Manuale d’uso / di manutenzione del prodotto NT955 del fabbricante Test-Um
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V alidat or -NT TM NETWORK/CABLING CERTIFIER OPERA TING INSTRUCTIONS V alidator NT955.
6 MNO JKL 5 4 GHI * 7 PRS 0 # 9 TUV 8 QZ WXY M E N U 1 A C C P T T E S T 3 ABC 2 DEF SEL Q U I T T est Results Untitled1.job 50% T est-Um Inc. validator 2004 Oct1 1 10:53:01 Expected Results 1 1 2 2 3 3 6 6 4 4 5 5 7 7 8 8 Cable001 Pass 1 1 2 2 3 3 6 6 4 4 5 5 7 7 8 8 T est Time: 10/1 1/2004 10:53 A.
Congratulations! Y ou have just purchased the world’s most advanced Speed and Performance Certier . Y our V alidator-NT is designed to give you years of reliable service with reasonable care. Remember these important Care Points. • Re-charge the lithium-ion batteries nightly .
T ABLE OF CONTENTS Introduction ........................................................................ 5 Ethernet Cable Certication .............................................................. 6 Active Network Features .........................
T ABLE OF CONTENTS 4. How Auto T est Works .................................................. 52 4.1. Cable T est Schedule ................................................................ 54 4.2. Site Info .............................................
5 T est-Um NT955 Series Introduction The V alidator-NT (NT955) Certier uses Speed and Performance criteria to test and certify Ethernet network cables against IEEE802.3 specications up to 1 Gigabit. It also tests critical noise and delay (Skew) measurements to assure that the respective cable runs will perform to their maximum capability .
6 T est-Um NT955 Series Ethernet Cable Certication Speed and Performance Certication uses digital technology centered on the latest advances in Gigabit Ethernet T ransceivers.
7 T est-Um NT955 Series Active Network Features V alidator-NT includes three functional test areas that are designed to report cable performance and verify connectivity to network devices. They are Port Discovery , Ping, and Hub Flash. Port Discovery identies telephone or network devices connected to the other end of the jack or cable.
8 T est-Um NT955 Series T est Ports and Cable Adapters V alidator-NT is equipped with four dedicated ports for testing data, telephone, coax, and 2-wire cable types.
9 T est-Um NT955 Series Data Cables and Connection Figure 1. TP55 Connected to V alidator-NT Figure 2. TP68 Connected to V alidator-NT T elephone Cable and Connection Figure 3. TP20 Connected to V alidator-NT V alidator TM Introduction V alidator TM Introduction RJ1 1, 6-wires T elco interface USOC pairing (TP20) 7.
10 T est-Um NT955 Series T wo Wire and Connections Figure 4. Video Coaxial Cable Connected to V alidator-NT Figure 5. Security Cable Connected to V alidator-NT Figure 6.
1 1 T est-Um NT955 Series Data Cable & Remote Connection Figure 7. Wiremapper Remote #1 Connected to V alidator-NT V alidator TM Introduction V alidator TM Introduction.
12 T est-Um NT955 Series Registration Y ou must register your product with T est-Um Inc. to be eligible to receive rmware and software updates, as well as important product announcements, helpful hints and other support services. T o register , go to our web site at www .
13 T est-Um NT955 Series Support Information Post-sale T echnical support is available Monday through Friday 8:30 am to 4:30 p.m. Online technical assistance is available via our web site at www .test-um.co m by selecting V alidator-NT from the Home screen and clicking Contact Us.
14 T est-Um NT955 Series T ests Performed V alidator-NT performs specied tests that produce P ASS or F AIL results on a wide range of standard cables. In addition, a Bit Error Rate T est (BERT) is performed to determine the actual speed capabilities of CA T 5, CA T 5E, and CA T 6 network cables.
15 T est-Um NT955 Series About Y our V alidator-NT Main Unit Features Figure 8. Main Unit Features V alidator TM About Y our V alidator-NT V alidator TM About Y our V alidator-NT 6 MNO JKL 5 4 GHI * 7.
16 T est-Um NT955 Series . T able 1. Main Unit Features Item Feature Description 1 Power Key is pushed to power unit on/off. When unit is on a short tap changes the backlight from dim to bright. Holding key down for over a second turns the unit off. 2 M E N U Menu Key opens a shortcut window of simple functions.
