AML Oceanographic Minos SVP User manual

Minos SVP
User Manual
Version 1.2 06 August 2009

User Manual for AML Oceanographic Minos SVP
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Table of Contents
Table of Contents............................................................................................ 1
General Description of the Instrument ........................................................... 2
Which Manual Do I Start With?..................................................................... 2
Shipping & Receiving..................................................................................... 3
Receiving an Instrument.............................................................................. 3
Returning an Instrument to the Factory....................................................... 3
Using the Instrument....................................................................................... 4
Pressure Ratings .......................................................................................... 4
Pre-Deployment Procedures........................................................................ 4
Configuring Sampling Parameters using SeaCast....................................... 4
Selecting an Instrument for Configuration ............................................. 4
Configuring the Selected Instrument...................................................... 5
Instrument Time, Memory & Log File Settings ..................................... 6
Configuring Sampling Parameters with HyperTerminal ............................ 6
Logging a Profile......................................................................................... 7
Monitoring Real Time Data ........................................................................ 7
Post-Deployment Procedures ...................................................................... 8
Viewing your Data ...................................................................................... 8
Maintaining the Instrument............................................................................. 9
Battery Care................................................................................................. 9
Charging the Lithium-Ion Batteries ............................................................ 9
Changing the Lithium-Ion Battery Pack ................................................... 10
Periodic Maintenance................................................................................ 13
Communications ........................................................................................... 14
PC Settings ................................................................................................ 14
Output Formats.......................................................................................... 14
Default output format................................................................................ 14
Default example outputs ........................................................................... 15
Customer Support ......................................................................................... 17
Troubleshooting......................................................................................... 17
AML Oceanographic Contact Info............................................................ 19
Appendices.................................................................................................... 20
Commands................................................................................................. 20
Technical Specifications............................................................................ 22
Wiring Diagram......................................................................................... 26
Mechanical Drawing ................................................................................. 27

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General Description of the Instrument
The AML Oceanographic Minos SVP is a high speed, high resolution, high accuracy instrument for
measuring sound velocity and pressure. The Minos SVP is capable of real-time data output when
connected to a computer via a cable or autonomous data logging using its own internal memory
and power. Optionally, the Minos SVP can be equipped with SV•Xchange™, the world’s only field-
swappable sound velocity sensor and/or P•Xchange™, the world’s only field-swappable pressure
sensor.
Which Manual Do I Start With?
AML Oceanographic’s instruments may be shipped with as many as four manuals:
•An instrument manual (ie. Minos SVP) which provides an overview on how to use and
maintain the instrument;
•A software manual (ie. SeaCast) which provides instructions on how to use the software to
configure the instrument and review instrument data;
•An SV•Xchange™ manual (for those instruments that have been SV•Xchange™ enabled)
which provides an overview on how to install and maintain SV•Xchange™ sensors;
•A P•Xchange™ manual (for those instruments that have been P•Xchange™ enabled)
which provides an overview on how to install and maintain P•Xchange™ sensors.
If you are configuring an instrument for field use or lab test, we recommend that you begin with the
software (SeaCast) manual.
If you are focussed on instrument maintenance, we recommend that you begin with the instrument
manual.
If you are wishing to swap an Xchange™ sensor, we recommend that you read the appropriate
Xchange™ manual.

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Shipping & Receiving
Receiving an Instrument
When an instrument is received at a new location it is prudent to perform the following steps to
ensure the instrument is capable of performing when required.
•Check the shipping container for signs of damage
•The shipping package should include all of the following items
oMinos SVP instrument
oData/Power cable
oRed shorting plug
oBlack dummy plug
oManual
oBattery charger
•Check for damage
oCheck the cable for slices or gouges
oCheck the connectors for corrosion in sockets and salt deposits
oCheck the pressure case for dents and scrapes
oCheck the sensors for cracks or bends
•Check tightness of connection of any swappable sensors (see the Xchange™ manuals for
more details on required tightness)
•Connect the instrument to a computer with the data cable and perform a scan or monitor if
using SeaCast. Check the battery voltage on the output (normally the last column of data
unless calculated parameters have been enabled). It should be between 7.1 and 8.4 volts.
Returning an Instrument to the Factory
•If shipping for repair or recalibration obtain an RMA number from the service centre.
Please refer to the section Contacting AML Oceanographic for contact details.
•Perform all the steps listed above for Receiving
•Pack the instrument to prevent damage during shipping

