Vemco VR4-UWM User Manual Download Page 63 | Manualshive

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Vemco VR4-UWM User Manual Download Page 63

VEMCO – VR4-UWM Manual

57

7.2

VR4-UWM related questions

7.2.1

How much detection range can I expect from my tags and receivers?

Detection range depends on so many factors that it is difficult to estimate without knowledge of the
environment and prior experience with telemetry. Range depends on transmission power, signal absorption,
line of sight, reflection/refraction, multipath and environmental noise (man-made & natural), and the
receiving quality of the receiver/hydrophone. Typically areas that have clear water, sand or silt flat bottoms
and low current exhibit the greatest ranges. Conversely, areas with turbid water, complex rocky bottom
topography and high current exhibit low ranges. In all cases, extreme weather events and periods of high
wind (waves) may significantly reduce range.

In most cases greater transmission power output (dB) results in greater range. For example, in good
conditions a V7 to VR4-UWM range test could yield a range of 300-400 m and a V16 to VR4-UWM test
could yield ranges of 600 - 800 m. There are some exceptions where high power and a reflective and low
noise environment may cause detection breakdowns.

Please try our range calculator at

www.vemco.com/products/vr4-uwm/?tutorials-and-tools

, but only use the

results as a guide. One should always perform range testing to determine appropriate receiver spacing. For
the enthusiast who wants to learn more about sound propagation try the widely accepted reference on
underwater sound by Urick (1983). (Urick, Robert J. Principles of Underwater Sound, 3rd Edition. New
York. McGraw-Hill, 1983.).

7.2.2

How long will my VR4-UWM battery last?

A battery in a VR4-UWM receiver can operate between 19 months and 117 months, depending on the type of
battery being used (lithium or alkaline) and the channels that are being used (69 kHz, 180 kHz, or both).
More information is found in section 6.8).

7.2.3

How do I determine the Modem Address?

If the VR4-UWM is not in the water, you can use the Bluetooth interface to connect with the VUE software.
It will report the modem address.

If the VR4-UWM is in the water, then you can use the Scan feature of VUE to search for VR4-UWM
receivers within range and ask each for their serial number and modem address. The software will continue
to scan for VR4-UWM receivers until one is selected or the scanning process is terminated.

7.2.4

Does receiver orientation matter?

Yes. The VR4-UWM must be deployed in a vertical position with the acoustic modem pointing towards the
surface to allow acoustic communication with the surface modem unit.

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Summary of Contents for VR4-UWM

Page 1: ...How to use the VR4 UWM receiver www vemco com 28 May 2018 DOC 5141 10 ...

Page 2: ...4 UWM using Bluetooth wireless or the acoustic modem Section 4 Deployment Important points to consider in a deployment plan Section 5 Maintenance Caring for the equipment including replacing the battery and preparing the receiver for storage Section 6 Additional Information Additional information about the VR4 UWM that is good to know but not mandatory for basic operations Section 7 Common Questio...

Page 3: ... 4 3 Exit Suspend Mode 13 2 4 4 In air testing with Bluetooth 14 2 5 Acoustic Modem Communication 16 2 5 1 Surface Modem Setup 16 2 5 2 In air testing with acoustic modem 19 2 5 3 Establish Acoustic Communication 20 2 5 4 Inspect Case 21 2 6 Water Test 22 3 Communication 23 3 1 The Receiver tab 23 3 2 Common Communication features 26 3 2 1 Start a Study Record Mode 26 3 2 2 Unlock a VR4 UWM 28 3 2...

Page 4: ...s 48 6 2 1 Update VR4 UWM firmware 48 6 2 2 Update map 48 6 3 Set Local options 50 6 4 Flash Memory 51 6 5 Power On Self Test 51 6 6 Diagnostic Sensors 52 6 7 Optional External Connector 52 6 8 Battery 53 6 9 USB to RS232 Converter Installation 54 7 Common Questions 55 7 1 VUE related questions 55 7 1 1 How when do I change my receiver code map 55 7 1 2 What is initialization 55 7 1 3 What Date Ti...

