White’s Electronics TDI - Manual (Page 17)

PulseScan TDI Owner’s Guide 7
PULSE DELAY -
What it is
The Pulsescan TDI transmits a pulse and then after a time delay, samples the
received signal. This is the control knob for adjusting the sample pulse delay. It
alters the time between the end of each transmitter pulse, and the start of the
receiver sampling period.
How to use it
PULSE DELAY is measured in micro seconds (uS). 10 uS is the lowest setting,
which samples as close as possible to end of the transmitter pulse. This setting
gives the highest sensitivity to all objects regardless of conductivity. However,
raising the pulse delay toward 25 uS is used to maximize the signal to high-
conductive metals such as silver or larger targets by supressing the signal from
low conductivity targets. This setting can be set anywhere between 10 uS and 25
uS depending on the circumstances to enhance performance.
If you wish to concentrate on detecting low-conductive targets you would
want to set your Pulse Delay as close to 10 uS as possible to avoid reducing or
losing the signal from your target. Low-conductive targets would include small to