Verif-i Ltd Seismic QC Consultancy

From version 2.03a to version 2.03d

Added Functionality
Concatenate traces - if output file is same as input file record number is incremented
Multiple file convert - entering *.* displays all file types
Vib analysis: extend window for frequency calculation to 1024 samples
Multiple file convert - SEG-Y: allow user to modify parameters before converting 1st record
Concatenate traces - if output file is same as input file record number is incremented
CMRR, Crossfeed, Gain: frequency domain amplitude analysis changed to include v.low frequencies

Bugs fixed
Multiple file convert - suppress "Not SEG-D" error message when instrument is System Four
Simple vib sim - Chain mode - plot scaling automated if no specific scale values entered
Chain tests - parameters for Sercel Gain and Phase test unscrambled
Camera - plots now rescale correctly when parameters are changed
Omitting channelsets when decoding data now works correctly
Vib analysis: calculate time of window slice to middle of window before truncation
Vib analysis: extend window for frequency calculation to 1024 samples
Cancelling out of concatenate or copy data no longer gives file error
Vib Start Time - Scaling for X axis of Frequency plot corrected

Cosmetic Changes
Advanced vib sim - force sensitivity given extra precision
Advanced Vib Sim - plots made shorter to print on one page
Gain analysis saved results now indicates time or freq domain analysis
Insert "active tab and module" for Chain Tests

From version 2.02a to version 2.03a

Added Functionality
Resample data module included
Advanced Vib Similarity module added allowing force calculation and fixed plot axes
File sizes greater than 2 GB can now be used
Gain module now has gain Accuracy and Similarity as options
Camera has Separate and Superimpose traces as options
SMT-200 calculates % failure rate, displays temp correction type and tests run
SMT-300 and SGT geophone tester data now supported
Print options allow suppression of HTML files
Chain Tests can output all graphical data to a single unique folder or printer
Multiple file convert now supports selection of channel sets to decode
Convert data allows user to omit edited (eg. muted) traces from conversion
Multiple file convert allows user to select file types to display
Plot Spread module added
System 4 extended header implemented
Implement separate "Instrument" control for chained tests

Bugs fixed
Camera module now works correctly with sample intervals other than 2 ms
Crossfeed driving amplitude is now calculated as the median of the highest amplitude channels
Observers Log 32 second record length restriction removed
Sercel 408 gain test bandwidth is now calculated correctly for sample intervals other than 2 ms
Read Tape error trap for Max Block Size = 0
Distortion and CMRR processes 1 file if number of files to process is set to 0
Frequency Meter save results now works
Concatenate module closes if non-vfi file selected
Concatenate module multiple EOF errors suppressed
CMRR & Distortion - error trap if 0 records selected for analysis (defaults to 1)

Cosmetic Changes
Saved noise and distortion results "average" changed to "median"
Saved vibrator similarity results resolution increased
Vibrator identification in chained tests can be entered in the parameters
Sercel 408 phase results failures are now correctly labelled "microseconds"
Distortion saved results specification now labelled "dB" where appropriate
Distortion & Gain resolution of entered signal level increased Vibrator intensity plot data is padded with zeros to give data nearer the start and end of the sweep
Vibrator intensity plot data is now normalised to the maximum amplitude in the whole sweep rather than per slice
Vib analysis uses "total" distortion calculations
Vib analysis total, odd, even and sub-harmonic distortion are plotted
Includes letter in version number printed on all results

From version 2.02 to version 2.02a

Added Functionality
Detect if last channel in record is exceeded for vib processing mopdules
Read sample rate from SEG-2 ascii header during decoding
SMT-200 - Line number displayed if specifications are changed
Convert Data - instrument type can be selected after module is launched
Time domain pulse - add user selected 0 dB frequency (useful for highline pickup)
ARAM SEG-D Extended header - Header change for version 2.606 accommodated

Bugs fixed
Convert - instrument type now correctly carried through to decode module
SMT-200 - when reading SMT .PRN file ignore regional settings that replace decimal point with comma
Check Reference - Start taper for Blackman Law corrected
Check Reference Sweep - now works when sweep length set to 0 (automatic)
Results no longer printed twice in Chained Mode tests

