GE PT878GC Manual De Usuario

April 2004

Displaying the Receive Signal in Graphical Format

Used chiefly for diagnostic purposes, the Graph option helps to 
determine why the thickness gauge is not working if you suspect 
a problem. The graph shows an image of the acoustic signal. If 
the display does not show a signal image similar to Figure 9-7 
below, you may have a problem with the transducer, couplant, or 

the programmed values. Also, some materials (such as Teflon

® 

or 

fiberglass) do not support acoustic signals.

To open the Graph window and display the receive signal 
graphically, press the [

W

 ] or [

X

] arrow key until you reach the 

Graph tab and press 

[ENTER]

. The screen appears similar to 

Figure 9-7 below.

Press 

[F2]

 (Cancel) or 

[F3]

 (OK) to return to Operate Mode, or 

press the  [

X

] arrow key to move to another window in the 

option. However, if you wish to adjust the graph, press the [

T

] 

key. The screen now appears similar to Figure 9-8 on the next 
page.

Display

Cancel

l

OK

Velocity

Graph

Zero

Material