1. Peter Dennis – Dover PPM Communications
TDR2000/3 & TDR2000/3P Handheld time domain reflectometers Clear guidance for cable fault location
Peter Dennis – Dover PPM Communications

2. TDR – Time Domain Reflectometer
Identify cable faults, distance to fault and length of cable.
In using a TDR you are not only capable of identifying faults on the cable but also find the distance to the fault. By simply entering the cable's length or velocity factor you can find and locate cable faults up to 20km or more on compatible instruments
Current Models
TDR500/3
TDR1000/3
TDR1000/3P

3. TDR Overview TDRs locate and identify faults on metallic paired cable
TDRs look for a change in impedance on the cable
Cable damage, water ingress, taps and slices, flaws, etc.
Used in Electrical, telephone and CATV industries.
Provide information on cable status much faster than other methods
A pulse of energy is transmitted down a cable
When the pulse reaches the end of the cable, or a fault, part of the energy is reflected back
The reflected pulse can identify the nature and location of the fault

4. Product Uses
TDRs are typically used to find existing faults on cables but also have more applications in related areas such as:
Defining and proving a cable installation
Establishing a benchmark for future comparison
Cable length measurement (installed and on drum)
Locate and evaluate events such as splices and joints
Detect and identify ingress faults such as water
Detect and measure distance to cable taps
Detect and isolate Load Coils on Telephone lines

5. Technology Well proven Long used technology
Electrical, telephone and CATV industries.
Increasing in use
Provide information on cable status much faster than other methods.
Some industry commentators suggest that a TDR will be built into many instruments in the future

6. The New Megger TDR2000/3 Auto Set Up Instant use Fast 2 ns Pulse
Near end fault identification
Long Reach
20 km maximum range
Simple Operation
Menu based GUI with soft keys
Trace hold feature
On screen trace comparison
High Definition Display
View screen in all light conditions

7. Key Product Features – TDR2000/3
Dual trace display with dual cursor and delta measurement
10m – 20000m ranges in 11 steps
2ns fast pulse to allow resolution of close in faults
Trace hold with live Trace Overlay feature
Xpert function for automatic fault location on trace
Cable Impedance; 25, 50, 75, 100, 125 ohm and Auto
Last setting ‘memory’
Inbuilt blocking filter
12 hr Battery life
IP54 ingress protection
Safety CATIII 300V (CAT IV 150V)

8. Key Product Features – TDR2000/3
High Clarity Display
Aids definition of point of fault
Dual Cursor
With tagged cursor position
Resolution to 0.1 m
Fast & accurate fault location
2ns Pulse
Allowing near end visibility

9. Key Product Features – TDR1000/3
AUTO
Easy set up
HOLD
Allows trace hold on screen
Live trace overlay on Hold
Additional Modes
Control pulse, gain, VOP and impedance
Input Protection
Cat III up to 300 Volts
Cat IV up to 150 Volts
TNV-3 systems

10. What’s in the box? TDR2000/3 TDR2000/3P CFL535G
Test Lead Set (model dependent)
Supplied CD with Manual
Lithium Ion rechargeable battery pack (fitted)
Carry Case with strap
Mains battery charger
Connectivity pack (USB cable, push on F-Type connectors)

11. Models, Spares and Accessories (correct as at 23/06/2013)
TDR2000/3
Time Domain Reflectometer
TDR2000/3P
Time Domain Reflectometer with fused test leads
CFL535G
US version of TDR2000/3 with Bed-Of-Nails lead set
Accessories
Single miniature clip lead set 4mm
Optional accessory
Dual miniature clip lead set 4mm
Included in TDR2000/3
Single Fused test leads
Dual Fused test leads
Included in P version
Bed-of-Nailss Test Leads (2 Pair)
Included in CFL version
Bed-of-Nails Test Leads (1 Pair)
Terminal adaptor kit – 2 x ea BNC adapter, F-type quick release adapter, F-type to BNC
Carry Case
Included in all models
AC-DC Charger
Lithium Ion Battery
Download kit comprising - User Guide CD, TraceXpert, USB Cable