Geosignal XV 100 User manual

Geosignal ™
Datalogger XV 100 USB
Version 1.0.4
User Manual

Table of Contents
INTRODUCTION...............................................................................................3
GETTING STARTED.........................................................................................4
MEMORY STRUCTURE....................................................................................7
CALI RATION..................................................................................................9
TROU LESHOOTING....................................................................................10
TECHNICAL SPECIFICATIONS.....................................................................11
APPENDIX.......................................................................................................12
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
2

Introduction
Thank you for purchasing a ata logger XV 100 USB (thumb rive stan ar alone DC voltage
ata logger).
XV 100 is a single channel stan alone voltage ata logger storing up to 37435 measures on its
internal memory, it is implemente as generic USB isks an is esigne to operate un er any
computer operating system capable of rea ing stan ar USB flash rives (pen rives).
Some of the features XV 100 are:
•One analog channel with 10 bit resolution.
•Seven programmable voltage ranges form 0-1V to 0-100V
•Double calibration for maximum precision.
•Multiple starts with separate timestamps for each sampling section.
•Text file output compatible with common software like Open Office an Excel.
•Memory erasing protecte by passwor .
•Programmable sampling interval from one secon to one week.
•3V CR2032 lithium battery (not inclu e ),
XV 100 oes not nee any specific software for ata ownloa ing an programming, as
programming is one by e iting a text file “CONTROL.TXT” which is foun on the isk itself.
Data is save on a rea only file name “DATALOGS.CSV”
The ata logger will start to scan at the given time with the given scan rate after being etache
from the USB socket.
Safety Precautions
Although this voltage ata logger can measure DC voltages up to 100V it must not be use with
any voltage greater than 48V as it not insulate an contact with such voltages may cause
electric shock an eath.
The case of this logger is connecte to the 3V battery negative which is electrically separate
from the negative black lea . If the case of the logger comes in contact with any part of the
measuring circuit, an incorrect measurement may result an the battery may be ischarge
faster than usual.
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
3

Getting Started
Initialising
•Make sure a battery has been inserte in the rear slot of the ata logger (battery must
be purchase separately as it is not inclu e with the ata logger).
•The ata logger is passwor protecte an nee s to be initialise before use, each ata
logger has a ifferent passwor (co e) which is require for erasing an initialising.
•Please keep the co e in a safe place as it is always require for erasing the memory.
•Connect the ata logger to a USB socket of a USB host enable evice (PC, tablet, etc).
•The ata logger will appear like a USB isk storing two files: CONTROL.TXT an
DATALOGS.CSV. Open the file CONTROL.TXT with a simple text e itor. If your system
oes not have a native text e itor please install one before using the ata logger. We
have teste Notepa on Win ows, Ge it on Ubuntu, an Te on An roi 4.0; Users of
Intel base Macs shoul install a “Virtual Machine” running Win ows or Ubuntu images
to use the ata logger.
•The file CONTROL.TXT on a new XV 100 will appear as below:
GEOSIGNAL USB DATA LOGGER
SN:00000001
MEMORY: code?
DATE: 13Y/05M/22D Tu
TIME: 12H:00M:06S
S AN RATE: 00s
START TIME: 05M/22D 12H:00M:30S Tu
LO K: +000
VINPUT: 00.090V+010Vr
Edit values and save file to program them.
Do not change position and length of fields.
Detach and plug device to show actual programmed values.
Log starts at Start Time after device is detached from USB.
Scans: 00s 01s 10s 01m 10m 01h 01d 01w
lock +-sec per week
Vrange 1,2,5,10,20,50,100
Input code to unlock device.
(Note: Above colours are not shown on the file; they are only for clarity)
•Replace the line “MEMORY: co e?” with “MEMORY: xxxxx” where xxxxx is the 5 igit
co e specific to your ata logger. For example if your co e is 01234, type:
•“MEMORY: 01234”
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
4