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Caution:
Do not e
xceed the specified pressure ratings of the
P•Xchange™
sensor or
the instrument housing. Overpressure can result in damage to the P•Xchange™
sensor and the instrument.
Using the Instrument
Pressure Ratings
Pressure ratings are given for both the P•Xchange™ sensors and the entire instrument. Any
deployment should never exceed the lower of these two pressure ratings. For example, a
500m instrument equipped with a 6000 dBar (0-6000m) P•Xchange™ sensor is limited to
deployments of 500m depth or less. Conversely, a 6000m instrument equipped with a 500 dBar (0-
500m) P•Xchange™ sensor is also limited to deployments of 500m depth or less.
It is desirable to optimize the accuracy of pressure measurements by selecting the P•Xchange™
pressure range that most closely matches the depth of the deployment.
Pre-Deployment Procedures
•4 to 6 weeks ahead
oUse the receiving steps above to verify the instrument is in good working order
oVerify the calibration is valid for the duration of the deployment. If not, send the
instrument or Xchange™ sensors to a service center for recalibration
oLightly lubricate the connectors with 3M silicone spray or equivalent
•Before leaving the jetty
oVerify the P•Xchange™ pressure range is appropriate for the depth of the
deployment.
oConnect the instrument to a computer using the data cable
oCheck the instrument memory
Save any unsaved memory files
Initialize the memory using ‘INIT’ command
Configuring Sampling Parameters using SeaCast
AML Oceanographic’s SeaCast application software greatly simplifies the process of setting up an
instrument to complete a profile.
Full details on the instrument configuration process can be found in the SeaCast manual. Below
please find a quick summary of that process:
Selecting an Instrument for Configuration
On the Instrument Tab, the first row of fields ‘Port’, ‘Baud Rate’ and ‘Status’ control and display the
communications with the instrument.
The ‘Port’ field allows the user to select the computer communications port to which the
instrument is connected. If uncertain about the port the user can check the ports in the

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Device Manager or Hardware Manager found in the control panel in the Windows operating
system. The ‘Refresh’ selection at the bottom of the list allows the user to force a new detection of
available ports. This is useful if a USB connection is made after SeaCast is launched.
The ‘Baud Rate’ field is used to select the baud rate the user wishes to use while communicating
to the instrument. Lower baud rates allow longer cables to be used if using RS-232/485/422.
Higher baud rates shorten the data transfer times. Choose 38,400 baud whenever possible.
If an instrument is set to autobaud (default setting) it will detect the baud rate chosen in SeaCast
and communicate at that baud rate. If the baud rate is changed in SeaCast the power to the
instrument must be cycled to re-establish communications at the new baud rate.
Some instruments are set up to communicate at fixed baud rates. In this
case the baud rate in SeaCast must be set to the same baud rate as the
instrument. If the instrument baud rate is unknown, the ‘Scan’ switch
below the ‘Baud Rate’ field can be used to have SeaCast cycle through
all the baud rates to try to detect the instrument baud rate.
The “Status” field shows the status of the communications with the instrument. The
green light indicates that communications have been established with the
instrument. During the identification process, SeaCast is determining the type and
serial number of the instrument and any connected sensors. During the settings
process, SeaCast is determining the latest sampling and logging settings that were
programmed into the instrument. When all the required handshaking has been
completed, the ‘Status’ field will show “Connected” and the user may now use the
instrument. Please note that the handshaking can take up to 30 seconds to
complete.
The Refresh button forces SeaCast to re-detect and re-identify the instrument and
its sensors.
Configuring the Selected Instrument
The box in the upper left of the Setup page controls the sampling of the instrument. There are
three sampling methods available:
•Sampling by Time Interval (ie. sample 25 times per second, 10 times per hour, every 5
seconds, etc.)
•Sampling by Depth Interval (ie. 1 sample every 1 dbar, 1 sample every 20 dbars, etc.)
•Sampling by Sound Velocity Interval (ie. 1 sample every time sound velocity changes by
more than 1 m/s, 1 sample every time sound velocity changes by more than 4 m/s, etc.)

