GMSplus User Manual Appendix - Simple
Contents
1. Be a source of network triggers Yes It can be selected if all the other instruments in Interconnection No the interconnection network should be alerted in case of a local trigger Activate on network triggers Yes It can be selected if the instrument should trigger Interconnection No in case it will be alerted over the interconnection network from any other instrument 18 Each trigger set can be adjusted according to your wishes To change the trigger set press or GS_GMSplus_UserManual_App_ICC_VO1 doc GMSplus User Manual Appendix Simple Interconnection Network 20 05 2015 V1 Appendix A Assembly Instructions for Cable Glands with Shield The cable shield should be connected to the housing on one 1 Interconnection Junction Box only For all others the internal cable socket must be used The cable glands of the interconnection box support cables with diameter between 5 and 6 5 mm os IL I x WOT gt 79 Progress MS EMV 1 Screw the lower part 4 of the cable gland into the housing 2 Push compression nut 1 sealing insert 2 and contact bushing 3 over the cable 3 Trim outer sheath of the cable to the desired length 4 Trim braided shield or shielding foil to the the approximate length of contact bushing X 5 Push contact bushing sealing insert and compression nut to the end of the sheath 6 Place braided shield 6 or shielding fo2. RTC sec to UTC minutes e Adjust the following parameter by pressing A Time source RTC Internal clock is not synchronizing itself to any source GPS Internal clock is synchronizing to the connected GPS NTP Internal clock is synchronizing to aNTP server AUTO Internal clock synchronizes to NTP in case GPS is not available Instrument acts as Time Master Instrument NET1PPS Internal clock is synchronizing to the time signal distributed by the Time Master Instrument over the interconnection network Instrument acts as Time Slave Instrument a Make sure that only one instrument in the interconnection network is configured as Time Master Instrument All others must be configured as Time Slave Instruments GS_GMSplus_UserManual_App_ICC_V01 doc GeoSIG 10 11 GMSplus User Manual Appendix Simple Interconnection Network 20 05 2015 V1 3 2 Common Trigger e Press G to select the Number of Trigger Sets and make sure that there is at minimum one trigger set Main Menu A Station description GMSplus GeoSIG Ltd By Station Code san east GSGMS C Location description Switzerland D Seismic network code GS E Number of Channels 3 F Number of Output Streams 0 G Number of Trigger Sets 2 H Number of Preset Triggers 0 I Channel Parameters
3. purpose The earth cable should be connected first to the Interconnection Junction Box and then wired to the instrument See Figure 2 for details GMSplus OPTION Interconnection INTERCON plug Junction To the previous instrument To the next instrument Cable shield Local Protection Earth Figure 2 Wiring including Interconnection Junction Box 2 3 Connection to the Interconnection BUS Each instrument is connected to the BUS cable via the Interconnection Junction Box as described in chapter 2 2 The setup looks as shown below Last Instrument N Instruments between First Instrument Figure 3 Interconnection BUS GS_GMSplus_UserManual_App_ICC_V01 doc GMSplus User Manual Appendix Simple Interconnection Network 20 05 2015 V1 2 3 1 Cabling The cable coming from the previous Interconnection Junction Box and the cable going to the next one are connected as indicated below To the instrument BUS to previous Junction Box BUS to next Junction Box Cable shields from the BUS Figure 4 Connectors inside Junction Box Pin Function 15 Box and Box n Box 1 1 1 Trigger RS 485 2 2 2 Trigger RS 485 3 Bee 3 Time RS 485 4 4 4 Time RS 485 7 7 7 GND optional No crossing of the cables is needed at any place The wire from Pin 1 wil
4. swiss made to measure GeoSIG hm GMSPlus User Manual Appendix Simple Interconnection Network GeoSIG Ltd Wiesenstrasse 39 8952 Schlieren Switzerland Phone 41 44 810 2150 Fax 41 44 810 2350 info geosig com www geosig com GeoSIG GMSplus User Manual Appendix Simple Interconnection Network swiss made to measure 2 11 20 05 2015 V1 Document Revision Version Date Modification Prepared Checked Released 1 20 05 2015 First release PAT JON JON Disclaimer GeoSIG Ltd reserves the right to change the information contained in this document without notice While the information contained herein is assumed to be accurate GeoSIG Ltd assumes no responsibility for any errors or omissions Copyright Notice No part of this document may be reproduced without the prior written consent of GeoSIG Ltd The software described in this document is furnished under a license and may only be used or copied in accordance with the terms of such a license Trademark All brand and product names mentioned are trademarks or registered trademarks of their respective holders All rights reserved GeoSIG Ltd Switzerland GS_GMSplus_UserManual_App_ICC_VO1 doc GMSplus User Manual Appendix Simple Interconnection Network 20 05 2015 V1 Table of Contents De IHiroduelionsses gt 2 2 22er EsbEn EEE ibe lenaceaeoameaB atmos eauee 4 TET ACOMMOMN TIMING 2 0 ee ie sine ebene 4 1 1 1 Time Master Ins