Cosmetic Changes
408 pulse analysis remove redundant control causing wide plot
Multi-Vib - Colours on all plots now the same for each vib
Histogram plot scaling changed to exactly fill the X-axis
Histogram - first bar includes all results to -infinity, last bar includes all results to +infinity

From version 2.01 to version 2.02

Added Functionality
"Chain Tests" module modified to allow more processing options and list of failures
New "Vibrator Reference" module to verify sweep parameters
New "Filter" module applies user selected Butterworth filter to trace data
New "Plot Trace Header Value" plots the value of a trace header parameter
SEG-Y file size calculated using trace headers when binary header values are not filled in
Support for I/O System Four, allows decoding of module serial numbers

Bugs fixed
Converted or copied files are given the same file extension as the source file
Frequency domain crossfeed frequencies now more accurate
Vibrator similarity reference trace number now saved in default file
Sort traces copies correct number of channels when channel 1 is included
Histogram display now works correctly for data sets with very small standard deviations

Cosmetic Changes
Vib similarity data trace X axis now correctly set at Y=0
EBCDIC card number now displayed with SEG-Y headers
No. harmonics for crossfeed test control removed - only fundamental frequency is used

From version 2.00a to version 2.01

Added Functionality
New "Chain Tests" module added to allow batch processing of tests
New "Frequency Meter" module to accurately measure frequency
Calculated average values now use Median instead of Mean value
Millivolt values added to cursor position on Camera module
Failures screens now show a maximum of 50 errors (selected using scroll bar)
Sort Traces module allows blocks of traces to be selected
Least-squares best fit line now available on expanded Phase plot in Time and Frequency module
Control buttons replaced with company logo on printed results
I/O Image system extended header display updated
I/O System Two descale multipliers for auxiliary channels displayed in dB
ARAM SEG-D data converted from Volts to milliviolts during conversion
Enable Summary and Failures plots for single crossfeed files
Help given when SCSI tape drive not found

Bugs fixed
Date and time for FMR and SEG-1 files now carried through to Testif-i format
Non-binary sample intervals can now be accommodated (e.g. 200 us for SEG-1 files)
Field unit serial number now set to 0 if none available in input data
Decode multiple files ignores zero size input files
Decode multiple SEG-D files Logical File NUmber now increments correctly

Cosmetic Changes
Control buttons replaced with company logo on printed results
Y-axis for logarithmic Plot Trace graphs now correctly labelled in dB
No channel ID for CMRR multiple file failures

From version 2 to version 2.00a

Added Functionality
Dongle status updated more frequently
Amplitude of input signal in mV added to gain similarity statistics
SEG-Y data with sub-ms sample intervals can now be decoded
Tape read stops after output file reaches 2GB
Large scale Phase or Amplitude plot option added to Time & Frequency plot

Bugs fixed
Read Hex Data hot keys implemented
Frequency domain noise calculation start and end frequencies now calculated correctly
RMS amplitudes on gain and distortion calculated after offset removal
Frequency domain pulse display X-axix now correctly scaled for non-zero start of analysis
8036 format negative numbers now correctly decoded
Pre-amp gains for Sercel 388 and 408 now correctly interpreted for mixed gain settings

Cosmetic Changes
CMRR saved results header corrected
Distortion summary plot scaled inverted for distortion in dB
Resolution of cursor display for Plot Traces increased
Column headers wrong in "Select SED-D Channelsets" display
SMT-200 distortion display uses all input values

From version 1.12f to version 2

Added Functionality
Values of all controls now saved when exiting modules
Histogram option for all plots of results - useful for large numbers of channels
Auto installation of USB and parallel port drivers for NT based systems
Data from Sercel VQC 88 can be decoded
Distortion specification can be in percent or decibels
SEG-Y uses trace length from binary header if it is not recorded in the trace header
Receiver Pulse test can process different receiver types separately
Box numbers are decoded for Aram
Line and station numbers saved with all saved results
Phase plot added to Time and Frequency module
32 bit 2's complement added to options for SEG-Y conversion

