AEA Technology 20TDR Скачать руководство пользователя страница 39 | Manualshive

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Figure 3-9

Figure 3-10

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Содержание 20TDR

Страница 1: ...Step Time Domain Reflectometers E20 20TDR and Avionics TDR Step Time Domain Reflectometers TDR and Avionics TDR all models...

Страница 2: ...ve manufacturers This information is believed to be accurate at the time of publication but can not be guaranteed Please consult specific cable manufacturer s website or catalogs and specification she...

Страница 3: ...r 6 Trace 7 Memory 7 Cable 7 Function Keys 8 Range 8 Zoom 8 Z Scale 8 Cursors 1 2 8 Tone 9 Alpha numeric Keys Backspace key 10 Section 2 Setup and Measuring Cables General 11 Step TDR Operation 11 Imp...

Страница 4: ...e Prior Settings 27 Delete Traces 27 ETDR PC Vision Software 27 Operating Systems 27 Installation 28 Run ETDR PC Vision 28 Connection Error Correction 29 Com Port Utilities 29 Check List to Establish...

Страница 5: ...tion should be taken to ensure cables are free of any voltages or static charge prior to connecting the TDR in a potentially explosive atmosphere Operating Precautions 1 The TDRs are designed for rech...

Страница 6: ...This page intentionally left blank...

Страница 7: ...des warranty information and cleaning instructions It s a PDF document formatted for local printing Warning and Operating Precautions If you have not already done so please read the Explosive Atmosphe...

Страница 8: ...and active functions Top Connectors See Figure 1 2 for all available connector combinations Ruggedized ABS Plastic Case Quarter VGA Backlit LCD Menu Keys Alpha numeric Keypad and Backspace Key ON OFF...

Страница 9: ...20F Network F and RJ 45 Connectors Part Number 6021 5041 CATV Cable List Part Number 6021 5042 Telco Cable List E20 20B Network BNC and RJ 45 Connectors Part Number 6021 5053 VDV RF Cable List Avioni...

Страница 10: ...ousekeeping and reset the TDR to factory default settings To see more about when to use the Soft Reset refer to the ENTER key instructions or consult the Operating Manual Note If the TDR s menu cursor...

Страница 11: ...rsor 2 when those functions are active The up down keys control the Scale or Tones selection The Indicators in the menus Help Menu this guide the Operating Manual indicate when to use the appropriate...

Страница 12: ...ill open its own menu shown in Figure 1 4 Figure 1 4 If a function key is active or any other menu is open pressing the Help key will provide context sensitive help about the subject function or the m...

Страница 13: ...lling a trace resets the instrument to the recalled trace s settings This makes all stored traces a stored instrument set up as well After recalling one or more traces selecting PRIOR SETTINGS will re...

Страница 14: ...ol the zoom span Pressing the key will reduce the range either side of the cursor until minimum range is reached pressing the key will expand the range either side of the cursor until original range s...

Страница 15: ...hange cursor control press the cursor key desired to be active NOTE When the differential reading from the active cursor is from the left to the right the differential readings will be positive When t...

Страница 16: ...phone pads Repeated pressing of the same key will cycle from the number to the next alphabetic character First character above the 1 key is the space The Bcksp key Backspace will delete the last chara...

Страница 17: ...on those TDR s to clearly see longer cables and faults further away Step TDR s like the TDR transmit continuous wave sweeps on the cable and interpret the reflections to provide more detailed informat...

Страница 18: ...transmitted wave will travel along that cable at 67 7 the speed of light in a vacuum TDR s measure the delay time of the reflected signals The time is divided in two because it is always a round trip...

Страница 19: ...step guided setup procedure for preparing the TDR for measuring any cable type The guided process includes Selecting a cable type from a pre stored list in the TDR or manually entering data Choose un...

Страница 20: ...tensity contrast level turn on off keypad beep or to make settings in the BATTERY MENU figure 2 4 or DATE TIME menu figure 2 5 Figure 2 4 BATTERY SAVER Use to turn BATTERY SAVER on and to turn BATTERY...

Страница 21: ...ion when the TDR is on external power BATTERY STATUS Displays the cells current voltage level normally 11 5 to 8 6V and mA of charge or discharge Discharge indicated by a negative mA indicates the ins...

Страница 22: ...the TDR s connector Press the then use the alpha numeric keypad to enter the start distance desired then press to save and return to the menu NOTE If this item indicates NULL then there is a Test Lea...

Страница 23: ...could be service affecting depending on the frequency employed on the cable The higher the frequency the more smaller faults affect performance TEST LEAD NULL Use to turn ON or OFF or press to store a...

Страница 24: ...llow the on screen instructions to enter new description impedance Z and Velocity Factor VF MANUAL ENTRY Use for a one time entry not to be saved on the Cable List Permits entering a cable s name or d...