5. gt K Trigger Parameters gt File Storage and Policy gt Communication Parameters gt O Miscellaneous Parameters gt e Press K to get to the Trigger Parameters menu to adjust the settings of the triggers The following menu appears In case the number of trigger sets is set to 0 this menu can not be selected Main Menu Triggerset 1 of 2 A DEG GSES SE NaMe seagama aaa ee er ee ee Triggerl By Eyent recording nee iona aa E a E E wise wes Besos Yes C Record on network triggers only eee eee ee ee ee ee No G PRE Event Seconds sarasa aa aids a aS orale ale au dee a a aS 5 0x05 Hy Post Event SSCOMGAS sjaa aa aaa a cetaser een 10 0x0A I Trigger time frame SOC un ere eS ae eee apes 3 0x03 Jr Max event AQULALLON SEE ee een url 60 0x3C Ky Monitored channels assan aa ee 3 EL Trigger settings in Lhe eevee ase e l areee gt My Stored channels 4 4 53 20 Sara a era ee 3 N List of stored channels wars endende gt O Be a source of network triggers received from LAN No P Activate on network triggers received from LAN No Q Be a source of network triggers Interconnection Yes R Activate on network triggers Interconnection Yes T Event Processing seis foe seen eS BG Be a eae ey eg ee None e Adjust the following parameters according to your set up by pressing Q or R
6. d pairs and a shield in order to prevent it from picking up interference The cable glands of the interconnection box support cables with diameter between 5 and 6 5 mm Another important aspect is the diameter of the conductor required which is a trade off between total length of the bus network and the conductor diameter Maximum total cable resistance both ways is 2 50 Ohm Table 1 shows the relationship between cable cross sections and maximum network lengths Table 1 Cable cross sections vs maximum network length Cross section Resistance Maximum network length mm3 Ohm km m 0 20 89 0 500 0 25 71 2 700 0 35 50 9 900 0 5 36 6 1300 A way to reduce the cable resistance is to connect two pairs in parallel This effectively reduces the resistance by factor two and doubles the maximum length EB In case if the interconnection network is planned to be longer than 1300 m please contact GeoSIG for assistance 3 Configuration The instrument must be set up according to the GMSplus User Manual so that the communication is established and parameters can be changed The following chapters just guide through the settings in relation with the interconnection network For any other adjustments consult the GMSplus User Manual 3 1 Common Time e Press O to select the Miscellaneous Parameters menu Main Menu A Station description GMSplus GeoSIG Ltd BJ Statron C
7. fferences in local earth potentials The protection is realised in the following ways e Advanced Lightning and over voltage protection is implemented in the Interconnection Junction Box e An interconnection option board which takes care of the galvanic isolation is installed in the instruments Figure 1 shows the Interconnection Junction Box which is used along with each recorder Figure 1 Interconnection Junction Box 150 x 150 x 80 mm The interconnection wiring is site specific and normally carried out by the customer In order to achieve a maximum protection and system reliability a couple of important points regarding shielding and earth must be taken care of during installation This is mainly in relation with earth and cable shield connections and described in the following chapters GS_GMSplus_UserManual_App_ICC_V01 doc GMSplus User Manual Appendix Simple Interconnection Network 20 05 2015 V1 2 2 Connection to the Instrument The instrument is connected to the nterconnection Junction Box over the INTERCON connector on the front of the instrument The related cable with a length of approximately 2 m is already mounted on the Interconnection Junction Box and can be easily plugged to the instrument It s important that both the instrument and the junction box are connected to local earth There is an earth screw on the Interconnection Junction Box and the base plate of the instrument which can be used for this
8. il over the contact bushing and cut off the protruding shielding material 7 Feed cable through the already moun ted lower part of the cable gland 8 Insert sealing insert and contact bus hing flush into the lower part 9 Tighten compression nut to the lower part until the sealing insert forms a small ridge between the compression nut and the cable GS_GMSplus_UserManual_App_ICC_V01 doc
9. l always go to the Pin 1 of the next Interconnection Junction Box Pin 2to Pin2 and so on 2 3 2 Earthing All Interconnection Junction Boxes and Instruments must be properly connected to the local earth The cable shield must be connected to the earth on one location only to avoid a ground loop on the cable Therefore inside all Interconnection Junction Boxes the cable shield must be connected to the provided cable socket with one exception In one 1 Interconnection Junction Box the cable shield must be connected to the housing as described in Appendix A For all others use the internal cable socket For details see Figure 5 on the right side 2 3 3 Termination of the BUS In the first and the last Interconnection Junction Box on the BUS a terminal plug see Figure 6 must be connected to the free connector See also blue boxes in Figure 5 on the right side The terminal plug is terminated with resistors between pins 1 2 and 3 4 according to the impedance of the interconnection cable As standard 120 Ohm resistors are provided Terminator see chapter 2 3 3 Figure 5 Bus cabling Figure 6 Terminal plug GS_GMSplus_UserManual_App_ICC_V01 doc GeoSIG GMSplus User Manual Appendix Simple Interconnection Network 8 11 20 05 2015 V1 2 3 4 Interconnection Cable The appropriate choice of the interconnection cable is important for the functionality of the network For all network types the cable has to have twiste