Bugs fixed
Vibrator ID is now carried through to statistics page properly for Vibrator Similarity module
Standard Deviation calculations now use sample rather than complete population formula
Save data - cancelling out of "replace file?" when selecting existing file executes anyway
Camera trace=0 gives problems
Cancelling out of selecting a new default file crashes Testif-i (should keep old default file)
ESC hot key for extended header
Distortion histogram scaled correctly
Hot keys "Esc" for exit and "F9" for print for all extended headers
Plot Trace, Read Hex and Sum correctly close files when module closed

Cosmetic Changes
Concatenate data front panel removed (redundant)
388 extended header remove SU type for data channels (no longer supported)
No channel ID for cmrr multiple file failures

From version 1.12e to version 1.12f

Added Functionallity
User can annotate plot numbers for Multi-Vib analysis
Add time domain analysis option to Gain Similarity module
Linear or minimum phase filter type for SN388 #1 displayed in Extended Header module
Add frequency domain option to Receiver Pulse Test

Bugs fixed
Vib Sim - Metric units should be daN not N
Read hex data - trace length was reported wrongly for data from Sercel instruments
Camera - when trace overlap is on trace numbering was incorrect
Wild point editing is now applied to filter cut-off points in frequency Domain Pulse analysis
DC offset is removed from Time Domain Pulse prior to analysis
Multi file convert - if no 1st file selected module should exit

Cosmetic Changes
Dongle - remove dongle error message after "Use test data?" dialogue
DRD - window can now be resized by user
DRD - window now given a tab on the Taskbar
DRD - start time was not reflected on X axis of plot (always 0)
Camera - not centred in window
Vib Sim - table description added to help
Noise - help comments inserted for start and end frequencies
Time Domain pulse plot display now centred on pulse
Plot trace - suppress 2nd plot and cursor if "Overlay" is in use
Number of failures displayed limited to 500
Frequency Domain Pulse 3D Phase plot now printed along with other windows
SEG-Y obs log executes using defaults from SEG-Y decode module
Time & Frequency plot now centred in window
Time & Frequency - "window type" now displays all options when highlighted
Decode data X axis now correctly labelled "sample" not "ms"
Plot trace - Y axis of top plot too big



