WebNIR

There are 2 ways to perform the procedure:

1. From the Chain from archive tab, specifying:
   • Manufacturer of the measurement chain (optional, if indicated filters the chains)
   • Measurement chain
   • Measurement mode
   • Chain settings
   For each selection the following fields are automatically populated, and selected if they contain only one entry.
   Selecting the Measurement mode populates the Conversion factor and Voltage offset, otherwise set by default to 1 and 0, respectively.
   Selecting Chain Settings:
   • the File Structure tab is populated.
   • a button is displayed that allows you to download the example text file corresponding to the chosen chain (2 buttons in the case of a calculation sheet: one for the file and a CSV corresponding to the sheet of interest), and a table with the values ​​formatted according to the specific settings;
2. Specifying the values ​​needed to interpret the files in the File Structure tab. Once this part of the procedure is completed, import the data in JSON by clicking on Import data in JSON (blue arrow pointing down).
   This mode is priority: the parameters present in the JSON text area are considered in the processing, and if manually modified the original settings relating to the previously selected measurement chain are lost.
   This sub-tab contains a text field and the buttons:
   • Import data in JSON (blue arrow pointing down) to import the parameters specified in the various fields in text format (according to the syntax of a JSON object);
   • Export data from JSON (blue arrow pointing up) to fill the fields starting from a JSON object present in the appropriate text field;
   If a measurement chain is not present in the archive, you can save the data relating to the formatting of its output file, and use them later without re-entering them. To verify the validity of what has been entered, once all the parameters have been specified and the files have been loaded, the test procedure in User Files can be used to display the first of the files loaded in table format according to the defined settings.

In the User Files tab, one or more files containing the measurement data must be loaded, with a homogeneous structure also with regard to the units of measurement and compatible with what has been entered in the File Structure tab.

If the file loaded by the user is not compatible with what is specified in File Structure, unexpected results or an error message may be obtained from the test and processing programs.

The files must be loaded in the order in which they are produced by the instrumentation. Immediately after the selection they appear in alphabetical order, but the user can position them appropriately by dragging the name to the desired position.

Finally, by clicking on Send data the control procedures are performed on the data entered by the user, the files are uploaded to the server (the progress status is displayed in the appropriate scroll bar) and are stored in an appropriate format on the server side.

At the end:

1. the 3 components of the induction in the time domain are present, and the data are passed to the actual processing part;
2. the data are not compatible with the processing procedures, and are displayed in the space below in tabular and graphic format.

The allowed units are those given by the combination of a prefix corresponding to an exponent multiple of 3 and the unit of the physical quantities of interest (as per table).

For vector quantities (B, H, E, J, S) the values ​​related to the projection along the axes are also allowed (E_x, E_y, E_z, B_x, ...).

Grandezza	E	H	B	B	DELTAB	DELTAB	S	J	SAR	SA	U	DBDT	DBDT	V	I	t	f	W
$${\Unita\`}/{\Prefisso}$$	V/m	A/m	T	G	T	G	W/m2	A/m2	W/kg	J/kg	J/m2	T/s	G/s	V	A	s	Hz	W
y	yV/m	yA/m	yT	yG	yT	yG	yW/m2	yA/m2	yW/kg	yJ/kg	yJ/m2	yT/s	yG/s	yV	yA	-	yHz	yW
z	zV/m	zA/m	zT	zG	zT	zG	zW/m2	zA/m2	zW/kg	zJ/kg	zJ/m2	zT/s	zG/s	zV	zA	-	zHz	zW
a	aV/m	aA/m	aT	aG	aT	aG	aW/m2	aA/m2	aW/kg	aJ/kg	aJ/m2	aT/s	aG/s	aV	aA	-	aHz	aW
f	fV/m	fA/m	fT	fG	fT	fG	fW/m2	fA/m2	fW/kg	fJ/kg	fJ/m2	fT/s	fG/s	fV	fA	-	fHz	fW
p	pV/m	pA/m	pT	pG	pT	pG	pW/m2	pA/m2	pW/kg	pJ/kg	pJ/m2	pT/s	pG/s	pV	pA	-	pHz	pW
n	nV/m	nA/m	nT	nG	nT	nG	nW/m2	nA/m2	nW/kg	nJ/kg	nJ/m2	nT/s	nG/s	nV	nA	ns	nHz	nW
µ	µV/m	µA/m	µT	µG	µT	µG	µW/m2	µA/m2	µW/kg	µJ/kg	µJ/m2	µT/s	µG/s	µV	µA	µs	µHz	µW
m	mV/m	mA/m	mT	mG	mT	mG	mW/m2	mA/m2	mW/kg	mJ/kg	mJ/m2	mT/s	mG/s	mV	mA	ms	mHz	mW
	V/m	A/m	T	G	T	G	W/m2	A/m2	W/kg	J/kg	J/m2	T/s	G/s	V	A	s	Hz	W
k	kV/m	kA/m	kT	kG	kT	kG	kW/m2	kA/m2	kW/kg	kJ/kg	kJ/m2	kT/s	kG/s	kV	kA	-	kHz	kW
M	MV/m	MA/m	MT	MG	MT	MG	MW/m2	MA/m2	MW/kg	MJ/kg	MJ/m2	MT/s	MG/s	MV	MA	-	MHz	MW
G	GV/m	GA/m	GT	GG	GT	GG	GW/m2	GA/m2	GW/kg	GJ/kg	GJ/m2	GT/s	GG/s	GV	GA	-	GHz	GW
T	TV/m	TA/m	TT	TG	TT	TG	TW/m2	TA/m2	TW/kg	TJ/kg	TJ/m2	TT/s	TG/s	TV	TA	-	THz	TW
P	PV/m	PA/m	PT	PG	PT	PG	PW/m2	PA/m2	PW/kg	PJ/kg	PJ/m2	PT/s	PG/s	PV	PA	-	PHz	PW
E	EV/m	EA/m	ET	EG	ET	EG	EW/m2	EA/m2	EW/kg	EJ/kg	EJ/m2	ET/s	EG/s	EV	EA	-	EHz	EW
Z	ZV/m	ZA/m	ZT	ZG	ZT	ZG	ZW/m2	ZA/m2	ZW/kg	ZJ/kg	ZJ/m2	ZT/s	ZG/s	ZV	ZA	-	ZHz	ZW
Y	YV/m	YA/m	YT	YG	YT	YG	YW/m2	YA/m2	YW/kg	YJ/kg	YJ/m2	YT/s	YG/s	YV	YA	-	YHz	YW

