eMM..8010 SYSIE..M - SOFTWARE MANUAL (ReI. 5" To operate the system in a simple and user-frendly way, a menu-based software has been adopted. To allow the user to operate the system in different environments, a number of option have been provided to'run the PMM 8010 software: o 8010: normal program execution; o 8010/CGA: to configure a VGA/EGA monitor as eGA monitor; o 8010/U: program running without 8010 signal analyzer (i.e. for training) Once started the program, a main menu of 10 options is displayed on the screen. Options can be selected simply depressing the keypad letter corresponding to the different colour letter (red) of the option chosen (EGA/VGA color monitor) or the capitol letter (CGA b /w monitor). The selected option generally displays a window containing a number of commands, selectable as defined above or moving through the window by means of the UP/DOWN arrows and depressing ENTER key once the choice has been done. Some commands, while active, block the system until the function chosen is. terminated or the ESC key is depressed. In this case the letters in different color turn from red to blu. n 29 -
To operate the system in a simple and user-frendly way, a menu-based software has been adopted.
To allow the user to operate the system in different environments, a number of option have been provided to'run the PMM 8010 software:
o 8010: normal program execution;
o 8010/CGA: to configure a VGA/EGA monitor as eGA monitor;
o 8010/U: program running without 8010 signal analyzer (i.e. for training)
Once started the program, a main menu of 10 options is displayed on the screen. Options can be selected simply depressing the keypad letter corresponding to the different colour letter (red) of the option chosen (EGA/VGA color monitor) or the capitol letter (CGA b /w monitor).
The selected option generally displays a window containing a number of commands, selectable as defined above or moving through the window by means of the UP/DOWN arrows and depressing ENTER key once the choice has been done.
Some commands, while active, block the system until the function chosen is. terminated or the ESC key is depressed. In this case the letters in different color turn from red to blu.
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The main menu options are the following:
• FILE: file handling and exit to DOS
• SWEEP: performs automatic measurements
• SPECTRUM: operates the equipment as a Spectrum Analyzer
• MANUAL: operates the equipment in manual mode
• LIMIT: allows to load standard limits or to create new ones ,
• LlSN: defines and controls the system equipment, if any
• PRINT: generates printout and reports of the measurements
• TAB: Tables handling for special measurement session.
• AUTOCAL: starts the autocalibration procedure
• HELP: displays the on .. line help
A further menu is available and can be displayed entering the 1\ / " key. Within this menu it is possible to change the following system default values:
o increase the duration of a PEAK measure for each frequency from the defaul value of 100 ms up to 3000 ms and the duration of a Q-PEAK measure for each frequency from the defaul value of 1 s up to 30 s.
o change the holding time of the MAX HOLD bar of the manual mode from the default value of 3 s to indefinite time.
o define some plotter parame~ers as: 1 or 3 pen, connection port on COM 1 or COM2, figure rotation 0 or 90 degrees.
The syntax of these commands is the following:
o Peakdelay n (n from 100 to 3000)
o Qpeakdelay n (n from 1 to 30)
o TimeHold = ON / OFF (On indefinite time, OFF for 3 s. holding) .
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o PEN1/PEN3
o COM1/COM2
o ROO/R090
< default PEN 1 >
< default COM 1 >
< default ROO>
Before starting to examine in details, in the following sections, all commands, a short explanation of the way the system operates is given.
PMM 8010 is a computer operated measuring system for conducted intereferences and therefore a floppy clisk or hard disk, where all files generated running the software (measurements, limits, etc.) are stored, and a working volatile memory are available.
The volatile memory permits to store files temporarely, once a time.
In case a second file is loaded, this is displaied directly on the screen and is available to be compared with the previous stored one.
When the refresh command is issued, only the first file, loaded from the disk memory and allocated within the working memory, is displaied on the screen.
'n,e following figure represents a typical display of a measure realized by means of the PMM 8010 system.
The FILE menu contains all the commands required for the manipulation of measurement files and the command to leave the measuring session.
Access to the menu is through keyboard letter F; two windows containing all FILE commands are displayed on the screen:
Save Save
Load Show & Compare
Erase Erase
Unload Unload
Refresh screen Refresh screen
Dos shell Dos shell
Exit Exit
The first is displayed when the working memory is unloaded while the second is displayed if a measurement file has already been loaeled in the working memory.