Page 5: ... 2 2 2 Pressurized Hydrophone Housing 62 8 2 3 Popped Pressure Relief Valve 63 8 2 3 1 Post Deployment 63 8 2 3 2 Newly Delivered From VEMCO 63 9 Appendix 64 9 1 Contact Information 64 9 2 Hazardous Materials 64 9 2 1 Shipping Restrictions On Lithium Batteries 64 9 2 2 Contaminated VR4 UWM 64 9 2 3 Disposal of Old Batteries 64 9 3 VR4 UWM Specifications 65 9 3 1 General Specifications 65 9 3 2 Rep...

Page 6: ...r trademarks and trade names are those of their respective owners WARNING If the VR4 UWM is not used in the manner specified in this manual then the manufacturer s warranty protection may be voided IMPORTANT NOTICE INITIALIZE VR4 UWM BEFORE DEPLOYING To initialize the receiver use the magnet and the PC software Detailed instructions are located in this user s manual DO NOT OPEN THE CASE This recei...

Page 7: ... that can last many years depending on system settings and battery type alkaline or lithium The VR4 UWM receiver is powered by a custom battery pack with an integrated fuse and EEPROM device for tracking the remaining capacity The VR4 UWM is shipped with the battery installed and connected so there is no need to disassemble the receiver to connect the battery To avoid consuming the battery during ...

Page 8: ... 2 0 and greater The VR4 UWM records the tag code ID number the date time of valid detections and sensor data if the acoustic tag received is equipped with a sensor This information is stored in the receiver s memory until offloaded from the receiver to a PC running VUE software using either the acoustic modem or Bluetooth wireless communication VR4 UWM Quick Facts Dimensions Height 50 3 cm 19 81 ...

Page 9: ...istens to 69 kHz Mounting hole Six holes are equally spaced around the bottom and top of the case section 4 1 Status Light Pressure release valve The light flashes to indicate the receiver s status Section 1 2 2 has the full description The Release Valve will open if the internal pressure is greater than the external pressure see section 1 2 3 Never cover this valve Lid Houses the hydrophones mode...

Page 10: ...on Channel 2 Heartbeat VR4 UWM is in operating mode at 180 kHz channel 2 is on 1 short flash Ping detected on channel 1 69kHz Ping detected on channel 2 180kHz 1 long flash Tag detection stored on channel 1 69kHz Tag detection stored on channel 2 180kHz Long flash once per second Bluetooth ready to accept connection from PC N A On continuously Bluetooth is connected to the PC N A None Either VR4 U...

Page 11: ...nal External Connector An external RS 232 serial interface is available as a factory option This is a pass through port that allows the acoustic modem to communicate with supported third party instruments Currently only the Satlantic Benthic Pod instrument cluster is supported by VUE Hydrophone Pressure Relief Valves one on each hydrophone Main Case Pressure Relief Valve Inspect the pressure relie...

Page 12: ... the VR4 UWM compact modem The table below lists the time required to offload different amounts of data using the modem at various bit rates These values assume there are no transmission errors The VUE software detects transmission errors and automatically requests a re transmit of the bad packet ensuring that data is offloaded correctly Of course the more errors that occur the longer the offload ...

Page 13: ...ent These can cause the VR4 UWM and or the Deck Box transducer to move around making it difficult to control their position and orientation When planning a VR4 UWM study consider the local conditions and choose locations where the adverse effects are manageable 1 3 2 Modem Address Each VR4 UWM is assigned a modem address which is a number from 1 to 249 that is used to distinguish different VR4 UWM...

Page 14: ...transducer section 2 5 1 6 Communicate with the receiver using the modem while the receiver is still in air section 2 5 3 7 Perform an in air test while using the acoustic modem section 2 5 2 8 Inspect case for any damage or potential problems section 2 5 4 9 Perform an in water test to test the equipment section 2 6 and familiarize yourself with modem communication section 2 6 10 Setup the study ...

Page 15: ...unication See section 0 for details Follow the link in the VUE email you received VUE is also available at www vemco com downloads STEP 1 Read the license agreement and select I accept and Next if you agree to the terms STEP 3 Click Next to install VUE in the folder shown or click Change to select a different folder STEP 4 Click Next when the Install Shield Wizard begins STEP 2 Click Finished to e...

