CD42 Pipeline Pig Location & Tracking System
Page 44
View Transmitter Signal
The View Transmitter Signal option allows a PC computer running a terminal emulation program
such as HyperTerminal to directly watch a real-time display of receiver coil input signals. This has
limited use in the real world, but is occasionally useful for testing purposes. To see the real-time
waveform display, simply highlight the View Transmitter Signal menu item and press ENTER. The
CD42-R will prompt you with " Vertical display of antenna input. Press ENTER to start, any key
quits." Once you begin watching the waveform, it is important to remember that any key will quit
the operation, as no other prompting will occur. A sample of the vertical real-time waveform output
is shown in Figure 67.
Figure 67 Serial Interface Antenna Signal Assembly
In this image (Figure 67) we see the transmitter pulses being displayed vertically instead of
horizontally as the CD42-R‟s system LCD display does. This is simply because of the limitations of
the serial interface. This image does
not
scroll from the right to the left, but instead scrolls from the
bottom toward the top.