Страница 25: ...as there are no undocumented maintenance loops in the cable Use to select this feature and follow the on screen instructions to connect the cable leave the opposite end open and mark the end with the...

Страница 26: ...able type selected Once selected it will display at the top of the measurement screen See Figure 2 7 above The Crsr 1 and or Crsr 2 keys used with the left right arrow keys control the active cursor w...

Страница 27: ...is activated when pressed and the green LED is lit A Tone menu will be presented in the LCD as shown in Figure 2 10 Use the keys to select the tone frequency desired and the keys to select having the...

Страница 28: ...eet long and shorted at the end The short is indicated by the trace dropping from the cable s nominal impedance to zero or near zero Ohms A twisted pair cable will display the same trace drop to zero...

Страница 29: ...is an example of a wet tap Remember TDR distances in and after a wet section are invalid as the velocity slows to an unknown velocity in the wet section Figure 2 15 Figure 2 16 Figure 2 17 is an examp...

Страница 30: ...he same cable jacket and a re split which corrected the split at the next junction Split is marked by Cursor 2 at 94 ft and the re split by Cursor 1 The CRSR indicates the distance and impedance chang...

Страница 31: ...he recalled trace s setups After the desired trace is recalled press once to exit the recalled trace and start a new measurement using the recalled trace s setups 2 When you recall a trace or traces a...

Страница 32: ...procedures in ETDR PC Vision CAUTION There is no Undelete All deletions in the TDR s memory are permanent Recall Traces Press the key to access the memory functions shown in Figure 3 1 above Then use...

Страница 33: ...e TDR s settings and cable type being used before recalling traces from memory Delete Traces To delete a highlighted trace press key and follow on screen directions The ESC key will cancel the delete...

Страница 34: ...ed When finished the ETDR PC Vision icon will appear on the desktop NOTES 1 The appropriate FTDI Driver must also be installed for ETDR PC Vision to communicate with TDR The drivers are on the enclose...

Страница 35: ...software Figure 3 5 Check List to Establish Communications 1 Ensure TDR is powered on and at the Measurement Screen 2 Ensure the USB cable is connected between the PC and TDR 3 If the Disconnect butto...

Страница 36: ...lot Archived Trace This button will open a folder on the PC to select a previously stored trace or move to a folder or PC connected storage media for selecting a previously stored trace TDR connection...

Страница 37: ...lighted on the uploaded list or to archive all the traces in the uploaded list When a single trace is archived on the PC from the graphical plot the trace by default takes the name of the plot uploade...

Страница 38: ...To maintain a set scale use manual scale in Save Settings under Chart Window Chart Title Rename the uploaded title and change title color Chart Plot Turn on off plot points and setup mouse pointer to...

Страница 39: ...33 Figure 3 9 Figure 3 10...

Страница 40: ...s stated herein No other warranties are expressed or implied AEA TECHNOLOGY SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICUL...

Страница 41: ...offset distance Start Distance setting or Test Lead Null is ON or both Press Trace key reset Start Distance to 0 and or turn OFF Test Lead Null TDR distance readings are in error Wrong cable type or...

Страница 42: ...36...

Страница 43: ...Not very old cells stop recharging 1 Battery Type NONE or ALKALINE selected 2 Charging power is not sufficient or not on 3 Battery Temperature too HOT or COLD 4 One or more cells is installed with pol...

Страница 44: ...38...

Страница 45: ...2m span Accuracy 0 2 1 inch 2 54cm VF uncertainty Impedance Z Full Range 0 to 1K Ohms Range Scales 20 50 100 200 500 and 1KOhms Resolution 0 1 Ohms Accuracy 3 of reading may vary over longer lengths...

Страница 46: ...etection on impedance trace Enhances any faults on any cable type removes dribble up DC loop resistance for flatter trace Cable Sampler Computes VF on sample length VF Search User adjust VF to known e...

Страница 47: ...ating Alkaline Cells 7 hrs top brands NiMH NiCd 7 3 hrs on a full charge Backlight use will reduce operating time AC Power 100 240VAC 50 60 Hz DC Power 13 2 VDC minimum Physical Size 8 5 216mm x 4 3 1...

Страница 48: ...bel for item ID and locating Transportation ATA 300 Category 1 rated Size 18 1 x 13 7 x 6 9 inches 48 x 35 x 18cm Weight 11 5lbs 5 2Kg with TDR and all accessories Environmental Ambient Pressure Equal...

Страница 49: ...in the Operating Manual s Appendices are Appendix B Wiring Guides showing ANSI TIA Category and ISO Category wiring standards for twisted pair cabling systems USOC s Teleco standards and 10Base T sta...

Страница 50: ...44 User Notes...

Страница 51: ...45...

Страница 52: ...46 5933 Sea Lion Place Suite 112 Carlsbad CA 92010 Tel 1 800 258 7805 or 1 760 931 8979 Fax 1 760 931 8969 www aeatechnology com...

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