		From version 2.03a to version 2.03d From version 2.02a to version 2.03a From version 2.02 to version 2.02a From version 2.01 to version 2.02 From version 2.00a to version 2.01 From version 2 to version 2.00a From version 1.12f to version 2 From version 1.12e to version 1.12f
		From version 2.03a to version 2.03d Added Functionality Concatenate traces - if output file is same as input file record number is incremented Multiple file convert - entering . displays all file types Vib analysis: extend window for frequency calculation to 1024 samples Multiple file convert - SEG-Y: allow user to modify parameters before converting 1st record Concatenate traces - if output file is same as input file record number is incremented CMRR, Crossfeed, Gain: frequency domain amplitude analysis changed to include v.low frequencies Bugs fixed Multiple file convert - suppress "Not SEG-D" error message when instrument is System Four Simple vib sim - Chain mode - plot scaling automated if no specific scale values entered Chain tests - parameters for Sercel Gain and Phase test unscrambled Camera - plots now rescale correctly when parameters are changed Omitting channelsets when decoding data now works correctly Vib analysis: calculate time of window slice to middle of window before truncation Vib analysis: extend window for frequency calculation to 1024 samples Cancelling out of concatenate or copy data no longer gives file error Vib Start Time - Scaling for X axis of Frequency plot corrected Cosmetic Changes Advanced vib sim - force sensitivity given extra precision Advanced Vib Sim - plots made shorter to print on one page Gain analysis saved results now indicates time or freq domain analysis Insert "active tab and module" for Chain Tests From version 2.02a to version 2.03a Added Functionality Resample data module included Advanced Vib Similarity module added allowing force calculation and fixed plot axes File sizes greater than 2 GB can now be used Gain module now has gain Accuracy and Similarity as options Camera has Separate and Superimpose traces as options SMT-200 calculates % failure rate, displays temp correction type and tests run SMT-300 and SGT geophone tester data now supported Print options allow suppression of HTML files Chain Tests can output all graphical data to a single unique folder or printer Multiple file convert now supports selection of channel sets to decode Convert data allows user to omit edited (eg. muted) traces from conversion Multiple file convert allows user to select file types to display Plot Spread module added System 4 extended header implemented Implement separate "Instrument" control for chained tests Bugs fixed Camera module now works correctly with sample intervals other than 2 ms Crossfeed driving amplitude is now calculated as the median of the highest amplitude channels Observers Log 32 second record length restriction removed Sercel 408 gain test bandwidth is now calculated correctly for sample intervals other than 2 ms Read Tape error trap for Max Block Size = 0 Distortion and CMRR processes 1 file if number of files to process is set to 0 Frequency Meter save results now works Concatenate module closes if non-vfi file selected Concatenate module multiple EOF errors suppressed CMRR & Distortion - error trap if 0 records selected for analysis (defaults to 1) Cosmetic Changes Saved noise and distortion results "average" changed to "median" Saved vibrator similarity results resolution increased Vibrator identification in chained tests can be entered in the parameters Sercel 408 phase results failures are now correctly labelled "microseconds" Distortion saved results specification now labelled "dB" where appropriate Distortion & Gain resolution of entered signal level increased Vibrator intensity plot data is padded with zeros to give data nearer the start and end of the sweep Vibrator intensity plot data is now normalised to the maximum amplitude in the whole sweep rather than per slice Vib analysis uses "total" distortion calculations Vib analysis total, odd, even and sub-harmonic distortion are plotted Includes letter in version number printed on all results From version 2.02 to version 2.02a Added Functionality Detect if last channel in record is exceeded for vib processing mopdules Read sample rate from SEG-2 ascii header during decoding SMT-200 - Line number displayed if specifications are changed Convert Data - instrument type can be selected after module is launched Time domain pulse - add user selected 0 dB frequency (useful for highline pickup) ARAM SEG-D Extended header - Header change for version 2.606 accommodated Bugs fixed Convert - instrument type now correctly carried through to decode module SMT-200 - when reading SMT .PRN file ignore regional settings that replace decimal point with comma Check Reference - Start taper for Blackman Law corrected Check Reference Sweep - now works when sweep length set to 0 (automatic) Results no longer printed twice in Chained Mode tests Cosmetic Changes 408 pulse analysis remove redundant control causing wide plot Multi-Vib - Colours on all plots now the same for each vib Histogram plot scaling changed to exactly fill the X-axis Histogram - first bar includes all results to -infinity, last bar includes all results to +infinity From version 2.01 to version 2.02 Added Functionality "Chain Tests" module modified to allow more processing options and list of failures New "Vibrator Reference" module to verify sweep parameters New "Filter" module applies user selected Butterworth filter to trace data New "Plot Trace Header Value" plots the value of a trace header parameter SEG-Y file size calculated using trace headers when binary header values are not filled in Support for I/O System Four, allows decoding of module serial numbers Bugs fixed Converted or copied files are given the same file extension as the source file Frequency domain crossfeed frequencies now more accurate Vibrator similarity reference trace number now