Page 16: ...rough the icon NOTE Communication difficulties may occasionally occur when the red X is not present If this happens follow the suggestions in the Bluetooth Troubleshooting Guide available on our website 3 Connect to the receiver Instructions are found in the receiver s user manual If a Bluetooth connection cannot be established with the receiver try using the VEMCO supplied Bluetooth USB adapter a...

Page 17: ...at use a Comm Key such as the VR2W WARNING The Communication Key contains a strong magnet Do not put it near magnet sensitive materials such as CRT computer monitors or magnetic stripes as they could be seriously damaged MAGNET FLOAT COMM KEY Watch for a flashing red light on the VR4 UWM s top flashing at a one second interval and then remove the key STEP 2 Bright red flash every second The flash ...

Page 18: ...s for receivers STEP 1 All Bluetooth activated VEMCO receivers within communication range within 10 meters 32 feet will be displayed when a Device Scan is performed When the software finds the receiver a VR4 UWM icon will be displayed in the Bluetooth Devices section of the Home tab with the receiver s serial number for identification It will display all Bluetooth activated receivers LED is flashi...

Page 19: ...mation on setting up a Study is found in section 3 2 1 Always bring VR4 UWM out of Suspend mode before deploying receiver The receiver won t communicate via the acoustic modem when it is in Suspend mode Click the red and blue Start Recording button found in the receiver tab s ribbon This button is not available if communication between receiver and VUE software is not present STEP 1 Review the PC ...

Page 20: ...pproximately 2 3 cm 1 from the 180 kHz hydrophone the one with the smaller tip with the side of the tag facing the side of the hydrophone Do not hold the tag too close Make sure there are no obstructions between the tag and the hydrophone A VR100 receiver may be used to audibly confirm when the tag is transmitting 5 Watch the status light on the VR4 UWM receiver The light will flash yellow briefly...

Page 21: ...the number of detections and pings received as listed in the Receiver tab see sample below 8 Close the VUE software when you are finished If you hold the tags near the hydrophones while VUE is connected to the VR4 UWM you should see the ping and detection counts shown on the PC screen incrementing but the status light will not blink for pings while Bluetooth is active ...

Page 22: ...e signal sent from the Benthos surface transducer is listed as Power Down and the power of the signal being sent up from the VR4 UWM is listed as Power Up The other key feature is the bit rate or the speed at which the data is sent This can be different for the data being sent down from the Benthos surface transducer Bit Rate Down and the signal being sent up Bit Rate Up The bit rate can vary from...

Page 23: ...ove the dummy plug from the surface modem transducer This requires twisting the locking collar until it is free and then pulling the plug from the connector A gentle wiggling motion while pulling the plug body not the tail may help STEP 1 Always replace the dummy plug when the transducer is not connected to the modem cable Continued Tighten the locking collar onto the transducer to give the cable ...

Page 24: ... for charging details STEP 5 The Power and Transducer connectors on the Deck Box are keyed so they can only be attached in the proper orientation Line up the tabs on the cable connector with the gaps on the box connector Turn on the Benthos Deck Box STEP 8 TIP Adjust the speaker volume on the Benthos Deck Box see the Benthos manual for detail to listen to the 2 way acoustic communication Use the s...

Page 25: ...Turn on the Deck Box speaker see Modem manual for details to monitor the acoustic communications 4 Start the VUE software and establish communication with the VR4 UWM see section 2 5 3 The recommended settings for modem use in air are listed below VUE is usually set for Automatic Tuning so there should be no need to adjust the settings Deck Box power 18dB baud 300 bps VR4 UWM power 12dB baud 1066 ...

Page 26: ...re uncertain of the serial number then click the Scan button and select the desired receiver from the list of receivers that respond STEP 3 Enter the Modem address which can be found in the receiver specification sheet If you re uncertain of the modem address click the Scan button VUE will search for the receiver and connect to it automatically when it is found STEP 4 Wait for communication to beg...

Page 27: ...e resistance as there is an O ring in the valve In the event that any section of the VR 4UWM case becomes internally pressurized for example due to a leak at depth the relief valve will pop open to vent the pressure preventing a dangerous pressure level from building up If you retrieve a VR4 UWM from water and find that a pressure relief value has popped open contact VEMCO for instructions Never b...