10. lable the Time Slave Instruments use their internal clock These instruments must be configured as described in chapter 3 1 1 2 Common Trigger Triggering functionality of each recorder can be controlled using the configuration options Be a source of network triggers and Activate on network triggers By enabling or disabling these functionalities the behaviour of each instrument can be defined precisely as needed in the particular application This functionality can be summarised as following for detail settings see chapter 3 2 Be a source of network triggers It can be selected if the instrument transmits an active trigger message to the network if an internal trigger condition is fulfilled Activate on network triggers It can be selected if the instrument triggers on an active trigger message arriving from the network Record on network triggers only It can be selected if the instrument should record on network triggers only and ignore all internal triggers GS_GMSplus_UserManual_App_ICC_VO1 doc GMSplus User Manual Appendix Simple Interconnection Network 20 05 2015 V1 2 Installation 2 1 Overview The Interconnection Junction Boxes are supplied in order to facilitate on site wiring Since these networks can extend over hundreds of meters involving long cables the nterconnection Junction Box provides additionally advanced protection against over voltages such as electrostatic discharges and lightning and di
11. ode vun GSGMS C Location description Switzerland D Seismic network code GS E Number of Channels 3 F Number of Output Streams 0 G Number of Trigger Sets 2 H Number of Preset Triggers 0 I Channel Parameters gt K Trigger Parameters gt File Storage and Policy gt N Communication Parameters gt O Miscellaneous Parameters gt e Then press K to get to the Time synchronisation menu to adjust the settings of the time synchronisation GS_GMSplus_UserManual_App_ICC_VO1 doc GMSplus User Manual Appendix Simple Interconnection Network 20 05 2015 V1 9 11 Menu Offset Offset Offset Main gt Miscellaneous detection time correction time correction counts EE eee E 10 een 5 Gira Wadler URN ERERERERNE 1 0x04 0x05 0x01 iniSE JO Q State Test amp essag Time f Time f Deran mu nung ZR E c HHn Extended MiniSE Time synchronization Instrument configuration options ED record length ED format of health onfiguration ing and debugging hour minute 0 or sending daily logfile or sending daily logfile e The following menu appears Menu Time s RTC wa Offset Send SOH upon RTC status change Miscellaneous Time Synchronization ource tchdog timeout
12. trument nerne er a aE aE a aE an 4 1 1 2 Time Slave Instruments 3 chen am Laie AAAA A Aa OEE AEAEE sass 4 1 2 COMMON TGQ sissie ie iaieineea aeaee a aa Eaa ae aK es aadidesacaeadyed AE aN aia 4 2 Installation ee re a ern eserenree 5 PA ss OVEIWIOW ASCSEPHBEREEFELBEERBEEHEREEDENLEBENBEFEELHESTEEEEEEEEEFERENEEEESEEEEUEHEREESTERLERTORESERENLRUPSEETREESERERTEEEEE FIRE E 5 2 2 Connection to the Instrument 2ucs0senenessnsnsnnnnennnnnnnnnnnnnnnennnnnnnnnnnnnunennnnnnnnnnnnnunennnnnnnnnnnnnnnnnnnnnennenn 6 2 3 Connection to the Interconnection BUS uuueesenssessssnnnsnenunnnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnn 6 2 3 14 GAMING as een E E E 7 2 3 2 E ftHiNd een are 7 2 3 3 Termination Of the BUS 2 2 a aa ese anne 7 2 3 4 Interconnection Cable tansan a E E a E aa e eE ae len 8 3 COmgUr ANON ee AAT 8 SA COMMON TINO e e E a a E a EN 8 3 2 COMMON TAJO eestaas iaeaea raae aces tastes aaia aeaa Eae RaR aapa iaaiaee 10 Appendix A Assembly Instructions for Cable Glands with Shield 22 11 GS_GMSplus_UserManual_App_ICC_V01 doc GeoSIG GMSplus User Manual Appendix Simple Interconnection Network swiss made to measure 4 11 20 05 2015 V1 1 Introduction If several instruments with internal or external sensors are placed on site they can be interconnected with one cable while galvanically isolated from each other For convenient cabling and advanced o
13. ver voltage protection external junction boxes are supplied The interconnection between the stations is carried out in a BUS topology Distances between the two most far located stations can be as much as 1 3 km This is a favourable and cost effective solution for many applications 8 This Interconnection Network covers common time and common trigger only In case data transfer should be handled over the interconnection network as well please contact GeoSIG Ltd 1 1 Common Time One of the interconnected instruments normally is connected to GPS or NTP for accurate timing hereafter called Time Master Instrument This instrument synchronise its internal clock to the GPS or NTP server and provides an accurate timing signal to all other instruments connected to the network hereafter called Time Slave Instruments 1 1 1 Time Master Instrument The Time Master Instrument can be any instrument in the BUS so it does not have to be the first or last instrument in the chain The Timing Master Instrument must be connected to a GPS or NTP server for accurate timing Additionally this instrument must be configured as described in chapter 3 1 1 1 2 Time Slave Instruments All the Time Slave Instruments synchronise their internal clock to the accurate time signal distributed by the Time Master Instrument These instruments within the network permanently check their synchronisation status In case of not having the network time information avai
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