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Related Manuals for technoac TDR-TA3.3T
Summary of Contents for technoac TDR-TA3.3T
- Page 1 Cable fault locator TDR-TA3.3T USER MANUAL...
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Page 2: Table Of Contents
Cable fault locator ________________________________________________________________________ Contents Introduction ......................... 4 Device application area and its distinction from a previous model TDR-TA3.3T ... 5 Basic technical specifications and characteristics ............6 Devise and delivery set ....................8 The TDR-TA3.3T structure and functioning ..............9 Operation method .................... - Page 3 TDR-TA3.3T Cable fault locator ________________________________________________________________________ Device calibration......................22 10 Transportation and storage ..................23 11 Marking ........................23 12 Acceptance and packaging certificate ................. 24 13 Warranty obligations ....................25 ________________________________________________________________________...
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Page 4: Introduction
Warranty terms do not cover the cases of misuse of the device or use of the device not in accordance with the rules listed in a given UM. UM is intended for acquaintance with the TDR-TA3.3T device and the principle of operation and sets the operating rules, compliance with which maintains the device in constant readiness for action. -
Page 5: Device Application Area And Its Distinction From A Previous Model Tdr-Ta3.3T
definition of nature of damage; display of the measurement results on LED-screen with 320*240 pcs definition; results saving; 1.3 The TDR-TA3.3T is a compact device, intended to operate in field and stationary conditions. Climatic performance type TDR-TA3.3T group 4 GOST 22261 ... -
Page 6: Basic Technical Specifications And Characteristics
TDR-TA3.3T Cable fault locator ________________________________________________________________________ 2 Basic technical specifications and characteristics Distance measurement range (time delay range) from 0 to 4800 m (0-48 µs). Measurement subranges (windows): 30 m, 60 m, 120 m, 240 m, 480 m, 960 m, 2400 m, 4800 m. - Page 7 Agreed resistances range is from 30 to 400 Ohm. Operation mode time set up is not more than 30 sec. Continuous running TDR-TA3.3T from ACC1 battery is not less than 8 hours and depends on the technical condition of battery.
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Page 8: Devise And Delivery Set
TDR-TA3.3T Cable fault locator ________________________________________________________________________ Product and delivery set The TDR-TA3.3T delivery set consists of: domain reflectometer TDR-TA3.3T - 1 item connecting cable - 1 item Ni-Mh AA battery 1,2 W 2700 А*Hr - 4 items charger - 1 item ... -
Page 9: The Tdr-Ta3.3T Structure And Functioning
TDR-TA3.3T Cable fault locator ________________________________________________________________________ 4 The TDR-TA3.3T structure and functioning 4.1 Operating principle The device operating principle implements the method of pulse-refletometry that is based on the phenomenon of partial reflection of electromagnetic waves in places of change of circuit wave impedance. When measured by the impulse method, the rectangular probe pulse is being sent to the line. - Page 10 TDR-TA3.3T Cable fault locator ________________________________________________________________________ neighbor cable etc.). TDR method allows to fix multiple irregularities both discrete and lengthy, depending on the ratio of their length and the minimal wavelength of the spectrum of the probe pulse. Table 2 Waveforms of typical irregularities...
- Page 11 The measurement error can be reduced with the alignment of the device with the line via “COORD.”. The TDR-TA3.3T allows to determine the distance automatically (depending on the selected coefficient of shortening). The distance is equivalent to the cursor location on the screen and is being displayed digitally at the bottom of the screen next to the cursor location.
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Page 12: Design
________________________________________________________________________ Design The design of the device is given on the Picture 4-1. Picture 4-1. The TDR-TA3.3T design 4.2 The control and displaying tools (keyboard, grips) location and function. 4.2.1 Power supply The power supply of the device is provided with four built-in batteries AA 1,2 W 2700 A*Hr. - Page 13 4.2.3 The connector LINE is intended to connect the cables in MEASUREMENT mode (see issue 6.3). 4.2.4 A “COORD”. grip is used only in the MEASUREMENT mode for the TDR-TA3.3T output resistance and the wave resistance of the researched cable coordination. The minimal magnitude of the amplitude of multiple resampled signals is the most appropriate coordination criterion.