Page 28: ...permanent deployment Local conditions can have a significant impact on acoustic signal propagation and detection as can mooring fixtures and other co located equipment that might interfere We encourage you to contact VEMCO to discuss the best ways to conduct on site testing For a detailed discussion on range testing visit www vemco com products vr4 uwm tutorials and tools ...

Page 29: ...que to acoustic communication 3 1 The Receiver tab Each receiver currently in communication with VUE has a tab at the top of the VUE window This tab identifies the type and serial number of the receiver Click on a tab to bring it to the front of all the tabs making the receiver s information visible This receiver tab is where most of the communication occurs with the VR4 UWM Because the two forms ...

Page 30: ...ion contains tasks and advanced options including offloading data firmware upgrades recording initializing and ending communication Receiver information specific to this VR4 UWM is contained in the center of the window Click Refresh to refresh the receiver information shown CAUTION Verify the receiver you are communicating with is the intended unit particularly before initializing and erasing rece...

Page 31: ...data firmware upgrades recording initializing ending communication locking and suspending the receiver The Receiver information specific to this VR4 UWM is contained in the top half of the Receiver Tab window Modem information and modem communication status is contained in the bottom half of the Receiver Tab This is only visible during modem communication Modem Communication Tuning Options can be ...

Page 32: ...d even a description of the study such as the study s title or other information This information is stored in the VR4 UWM and offloaded with the data It can be very useful when data is being organized in the VUE software Click the red and blue Start Recording button found in the receiver tab s ribbon This button is not available if communication between receiver and VUE software is not present ST...

Page 33: ... sure the frequency you are working with is checked or the VR4 UWM will not be listening for your tags Select one of the three options displayed ERASE when data stored in the VR4 UWM has already been offloaded and you wish to erase the data and begin a new study OFFLOAD when the data has not been offloaded from the VR4 UWM or if there is any uncertainty about the data being offloaded CANCEL when y...

Page 34: ...ssary to lock a receiver with a password but the option is available If the receiver is locked the Unlock button is shown a gold lock and a flashing red Locked appears in the receiver view area of the receiver tab Click on the Unlock button and enter the password to unlock the receiver If a receiver is password enabled but not locked the Lock button is shown a silver lock and the Password is liste...

Page 35: ...s of if the data is directly imported in to the VUE database or not If a database is not open when data are offloaded then the data will automatically be saved in the file format s and in the directory selected in the Options window Establish communication between the VR4 UWM and the VUE software using either Bluetooth if in air section 2 3 or the acoustic modem section 2 5 3 if in water STEP 1 Cl...

Page 36: ...iding the risk of damaging the case seals that might occur if the VR4 UWM were disassembled to disconnect reconnect the battery The VR4 UWM can be stored in Suspend mode for an extended time with negligible impact on the battery life It is not possible to place the VR4 UWM into or take it out of Suspend mode using the acoustic modem For this reason it is important that a receiver never be in Suspe...

Page 37: ...e is adjusted automatically Use the Advanced tuning option section 3 4 2 if the power settings need to be adjusted such as increasing the power to compensate for an increased distance from the receiver or to decrease the power to lessen the echoes produced in an acoustically reflective area 3 4 2 Advanced tuning By default the VUE software has the modem tuning set to Automatic Tuning but there are...

Page 38: ...c signals and requires a lower power setting then start with the same power setting at your next visit since the bottom is probably still very reflective 5 Power scale 0 dB is the highest power signal strength and 21 dB is the lowest power level Using a high power level when it is not necessary can saturate the area with acoustic signals and reduce conditions for communication 3 4 3 Range Updates ...

Page 39: ...king the Refresh icon in the top right corner of the receiver status The range command can be sent manually or automatically as explained in section 3 4 3 6 Errors encountered in transmitting data from VR4 UWM to surface require data to be re transmitted If this occurs try a Moving the slider closer to Reliable b Click the Advanced box and make adjustments based on suggestions in section 3 4 2 7 Y...

Page 40: ...l contact with the VR4 UWM case and Bluetooth communication to be established both of which are not possible to do after the receiver is underwater 4 1 Mooring Line Attachment The VR4 UWM must be deployed in a vertical position with the modem and hydrophone towers pointing up The case has 12 attachment holes for use in mooring the receiver in the desired location These holes are shown in the diagr...