1.1 SAVE
This command saves in a file the last "sweep" measure and all its parameters.
It is possible to add a line of text to save further informat;ons concerning the performed measure.
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1.2 (a) LOAD
Retrieves and loads a previously-stored graphic file, and displays it on the screen. Up and down arrows are used to select among all the stored files, within the measurement files d;rectory.
1.2 (b) SHOW & COMPARE
Allows to show on the screen a file, without loading it in the working memory.
If file measure parameters (start and stop frequency, frequency step) are equal to the parameters of the file loaded in the working memory, all the differences are automatically displayed within a dedicated screen window.
1.3 ERASE
Saved files can be deleted using this command. File selection is made by means of up and down arrows.
1.4 UNLOAD
Unloads all data currently stored in tile working memory.
1.5 REFRESH SCREEN
Refreshes the screen with the first stored graphic report, that is the file stored in the working memory.
1.6 DOS SHELL
Using this option it is possible to leave temporarely the measurement session and to access to DOS operating system and its commands. Typing "EXIT" from DOS, the control return to the measurements progmm.
1.7 EXIT
Quits measurement session and return to DOS.
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The SWEEP n'lenu permits the user to make an automatic measure, the resu!t of which will be displayed on the screen as a graphic chart in real time.
Before starting the measure, some parameters can be set using the following commands provided within this menu:
o Sweep Start
o Sweep Stop
o Freq. step
o Detector
o Demodulator
o Usn
o Minim.att.
o ZOOMS
o ZOOML
o GO (Go Through table)
o Worst case
2.1 SWEEP START
10 kHz
30.000 MHz
0.1/5 kHz
Peak
Off
L 1 (Probe - None)
10 dB
Defines sweep start frequency; default value is '10 kHz (10000 Hz). A different va!~0 . from 10 kHz to 30 MHZ, for example 10.5 MHz, can be entered typing enG of the following:
10500000 (value in Hz)
10500K (value in kHz)
10.5M (value in MHz)
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2.2 SWEEP STOP
Defines sweep stop frequency. Default value is 30 MHz; different values can be entered as stated above.
2.3 FREQ. STEP
Allows to define frequency stepping of adjacent samples.
The default values (0.1 / 5 kHz) are defined to make a measurement in accordance with CISPR requirements.
Other values can be useful to speed up measurements, when just a "survey" is desired. Entering a value from 5 kHz to 50 kHz, the frequency step referrig to CISPR B Band (150 kHz - 30 MHz) is set and CISPR A Band (10 kHZ - 150 kHz) step value is automatically adjusted.
2.4 DETECTOR
Selects the detector to be used during the measure among the following:
CISPR
PEAI(
PEAK + CISPR
AVERAGE
In this way it is possible to make the measurerements on PEAK (instantaneous), CISPR (quasi-peak) or AVERAGE (weighted) values.
PEAK + C1SPR option has been provided to speed up checks; in fact the software first runs a peak sweep and only at these frequencies where the peak values are really close, at least 3 dB lower, or above the chosen limit (VDE A or B, FCC-A ecc.), a CISPR detection is carried on.
PEAK + C1SPR option shall be used only after selecting or defining a limit.
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2.5 DEMODULATOR
Switches off or inserts AM / FM demodulator, to allow the operator an easy identification of noise origin in the relevant frequency band.
2.6 LlSN
This option allows the operator to configure the system accordind to its application; to detect the conducted interferences it is possible to use different USNs or probes with attenuation values con~ant or frequency varying.
Because interferences on power lines are not equal, a complete measure requires a full test on all 'the lines of the power supply.
L2-10 or L3-25 PMM's USN can be remote-controlled by PMM 8010 software capabilities. According to the selected USN, the command defines the power line on which the measure must be done.
The options grouping togheter different Jines (Le. L 1 + L2, ecc.) give, at any frequency, the worst measured values among the different lines.
When'a probe is used, it is possible to create and to load a table of its attenuation, as a function of the frequency.
2.7 MINIM. ATI.
Defines attenuator's value at the RF input. The choice is between 0 dB and 1 0 dB.
2.8 ZOOMS
Opens a window over 40 measuring points (the width of the window depends on the choosen frequency step and therefore the default width is 4/200 kHz), with central frequency selectable through a marker.