Time data can be expressed in the following formats:

1. numeric (in s, ms, μs or ns);
2. hexadecimal (in 0.01 s), from whose conversion to decimal format we can go back to the first case;
3. date/time, in which the possible representations of dates and times are given in the following tables and the data is represented as [DATE][T][TIME][Timezone]. The conversion to numeric format is done through the function strtotime; the decimal part is added later. For conventions used regarding time zones (MST, PDT, CEST...), see https://www.timeanddate.com/time/zones/. For example, the following values ​​are equivalent:
   • 19901028192030Z
   • 19901028 192030Z
   • 19901028T192030Z
   • 1990-10-28T19:20:30Z
   • Wed 1990-10-28T19:20:30Z (the name of the day of the week is neglected)
   as well as the following:
   • 19901028192030+7
   • 19901028192030+07
   • 19901028192030+0700
   • 19901028 192030+0700
   • 19901028T192030+0700
   • 1990-10-28T19:20:30+07:00
   • 1990-10-28T19:20:30GMT+07:00
   Some example conversions, where Z represents the UTC (Coordinated Universal Time) designator:
   • strtotime("1970/01/01 00:00:00") = -3600
   • strtotime("1970/01/01 00:00:00Z") = 0 (1 hour difference for time zone)
   • strtotime("00:00:00") = 1532642400 (implies today's date)
   • strtotime("00:00:00Z") = 1532649600 (2 hours difference, one for daylight saving time and one for the time zone)

Date related formats
General form	Example
dd-mmm-yy	28-OCT-90
dd-mmm-yyyy	28-OCT-1990
mm/dd/yy	10/28/90
mm/dd/yyyy	10/28/1990
dd.mm.yy	28.10.90
dd.mm.yyyy	28.10.1990
yyyyddd	1990301
yyyy.ddd	1990.301
yyyy/mm/dd	1990/10/28
yyyymmdd	19901028
mmm yyyy	OCT 1990
Nome del mese	OCT
yyyy-mm-dd	1990-10-28
yy-mm-dd	90-10-28
yyyy.mm.dd	2015.03.17
yy.mm.dd	15.03.17
mmm/dd/yyyy	Mar/16/2006
mmm/dd/yy	Mar/16/06
mm/dd/yy	2/1/6

Time related formats
General form	Example
hh:mm	01:42
hh:mm:ss	01:42:37
hh:mm:ss.s	01:42:37.3657454
hh:mm:ss [AM]	07:20:30 AM
hh:mm:ss [PM]	07:20:30 PM
hhmmss	192030
hhmmss.s	192030.2454
TZD (TimeZone Designator) related formats
+|-hh:mm	+01:00
+|-hhmm	+0100
+|-hh	+01
+|-hh	+1
Z	Z
...	MST (PDT, CEST...)

Selecting a chain operating in the frequency domain, if the measured quantity is one of:

• Electric Field
• Magnetic Flux Density
• Voltage
• Current
• Power

data can be compared with a homogeneous limit among those present in the documents:

• MSFC-SPEC-521: Electromagnetic compatibility requirements for equipment and susbsytems
• MIL-STD-461E: Requirements for the control of electromagnetic interference characteristics of subsystems and equipment
• ECSS-E-ST-20-07C: Space engineering - Electromagnetic compatibility

The measured quantity must be expressed in one of the units of measurement of the International System, not in dB. The appropriate conversions are carried out before the results are displayed.

Once the limit of interest has been selected, the frequency extremes are displayed in the fields:

• Minimum frequency
• Maximum frequency

These values ​​can be edited to narrow the range displayed in the output graph.

If it is necessary to use an upper limit of a constant value to the selected reference, the difference (expressed in dB) must be reported in the Modify limit field.

If the measured quantity represents a voltage, 2 additional boxes appear, in which to insert any corrections due to:

• Antenna factor: is activated by selecting Enable correction with antenna factor. The relevant data, expressed in Hz and dB/m, must be copied from 2 columns of a spreadsheet. The menu with the limits is automatically updated with the limits for the electric field. By deselecting the option, the voltage limits reappear.
• LISN: is activated by selecting Enable correction for LISN. The relevant data, expressed in Hz and dBµV, must be copied from 2 columns of a spreadsheet. The option is disabled if the correction for antenna factor is enabled.

By pressing Compare, a graph is created in which the trends of the selected limit and the data contained in the loaded file are reported. The warning window may appear for:

• No measurement result falls within the frequency interval of the selected limit: in this case, only the trend of the limit is represented in the graph.
• Total exceedances: # (number of exceedances)
  Download the exceeding.txt file: by clicking on exceeding.txt you download a text file locally that displays in 3 columns:
  • the frequency at which the limit is exceeded
  • the measured value, possibly obtained by linear interpolation between the measurements at a frequency lower and higher than the one considered
  • the limit calculated at that frequency value
• Total NON-exceedances: # (number of non-exceedances)
  Download the non-exceeding.txt file: as above