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Sampling Method Selection Tab
SeaCast will allow the user to use only one sampling method at a time. Thus, if 5 samples per
second is chosen, as shown above, the depth and sound velocity increments are zeroed. This
prevents conflicting sampling requirements from being programmed into the instrument.
Instrument Time, Memory & Log File Settings
The memory fields show the size of the memory installed on the
instrument and the percentage of the memory that has been used.
The ‘Clear Memory’ check box allows the user to erase the entire
memory. A pop up warning window will be displayed if this check box is selected.
The ‘Log File Name’ field displays the current log file name that data will be logged to
in the instrument memory. The instrument log file name is limited to 8 characters plus
3 characters for the file extension. For example, data.txt, profile1.raw, or april.dat.
Please note this is the log file in the instrument not the export file for SeaCast.
The ‘Update Date/Time’ check box will synchronize the instrument clock to the computer’s clock.
Configuring Sampling Parameters with HyperTerminal
Instruments can also be configured for deployment using HyperTerminal or other terminal
emulation programs. As with SeaCast, communications with the instrument must be established
using the correct communications port and settings. The communications settings are 8 data bits, 1
stop bit, no parity, no flow control and the desired baud rate.
The following steps must be completed by issuing text commands.
Please consult the Commands section of the Appendix for full syntax details on how to issue the
commands in question. Please note that the following table provides example commands only;
many additional sampling regimes can be established.
Step Possible Commands
Initialize Memory (erases instrument memory) INIT
Set Log File Name SET LOG FILENAME.TXT
Set Instrument Time & Date SET TIME hh:mm:ss
SET DATE mm/dd/yy
Set Sampling Parameters SET SAMPLE RATE CONTINUOUS

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SET SAMPLE RATE 5/s
SET P INC 1
SET SOUND INC 2
Logging a Profile
•Ensure the pre-deployment procedures have been completed (see Page 3).
•Plug the data/power cable into the instrument.
•Ensure that the sampling regime has been selected and applied.
•Use the zero command to zero the barometric pressure offset.
•Insert the red shorting plug to power the instrument. Insertion of the shorting plug tells the
instrument to begin logging data once it is submerged. The instrument determines whether
or not it is submerged by looking for valid SV readings.
oThe green LED light should illuminate on the top of the instrument indicating the
battery has more than 20% capacity remaining and the instrument is ready to start
logging.
oIf the LED light is red the battery charge is less than 20% but the instrument is still
ready to log.
oIf the LED light fails to illuminate the instrument will not log. Refer to the
troubleshooting section of this manual if this occurs.
•Securely attach the lowering cable to the instrument shackle.
•Lower the instrument until it is just submerged. Keep the instrument at this depth for 2
minutes prior to beginning the cast. This allows the sensors time to wet and the pressure
case to shed heat.
• Send the instrument down to the desired depth and return it to the surface.
• Note that with the Minos SVP in the typical vertical orientation, the downcast is usually
more accurate than the upcast data since the downcast measurements are not
contaminated by the thermal shedding from the pressure case.
Monitoring Real Time Data
•Ensure the pre-deployment procedures have been done (see Page 3).
•Ensure that the sampling regime has been selected and applied.
•Plug the data/power cable into the instrument. If you power the instrument externally over
a long cable, please note the following:
oThe longer the cable the higher the voltage drop on the cable. The voltage drop
on a standard AML cable, with a standard Minos SVP, is about 1 volt per 100m of
cable while sampling and 0 volts per 100m when in low power mode.
oThe instrument’s auto shutdown voltage has a default level of 6.5 volts.
oThe instrument’s maximum voltage is 26 volts.
oThe voltage at the instrument, while sampling, must be above the shutdown level
for the instrument to operate.
•Use the zero command to zero the barometric pressure offset.
•Securely attach the lowering cable to the instrument shackle.

