For all units released after 2014. If your instrument differs significantly from this guide then please use the guide supplied with your instrument or call technical services for advice.
NOTE - THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSONS
Users of this equipment and/or their employers are reminded that National Health and Safety Legislation requires
them to carry out valid risk assessments of all works so as to identify potential sources of danger and risk.
Please refer to the full list of safety warnings for further information. This was supplied in the box your instrument
arrived in or can also be found on the support CD and is downloadable from the Megger website.
CAT II
Measurement category II: Equipment connected between the electrical outlets and the user’s equipment.
CAT III
Measurement category III: Equipment connected between the distribution panel and the electrical outlets.
CAT IV
Measurement category IV: Equipment connected between the origin of the low-voltage mains supply and the
distribution panel.
Measurement equipment may be safely connected to circuits at the marked rating or lower.
1.1 Battery information
This instrument runs on a Lithium Ion battery which should be maintained to maximise health, reliability and
longevity. There are a few simple things that you can do to help maintain your battery health and power potential.
1. Allow your battery to charge fully before using the instrument. Fully charging the battery before use will
ensure it can perform at peak performance and make maintaining performance easier.
2. Keep your battery charged up whenever possible while in use. A Li-Ion battery prefers frequent top-ups and
should never be left in a flat state for extended periods as this can cause permanent damage.
3. Maintain a charge during storage. If your battery is to be stored for extended periods maintain a charge of
40%, allowing for some discharge and maintaining the protection circuit.
4. Store your battery in a cool, dry place. Li-ion batteries can get stressed when exposed to heat which can
reduce its life. Do not store above 30°C (86°F) for extended periods.
1.2 WEEE Directive
The crossed out wheeled bin symbol placed on Megger products is a reminder not to dispose of the product at the
end of its life with general waste.
Megger is registered in the UK as a Producer of Electrical and Electronic Equipment. The Registration No is WEE/
HE0146QT.
For further information about disposal of the product consult your local Megger company or distributor or visit your
local Megger website.
1.3 Battery disposal
The crossed out wheeled bin symbol placed on the batteries is a reminder not to dispose of them with general waste
at the end of their life.
The TDR2000 series can be set up to work for several different applications. This will allow the user to specify how
the instrument receives, processes and displays test readings. The testing options for each mode are shown on the
line adjacent to the icon for the specific mode.
6.1 Selecting Mode
Change modePress to selectUse cursor keys
6.2 Choosing a mode
Single Channel modeChoose T1 or T2Press key indicated to
General functions are available from the main screen and be accessed using the left and right navigation keys and
appropriate selection buttons.
The instrument is also able to save and preview traces, enabling the user to maintain a database of information for
downloading to a PC to create reports or to use in other custom applications.
NavigationUse cursor keysUse soft keys to select
Range 10 m min to 20 km max in 11 steps (30 - 60,000 ft)
The currently selected range is shown at top right of the screen
7.1 Operational state
The current operational state is shown at the top left of the screen and identifies the current operational setting for
the chosen screen. Icons displayed are specific to the function.
Current operational
state. Currently in
Manual operation
Current operational
state. Currently in Setup
operation
The user has the ability to change various settings for the live trace ranging from the velocity factor to the gain
applied to the trace. These settings can be accessed via the setup icon.
8.1 Accessing Setup
Press to selectAutomatic modeManual mode
8.2 Adjusting the Setup Options
Velocity FactorUse the up and down cursors to set the Velocity
Factor to match the cable under test.
ImpedanceUse the up and down cursors to adjust the
impedance for the cable under test.
*Only available in manual operation (see page 13).
GainUse the up and down cursors to alter the gain to
adjust visible disturbances on trace.
*Only available in manual operation (see page 13).
Trace Tagging is only available on the TDR2010 and TDR2050 models. Trace Tagging allows the user to add
a name to all saved traces. This could be the circuit ID, building name or any other identifying text the user
wishes to save with the trace.
A text string of up to 32 alphanumeric characters can be stored against each trace and this can consist of
upper case letters including accents.
This function is activated
when choosing a
memory location to save
a trace to
You can also press the
OK button to accept the
selection
Use the navigation
buttons to select a letter
and the soft keys to
action
Press the shift icon to
change the keyboard to
the extended characters
Press the hand icon
to add the currently
selected character
Press the backspace
icon to delete the last
character
Once all characters have been chosen, press the save
icon to complete the save process
TDR2050 has a suite of trace tools which provide additional test capabilities. These can be found in the Trace Tools
menu item.
Press to access Trace
Tools
Choose required
function
10.1 Standard trace function
The standard trace function allows the instrument to be set up to work as a standard pulse TDR. This function should
be chosen to turn off other trace functions.
Standard trace functionChange settings as
required
Press to choose another
trace function
10.2 AutoFind
AutoFind allows the automatic detection of disturbances along the result trace, making it easier to target
disturbances amongst a noisy trace.
On TDR2000/3 and TDR2010 this function is available from the main screen.
