GE PT878GC User Manual download pdf (Page 241)

April 2004

9-40 Servicing the PT878GC

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

to a PC.

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

from a PC to the PT878GC.

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GE PT878GC User Manual Page 241