If a limit is displayed on the screen, its center frequency value is shown within the window. The marker is moved by means of left and right arrows.
To be noted that the speed in the movements of the cursor may be increased by using the arrow key together with the SHIFT key or the CONTROL key.
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2.9 ZOOML
This commands differs from the above described one for the width of the opened window, that is 80 measuring points; therefore the default width is 8/t,00 kHz.
The following figure shows the a zoom option on the display.
Fig. 9 - Sweep menu / ZOOML optio:1 activated
2.10 GO (GO THROUGH TABLE)
Starts the measure, according to the selected parameters; if a table has been loaded, an automatic measure is performed only at the frequencies specified witt"lin the table. The measurement can be aborted by means of ESC key.
It is possible to stop temporarely a measure using "F", "P" or "H" keyes (Pause, Hart, Freeze).
I'i I"
.111
$pt'o t ru,~
• l
p " " ft a 1 a " .. nUb 1 L,.II t I Ion
~\Ih fit"" n t t'i"tOf: n.1
III <Ill,,\!
:l(l I:W
3(,)
__________ ._--.1
Fig. 10 - Display of a measure in the frequency range from 10 kHz to 30 MHz
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2.11 WORST CASE
This option perform an indefinite number of recursive sweep measures and represents all of them on the graphic chart. The "ESC" key stop the actual measure. While saving, only the highest values for each frequency are kept into account; the result is a single rapresentation of the worst case among all the measured values for each frequency.
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~. SPECTRUM
PMM 8010 System for Conducted Interferences can operate as a Spectrum Analyzer, in the frequency range from 10kHz to 30 MHz.
The Spectrum mode option allows the operator to detect any change at a defined frequency while the measure is in progress.
Entering the SPECTRUM menu, through S key, it is possible to set the parameters and to start the measure.
The commands available within the SPECTRUM menu are:
o Center frequency
o Ref. level
o GaS
o Gal
3.1 CENTER FREQUENCY
Defines the center frequency, entering a value from 10K to 30000K / 30M (KiloHerz or MegaHerz).
3.2 REFERENCE LEVEL
Defines input reference level, from 50 dBuV to 120 dBuV (which is equivalent to define the input attenuation from 0 to 70 dB).
The level is adjustable in step of 10 dB.
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3.3 GO S and GO L
Start the recursive sweep. When one of the commands is entered, a window is opened showing the selected central frequency and its related measured level.
PM" 0 g 1 (}
'-'--"---' -----_._--_._-----------
Fig. 11 " Spectrum mode, center frequency selection.
A marker on the graphic chart can be moved along all the frequency range, by means of the arrows keys, to select a new center frequency. To be noted that the speed in the movements of the cursor may be increased by using the arrow I<ey together with the SHIFT key or the CONTROL key.
Pressing ENTER, a new window with the speCtral analysis is opened: to stop it and modify the parameters press ESC.
--l P HMO (} 1 0
. III [.-c~;;~~~~-~·:·--] 1'111l! 1 I (} _ :.~ ~~fS lovel :.. Sv,,,, -O'~oKi'i;--
Fig. 12 - Spectrum mode, recursive sweep within dedicated window.
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Selected values are then accepted with the ENTER key and spectral analyse is automatically restarted around the new selected center frequency.
When the spectrum window is opened, it is possible to move the central frequency (Le. the whole window) left or right using the relevant arrow key, as well it is possible to change reference level, moving up and down the window with the arrow keys.
GO S opens a window 4 / 200 kHz width while GO L opens a window 8 / 400 kHz width.
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With the commands of the MANUAL menu the operator is able to set the parameters for an accurate inspection about a particular frequency; it is also possible to create a table containing critical frequencies (see also TAB command).
A digital display and an analog indication, with max hold facility, indicate the tuned frequency level.
After entering the Manual menu, pressing key M, the following is displayed on the screen:
p " ... II 9111
96.5 dlljJ\,l
Fig.13 - Manual mode display.
The parameters, selectable moving up and down the arrow keys and pressing ENTER, can be changed. In the fol.lowing sections, parameters selection and setting· is discussed in details.
It is possible to modify some of the parameters value or options just using left (decrease) and right (increase) arrow keys.
NOTE: the measured value is more accurate (measurement error < J':' 0.5 dB) when the level indicator is within the green 01GA/EGA) or thin (eGA) dBuV values scale.