17 T est-Um NT955 Series T able 2. Main Unit Features (Cont.) Item Feature Description 10 Display 4 inch LCD color screen. 1 1 Data Jack RJ45, 8 wire data interface, T568A/B pairing.
18 T est-Um NT955 Series Remote Unit Features 1 2 4 3 9 11 6 5 8 7 10 VALIDATOR REMOTE 76~100 76~100 50~75 50~75 25~49 25~49 5~24 5~24 LOW BATTER Y STA TE CHARGE LINK MADE IN USA TM TM Figure 9.
19 T est-Um NT955 Series T able 3. Remote Unit Features Item Feature Description 1 Link LED T urns on when a link is established with another network device. 2 Charge LED Battery is charging when LED light is blinking. 3 Battery state When selected the battery life capacity is shown.
20 T est-Um NT955 Series Standard Accessories V alidator TM About Y our V alidator-NT V alidator TM About Y our V alidator-NT NT955 V alidator-NT™ NT955 V alidator-NT™ NT930 V alidator-NT™ Carry.
21 T est-Um NT955 Series Standard Accessories (Continue) Optional Accessories V alidator TM About Y our V alidator-NT V alidator TM About Y our V alidator-NT (2) TP62 Adapters, BNC Plug to F Jack (2) .
22 T est-Um NT955 Series Menu Options & Navigation 6 MNO JKL 5 4 GHI * 7 PRS 0 # 9 TUV 8 QZ WXY M E N U 1 A C C P T T E S T 3 ABC 2 DEF SEL Q U I T VALIDATOR-NT TM OPEN RENAME COPY DEL JOB Job Manager Untitled1.job T est-Um Inc. validator File Name Modified File Size T est-um.
23 T est-Um NT955 Series Battery and Power Management The lithium-ion rechargeable batteries (NT93) included with the V alidator- NT main unit and remote are recharged any time the V alidator-NT or remote are connected to the AC adapters included in the V alidator-NT kit.
24 T est-Um NT955 Series V alidator-NT Main Unit When powered on, the V alidator-NT reports the charging status at the top of the screen under the battery icon. A green full battery icon indicates the battery is fully charged. As the battery discharges, the percentage of remaining charge is displayed in 10% steps.
25 T est-Um NT955 Series V alidator-NT Remote Unit The Remote unit has a battery charge indicator light that is on solid during rapid charge, blinks slowly while topping off, or is of f when charging is completed. The 76-100% light will be on to indicate a fully charged battery .
26 T est-Um NT955 Series Battery Lock Feature A Battery Lock feature on the main and remote V alidator-NT units is designed to prevent accidental ejection of the battery .
27 T est-Um NT955 Series Operations The V alidator-NT main unit is powered on by pressing the red power button. When powering on, the unit will display a series of start up screens until the Start screen is reached, which contains the main menu.
28 T est-Um NT955 Series Network T ests Selecting this button takes you to a menu of three manual tests that report the condition of the cable and verify connectivity to network devices. They are Port Discovery , Ping T est, and Hub Flash. T est Results cannot be saved.
29 T est-Um NT955 Series 1. Setting Up the T est T ool The Setup menu allows the user to adjust internal functions such as Display Contrast, the internal time clock, English or Metric units, the displayed language, and Shutdown T imeouts. Most of these functions can be set once and left alone unless a specic change is desired.
30 T est-Um NT955 Series 1.1. Display Contrast The V alidator-NT main unit allows contrast settings for dif ferent environments. Use the + (F1) soft key to increase the contrast for a dark environment or – (F2) soft key to decrease the LCD contrast in a bright environment (see Figure 1.
31 T est-Um NT955 Series 1.2. Printer Settings Select Printer Settings (see Figure 1.3). A pull down menu appears which displays common Bit Rates for printers. The Bit Rate you select must match the Serial Port Printer properties of the printer you use.
32 T est-Um NT955 Series 1.3. Shutdown Timeouts A Power Save mode is installed in V alidator-NT to conserve battery life (see Figure 1.4). When the pre-set time limit is reached without any key input the main unit screen will begin to blink. Pressing any key will bring back the full screen and reset the timer .