Page 41: ...tical and will remain so Future communication with the receiver may be restricted if the receiver is not vertical The range to the VR4 UWM receiver is shown in the Benthos modem information on the Receiver tab This value is the distance between the surface modem and the VR4 UWM not necessarily the depth to the receiver as illustrated in the pictures below The range red line is the same in all thre...

Page 42: ... detection probability in most or all weather conditions It is not always necessary to have 100 coverage if you have several other locations where you know the animals will be passing through However if you wish to accurately quantify the passing of animals through receiver locations then you should strive for 100 detection probability Typical spacing is usually between 100 and 1 000 meters 4 3 3 ...

Page 43: ...y to remove dirt mud and marine growth Rinse it with fresh water to remove any salt residue Only open the VR4 UWM case when replacing the battery WARNING It is vitally important that the electronics inside the receiver case do not come in contact with any water or the receiver will be damaged For this reason VEMCO recommends the VR4 UWM be opened in a controlled environment and not in the field or...

Page 44: ...t and bolt directly opposite the first nut and bolt and repeat Step 4 Continue loosening the bolts three or four half turns as numbered in the photo here When all six nuts are loosened repeat the cycle until all nuts loosened enough that they are no longer in contact with the receiver case It is then safe to remove the nuts completely and in any order Store the bolts nuts and washers in a safe loc...

Page 45: ...oto is an O ring surface and must not be damaged or the receiver may flood with water when submerged Position the lid and chassis so the battery is facing up Be sure the receiver can t roll STEP 1 Battery Connector Disconnect the battery wires from the chassis by pressing the release tab on the connector and carefully pulling it out of the white connector attached to the chassis STEP 2 Remove the ...

Page 46: ...o proper environmental procedures in your area STEP 5 Position the lid and chassis so the flat battery location is facing up STEP 1 Place the battery on the chassis so the battery wire see arrow in photo extends through the hole in the end of the chassis STEP 2 Desiccant packs reduce the occurrence of condensation in the receiver These packs should remain in the receiver case during storage and de...

Page 47: ...eps 4 and 5 for the remaining rubber tie at the other end of the battery STEP 6 Battery Battery Connector Plug the battery wire s connector into the white connector on the chassis until you hear a click and the connector won t move any farther The two connectors will only fit together in one orientation STEP 7 Immediately look at the status light on the top of the receiver case It should flash 11 ...

Page 48: ... and or a lint free swab DO NOT use an object that may scratch or damage the surfaces in the groove STEP 3 Clean the O ring surface on the flat underside of the lid found between the holes around the outside of the lid and the lip attached to the battery electronics in the center Use a clean lint free cloth and or a lint free swab DO NOT use an object that may scratch or damage the O ring surface ...

Page 49: ...o the smaller inner groove and the larger O ring fits into the outer larger groove Repeat Step 4 to grease the other O ring and place it in the other groove Grease the each O ring separately and immediately place them in the case so no dust debris can get on the O rings Use your gloved fingers to evenly spread O ring grease we suggest Molykote 55 over the entire surface of one of the O rings suppl...

Page 50: ... of the case see photo on left to the black connector on the end of the chassis STEP 2 Slide the chassis and battery into the case while slowly rotating it side to side to keep battery foam from pulling If there is an external connector ensure the cable coils up neatly Line up the alignment peg with the largest hole in the collar see photo below STEP 3 Verify that the O ring surfaces the two groov...

Page 51: ...titanium nut with locking insert onto the bolt Repeat Steps 6 and 7 until all the bolts and washers are in place STEP 7 Slide the hexbolt through the hole in the cage through the lid and through the collar STEP 6 1 2 3 4 5 6 Move to the nut and bolt directly opposite the first nut and bolt and repeat Step 8 Continue tightening the bolts two or three half turns each as numbered in the photo here un...

Page 52: ...hat the O rings are properly seated in their grooves as the lid is moved into position 5 3 Cleaning Instructions Clean the outside of the VR4 UWM with a damp cloth or scouring pad and mild detergent Rinse it with fresh water Clean seal surfaces with a soft clean lint free cloth Do not use solvents Do not use a scraper or abrasive cleaner on the status light window or the seal surfaces Never strike...

