This appendix deals with the two utilities supplied, RDUMP and GPRINT. In the case of a hard disc installation, the executable files RDUMP.EXE and GPRINT.EXE are stored in the program directory, but in the case of a floppy disc installation they will have to be separately copied from the distribution disc.
Charge decay graphs are stored as ?D######.##G files after viewing the graphs, in the same directory as the charge decay files. Running GPRINT from the command line will prompt the user for the full path name of the directory holding the required files. Then this directory is searched for the graph files, which are printed and then deleted. Alternatively the directory name can follow the GPRINT command as in this example, but note the terminating '\' character is needed:
Because of the amount of room (about 16kBytes) required by each graphics file, it is best to copy decay files on a floppy disc to a hard disc, using file management utilities described in Chapters 8 and 12, before viewing the graphs.
When printing the graphs to fanfold paper it will often be found that after the first few graphs, they begin to be printed across the tear lines. When this occurs, the printer needs a form feed code sequence between graphs. Look up the code(s) for form feed in the printer manual, and use the FEEDCODE utility (file FEEDCODE.BAT) to set the form feed code thus, where the code is the single number 12 (applies to majority of printers):
Up to 8 numbers with spaces may be used by FEEDCODE, and to cancel the code use FEEDCODE with no code numbers.
If this doesn't overcome the problem, check that the form feed length is correct. Codes to correct it can be inserted using FEEDCODE e.g:
C:>FEEDCODE 27 67 0 11 12
sets the form feed to 11 inches, then feeds a form for an Epson® FX compatible printer.
Individual Charge Decay Data Result files are partly in CSV format, which allows them to be dumped into spreadsheets directly (but see the spreadsheet commands which might be needed to load CSV files). The table below shows the results of such a dump.
|Sample identification: trial|
|Temperature (°C): 99.0|
|Relative humidity (%RH): 99.0|
|Peak (@ reading 11) (V): -379.06|
|Estimated time to 1/e of peak (at 25.81s) (s) = 32.03|
|Positive Threshold (V): +50.00|
|Negative Threshold (V): -50.00|
|Pre-event zero average (V): +0.916|
|Highgain (X10.000) pre-event zero average (V): +2.350|
|Avr: 1; Spk: 1|
|User start Vs (V): 100.00|
|User end %: 36.79|
|User start Vs (V): -100.00|
|User target Ve (V): -36.79|
|Relative humidity (%RH):||99.00|
|+ve Threshold V:||50.00|
|-ve Threshold V:||-50.00|
|Decay Start Volts:||-379.10||-379.10|
|Decay Start Index:||11.00||11.00|
|Time to Peak / e:||32.03||32.10|
|Prediction % pk:|
|Zero avge Volts:||0.92||0.00||(shift)|
|Time||Surface Volts||Time||Local TC||TC order|
|0.21||-339.80||0.21||2.64 < TD ALIGN=RIGHT>1|
Because of the amount of room (up to 5kBytes) required by each result file, it is best to copy decay files on a floppy disc to a hard disc, using file management utilities described in Chapters 8 and 12, before analysing the charge decay files.
Batches of Charge Decay data analysis results can be converted to spreadsheet ("CSV") format using the RDUMP utility. Only the summary data is dumped. Running RDUMP from the command line will prompt the user for the full path name of the directory holding the required files. Then this directory is searched for the result files, which are converted to CSV format and chained together in a file called rdump.csv, in the same directoryAlternatively the directory name can follow the RDUMP command as in this example, but note the terminating '\' character is needed:
The file rdump.csv can be imported into a spread sheet. The result of such an import is shown below:
|trial||99||99||Not found||Not found||-379.10||32.10||AD145427.07R|
|ny dul n25 1 wash||99||99||Not found||Not found||Not found||531.10||CD13423.06R|
|Dummy Identity String||99||99||Not found||Not found||-549.30||61.03||AD173125.10R|
|Dummy Identity String||99||99||Not found||Not found||-556.60||Not found||AD171325.10R|
|Dummy Identity String||99||99||Not found||Not found||1638.00||0.03||AD170925.10R|
|Dummy Identity String||99||99||Not found||Not found||202.50||847.40||AD164825.10R|
|Dummy Identity String||99||99||Not found||Not found||-787.20||2786.00||AD164325.10R|
|Dummy Identity String||99||99||Not found||Not found||3780.00||0.14||AD164225.10R|
|Dummy Identity String||99||99||Not found||Not found||2030.00||0.07||AD164125.10R|
|Dummy Identity String||99||99||Not found||Not found||1252.00||0.13||AD163625.10R|
|Dummy Identity String||99||99||Not found||Not found||272.40||0.62||BD163525.10R|
|Dummy Identity String||99||99||Not found||Not found||67.14||0.07||AD163525.10R|
|trial||99||99||Not found||Not found||-389.50||36.55||AD150227.07R|
|Dummy Identity String||99||99||8125||0.02||-233.70||28.52||AD151127.07R|
|Dummy Identity String||99||99||Not found||Not found||-982.10||110.20||AD171225.10R|
|Dummy Identity String||99||99||Not found||Not found||847.90||0.00||AD163925.10R|
Because of the amount of room required by an rdump.csv file, it is best to copy decay files on a floppy disc to a hard disc, using file management utilities described in Chapters 8 and 12, before dumping the charge decay result file data.