saved in default file Sort traces copies correct number of channels when channel 1 is included Histogram display now works correctly for data sets with very small standard deviations Cosmetic Changes Vib similarity data trace X axis now correctly set at Y=0 EBCDIC card number now displayed with SEG-Y headers No. harmonics for crossfeed test control removed - only fundamental frequency is used From version 2.00a to version 2.01 Added Functionality New "Chain Tests" module added to allow batch processing of tests New "Frequency Meter" module to accurately measure frequency Calculated average values now use Median instead of Mean value Millivolt values added to cursor position on Camera module Failures screens now show a maximum of 50 errors (selected using scroll bar) Sort Traces module allows blocks of traces to be selected Least-squares best fit line now available on expanded Phase plot in Time and Frequency module Control buttons replaced with company logo on printed results I/O Image system extended header display updated I/O System Two descale multipliers for auxiliary channels displayed in dB ARAM SEG-D data converted from Volts to milliviolts during conversion Enable Summary and Failures plots for single crossfeed files Help given when SCSI tape drive not found Bugs fixed Date and time for FMR and SEG-1 files now carried through to Testif-i format Non-binary sample intervals can now be accommodated (e.g. 200 us for SEG-1 files) Field unit serial number now set to 0 if none available in input data Decode multiple files ignores zero size input files Decode multiple SEG-D files Logical File NUmber now increments correctly Cosmetic Changes Control buttons replaced with company logo on printed results Y-axis for logarithmic Plot Trace graphs now correctly labelled in dB No channel ID for CMRR multiple file failures From version 2 to version 2.00a Added Functionality Dongle status updated more frequently Amplitude of input signal in mV added to gain similarity statistics SEG-Y data with sub-ms sample intervals can now be decoded Tape read stops after output file reaches 2GB Large scale Phase or Amplitude plot option added to Time & Frequency plot Bugs fixed Read Hex Data hot keys implemented Frequency domain noise calculation start and end frequencies now calculated correctly RMS amplitudes on gain and distortion calculated after offset removal Frequency domain pulse display X-axix now correctly scaled for non-zero start of analysis 8036 format negative numbers now correctly decoded Pre-amp gains for Sercel 388 and 408 now correctly interpreted for mixed gain settings Cosmetic Changes CMRR saved results header corrected Distortion summary plot scaled inverted for distortion in dB Resolution of cursor display for Plot Traces increased Column headers wrong in "Select SED-D Channelsets" display SMT-200 distortion display uses all input values From version 1.12f to version 2 Added Functionality Values of all controls now saved when exiting modules Histogram option for all plots of results - useful for large numbers of channels Auto installation of USB and parallel port drivers for NT based systems Data from Sercel VQC 88 can be decoded Distortion specification can be in percent or decibels SEG-Y uses trace length from binary header if it is not recorded in the trace header Receiver Pulse test can process different receiver types separately Box numbers are decoded for Aram Line and station numbers saved with all saved results Phase plot added to Time and Frequency module 32 bit 2's complement added to options for SEG-Y conversion Bugs fixed Vibrator ID is now carried through to statistics page properly for Vibrator Similarity module Standard Deviation calculations now use sample rather than complete population formula Save data - cancelling out of "replace file?" when selecting existing file executes anyway Camera trace=0 gives problems Cancelling out of selecting a new default file crashes Testif-i (should keep old default file) ESC hot key for extended header Distortion histogram scaled correctly Hot keys "Esc" for exit and "F9" for print for all extended headers Plot Trace, Read Hex and Sum correctly close files when module closed Cosmetic Changes Concatenate data front panel removed (redundant) 388 extended header remove SU type for data channels (no longer supported) No channel ID for cmrr multiple file failures From version 1.12e to version 1.12f Added Functionallity User can annotate plot numbers for Multi-Vib analysis Add time domain analysis option to Gain Similarity module Linear or minimum phase filter type for SN388 #1 displayed in Extended Header module Add frequency domain option to Receiver Pulse Test Bugs fixed Vib Sim - Metric units should be daN not N Read hex data - trace length was reported wrongly for data from Sercel instruments Camera - when trace overlap is on trace numbering was incorrect Wild point editing is now applied to filter cut-off points in frequency Domain Pulse analysis DC offset is removed from Time Domain Pulse prior to analysis Multi file convert - if no 1st file selected module should exit Cosmetic Changes Dongle - remove dongle error message after "Use test data?" dialogue DRD - window can now be resized by user DRD - window now given a tab on the Taskbar DRD - start time was not reflected on X axis of plot (always 0) Camera - not centred in window Vib Sim - table description added to help Noise - help comments inserted for start and end frequencies Time Domain pulse plot display now centred on pulse Plot trace - suppress 2nd plot and cursor if "Overlay" is in use Number of failures displayed limited to 500 Frequency Domain Pulse 3D Phase plot now printed along with other windows SEG-Y obs log executes using defaults from SEG-Y decode module Time & Frequency plot now centred in window Time & Frequency - "window type" now displays all options when highlighted Decode data X axis now correctly labelled "sample" not "ms" Plot trace - Y axis of top plot too big