GE PT878GC Manual De Usuario

April 2004

Setting Impulse Response (cont.)

2. The second prompt asks for the percent of gain.

a. Press 

[ENTER]

 to open the text box.

b. Use the numeric keys to enter the desired percentage.

c. Press 

[ENTER]

 to confirm your entry.

You have completed entering data for the Impulse Response 
option.

Press 

[F1]

 to start transmitting in the chosen direction.

Press 

[F2]

 to stop transmitting.

Press 

[F3]

 to leave the option and return to Operate Mode.

Taking Wave Samples for Diagnosis

The Wave Snapshot option allows you to capture receive signals 
to a file that you can send to a PC for diagnostic purposes. To use 
this option, scroll down to the Wave Snapshot entry in the 
Service Menu and press 

[ENTER]

. The PT878GC then captures 

three pairs of upstream and downstream raw signals to a file 
named Wave01.met. (If you repeat the captures, the successive 
files will be named Wave02.met, Wave03.met, etc.) You can then 
transfer the files over the IR port to a PC for analysis by a service 
engineer. 

Note: Refer to page 6-16 for information on transferring a file 

Applying a Stored Signal for Diagnosis

The Simulate option places the PT878GC in a mode in which it 
uses a stored signal (instead of the live signal from the 
transducers) to make flow calculations for diagnostic purposes. 
On the PC, you must rename a Wavexx.met file as Wave.met and 
send it back to the PT878GC over the IR link. Then, on the 
PT878GC, scroll down to the Simulate entry in the Service Menu 
and press 

[ENTER]

. The PT878GC then applies the simulated 

signal.

Note: Refer to page 6-17 for information on transferring a file