Megger TDR2000/3 User Manual page 17

Distance dependent gain - DDG
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
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.
Step TDR function activation
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Adjust DDG.
Single press increments by
0.1 dB
Press and hold increments by
0.5 DB
Change settings as for pulse
TDR
Press choose another trace
function
Press choose another trace
function
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