4 Check Out Procedure
Check Out Procedure
4.1 Introduction
To ensure proper operation of the VM-810/VM-850 Line Tracer, use the checkout
procedure below at the following times:
•
Upon receiving the equipment
•
Before each job, preferably before you leave for the site
•
If problems arise during a locate
Checkout Steps:
1. Turn the transmitter ON by pressing the ON/OFF button.
2. The LED indicators will illuminate indicating that the transmitter is active.
3. Fully extend the receiver antenna by loosening the nut on the stem assembly and
extending the stem as far as possible.
4. Switch the receiver on by pressing the ON/OFF button. Check that there is at least
25% battery life.
5. Position the receiver as shown in below. The digital signal strength indicator
should display 950 or above.
Position of the Receiver for Checkout Procedure, Step 6
6. Now move the receiver back from the transmitter 3-6ft (
1-2m
). Point the receiver at
the transmitter as shown above, the Left/Right Guidance needle will be centered
on the meter and the tone will be silent. Note that the “Line Direction” indicator
should be pointing directly at the transmitter.
7. Point the receiver to the left and right of the transmitter centerline. The needle
should follow the change in direction (solid arrow and continuous tone when you
move right, broken arrow and broken tone when you move left).
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