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•Lower the instrument until it is just submerged. Keep the instrument at this depth for 2
minutes prior to beginning the cast. This allows the sensors time to wet and the pressure
case to shed heat.
• Send the instrument down to the desired depth and return it to the surface.
• Note that with the Minos SVP in the typical vertical orientation, the downcast is usually
more accurate than the upcast data since the downcast measurements are not
contaminated by the thermal shedding from the pressure case.
Post-Deployment Procedures
•When the instrument is pulled from the water it should be rinsed in fresh water
•Dry the area around the connectors with a clean cloth or compressed air prior to
disconnecting the plugs or cables
•Remove the shorting plug or cable. Place dummy plug in the connector to protect it
•Dry the instrument and stow it securely.
Viewing your Data
You may download and view data using SeaCast or HyperTerminal. To download and review
data:
•Connect the instrument to the computer using the data/power cable
•Download the files to the computer:
oWith SeaCast, use the Choose Log File and Choose Cast buttons to retrieve the
cast of interest
oWith HyperTerminal, use the DIR command to list all the files on memory, use the
DUMP command to retrieve the file of interest

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Maintaining the Instrument
Battery Care
Incorrect care can reduce the life of the batteries. Below are some guidelines to prevent damage to
the batteries.
•Do not leave the data cable installed as the data cable has an internal short which
activates a line in the instrument to enable communication.
•Do not leave the red shorting plug installed.
•Before storing the instrument for several months charge the battery to between 7.3 to 7.7
volts (40 to 70% capacity). The battery will self discharge at a rate of 2% per month so
extended storage durations can require recharging to protect the battery from fully
depleting.
Charging the Lithium-Ion Batteries
•Ensure the instrument is dry.
•Plug the data cable into the instrument.
•Plug the charger into the data cable.
•Plug the charger into a 120 or 240 volt AC outlet and allow the instrument to charge until
the red charging light on the charger turns green. A full charge requires approximately 5
hours, however, the battery will reach 80% capacity within 2 hours.
The charger must be connected to the battery before plugging the charger into the AC
outlet for proper operation of the charger and charging light.
Warning: Do not operate the instrument while charging the Lithium
-
Ion batteries.

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Changing the Lithium-Ion Battery Pack
It is sometimes more efficient to swap a depleted battery pack with a charged battery.
A spare battery and charge connector can be ordered with the product code CSE-0013.
CSE-0013 - Spare battery and charge connector
To change the battery pack:
•Charge the spare battery.
oPlug the charge connector into the battery. Ensure the correct polarity! The latch
on the connector will engage.
oPlug the charger into the charge connector.
oPlug the charger into a 120 or 240 volt AC outlet and allow the instrument to
charge until the red charging light on the charger turns green. A full charge
requires approximately 5 hours, however, the battery will reach 80% capacity
within 2 hours.
The charger must be connected to the battery before plugging the charger into the AC
outlet for proper operation of the charger and charging light.
Charging the spare battery

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•Dry the instrument.
•Open the battery compartment on the instrument.
oRemove the four ¼x20 set screws in the instrument using a 1/8
th
inch hex driver.
oGrasp the shackle bar and slowly wiggle the end cap out of the instrument until it
reaches the soft stop. Do not twist or attempt to unscrew the endcap, this will twist
the internal cable harness and can damage the wires.
oSlowly pull the battery compartment just clear of the instrument.
oUndo the Velcro retainer, remove the battery pack and disconnect the battery
connector.

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oConnect the new battery connector. Ensure the correct polarity! The latch on the
connector will engage.
oPlace the battery pack into the holder and secure the Velcro strap. Tuck the
battery connector into the endcap.
oRe-insert the endcap into the instrument. Do not twist the endcap more than ¼
turn each way. Excessive twisting of the endcap will damage the internal wiring of
the instrument.
oReplace the four ¼x20 set screws.
oConnect the instrument to a computer perform a scan and check the battery
voltage. A fully charged battery will be approximately 8.3 volts.

