CD42 Pipeline Pig Location & Tracking System
Page 15
Chapter 3 - The Receiver
Overview
The CD42-R receiver is responsible for simply and accurately displaying the pulses of transmitters to
the operator. CDI has invested many hours of design and refinement into the receiver, and the process
continues daily. Since the CD42-R is essentially a computer system, software upgrades are possible,
and do occur occasionally to add a new feature or repair small bugs in the system. Some of our best
feature additions have come from listening to the feedback of our customers, so if you have a feature
request or a bug report, please don‟t hesitate to contact CDI at the numbers listed on the title page of
this manual.
Screen Blanking
The CD42-R receiver, like many computers, has the ability to shut down its display during periods of
inactivity. The CD42-R screen blanks after a period of five minutes, which conserves energy and
allows the unit to run even longer on its standard set of 5 D-Cell batteries. When the screen blanker has
been activated the unit will look as though it is off, but rest assured that it is not. To bring the unit out
of screen blank mode, simply press any single button on the faceplate. When the screen is blanked,
pressing a button will have no effect other than to turn the display on, so it is unimportant which button
you press. In other words, if you press the SETUP button to bring the unit out of screen blank mode,
you will not go into the SETUP menu. You would have to press SETUP twice to do so: once to end the
screen blanking mode, and once to actually enter the SETUP menu.
If the unit has been set up to record pig passages, it will still do so even though the screen has gone
blank. When the pig is detected and a recording begins, the unit will automatically bring itself out of
the screen blank mode, including turning on the back light.
Main Operation Screen
The CD42‟s major feature is its large graphics liquid crystal display (LCD). This display is used to
show the pulses of magnetic transmitters to the operator of the equipment. The height of the pulses
indicates how close the transmitter is to the receiving antenna. Figure 14 is a CD42-R receiver with a
cable and antenna attached, ready to receive transmitter signals.
Figure 14 The CD42-R Attached to the CD42-GP and ready for action.