33 T est-Um NT955 Series 1.4. Set the Clock using the Real Time Clock Screen Using the drop down dialog boxes, select the current year , month, day , hour , and minute (see Figure 1.5). Press Accept to select your choice and move to the next eld. Press Set (F1) to conrm your choices and return to the Setup Screen.
34 T est-Um NT955 Series 1.5. Localization Using the drop down dialog box, select Metric or English units to report length measurements (see Figure 1.6). Press Accept. Press OK to conrm your choice and return to the Setup screen. OK Units Untitled1.
35 T est-Um NT955 Series 1.6. Calibrate The calibration procedure is performed to set a reference point for cable length to 0 feet/meters. Once calibration is performed, the test unit retains the information. The V alidator-NT does not require any other calibration.
36 T est-Um NT955 Series 2. V alidator-NT Properties The Properties menu displays buttons that contain internal information on the state of charge associated with the battery , product revision levels, available free space on the Compact Flash card, and T est-Um support information.
37 T est-Um NT955 Series 2.1. Battery Info This screen indicates whether the unit is operating on Battery Power or External Power and displays information that allows the user to monitor the remaining charge status and aging of the battery . (Figure 2.
38 T est-Um NT955 Series Battery Properties Untitled1.job RST CHRG T est-Um Inc. validator 100% 2005 Aug 25 10:53:01 BA TTERY POWER Charge Remaining - 100% Serial Number - 3462150 Charge cycles --1 Remaining Maximum Capacity - 100% T otal Charge Accumulated - 2 Status - Normal Figure 2.
39 T est-Um NT955 Series 2.2. Product V ersion This screen displays the product’s electronic serial number plus the revision levels of the hardware, rmware and software in the V alidator- NT (See Figure 2.4). Should you require technical assistance you may be asked to refer to this screen to conrm current product revision information.
40 T est-Um NT955 Series 2.3. Compact Flash Card Usage The V alidator-NT kit includes a high quality mass storage compact ash card. Approximately 6000 cable tests can be stored per 32 Megabytes of card space. Press Select to view a pie chart that displays free card space with numeric values for percentage and kilobytes available (See Figure 2.
41 T est-Um NT955 Series 2.4. Support Info The Support Screen displays T echnical Support contact infor mation, including our web site, telephone number , and e-mail address.
42 T est-Um NT955 Series 6. Select the rmware le from the Firmware Package list. Press the Install soft key (F1) to install the rmware. (Figure 2.7) INST ALL Firmware Package V AL-full-02.03.TUI Manage Firmware Untitled1.job T est-Um Inc.
43 T est-Um NT955 Series 3. Managing Job Files The Job Manager screen is used to view a list of all job les stored on the compact ash (CF) card. Use the up and down arrows to highlight the job entry of interest. The soft keys are labeled with the functions that can be performed on the currently highlighted job: Open, Copy , Rename, or Delete.
44 T est-Um NT955 Series Press the OPEN (F1) soft key to open the selected job. Opening the job will switch you to the Auto T est screen where the Cable T est Schedule displays all of the cable runs associated with the selected job.
45 T est-Um NT955 Series The Job Utilities screen provides the ability to create new jobs and template (*.T ut) les as well as the Save As function to save the current job information in memory under a different job name. From the Start screen, select Auto T est, and use the right arrow key to scroll to Job Utilities.
46 T est-Um NT955 Series 3.1. Creating A New Job Creating the job in Plan-Um and uploading it to V alidator-NT is generally the quickest and easiest method of preparing your Cable List for testing. Only T est Results associated with a job can be saved and downloaded to Plan-Um for printing and archiving.
47 T est-Um NT955 Series 3.2. Creating Job Information Job Information consists of Contractor Information and Site Information. Contractor Information identies contact information for the company performing the job. Site information contains information about the site you are designing.
48 T est-Um NT955 Series 3.3. Creating T emplate Information The purpose of the T emplate le (*.tut le) is to avoid reentering Company Information and/or Custom Cable Denitions for each job by saving the information in a T emplate that can be used on multiple jobs.
49 T est-Um NT955 Series 3.4. Using T emplate Files Each time you create a New Job, select a previously created template with Contractor Information and/or Custom Cable Denitions to avoid reentering information. (Figure 3.6) 1. From the Start screen, select Auto T est .