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Periodic Maintenance
Periodic maintenance will prolong the life of the instrument. The following is recommended:
•If the instrument is very dirty or oily use warm soapy water and allow the instrument to
soak before cleaning with a rag or soft brush. Rinse with fresh water.
•Before each use
oCheck the battery voltage (a fully charged battery will be approximately 8.3 volts, a
low battery will be less than 7.1 volts)
oCheck the tightness of swappable sensors
oCheck for nicks and cuts on the cable
•After each use
oClean and rinse the instrument using fresh water
oDry and safely store the instrument
oPartially charge the batteries if storing the instrument for long periods
•Monthly
oLightly lubricate the connector contacts with 3M silicone spray or equivalent
oLubricate the retainer rings with silicone grease
•Yearly
oSend the instrument or Xchange™ sensors to a service centre for diagnostics and
re-calibration

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Communications
PC Settings
The Minos SVP will communicate with both RS-232 and RS-485 serial connections. The computer
to which the instrument is connected must be set up as follows:
•8 bits
•1 stop bit
•No parity
•No hardware handshaking
•Baud rate of 600, 1200, 2400, 4800, 9600, 19,200 or 38,400 baud
After power up, the Minos SVP will wait for an ASCII carriage return. The instrument will
automatically detect whether communications are RS-232 or RS-485 as well as the baud rate.
Output Formats
Output formats can be modified by the user. If the modifications required are not supported by the
common command list in the next section, please contact the factory and we will support your
requirements.
The user can change:
•The number of decimal places for each channel
•Turn on or off
odate and time
ocalculated parameters
obattery voltage
opower up information (header)
oautomatic monitoring on power up
Default output format
The output from the Minos SVP is space separated values. There are commands to change the
delimiter to tab or comma separated values if required. The default data channel output is:
Date Time Sound velocity Pressure Temperature Battery Density Salinity
mm/dd/yy hh:mm:ss.ss m/s dbar C volts kg/m
3
ppt

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Default example outputs
Power-up header
Minos SVP Version 4.01 SN:3497
AML Oceanographic
968.5 MBytes installed
>
Scan output
04/30/08 12:38:32.34 1475.247 0000.92 17.706 008.00 0998.768 00.096
>
Monitor output
04/30/08 12:39:26.98 1475.293 0001.12 17.709 008.00 0998.798 00.124
04/30/08 12:39:27.07 1475.292 0000.78 17.709 008.00 0998.785 00.127
04/30/08 12:39:27.17 1475.297 0000.78 17.709 008.00 0998.789 00.133
04/30/08 12:39:27.32 1475.284 0000.58 17.709 008.00 0998.773 00.123
04/30/08 12:39:27.42 1475.295 0000.78 17.709 008.00 0998.788 00.132
04/30/08 12:39:27.52 1475.297 0000.78 17.709 008.00 0998.788 00.132
04/30/08 12:39:27.62 1475.294 0000.58 17.709 008.00 0998.779 00.132
Display options output
[Instrument]
Type=Minos SVP
EmulationMode=disabled
SN=3497
Firmware=V3.15
SampleUnits=/ second
SampleInterval=10
PressureInc=0.00
SoundInc=0.00
TestLog=log1.raw
Date=04/30/08
Time=12:47:10
Memory%=1
DisplayTime=yes
DisplayDate=yes
DisplaySalinity=yes
DisplayDensity=yes
DisplayBattery=yes
RelayMode=auto detection
RealtimeLogging=yes
LoggingTimeout=0
StartupDelay=10
DisplayHeader=yes
StartupMode=prompt
CharacterReception=yes
LoggingBreakMode=no
DetectionMode=A4
BatteryACoefficient=+3.500000E+00
BatteryBCoefficient=+2.500000E-01
ShutDownVoltage=8.0
PressureOffset=0.00
SoundVelocityThreshold=1400.00
DelimterMode=Space
SensorDetectionMode=Once
[Slot 1]
SensorName=SV.X Sensor SN 134754 04/16/08
BoardSN=32414
[Slot 3]
SensorName=Micro P&T
BoardSN=08129
SensorSN1=000612