DDG counteracts the effects of signal loss on a cable by gradually increasing the gain along the trace result. DDG is
suitable for longer length cables and is available on ranges of 1000m and above.
Distance dependent
gain
10.4.1 Step TDR feature
The injected signal is started and then maintained at the same level giving a constant signal. The receiver is also
constantly set to receive any reflections. This function is ideal for near-end testing as it is more sensitive than a Pulse
TDR due to the constant signal. The Step TDR function is only suitable for shorter length cables and is available on
ranges up to and including 500m.
The TDR2000 series have two methods of operation. Both options allow the user to set operational parameters.
In Manual operation the user has full control over the settings in use for the cable under test. In Automatic
operation the TDR sets the appropriate impedance to the cable and suggests gain and pulse width settings. Expert
Function allows auto detection of faults on the live traces.
12.1 Manual and Automatic operation
Manual/AutomaticPress to swap modesChanges with each
press
ManualAdjustable in this mode
AutomaticAdjustable in this mode
NOTE: Auto in DDG only performs AutoZ; not ‘auto settings’
The TDR2000 series have built in intelligent charge management technology so that the maximum charge rate is
maintained, meaning a longer battery life is possible.
The cursor lines on the TDR2000 series allow the user to identify disturbances at strategic points to determine
distances and positions of potential faults on the trace.
14.1 Cursors and measurements
Cursor choicePress to selectSwap between cursors
Cursor movement
C1-C2 Trace 1
(Single Trace Mode)
C3-C4 Trace 2
(Dual Trace Mode)
Distance measurementDistance to cursorDelta measurement
When in the Setup screen, access can be made to a selection of user tools. Within the tools function the user can
change basic settings and locate current instrument setup information.
Adjustable setting include Volume, Standby, Units of measure, NVP formats, Colour scheme, Brightness and
Language.
Once finished setting
your colours, press
either the custom 1
or custom 2 icons to
save that scheme. The
scheme currently stored
in that custom slot will
be overwritten.
After saving your
custom scheme, press
the back button to
return to the main
screen
Except where otherwise stated, this specification applies at an ambient temperature of 20ºC
20.1 General
SpecficationDetail
RangeUp to 20000m with a minimum resolution of 0.1m
(Maximum range dependent on cable type)
Accuracy±1% of range ± 1 pixel at 0.67 VF
Note- The measurement accuracy is for the indicated cursor position only and is conditional on the velocity
factor being correct
Resolution1% of range
Input ProtectionThis instrument complies with IEC61010-1 to protect the user in the event of
connection to live systems. TDR2050 is rated at 600 V CAT IV whilst all other
models are rated at 150 V CAT IV. TDR2050 is specifically designed to allow
use on energised systems up to the rated voltage.
All other models are designed for use on de-energised systems and Megger
fused leads must be used on power cables.
Output pulseUp to 20 volts peak to peak into open circuit. Pulse widths determined by
range, cable and model used.
GainSet for each range with user selectable steps (in Manual operating mode)
Velocity FactorVariable from 0.2 to 0.99 in steps of 0.01
TX NullAutomatic mode
Trace Tagging 32 alphanumeric characters chosen from upper case letters including
If the protection of an instrument has been impaired it should not be used, but sent for repair by suitably trained and
qualified personnel. The protection is likely to be impaired if, for example, the instrument shows visible damage, fails
to perform the intended measurements, has been subjected to prolonged storage under unfavourable conditions, or
has been exposed to severe transport stresses.
These products contain no user repairable parts and if defective should be returned to your supplier in original
packaging or packed so that it is protected from damage during transit. Damage in transit is not covered by this
warranty and replacement/repair is chargeable.
Megger warrants this instrument to be free from defects in materials and workmanship, where the equipment
is used for its proper purpose. The warranty is limited to making good this instrument (which shall be returned
intact, carriage paid, and on examination shall disclose to their satisfaction to have been defective as claimed). Any
unauthorised prior repair or adjustment will invalidate the warranty. Misuse of the instrument, from connection
to excessive voltages, fitting incorrect fuses, or by other misuse is excluded from the warranty. The instrument
calibration is warranted for one year.
This Warranty does not affect your statutory rights under any applicable law in force, or your contractual rights
arising from a sale and purchase contract for the product. You may assert your rights at your sole discretion
For service requirements for Megger Instruments contact Megger or your local distributor or authorised repair centre.
Megger operates fully traceable calibration and repair facilities, ensuring your instrument continues to provide the
high standard of performance and workmanship you expect. These facilities are complemented by a worldwide
network of approved repair and calibration companies to offer excellent in-service care for your Megger products.
See the back of this user guide for Megger contact details.
Hereby, Megger Instruments Limited declares that radio equipment manufactured by Megger Instruments Limited
described in this user guide is in compliance with Directive 2014/53/EU. Other equipment manufactured by Megger
Instruments Limited described in this user guide is in compliance with Directives 2014/30/EU and 2014/35/EU where
they apply.