of frequencies

2405-2469 hopset #3 : full 2.4GHz frequency band hopset #3
{2407.5;2411.5;2415.5;2419.5;2422.5;2426.5;2430.5;2434.5;2438.5;2441.5;2445.5;2449.5;2453.5;2457.5;24
60.5;2464.5;2468.5 MHz } is the set of frequencies

2405-2422 hopset : narrow 2.4GHz frequency band #1
{2405.5 MHz; 2406.5 MHz;….2421.5 MHz }

2429-2446 hopset : narrow 2.4GHz frequency band #2
{2429.5 MHz; 2430.5 MHz;….2445.5 MHz }

2452-2469 hopset : narrow 2.4GHz frequency band #3
{2452.5 MHz; 2453.5 MHz;….2468.5 MHz }
The hopset has to be chosen to reduce interference with other radio equipment in 2.4 GHz frequency band.
For example, if a Wifi access point is configured at channel 6, the frequency band of the access point is 2426MHz2448MHz. Thus, the 2405-2422 hopset and 2452-2469 hopset have no interference with this Wifi access point.
Set Radio Security Keys :
Use the Hop Sequence and the Synchro Word keys to secure the WTU-518 network.
Use the Hop Sequence key to limit the interference with another Sercel network. The Hop Sequence key defines a
unique frequency sequence. Two different Frequency keys define two frequency sequences, using the same set of 17
frequencies but correlation between the two different sequences is about null.
Rev 30-2015
Page 8
Use the Synchro Word key to prevent connection to another Sercel network. The radio packets transmitted with a
Synchro Word key cannot be received by a Sercel network configured with another Synchro Word key.
Hop Sequence key = 1 (default),…xxx
For example :
Hop Sequence #1 = 10 15 1 6 11 16 2 7 12 3 8 13 4 9 14 0 5;
Hop Sequence #2 = 5 0 14 9 4 13 8 3 12 7 2 16 11 6 1 15 10 ;
Hop Sequence #3 = 0 5 9 14 4 15 10 1 6 11 16 2 12 7 3 13 8
Hop Sequence # = …
Synchro Word key = 1 (default),…xxx
Description of radio protocol:
The WTU-518 uses a half-duplex transmission protocol with a Frequency Hopping Spread Spectrum (FHSS) method.
A mechanism of Listen Before Talk (LBT) is implemented to avoid radio collisions inside the WTU-518 network or
with an external radio network. Moreover, two security keys are configured to secure the WTU-518 network.
Frequency Hopping Spread Spectrum (FHSS)
The FHSS operates on a set of frequencies. It will use one frequency for a fixed period of time and then switches to
another channel. The next frequency will be given by a pseudo-random sequence. In order to communicate, the
transmitter and the receiver have to use the same set of frequencies, the same frequency sequence defined by the
Frequency key. FHSS synchronization can be based on the date delivered by the internal GPS receiver or based on
the reception of packets issued from another WTU-518.
Send packet on f2
f1
f2
f3
f4
Send packet on f1
f5
f6
f1
f2
f3
Send packet on f6
f4
f5
f6
f1
f2
f3
f4
f5
f6
Example of FHSS based on a set of 6 frequencies
Listen Before Talk (LBT)
The LBT is based on a Channel Control Access mechanism: the WTU-518 measures the Received Signal Strength
Indication (RSSI) before beginning packet transmission. If the RSSI is too high, the media is said “busy” and the WTU518 postpones the transmission for a random backoff time.
Rev 30-2015
Page 9
IMPORTANT
Prior to connecting any plug, make sure there is no water inside connectors.
Electrostatic discharge:
Use the following guidelines to provide a static-free repair station that will preclude any ESD-related
damage to electronic circuits:
• All spare parts (circuit boards and ESD sensitive devices) should be stored and transported in staticshielding bags.
• Unless the repair station rests on a conductive floor, chairs or stools should rest on a grounded, rigidtype, static-dissipative floor mat.
• Use a static-dissipative table mat.
• Wear a static-control wrist strap or foot grounder.
• Provide common-point grounding for all conductive items (including personnel and soldering iron tip).
• To control the discharge rate and protect workers from electric shocks, both the table mat and wrist
strap should be grounded through a 1-MΊ resistor. The mat should be connected to the same earth
ground point as the wrist strap.
• Wear static-dissipative garments.
Rev 30-2015
Page 10
Repairs:
WTU-518 disassembly instructions:
To disassemble the WTU-518, remove the 8th screws visible when the unit is resting upside down.
CAUTION
Rev 30-2015
Pay attention to not pull on the internal battery’s cables when disassemble the battery’s part with
the lid.
Page 11
Internal battery replacement:
Disconnect the battery’s connector from the WTU-518‘s board and then, remove the 4th screws placed on the
clamping plate:
Remove the holding foam to access the internal battery
CAUTION
Pay attention of the insertion ‘direction of the internal battery.
CAUTION
Use only the type of battery specified by Sercel.
Rev 30-2015
Page 12
Fuse replacement:
CAUTION
Before to change the out of service fuse, unplug the external battery from the WTU-518 A.
The WTU-518 A has one
fuse placed on the hot
point on the main board
of the WTU-518 A
WTU-518 A Main board fuse access:
To access to the fuse placement, disconnect the connectors described below, and