50 T est-Um NT955 Series 3.5. Step By Step Instructions for Creating a New Job 1. From the Start screen, select Auto T est. 2. Using the arrow key navigate to Job Utilities and press Select. 3. On the Job Utilities screen, select New . 4. Enter a Filename using the alphanumeric keypad.
51 T est-Um NT955 Series 1 1. When all elds have been completed, press Quit. The Auto T est screen reappears. 12. Select Cable T est Schedule . Using the alphanumeric keypad create a T est Schedule by completing the Cable ID eld and selecting a Cable T ype from the drop down menu.
52 T est-Um NT955 Series 4. How Auto T est Works Creating the Cable T est Schedule in Plan-Um, uploading it to the V alidator , and running Auto T est is the easiest and most efcient way to verify cables.
53 T est-Um NT955 Series Current Job Untitled1.job Site Info Contractor Info Cable T est Schedule Job Utilities Custom Cable Definitions T est-Um Inc. validator 2005 Aug 25 10:53:01 100% RESUL TS DEL .
54 T est-Um NT955 Series 4.1. Cable T est Schedule The Cable T est Schedule displays all the individual cable runs associated with the open job. For your convenience when testing, you can sort each eld in the Cable T est Schedule in ascending or descending order .
55 T est-Um NT955 Series A P ASS or F AIL indication will be briey displayed along with a speed rating up to 1 Gigabit depending on the cable type. The screen will show the Remote ID, wiremap of the individual pairs, and automatically scroll down to display Length, Skew , SNR and BERT test results.
56 T est-Um NT955 Series T est Results Untitled1.job T est-Um Inc. validator A B C D BERT Results: 188ft 186ft -- -- -- -- Length Max: 300ft Skew Max: 35ns SNR Min:20db BACKSPC PG UP PG DOWN -- -- 30.0 30.0 Short 100% 2005 Aug 25 10:53:01 184ft 7 ft Figure 4.
57 T est-Um NT955 Series T est Results Untitled1.job T est-Um Inc. validator A B C D BERT Results: Split 188ft 186ft -- -- -- -- Length Max: 300ft Skew Max: 35ns SNR Min:20db BACKSPC PG UP PG DOWN -- -- -- -- Split 100% 2005 Aug 25 10:53:01 Figure 4.
58 T est-Um NT955 Series 4.2. Site Info The next button on the Auto T est sub-menu is Site Info . This button displays the Customer Contact Information associated with the job you have selected for testing. By highlighting and selecting a eld you can update or change the information in each eld, i.
59 T est-Um NT955 Series 4.4. Custom Cable Denitions The Custom Cable Denitions screen shows all dened cable types loaded into the V alidator-NT from the current job and what category of test is performed on each type. The soft keys, F1 thru F3, allow for adding, editing, and deleting cable information.
60 T est-Um NT955 Series 8. T o save the custom test parameters you have entered, press the Save T ype soft key (F3). 9. A message box appears that asks you to conrm the changes in the test parameters you have entered. If you are sure of the changes press Y es.
61 T est-Um NT955 Series BACKSPC NEW EDIT DEL TYP Type Name Category Default CA T5 CA T5E CA T6 CA T3_4P CA T3 CA T3_2P RG-6 Fire Data Data Data Phone Phone Phone 2 Wire 2 Wire Y es Y es Y es Y es Y es Y es Y es Y es Type T able Screen Untitled1.job T est-Um Inc.
62 T est-Um NT955 Series 4.5. Job Utilities The last button on the Auto T est menu is Job Utilities . This screen has buttons to allow creation of a new job le, open an existing job le on the CF card, export a template le, save the le that is currently open, or save an open le as a le with a new name (Figure 4.
63 T est-Um NT955 Series 4.6. Step by Step Instructions for Performing Auto T ests 1. From the Start Menu, navigate to the Job Manager using the arrow keys which move from left to right on each row . 2. Select the Job you wish to test. Press Open. 3. The Auto T est screen is presented with the Cable T est Schedule button highlighted.
64 T est-Um NT955 Series 10. Press the Results (F2) soft key to display detailed test information for the cable that is currently highlighted. 1 1. Pass test parameters display in green and fail parameters display in red. 12. T est Results are automatically saved to the current job.
