GE DigitalFlow GC868 Programming Manual page 40

Setting Signal Limits
(cont.)
Programming Site Data
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18.Press to accept the current # Transmit Pulses value or enter a
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new value and press
IMPORTANT:
Consult the factory before performing this step.
# Transmit Pulses
specifies the number of pulses in a burst. The
default value for this parameter is 1 and values from 1 to 16 are
acceptable. For difficult conditions (i.e., long paths, high velocity or
high temperature), settings as high as 16 may be necessary.
[ENT]
19.Press to accept the current T Window (Cycles) value or enter
a new value and press
IMPORTANT:
Consult the factory before performing this step.
Normally, the Model GC868 calculates the size of the transmit
window based on pipe size and fluid sound speed. However, for
special diagnostic purposes, it may sometimes be necessary to reset
the window size. The default value for this parameter is 0 and values
from 0 to 1,000 are acceptable. If you select 0 or 1, the GC868 applies
automated calculation, and the following prompt does not appear.
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20.Press to accept the current R WINDOW (cycles) value or
enter a new value and press
IMPORTANT:
Consult the factory before performing this step.
Normally, the Model GC868 calculates the size of the receive
window based on pipe size and fluid sound speed. However, for
special diagnostic purposes, it may sometimes be necessary to reset
the window size. The default value for this parameter is 10 and values
from 10 to 128 are acceptable.
After completing these steps, the program returns to the
window. Table 1-7 on the next page lists the default values and limits
for SETUP parameters.
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April 2008
SETUP
1-31