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April 2004
9-32 Servicing the PT878GC
Setting Error Limits
The Error Limits option enables you to set limits for an incoming
signal. When the signal falls outside the programmed limits, an
error indication appears. To enter this option, scroll to the Error
Limits entry on the Service Menu and press
[ENTER]. The screen
appears similar to Figure 9-19 below.
Figure 9-19: The Signal Error Limits Option
1. The first prompt asks for the minimum and maximum limits
for the transducer signal received by the PT878GC. The
default values are 10 for the minimum and 72 for the
maximum. The E1: LOW SIGNAL error message appears if
the signal strength falls below the limit programmed here.
To enter the minimum signal:
a. Press
[ENTER] to open the text box.
b. Use the numeric keys to enter the desired value.
c. Press
[ENTER] to confirm your entry.
Programming
Signal Error Limits
Cancell
OK
Signal
Sound Speed (±)
Amplitude
Velocity -22.56
m/s
Min
Max
10
72
14 34
%
20
Acceleration
m/s
4.572
22.56