Page 53: ...f damaging the seals that might occur if the VR4 UWM were disassembled to disconnect reconnect the battery The VR4 UWM can be stored in Suspend mode for an extended time with negligible impact on the battery life It is not possible to place the VR4 UWM into or out of Suspend mode using the acoustic modem To put a VR4 UWM into Suspend Mode During Bluetooth communication see section 0 click the Ente...

Page 54: ...ture If it is selected the password must be entered before the study is initialized and again each time the settings on the receiver are changed or the data is offloaded 6 2 Update Receivers 6 2 1 Update VR4 UWM firmware While communication is established between the VR4 UWM and the VUE software click the Set advanced device options button shown at right and an Open window will appear Select the f...

Page 55: ... offset must be correct 5 Select to erase the old data and begin the study only select this option if the data has already been offloaded to the computer 6 Select Show Advanced Settings in the Study Configuration window 7 Click on the down arrow to the right of the old Map name MAP 113 in this case and select the new map MAP 114 8 Click the OK button to begin the study 9 Verify that the Status lig...

Page 56: ...here are queries that have been suppressed To enable a query select Always Ask and that query will be enabled the next time that feature is used For example if Confirm before closing VR4 is selected then a query will open the next time a VR4 UWM is closed Changing an action is also possible in the Control Setting window without enabling the query For example if No was selected when the Import offl...

Page 57: ...min 89 90 months 30 min 15 540 months The data accumulation rate is a key factor in planning a study This will drive how frequently you will need to visit the receiver to offload data using the acoustic modem and how much time will be required for each offload The acoustic modem has a relatively slow transfer rate 300 1200 bps depending on site conditions so offloading a large volume of data can t...

Page 58: ...4 UWM Normally the VR4 UWM should be deployed in the upright position with the transducers pointing toward the surface tilt is close to 0 A significant tilt angle indicates the receiver may have deployed incorrectly or its mooring structure has toppled over 6 7 Optional External Connector The body of the optional external connector is made of brass It is normal for it to discolour but it should re...

Page 59: ... problem in some areas These restrictions are explained in section 9 2 1 Alkaline battery packs do not have transportation restrictions Estimated battery life Estimated Life with Tadiran Lithium Battery Alkaline Battery both channels on 71 months 19 months only 69kHz channel on 117 months 31 months only 180kHz channel on 84 months 22 months Battery life estimates are based on typical usage of down...

Page 60: ... time the device is identified as USB Serial Port Select Yes This time only and click Next 6 Select Install software automatically recommended and click Next 7 Click Finish 8 Open the Windows Control Panel and then select System to open the System Properties window 9 Click the Hardware tab in the System Properties window and then click on the Device Manager button The Device manager screen will op...

Page 61: ...omputer clock The receiver clock is always updated based on your PC clock during the initialization process This information will be resident with the VR4 UWM and will be available during offload regardless of whether you use the same computer or not Initialization also erases the receiver log files so be sure to offload data from your receiver before initializing it When data is offloaded from a ...

Page 62: ...ture mean There are a number of pop up windows that appear while using the VUE software These windows are wonderful when you re just learning the software or when you ve been away from it for an extended period of time but they can be very annoying when you re in the middle of a big study A number of these pop up windows have a selection box in the bottom left corner that say something along the l...

Page 63: ...at www vemco com products vr4 uwm tutorials and tools but only use the results as a guide One should always perform range testing to determine appropriate receiver spacing For the enthusiast who wants to learn more about sound propagation try the widely accepted reference on underwater sound by Urick 1983 Urick Robert J Principles of Underwater Sound 3rd Edition New York McGraw Hill 1983 7 2 2 How...

Page 64: ...dating to the latest version of VUE is the best way to ensure compatibility See the VUE Software section at www vemco com downloads for the latest download 3 Are incompatible drivers installed The Bluetooth adapter must be configured to use drivers supplied by Microsoft These drivers are installed automatically in Windows 7 or manually through VUE in Windows Vista Do not install drivers from any o...

Page 65: ...ss the Device Manager when the Control Panel is in Classic View select System then Hardware then Device Managers and then Bluetooth Radios To access the Device Manager when the Control Panel is in Category View select Performance Maintenance then System then Hardware then Device Managers and finally Bluetooth Radios Highlight any radio devices other than VEMCO devices and select Disable under the ...