•Save the file to activate the co e: the re LED of the ata logger will quickly flash for a
few secon s an the ata logger will restart. (The LED is locate on the right si e near
the USB plug).
•Close an reopen the file CONTROL.TXT. Now, if the co e was correct, it will rea :
“Memory: 00000” in icating that the memory is blank an the evice rea y.
Programming
•Each time the ata logger is plugge into a USB socket an CONTROL.TXT is rea by
the computer operating system: the ata logger rea s its memory, registers an input
an changes the information containe in CONTROL.TXT. Please NOTE: we have
foun that after the ata logger has been inserte into a USB socket, all the ifferent
operating systems (we have teste ) rea the file just ONCE.
•Please note that the logger is not USB powere , so battery is intensively use uring
USB connection. Do not forget to remove the logger from USB after programming.
•Open CONTROL.TXT an e it the scan rate, current time, an starting time; o not
change position an length of the fiel s; for example: “DATE: 13Y/01M/01D Tu” must
not be change in “DATE: 13Y/1M/1D Tu”
•Possible scan rates are: 01s 10s, 01m, 10m, 01h, 01 , 01w (00s means stop)
•Save the file, the ata logger LED will blink.
•If the ata logger LED i not blink the file was not really save but it is just temporarily
store in the computer cache. This behaviour epen s on the operating system.
Win ows an Ubuntu imme iately save the file but some other OS or ol er versions
may require you to unmount the evice or go through the process of “Safely remove the
evice”.
•Please also note that the ata logger internal time is programme into the ata logger in
the precise moment the re LED blinks.
•Detach the ata logger to start the acquisition.
• If the starting time is past or inconsistent the ata logger will correct the starting time
automatically.
•If you instea only wante to stop the ata logger then you shoul have programme the
scan rate as: “S AN RATE: 00s”
•At scan time the re le will blink for an instant.
Downloading Data
•Plug the ata logger into any USB socket of a computer.
•Scanning will stop an will be resume once the ata logger is etache .
•Copy the file DATALOGS.CSV from the isk rive to your computer an open it with a
text e itor, or Open Office, or Excel.
•Make sure the ata has been actually copie on your computer har isk before erasing
the ata logger memory.
Erasing memory
•Plug the ata logger into any USB socket of a computer.
•Do not try to erase the file DATALOGS.CSV as it will only be remove from the
computer cache, not from the memory of the ata logger.
•Open the file CONTROL.TXT with a text e itor,
•Replace the line “MEMORY: 37435” with “Memory: ERASExxxxx” where xxxxx is the 5
igit co e specific to your ata logger. For example if your co e is 01234, type:
“Memory: ERASE01234”
•Please note: The comman is case sensitive “ERASE” must be in capital letters.
•Save the file to activate the co e: the re LED of the ata logger will quickly flash for a
few secon s an the ata logger will restart.
•CLOSE an reopen the file CONTROL.TXT: Now, if the co e was correct, it will rea :
“Memory: 00000” in icating that the memory is blank an the evice rea y.
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
5

Replacing battery
•Please note that the logger is not USB powere , so battery is intensively use uring
USB connection. Please keep USB connection time to a minimum to exten battery life.
•Battery Life Expectancy: a new CR 3032 battery shoul allow the logger to recor the
full memory four times inclu ing short USB connections for programming an ownloa .
•Battery voltage is checke automatically by the ata logger when it is inserte into the
USB socket. If the battery is foun to be below 2.8V the message “LOW BATTERY!!” is
isplaye in the file CONTROL.TXT.
•Detach the ata logger from the USB socket.
•Make sure the ata logger is stoppe an it is not sampling in the next minutes.
•Remove the ol battery by inserting a metal pin into the small hole locate on the left
han si e of the logger, or pull the battery out by using a pair of thin tweezers.
•Wait one minute for the ata logger to reset an then insert a new battery into the ata
logger.
•Connect the ata logger to a computer an reprogram the ate an time.
Reset
•To properly reset the ata logger: Remove the battery an wait for at least 60 secon s
before reinserting the battery again: please wait longer if the ata logger has just been
etache from the USB socket.
•After that the file CONTROL.TXT of the ata logger will show that the current time has
been reset an nee s to be reprogramme . If not then re o the proce ure an wait
longer.
Read inputs in real time
•The ata logger rea s its input when it is plugge into the USB socket. The current value
is shown in CONTROL.TXT
Voltage Range and Quick Calibration
•The voltage range of the instrument can be change by e iting the line : “VINPUT:
00.000V+010Vr” of CONTROL.TXT, change the range an save the file.
For example: “VINPUT: 00.000V+020Vr” will change the range to 0-20V.
•Ranges available are 0-1V, 0-2V, 0-5V, 0-10V, 0-20V, 0-50V, 0-100V
•Use the smallest range possible for the voltage being monitore In or er to achieve the
best accuracy.
•Please note that the 0-1V range an the one secon scan rate cannot be selecte
together.
•Calibration an measurement units can be change by e iting CONTROL.TXT.
For example on XV 100 it is possible to a just the gain of the ata logger.
•If the logger is out of calibration (In this example the ata logger is in icating +4.950V at
the reference voltage of 5.0V ) this 1% error can be a juste by e iting an saving the
line “VINPUT: 00.000S+010Vr”. Change V with S (Scale) where “+010” means:
“a just the input of roughly about 1.0% in positive”. The six characters prece ing S
(00.000S) are require but can be any values for the purpose of calibrating the
instrument.
•The a justment can be up to +10% (+128S) or own to -10% (-127S).
•Please refer to the next chapter 'Calibration' for further etails.
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
6