65 T est-Um NT955 Series 5. Running Manual T ests Manual T ests performs individual tests on Data , Phone , or 2-wire cables based on dened test standards. The tests that can be performed for each selected cable type are listed on the Manual T est screen for that type (Figure 5.
66 T est-Um NT955 Series T est-Um Inc. validator 100% 2005 Aug 25 10:53:01 2-Wire Cable Phone Cable Data Cable Cable T ests Untitled1.job T one Cable T est Data Manual T ests Untitled1.job BERT T est Hub Flash T est-Um Inc. validator 100% 2005 Aug 25 10:53:01 Select Rate: Hub Flash Untitled1.
67 T est-Um NT955 Series 5.2. Phone Cables Phone Cables are dened as cables wired to the USOC 3 pair standard for pin numbering and pairing. The test shows opens, shorts and length of the run. The wiremap and length measurements are displayed. (Figure 5.
68 T est-Um NT955 Series 5.3. 2-Wire Cables 2-wire cables are tested for wire map and length. Y ou can also send tone over the cable. (Figure 5.4) T est-Um Inc. validator 100% 2005 Aug 25 10:53:01 2-Wire Cable Phone Cable Data Cable Cable T ests Untitled1.
69 T est-Um NT955 Series 5.4. Step by Step Instructions for Performing Manual T ests 1. From the Start Menu, select Manual T ests. Choose Data, Phone or 2-wire cable type.
70 T est-Um NT955 Series Placing T one On a Cable Pair 1. Select Manual T ests . Choose Data, Phone or 2-wire cable type . 2. The Manual T est Menu for the cable type you selected displays. 3. Select T one . 4. Select the desired T one Sound . Press Accept.
71 T est-Um NT955 Series T esting Cable Length When you run Cable T est, length is reported in feet or meters. In addition, the Manual Cable T est for data includes a quick independent length test using the Length (F1) soft key . This test is useful to the installer to determine how much cable is left on the reel or the length of a cable run.
72 T est-Um NT955 Series Hub Flash T est This test sends a link signal to test for active Ethernet equipment. This is the only test that runs with other Ethernet equipment.
73 T est-Um NT955 Series Performing a Bit Error Rate T est A Bit Error Rate T est (BERT) sends data packets from the main unit to the remote, measures speed and errors and correlates this to a P ASS or F AIL result. This test can only be run from end to end on a single cable, it cannot be run through an Ethernet hub or switch.
74 T est-Um NT955 Series 6. Performing Active Network T ests Active Network T ests include four functional test areas designed to report cable performance and verify connectivity to network devices: Port Discovery , Ping , Cisco Discovery Protocol, and Hub Flash .
75 T est-Um NT955 Series 6.1. Port Discovery Port discovery identies telephone or network devices connected to the other end of the jack or cable. The test begins with a search for voltages that may be present.
76 T est-Um NT955 Series Port Discovery ISDN 1 2 3 4 5 6 7 8 . . . Untitled1.job T est-Um Inc. validator 2005 Aug 25 10:53:01 + + 100% ISDN ISDN 6.3 ISDN Phone Detected Port Discovery Legacy Power over Ethernet 1 2 3 4 5 6 7 8 . . . Untitled1.job T est-Um Inc.
77 T est-Um NT955 Series If no telephone or voltage sources are found, V alidator-NT attempts an Ethernet link. If a link is found, information about the link is displayed: - Identies the Ethernet .
78 T est-Um NT955 Series If neither voltages nor Ethernet is detected, V alidator-NT searches for its remote to run a cable test. If the remote is found, a manual mode cable test is run and the remote ID, wiremap, full Signal to Noise Ratio, and Skew test results (1000Mbit only) are displayed.
79 T est-Um NT955 Series 6.2. Ping T est The Ping T est is used to verify connectivity to resources on or off the network and IP addresses. The Ping T est will simultaneously Ping up to seven different IP addresses and can be run in DHCP or manual addressing modes.
80 T est-Um NT955 Series For manual IP addresses, uncheck the DHCP mode box by pressing the up and down arrow keys to highlight the DHCP box and press Select to deselect DHCP mode. Use the arrow keys to highlight the My IP , Gateway Router (GWRTR) and Domain Name Server .
81 T est-Um NT955 Series The Ping T argets must also be set manually . T o change the IP targets, press the T argets soft key (F4) and edit these elds as necessary using the keypad, Backspace (F1) and Delete (F2) soft keys. The www .com soft key (F3) is used as a shortcut to add the common “www .
