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The vLocPro receiver must be used in a different orientation when locating a Sonde – due to the
way the signal from the Sonde radiates. With the front of the receiver pointing across suspected
direction of the Sonde – pinpoint forward and backward (across the Sonde) and then move along
the line of the Sonde until the maximum peak is located (in other words rotate the receiver 90
degrees from the orientation normally used when locating pipes and cables).
A Sonde is typically used for locating non metallic pipes or ducts, and the camera end of a sewer
inspection camera. Low frequency versions (512 Hz/640 Hz) can transmit through some metallic
pipes such as cast iron pipes – which are why they are frequently used with sewer inspection
cameras.
For using the compass feature to locate Sondes, please refer to 7.1.3.
3.4 Display
These responses are shown on the display as
● Moving Bar graph
● Numeric value & db value
● Directional arrows (with ‘Null’ response)
● A range of different display modes will be available in 2009
3.5 Audio
The visual display is also accompanied by an audio response. The output level (volume) of this
response is set by entering the “Setup menu”. Press and hold “i” pushbutton for two seconds to
enter setup menu. The setup display defaults to volume. Use the “Mode” pushbutton to toggle
through the available options (off – low – med – high). Press the “i” pushbutton again to exit
the setup menu. As the loudspeaker uses a significant amount of power, using lower volume can
make the battery life of the receiver last longer.
Bargraph
Numeric
Arrows
30 dB 512 Hz
3’7’’
69.5
30 dB 512 Hz
3’7’’
69.5
30 dB 512 Hz
69.5
3’7’’
3 vLocPro Receiver