Memory Structure
The memory of the ata logger is flash memory an structure in the clusters an sectors of a
generic etachable USB rive.
The maximum number of atapoints is 37435. Each start (when the ata logger is plugge into
USB an restarte , but the memory is not erase ) will re uce the memory capacity of about 75
atapoints as timestamps an calibration parameters takes some room as they nee to be
save on the ata logger internal flash memory.
The ata logger will appear as a isk storing two files: CONTROL.TXT an DATALOGS.CSV.
CONTROL.TXT is meant to control the ata logger an to show its current state, memory an
time.
DATALOGS.CSV contains the ata. If it is empty its length is zero.
CONTROL.TXT once opene with a text e itor like notepa will appear as follow:
GEOSIGNAL USB DATA LOGGER
SN:00000001
MEMORY: 00136
DATE: 13Y/01M/22D Tu
TIME: 12H:40M:48S
S AN RATE: 10s
START TIME: 01M/22D 12H:00M:30S Tu
LO K: +000
VINPUT: 00.080V+010Vr
Edit values and save file to program them.
Do not change position and length of fields.
Detach and plug device to show actual programmed values.
Log starts at Start Time after device is detached from USB.
Scans: 00s 01s 10s 01m 10m 01h 01d 01w
lock +-sec per week
Vrange 1,2,5,10,20,50,100
To erase: MEMORY: ERASE+code
(Note: Above colours are not shown on the file; they are only for clarification)
This file is create when the ata logger is plugge into the USB socket an the operating
system of the computer or tablet or host evice rea s the contents of the file.
It important to un erstan that the file is not necessarily create when the file is opene by you.
When e iting this file it is extremely important not to change the position an length of the fiel s
as the ata logger will refuse to program itself if ata is foun in the wrong position.
Also take in account that the parameters type into the file that you are e iting with the computer
are transferre to the ata logger only when the computer eci es to. Normally this happens
when you 'Save' with the text e itor, but some operating systems require you to unmount the
ata logger (UNIX comman ) or to go through the process of 'Safely remove the rive' before
the ata is actually programme into the ata logger.
The ata logger features a re LED to inform you that ata has been actually store on its
memory by the Computer operating system.
The ata logger will also restart when an important ata change like erasing or calibration has
been performe , these changes have priority over ate, time, starting time an scan rate which
are not programme when a restart is processe .
When a restart occours the ata logger etaches an reattaches itself to the USB. the evice will
up ate its local instance of the file CONTROL.TXT an you nee to close an reopen the file to
see the changes an to e it the file again.
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
7

CONTROL.TXT shows:
SN:00000001 (Serial number which is unique for each ata logger)
MEMORY: 00136 (Memory use : store atapoints) it can also be use to erase the memory.
DATE: 13Y/01M/22D Tu (Current Date in reverse or er Year/Month/Day)
TIME: 12H:40M:48S (Current Time actually when the ata logger was inserte into USB)
S AN RATE: 10s (Current Scan rate which can be: 00s, stoppe ; 01s, one secon ; 10s,
ten secon s; 01m, one minute; 10m, ten minutes; 01h, one hour; 01d, one ay; 01w,
one week).
START TIME: 01M/22D 12H:00M:30S Tu
in ecreasing importance or er: Month/Day Hour:Minute:Secon Week ay.
The week ay is necessary only when using a weekly scan rate.
LO K: +000 in icate the clock calibration in + or – secon s per week an can be change to
a just the internal clock if it is running fast or slow.
VINPUT: 00.496V+010Vr in icates the current rea ing an range (0-10V)
The possible options are:
VINPUT: 00.000V+001Vr set Range (with 7 ranges available) 001->0-1V
VINPUT: 00.000V+002Vr set Range 0-2V
VINPUT: 00.000V+005Vr set Range 0-5V
VINPUT: 00.000V+010Vr set Range 0-10V
VINPUT: 00.000V+020Vr set Range 0-20V
VINPUT: 00.000V+050Vr set Range 0-50V (max voltage 48VDC)
VINPUT: 000.00V+100Vr set Range 0-100V (max voltage 48VDC)
The efault range for a new ata logger is ( 010 ) 0+10V
WARNING: do no connect the logger to voltages greater than 48V as it is not insulated
and that may electrocute you
00.000O+010Vr (O for offset) compensates “zero calibration” by a ing 10 millivolt x range to
measures; for example: if the range is 10V this will a 10mV x 10 = 100mV.
VINPUT: 000.00S+001Vr sets the “scale calibration”: a input x “scale calibration” x
0.00085 (basically this allows you to increase of ecrease the gain on the input up to +10%
(00.000S+127Vr) or own to -10% (00.000S-128Vr) in or er to compensate for any gain
errors. Please see the chapter Calibration for further etails.
Data File Structure
The store ata is accessible by opening a text file in csv format (comma separate values).
Formerly: comma separate vector.
The format of the file can be as following:
2013/05/06,16:02:50,03.000,V
2013/05/06,16:02:51,03.000,V
-----------------------------------------
-----------------------------------------
2013/05/06,16:05:00,03.000,V
2013/05/06,16:05:01,03.001,V
-----------------------------------------
The ate is in reverse or er: year/month/ ay.
Time is in 24h format (0-23).
The voltage atum takes a 6 character fiel .
The last fiel marks the measurement units, V (Volt) in this case.
All fiel s are separate by a comma an the perio marks the ecimal point.
If the logger is use in a country where comma is use for the ecimal point please a just the
file import options of the software you are using.
The format of ate an time can be change after importing.
The ashe lines in icates that the logger was stoppe an later restarte .
When a restart occurs some sectors of the isk are use to store the restart information an
ashes are printe in the ata file to show that.
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
8