82 T est-Um NT955 Series The Ping T ool soft key (F3) only shows on the IP address screen once valid DHCP information or manual IP addresses are congured. All the IP addresses that are currently setup to be pinged are displayed on entry . Uncheck the box next to any addresses you do not want to ping.
83 T est-Um NT955 Series Y ou can increase the length of the data packet used to ping by highlighting the target IP Address and using the right arrow key to highlight the word Long. Press Select to toggle the size of the data packet between normal and long.
84 T est-Um NT955 Series 6.3 Cisco Delivery Protocol This feature detects Cisco Delivery Protocol (CDP) messages broadcast by Cisco bridges and routers over the network to inform each other of their existence. The content of the CDP message contains addresses that SNMP messages can be sent to.
85 T est-Um NT955 Series T o view Cisco Delivery Protocol broadcast messages 1. From the Start Menu, select Network T ests. Select Cisco Delivery Protocol. 2. Use a patch cable to connect the V alidator-NT main unit to the network or device port to be monitored for CDP .
86 T est-Um NT955 Series 4. T o clear the current broadcast, press the Clear soft key (F1). The screen goes blank. CDP Display Screen Untitled1.job BACKSPC CLEAR ST ART T est-Um Inc. validator 100% 2006 Jul 05 10:53:01 ST OP Reading CDP packets from network.
87 T est-Um NT955 Series 6.4. Hub Flash Hub ash sends an intermittent link signal to ash the link status light on Ethernet equipment. Y ou can select a specic data rate or Any if you wish to have the hub and the V alidator-NT auto negotiate the speed.
88 T est-Um NT955 Series 6.5. Step by Step Instructions for Performing Network T ests 1. From the Start Menu, select Network T ests. Choose Port Discovery , Ping T est or Hub Flash . Warning! Network T est Results will NOT be saved 2. Use a patch cable to connect the V alidator-NT main unit to the jack or network device to be tested.
89 T est-Um NT955 Series Ping T est 1. Select Ping T est. 2. Press Select to begin DHCP request (DHCP box checked) or to Congure IP addresses in manual address mode (box unchecked). In manual address mode, be sure the displayed addresses are appropriate for the network being tested.
90 T est-Um NT955 Series Hub Flash 1. Select Hub Flash. 2. From the drop down menu, select a specic data rate or Any if you wish to have the hub and the V alidator-NT auto negotiate the speed.
91 T est-Um NT955 Series 7. Uploading/Downloading Jobs 7.1. Uploading the Cable T est Schedule to the V alidator-NT Open the My Documents folder on your desktop. Right click the Plan- Um job you want to transfer , and select Copy . Power the V alidator on.
92 T est-Um NT955 Series 7.2. Downloading T est Results from V alidator-NT to Plan-Um Open the My Computer folder on your desktop. Power the V alidator- NT on.
93 T est-Um NT955 Series 8. Archiving/Saving T est Results T o save, press Menu. Use the Up Arrow key to highlight Save Job and press Select to save your T est Results to the ash memory card. (Figure 8.1) Another method for saving a job is to select the Job Utilities menu from the Current Job screen and press the Save or Save As option.
94 T est-Um NT955 Series 9. Printing T est Results The most efcient method to print job reports is to download test results to a pc/laptop. See Uploading/downloading Jobs. Future upgrades may permit the user to print T est Results directly from the V alidator-NT to a serial port printer using a D-Sub 9 pin Male to Female cable assembly .
95 T est-Um NT955 Series 10. Application Notes for T ypical Field Use 10.1. New Job, New Cable Installations 1. A Layout using the Plan-Um software will be created conforming to the customers’ facility or residence and a job id created. 2. Cables will be chosen and run between agreed upon ports and a Comm.
T est-Um Inc. The Intelligent T est Solutions Company 808 Calle Plano Camarillo, CA 93012 (805) 383-1500 / F AX (805) 383-1595 www . T est-Um .com TU9862-1 (REV B-07/06).
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Test-Um NT955 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Test-Um NT955 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Test-Um NT955 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Test-Um NT955 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Test-Um NT955, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Test-Um NT955.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Test-Um NT955. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Test-Um NT955 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