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CalDate1=11/14/07
CalBy1=MD
CalRange1=500 dbar
CalAccuracy1=0.043 pfs
SensorSN2=125238
CalDate2=10/26/07
CalBy2=JR
CalRange2=-2 to 32C
CalAccuracy2=0.0006C
>
Directory output
test .raw 503 04/25/08 16:45:29.00
SVP .TXT 2199239 04/26/08 15:23:47.00
log1 .raw 1950 04/30/08 12:41:46.00
957 MBytes free
11 MBytes Used
3 File(s) listed
Dump Log file
04/30/08 12:41:46.76 1475.450 0001.07 17.759 008.00 0998.782 00.118
04/30/08 12:41:46.80 1475.445 0000.70 17.760 008.00 0998.765 00.119
04/30/08 12:41:46.90 1475.456 0000.70 17.760 008.00 0998.773 00.129
New Cast
04/30/08 12:41:47.10 1475.453 0000.70 17.759 008.00 0998.773 00.128
04/30/08 12:41:47.19 1475.459 0000.70 17.759 008.00 0998.776 00.133
>

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Customer Support
Troubleshooting
Instrument fails to communicate:
•Check the cables
oIs the data power cable connected to the instrument and computer?
oIf using a cable other than an AML cable, it should be configured as a null modem
cable
oIf using multiple cable lengths, the extensions should not be configured as null
modem cables
oAre there any cuts in the cable?
•Are the batteries dead? Try using external power
•If using external power over a long cable, check the voltage drop over the cable. Measure
the voltage across a ½ watt, 100Ω, resistor across pins 1 and 4 of the cable. The voltage
must be above 6.5 volts.
•Are the communication settings in the program used on the computer correct?
oComm port selection
o8 bits
o1 stop bit
oNo parity
oNo hardware handshaking
oBaud rate between 2400 and 38,400 baud
•Are the communication settings in the instrument correct?
oWas the instrument specifically set to one baud rate last time? If so, the user must
use that baud rate to resume communications
oWas the instrument set to only RS-232 or only RS-485 last time? If so, the user
must resume communications in the required protocol
oWas the instrument set to RX OFF last time? If so, a carriage return must be sent
to the instrument immediately after power is applied to interrupt this mode
oWas the instrument set to monitor on power up mode? If so, a carriage return
must be sent to the instrument immediately after power is applied to interrupt this
mode
•Is the connector damaged?
Instrument fails to log:
•Was the LED light not flashing green when the sensors were immersed in water?
oGreen (solid): CHARGED and READY
oGreen (flashing): CHARGED and LOGGING
oRed (solid): LOW BATTERY
oRed (flashing): LOW BATTERY and LOGGING
•Allow one sample period for the instrument to detect that it is immersed
•Was the red shorting plug firmly seated in the instrument?

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•Are the batteries dead (LED light does not illuminate when shorting plug is installed)?
•Were the sound velocity increment, pressure increment and/or sample rate settings set to
values preventing logging?
•Was the log file name set correctly?
•Is the connector damaged?
Instrument generates noisy data:
•Is the connector damaged?
•If connected to external power, is there noise on the power supply? Switching power
supplies are common sources of noise.
•Nearby EMI sources such as electric motors can create noise. If possible move the
instrument and it’s cables away from the noise source.
•Are there bubbles on the SV sensor?
•Is the SV sensor clean?
•Is the bladder on the pressure sensor damaged?
•Is the temperature sensor damaged?
•Is there something nearby affecting the water temperature?

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AML Oceanographic Contact Info
Service:
To request an RMA or technical support
Email: [e-mail]
Phone: [phone]
Fax: [phone]
Sales:
For all general sales inquiries
Email: [e-mail]
Phone: [phone]
Fax: [phone]
Website:
http://www.AMLoceanographic.com
Customer Portal:
The Customer Portal allows AML Oceanographic customers to download calibration certificates
and other related instrument documentation, view instrument details and diagnostic reports. It also
allows AML Oceanographic customers to gather technical documentation, troubleshooting guides
etc. RMA requests or technical support queries may also be submitted through the portal
For access to the Customer Portal, please click on the Client Service & Support button, located on
the left hand side of the AML Oceanographic home page.
Alternatively, the direct web login address is:
https://na3.salesforce.com/secur/login_portal.jsp?orgId=00D3000000007DR&portalId=06050000000D0Vj
Mailing and Shipping Address:
AML Oceanographic.
2071 Malaview Ave.
Sidney, BC, Canada
V8L 5X6