then remove the electronic set from the lid:
Power / Ethernet
connector
Input Connector
Internal battery
connector
Replace the out of service fuse
by a new fuse.
CAUTION
Rev 30-2015
Use only this type of fuse:
Constructor:
Littelfuse
Current rating:
4A
Constructor reference: 0460.004ER
Page 13
WTU-518 connectors:
Power / Ethernet connector:
Power / Ethernet plug
Signal Name
+VBAT
GND
I/O type
In
In
Reset_dongle
In
Ethernet_dongle
In
TX+
Out
TX-
Out
RX+
In
RX-
In
Other signal
Input geophone connector:
Input geophone plug
Femelle
Male
Rev 30-2015
Signal Name
Input_n
Input_p
I/O type
In-Out
In-Out
Other signal
0V in digital mode
+5.93V in digital
mode
Page 14
Specifications:
Operating Voltage
11 – 16.8 Vdc
Current consumption
up to 2.5A with 12V external power supply when charging
internal battery
10mA with 12V external power suppy when no internal
battery
Power consumption
120 mW (Typical power consumption)
1,1W (Max power consumption in CE configuration)
Radio data rates
100 , 500 kbps
Radio Frequency Characteristics:
Frequency band
2405 – 2470 MHz
Spreading method
FHSS
Number of channels
17
Radio Output power
CE Mode at 100 and 500 kbps
+13 dBm eirp typ
FCC/RSS Mode at 100 and 500 kbps
+16 dBm eirp typ
WLAN standard
802.11 a,b,g ; 802.11n single stream- 20MHz bandwidth
WLAN frequency band
2400-2483.5GHz
5.47-5.725GHz
5.725-5.825GHz (only FCC/IC regulatory domain)
WLAN Output power
802.11b/g
+19 dBm eirp typ
802.11n 2.4GHz band
+17 dBm eirp typ
802.11a
+15dBm eirp typ
802.11n 5GHz band
+13dBm eirp typ
Supported GNSS Constellations
GPS L1 C/A, GLONASS
Weight
2,1kg
Operating Temperatures
-20°C to +60°C with internal battery
0°C to +40°C when charging internal battery
-40°C to +70°C with no internal battery option
Operating Environment
Rev 30-2015
IP68
Page 15
Regulatory Information:
US:
The FCC ID of the WTU-518 is KQ9-0500A
The WTU-518 contains FCC ID: KQ9-W161A
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off and on,
the user is encouraged to try to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help
WARNING
This device must be professionally installed.
WARNING
WARNING
Rev 30-2015
Changes or modifications not expressly approved by Sercel could void the user's authority to operate
this equipment.
This equipment complies with FCC’s radiation exposure limits set forth for an uncontrolled
environment under the following conditions :
This equipment should be installed and operated such that a minimum separation distance of 20cm
is maintained between the radiator (antenna) and user’s/nearby person’s body at all times.
This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
Page 16
CANADA:
The IC ID of the WTU-518 is
1317A-0500A
CAN ICES-3 (A) / NMB-3(A)
The WTU-518 contains IC ID: 1317A-W161A
This device complies with Industry Canada’s licence-exempt RSSs.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation of
the device.
Le prĂŠsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.
L'exploitation est autorisĂŠe aux deux conditions suivantes :
1. L’appareil ne doit pas produire de brouillage ;
2. l'utilisateur de l'appareil doit accepter tout brouillage radioĂŠlectrique subi, mĂŞme si le brouillage est susceptible
d'en compromettre le fonctionnement.
This equipment should be installed and operated with a minimum distance of 1 cm between the radiator and your
body.
Cet ĂŠquipement devrait ĂŞtre installĂŠ et actionnĂŠ avec la distance minimum 1 cm entre le radiateur et votre corps.
Rev 30-2015
Page 17
Europe:
Conforms to the essential requirements of the following EEC directives:
R&TTE 1999/5/CE
EMC 2004/108/CE
LV 2006/95/CE
WARNING The WTU-518 is a class-A device. In residential areas, the user may be requested to take appropriate
measures in the event of RF interference caused by this device.
The WTU-518 meets the reference level set by the 1999/519/CE recommendation:
WARNING Electric field strength in the far field of a radio frequency point source is calculated as follows:
√30 ∗ 𝑃 ∗ 𝐺
𝐸=
𝑑
With: E = Electric filed in V/m
P = Maximum average transmit power capability of the radio, in W
G = total Tx gain as a factor, converted from dB
D = distance from the point source, in m
band
P*G
E at 20cm
E limit
0.08W (+19dBm)
7.7V/m
61V/m
Proprietary radio 2.4GHz emission
0.02W (+13dBm)
6.2V/m
61V/m
+ WLAN 5GHz emission
+0.032W (+15dBm)
WLAN 2.4GHz emission only
(1)
(2)
Rev 30-2015
(2)
(1)
reference level of the table 2 of the 1999/519/CE
WLAN 2.4GHz emission and proprietary radio 2.4GHz emission can not happen simultaneously
Page 18
Source Exif Data: 
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Page Count                      : 18
Language                        : fr-FR
Tagged PDF                      : Yes
Author                          : LOIZEAU Thibaut
Creator                         : Microsoft® Word 2010
Create Date                     : 2015:10:16 09:40:43+02:00
Modify Date                     : 2015:10:16 09:40:43+02:00
Producer                        : Microsoft® Word 2010
EXIF Metadata provided by EXIF.tools
FCC ID Filing: KQ9-0500A

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