- Page 14 TDR-TA3.3T Cable fault locator ________________________________________________________________________ length, to adjust the window (subrange) dimensions and the coefficient of shortening. By pressing the « » button the user can uninterruptedly reduce the amplification (displacement, coefficient of shortening, window, length of pulse). The current parameters values are showed on the display.
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Page 15: Security Measures
the indicator of setting the cursor from current position to zero distance (symbol - 5 Safety measures Only users acquainted with the given Manual are allowed to operate TDR-TA3.3T The TDR-TA3.3T has no life-threatening voltage The staff operating on different tracks is obliged to follow the safety rules of each track. -
Page 16: Measuring The Length Of The Researched Line
TDR-TA3.3T Cable fault locator ________________________________________________________________________ CAUTION: it is necessary to be sure that the device security indicator « » is blinking (security is on) before connection to the line; FORBIDDEN: to run the measurements on the lines under electric voltage. -
Page 17: Measuring The Coefficient Of Line Shortening At Its Known Length
select the coefficient of shortening value from 1,00 to 3,00 with the pitch 0,01. 6.4.6 Coordination setting-up: Use the COORD. grip to coordinate the TDR-TA3.3T output resistance and wave resistance of the researched cable. The minimal magnitude of the amplitude of multiple resampled signals is the most appropriate coordination criterion. -
Page 18: Measuring The Distance To The Irregularity Of The Researched Line
TDR-TA3.3T Cable fault locator ________________________________________________________________________ Measurement of the distance to the researched line irregularity 6.6.1 The distance to the researched line irregularity to be measured according to the method in issue 5.4. 6.6.2 The type of irregularity of the researched line to be defined according to the Table 2 and issue 2 of a given User Manual. - Page 19 TDR-TA3.3T Cable fault locator ________________________________________________________________________ from the end of a cable. The reflected pulse in the cursor position 1 of a negative polarity denotes the short circuit in the cable line. There is no reflected pulse from the end of cable.
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Page 20: Setting-Up Of The Distance Reference Point
TDR-TA3.3T Cable fault locator ________________________________________________________________________ 6.7.4 The determination of distance to a parallel tap The irregularity connected with the cable taps is also extended. By the waveform view the tap reminds of cable clogging. The difference is that the tap looks like uniform section. -
Page 21: Manipulation With A Nonvolatile Device Memory
“To memory” – saving of a current waveform to the memory. 6.11 Battery control Battery control in the TDR-TA3.3T is carried out according to a pictograph in the top right corner of the display: the symbol «... -
Page 22: Technical Support
The use of aggressive chemical substances (petrol, acetone, paint thinner) is strictly prohibited. As a power source for the device TDR-TA3.3T are used 4 batteries AA with rated voltage 1,2 W and capacity 2700 mA/hr. These batteries of are sealed and maintenance- free for the entire service life. -
Page 23: Transportation And Storage
- the name of the device – TDR-TA3.3T; - factory number; - year of issue. 11.2 The TDR-TA3.3T should be marked with the titles of control tools (keyboard, grips). 11.3 Marking of the TDR-TA3.3T should be done according to the design documentation. ________________________________________________________________________... -
Page 24: Acceptance And Packaging Certificate
TDR-TA3.3T Cable fault locator ________________________________________________________________________ Acceptance and Packaging certificate Cable fault locator TDR-TA3.3T, serial number ___________ meets specifications and recognized serviceable and found fit for use. Release date "____"______________ 20___ year The company representative __________________ _______________________ (signature) ( name) Cable fault locator TDR-TA3.3T, serial number ___________ packed by manufacturer in accordance with the packaging and conservation instructions. -
Page 25: Warranty Obligations
Customer fulfills the usage, transport and storage conditions, set in the present User’s Manual. 13.2 The warranty period is 12 months from the date of TDR-TA3.3T in operation, but no more than 18 months from the date of manufacture.
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