Superior Signal Company LLC
AccuTrak
®
VPX-WR
User’s Manual
© 2015
6
Setting the control at 10 sets the instrument at maximum sensitivity and lowest rejection of
noise/unwanted leaks, where at the other end is at the opposite.
When you first walk in an unknown area set the control at 10 and listen. If there is a lot of
background sound in the headset point the VPX-WR in another direction. If the sound
stays the same, turn the control to the left, while you are pointing the instrument in the
same direction as before and listen until the sound disappears. You have now set the
DND at the level above the area noise. As you approach leaks now, which are stronger
than the background noise, the DND will turn on and indicate them while the Het. is always
indicating the background noise.
Leave the vinyl protector on the horn to protect the edge from becoming deformed when
bumping it. This may save the horn threads if you drop it.
Do not abuse the control knob in any way, there is a spring loaded seal at the rear cap of
the instrument to prevent contaminants from entering the housing and it can deform when
abused.
When not in use cover the headset and charger plugs with their orange covers. The
covers protect the connectors from contaminants.
To clean the horn and the threads you can use a shop cloth with a little alcohol or glass
cleaner. Lubricate the threads and the horn after cleaning with silicon grease. Be very
gentle with the sensor.
Similarly clean the Nose Cone and its threads. Inspect the O-Ring for cracks. If the O-Ring
is cracked order one from Superior Signal or buy one locally. The O-ring part number is a
Parker # 2-025, 70 durometer.