Page 66: ...er Allowing the receiver to warm up often eliminates this vacuum Alternately locate the alignment peg hole on the bottom side of the collar It s the center hole in the only group of three holes in the receiver s collar see photo below Insert a sturdy cylindrical blunt ended tool in this hole a VR2W bar or one of the bolts removed from the lid work well and give it a gentle tap to release the O rin...

Page 67: ... must be taken The VR4 UWM has pressure relief valves in the main case and both hydrophones which are designed to vent pressure before it reaches a dangerous level These valves require a certain amount of pressure before they will pop open so it is still possible that some pressure could be present even though the valves have not opened It is also possible the valves could have been blocked or fou...

Page 68: ...4 Go back to Step 2 and repeat until the bolts are all loose and move freely 5 Remove the bolts and the lid Note any strong chemical odour as this indicates the battery has ruptured and leaked corrosive materials Do not breathe the fumes and do not let any of the liquid get on your skin or clothing 8 2 2 2 Pressurized Hydrophone Housing If you suspect pressurization of one or both hydrophone housi...

Page 69: ...as popped but not the main housing valve the main electronics and battery could be fine Follow the instructions in section 5 1 1 to safely open the case and check for signs of leakage Do not re deploy the receiver Contact VEMCO Customer Support for assistance 8 2 3 2 Newly Delivered From VEMCO If you have received a new VR4 UWM from VEMCO never been deployed with a relief valve popped open during ...

Page 70: ... regulations for hazardous materials if shipping a VR4 UWM with the battery included or when shipping the battery alone If a VR4 UWM receiver needs to be returned to VEMCO you can remove the lithium battery and ship just the VR4 UWM to avoid the restrictions The alkaline battery is not restricted for transport 9 2 2 Contaminated VR4 UWM In the event a lithium battery has ruptured inside a VR4 UWM ...

Page 71: ...ttery Lithium Custom Tadiran PulsesPlus battery 10 8V 24 D cells Weight 2 58 kg 5 7 lbs Alkaline Custom battery 12V 24 D cells Weight 3 47 kg 7 6 lbs Battery Life See section 6 8 Memory 16 Megabyte Flash Memory approximately 800 000 detections Operating temperature 5 C to 40 C NOTE Water in which VR4 UWM is deployed must not freeze Shipping storage temperature 18 C to 50 C Static depth rating 500 ...

Page 72: ...p 20 x 3 Titanium bolt 6 required Titanium flat washer 6 required Titanium lock washer 6 required 20 Titanium nut 6 required 9 3 3 Optional External Serial Port VR4 UWM Connector Subconn MCBH6M Mating cable connector Subconn MCIL6F Dummy plug Subconn MCDC6F Locking sleeve Subconn MCDLSF Recommended lubricant Dow Corning Molykote 44 Medium Signal Levels RS 232 Pinout Pin Direction Signal 1 In RXD 2...

Page 73: ...at define the types of transmitters the receiver can detect Code Space Nomenclature for VEMCO tags which provides unambiguous description of the coding parameters for that tag type Station Name Name for a specific deployment location including lat and long parameters Offloading Retrieving data from a VEMCO receiver and storing it in a VRL file UTC Co ordinated Universal Time is a worldwide standar...

Page 74: ...reto shall at all times remain with the BUYER except that title to a returned accessory equipment part or Product shall pass to VEMCO concurrently with shipment to BUYER of any item furnished by VEMCO to BUYER as a replacement therefore VEMCO shall have only such responsibility for any Product accessory equipment or part owned by the BUYER and in the possession of VEMCO as is chargeable by law to ...

Page 75: ...e Value displayed 35 Range updates Automatic 32 Manual 32 Record mode 26 Indicator 27 Storage 47 Suspend mode 30 How to enter 30 How to exit 30 Testing In water 22 In Air with acoustic modem 19 In Air with Bluetooth 14 Tilt Value during deployment 35 VR4 UWM Cleaning 46 Features 2 Lock enabled receiver 28 Mechanical hardware 46 Memory 51 Optional external connector 5 52 Password protect 48 Statist...

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