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4.1 FREQUENCY
Allows to enter tune frequency value, expressed in MHz or kHz, between 10 kHz and 30 MHz.
To enter a value different from the default one, please refer to point 2.1 of this manual. Fine tuning of the frequency is realized by mea,!s of the arrow keys.
Unsing the "INS or INSERT' key the actual frequency is added to the table od frequencies that the operator is going to create. The "DEL" key remove the tuned frequency from the' table.The "CRTL -- >" and "CRTL < --" keyes scroll onward and backward the loaded 'frequency table for a faster tuning on the desired frequency, while "HOME" and "END" keyes jump to the first and last frequency of the table. Once left the manual option, the program automatically enter the TAB command to allow the operator to manage the frequency table (save, unload, etc.).
4.2 REFERENCE LEVEL
It is possible to set tile receiver input reference level from 50 dBuV to 120 dBuV; by defa~lt it is initially set at an high value (100 dBuV) to avoid accidental damages; for this reason it should be carefully decreased, avoiding that the analog indication stays permanently in the upper part of the scale. The AUTO option automatically set the best reference value according to the measured level.
4.3 FREQUENCY STEP (Low and High BAND)
The two default values displayed (0.1/5 kHz) refer to the step of measurements, respectively in the frequency band 10 kHz - 150 kHz and 150 kHz - 30 MHz, (CISPR A Band and B Sand).
4.4 BW IF
CISPR regulations recommend two different IF filters for the measure of conducted interferences: 200 Hz bandwidth filter for measures up to 150 kHz and 9 kHz bandwidth filter for measures from 150 kHz to 30 MHZ.
Tne proper filter is automatically set by software procedure, according to the entered frequency value, nevertheless it is possible to change manually the value.
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4.5 oeTeCTOR
A choice among PEAK, CISPR and AVERAGE detector is available. In this way measurements on PEAK (instantaneous), ClSPR (quasi-peak) and AVERAGE (weighted) values will be performed.
It is pointed out that a peak measure gives generally worse result than CISPR or average measure.
4.6 DEMODULATOR
Inserting the AM or FM demodulator, it is possible to listen through the loudspeaker to listen to the noise modulating a certain carrier. This enables the operator for an easier identification of the noise origin, external or internal to the Device Under Test (OTU).
4.7 LlSN
As stated in section 2.6, this option allows the operator to configure the actual system for the measure of conducted interference. If PMM's L1SN L2-10 or L3-25 are used togheter with the 8010 RF receiver, in turn selection of the supply lines can be remotely-controlled with the SYS. CON. command.
5. LIMIT
The LIMIT menu allows the user, by means of its commands:
o Create
o Save
o Load
o Delete
to handle limits masks, defined accordingly to the relevant national/international regulations or particular customer's requirements .
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5.1 CREATE
The command enables the operator to draw a new limit mask moving the UP/DOWN and LEFT/RIGHT arrows on the screen and pressing ENTER to change direction. Creating mode is left depressing the ESC key. To be noted that the speed in the horizontal movements of the cursor may be increased by using the arrow key together with the SHIFT key or the CONTROL key.
5.2 SAVE
Saves a limit mask created with the above explained command. New limit is stored in a file.
5.3 LOAD
Loads the file containing the desired limit mask and display it on the screen graphic chart, to ease the check of the OUT.
A new loaded limit substitutes on the screen the old one, if any.
5.4 DELETE
Deletes the limit displayed on the screen.
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USN menu contains the commands to define system configuration, according to the PMM's USN or probe which is currently used.
The commands are:
o l2-10
o L3-25
o Probe
o None
6.1 l2·10
Configures the PMM 8010 System for Conducted Interferences with PMM L2-10 USN.
6.2 L3-25
Configures the PMM 8010 System for Conducted Interferences with PMM L3-25 USN.
6.3 PROBE
For particular conducted interferences measurements, a probe is required. This command is used to Create, Save or Load a probe loss table (dB) or, for example, the' k-factor table when a ROD - antenna is used for radiated measurements in the frequency range from 10 kHz to 30 MHz.
6.4 NONE
The system has no particular configuration: it may be used, for istance, with L 1-150.
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The PRINT option allows the operator to get special written warnings while performing the measurement or hard-copy printout, as final report of a measurement session.
