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3.2. 3002RS SYSTEM FUNCTION TEST
At least 24 hours prior to deployment any personnel who are going to be involved in the
operation of the system should review this entire manual and be given time to practice
operating the transmitter and receiver system. By familiarizing themselves with the system
prior to deployment the chances of a potentially costly operator error are greatly reduced.
The function test assumes that the system has already been configured as per section 4.1
3002RS ROV SYSTEM DECK TEST or as per section 4.2 3002RS ROV SYSTEM INSTALLATION.
1.
Connect the headphones to the 3002RS. Ensure the antenna is stationary and separated
by at least 0.5m from the 3011 EM POD and 3002RS.
2.
Switch ON the 3002RS by turning the SENSITIVITY & ON/OFF control clockwise until the
control 'clicks' and the display activates. Turn the SENSITIVITY & ON/OFF control to
approximately half scale. Ensure that the mode toggle switch on the front of the 3002RS is
in the 'RS232' position.
3.
Press and hold the BATTERY TEST / RESET button. If the bargraph shows less than 50%
then the batteries should be replaced as per section 5 3002RS BATTERY TEST AND
REPLACEMENT.
4.
With no transmitter activated confirm that the signal indicated on the bargraph is less than
30% (assuming that the receiver is in a typical, electrically quiet, environment). If more
than 30% signal is received then it indicates that there is a source of 22Hz electrical noise
nearby and the sensitivity of the receiver may need to be reduced or the antenna moved
away from the source. Ensure that the antenna is at least 0.5m from the 3002RS.
5.
Gently bump the antenna. This should cause peaks in the received signal and gives a basic
confirmation that the equipment is functional.
6.
Pick up the antenna and gently shake it. This should cause peaks in the received signal
due to the antenna picking up its own movement within earth's magnetic field. For this
reason NEVER wave the antenna around while trying to detect a pig. This is normal and is
a side effect of using magnetics for pig location and tracking.
7.
If available a 22Hz test transmitter should always be used to confirm
full functionality. Activate the test transmitter set to pulsing mode and
orientate parallel to the antenna as shown separated by approximately
5m in air. Orientating the antenna parallel to the transmitter will
provide the largest signal and should be used for approximate
transmitter location as per section 3.4 APPROXIMATE TRANSMITTER
LOCATION. Vary the sensitivity of the 3002RS receiver to achieve the
cleanest signal and confirm that the pulse rate is as expected. Note that
more sensitivity is not always best, if there is significant background
noise and the sensitivity is too high then the transmitter signal may be hidden by the
background noise. Note that the signal decreases if the antenna is moved away from the
transmitter in any direction and increases if the antenna is moved towards the transmitter.
8.
With
the
antenna
approximately
sensitivity to achieve approximately 50% deflection on the
bargraph. Turn the antenna 90° so that it is perpendicular
to the transmitter as shown. In this orientation there
should be a null spot where very little signal is received
when the antenna is pointing at the centre of the
transmitter but moving just a few centimetres ahead or
behind this point will cause a relatively large and sudden
increase in signal.
3002RS_5002_A01
and
transmitter
5m
apart
in
air
parallel
and
adjust
the
3002RS
Page 7 of 17
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