Calibration
The ata logger allows calibration for the voltage input an a 'secon s per week' calibration of
the internal quartz clock.
Calibration is one by e iting an saving the parameters VINPUT or CLOCK of the file
CONTROL.TXT
LO K: +012 for example will a approx 12 secon s per week on a slow clock, it is possible
to a up to 127 secon s or to etract -128.
XV 100 will show an can be programme with the following:
VINPUT: 00.000O+010Vr compensate zero by a ing 10 millivolt x range to measures.
VINPUT: 00.000V+001Vr set Range (7 ranges available) 001->0-1V
VINPUT: 00.000V+002Vr set Range 0-2V
VINPUT: 00.000V+005Vr set Range 0-5V
VINPUT: 00.000V+010Vr set Range 0-10V
VINPUT: 00.000V+020Vr set Range 0-20V
VINPUT: 00.000V+050Vr set Range 0-50V
VINPUT: 000.00V+100Vr set Range 0-100V
VINPUT: 00.000S+001Vr set the scale calibration: a (voltage input) x scale (001) x
0.0085 (basically this allows you to increase of ecrease the gain on the sensor up to +10%
(000.00S+127)or own to -10% (000.00S-128) in or er to compensate for any gain errors.
The “zero offset calibration” can be use in particular situations like compensating for a
sensor not outputting zero volt at rest.
If the value recor e by the ata logger iffers by some millivolt from the expecte value then
correct this value by up ating the VINPUT: 00.000O+000Vr line accor ingly.
For example if the range is 0-1V: VINPUT: 00.000O+008Vr will a 0.008V to any
measurements. If instea the range is 0-10V that will a 0.080V.
The “scale calibration” constant can be mo ifie as escribe below.
The ifference between the rea ings can be compensate by increasing or ecreasing the gain
of 0.00085 multiplie by the scale calibration value.
The value of 0.00085 has been chosen to allow an a justment of +-10% within the range of ±
127 scale-calibration units.
The instrument hol s two separate scale calibration constants: low voltage, high voltage.
Calibrate the instrument twice: first with a range of 0-5V then change range to 0-50V an repeat
the operation.
Example:
A 0-10V 10 bar pressure sensor is connecte to the ata logger:
the ata logger shows 00.050V at zero bar
set VINPUT: 00.000O-050 an save the file.
After that the ata logger shows 09.900V at 10Bar pressure.
1-(9.9/10) = 0.01
0.01/0.00085 = 11.76 → approx 12 scale calibration units
set VINPUT: 00.000S+012 an save the file.
At this point the zero calibration may have change an the new value nee s to be recalculate :
0.030V times 0.00085 times 12 = 0.000306V
the value is below the sensitivity of the instrument an can be ignore .
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
9

Troubleshooting
Datalogger oes not connect to PC
•Battery flat: Replace battery
•Perform a reset: please try a few times.
Inconsistent ate an time
•Reprogram ate an time unplug an re-plug the ata logger.
•Perform a reset: please try a few times.
Datalogger oes not program scan rate or ate an time:
•After saving CONTROL.TXT make sure evice is unmounte or “Safely remove ”
Datalogger is connecte but an error is pro uce when ownloa ing ata file:
•Erase memory
Measures ownloa e are inconsistent:
•Change the operating range to one more appropriate.
Datalogger oes not store ata:
•Scan rate was not programme or mistake in setting the starting ate an time. Always
check twice for the correct start time before saving CONTROL.TXT.
•Out of Memory: Erase memory
Geosignal XV 100 USB Data Logger
Copyright 2013 all rights reserved.
www.geosignal. om.au
10