The commands available within the PRINT menu are trw following:
o Plot·
o Plot on file
o V/rite
o Hard Copy
NOTE: to plot a measurement report (Plot and Plot on file commands) with three different color pens, run PMM 8010 software with the command 8010/P.
7.1 PLOT
This command is used to print out a measurement report by means of a plotter connected to the PC/AT, where the 8010 software is run. This command allows to add a text line of notes, etc. to the measurement report.
Before starting to plot, it is better to Cl18Cl< the connection between computer and plotter.
The correct wiring diagram is shown in the following page figure. The interface is standard RS232, with 25 PIN connector.
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._----------_.
Fig. 14 - PC - Plotter wiring diagram.
Should any difficulties still arise, please use the DOS MODE command, to configure in the correct way the serial channel (for example: "COM: 9600, N, 8, 1, P"). Further details can be found in any DOS manual, under the asynchronous communication section.
7.2 PLOT FILE
Creates a file (FILE.PL T) of a measurement report. This command allows to add a text line of notes, etc. The file can be plotted directly from DOS, using the DOS plot utilities.
7.3 WRITE
This command provides warning messages on a printer whenever the signal level is close-to or over the selected limit.
Written reports can be obtained both during SWEEP process and "off-line", when a measure file is reloaded to the display.
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When chosing the WRITE option, the program asks the operator to enter an offset value (in dB) from the limit.
o If 0 is entered, the program will write messages every time the measured levels is over the limit.
o If a non~zero. value is entered, the message will be written only when the value trespasses this offset from the limit (to be noted that - for istance - if the , operator enter - 5 dB, the program will warn about all the points whose value is over the limit or, while still below, are closer than 5 dB to the limit).
When a measure is running, warning messages are printed in real-time, without any measurement interruption. Warning print-out has the following format:
The meaning of the message parts is the following:
(1) is the name of the file where the measure has been saved or "Untitled" if the masure is still running (to be noted that it is infact possible to have this kind of print option also on stored files, when compared to limits).
(2) is the date (month/day/year).
(3) is the name of the selected limit.
(4) is the frequency value whose level has exceeded minimal limit distance value
(5) signal level
(6) limit value
(7) difference between limit and signal level.
7.4 HARDCOPY
This command, equivalent to DOS "Print Screen", is available only when a CGA configured monitor is used or the PC uses a DOS release from 5.0 .
If the PC is equipped with EGA/VGA monitor interface and DOS 5.0 is not available, it is possible to use the command running the 8010 software with the command: 8010/CGA.
In both cases, before running PMM8010 software, it is necessary to run DOS utility GRAPHIC.EXE.
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e. TAt;!
Using this option the operator can create a table with up to 100 critical frequencies; during the measurement session the system automatically goes through this table giving the response in a very short time.
The commands available within this menu are the following:
Create
Save
Load
Unload
8.1 ~REATE
Entering the appropriate values, a frequency table is created.
8.2 SAVE
Allows the operator to save a file with ".STP" extension, cantaining the frequency table.
8.3 LOAD
This command loads a previously saved frequency table. The list of availa.ble tables is displayed on the screen.
8.4 UNLOAD
Unload the actual frequency table, to allow the operator for a new table loading or for standard sweep during the measurement session.
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An automatic, self-calibrating procedure has been inserted in order to allow:
- testing 8010 Signal Analyzer;
- adjusting correction values for the measure.
When the procedure is run, by selecting trls option Autocal of the main menu (enter the A key), the input preselector is connected to an internal high-precision pulse generator, working at the frequency of 100 Hz.
This test signal is analyzed in the frequency domain and the result are compared with the expected values, stored in the software sub .. process.
In case of major differences, the system will warn the opemtor by means of a "beep" sound and a star "*,, displayed on the screen. The 8010 Signal Analyzer shall be taken to the .assistance centre for repairs.
In case of minor differences (less than 1 dB) between the measured and the aspsGted values, this difference will be tal<en into account by the software program, when displaying the results (self-adjustment).
Due to the importance of having a well-calibrated instruments, we recommend to run the AUTOCAL routine at the beginning of each measuring session (Le. once a day, after having switching-on and warming-up for 3-5 minutes the system).
The Help command displays a text file, containing a brief explanations of each command and option.
