Programming Site Data
1-27
March 2008
Transit-Time SIGNL Options
(cont.)
8.
Press
[ENT]
to accept the current
Amp. Discrim Low
value or enter
a new value and press
[ENT]
.
The amplitude discriminator measures the size of the transducer
signal received by the Model DF868. The default value for this
parameter is 14 and values from 0 to 100 are acceptable. The
E5:
AMPLITUDE
error message appears when the amplitude discriminator
falls below the programmed
AMP. DISCRIM LOW
value. See the
Service
Manual
for a discussion of error codes.
9.
Press
[ENT]
to accept the current
Amp. Discrim High
value or enter
a new value and press
[ENT]
.
The amplitude discriminator measures the size of the transducer
signal received by the Model DF868. The default value for this
parameter is 34 and values from 0 to 100 are acceptable. The
E5:
AMPLITUDE
error message appears when the amplitude discriminator
exceeds the programmed
AMP. DISCRIM HIGH
value. See the
Service
Manual
for a discussion of error codes.
10.
Press
[ENT]
to accept the current
Delta T Offset
value or enter a
new value and press
[ENT]
.
An offset between the upstream and downstream transit times is
specified at this prompt. The default value for this parameter is 0
μ
sec
and values from –1000 to 1000
μ
sec are acceptable.
11.
Press
[ENT]
to accept the current
% of Peak
value or enter a new
value and press
[ENT]
.
The percentage of peak used to calculate the transit times and Delta T
is specified at this prompt. The default value for this parameter is
50% and values from -100% to 100% are acceptable.
12.
Use the [
→]
and
[F1]-[F4]
keys to select one of the preset values for
the
XMIT Sample Size
from the option bar.
Both the upstream and downstream transducers transmit ultrasonic
pulses in bursts, which consist of a series of transmit pulses.
XMIT
SAMPLE SIZE
determines how many bursts are sent in one direction
before sending in the other direction. The default value for this
parameter is 8 and values of 2, 4, 8, 16 and 32 are acceptable.
13.
Press
[ENT]
to accept the current
# of Errors
value or enter a new
value (0 to 16) and press
[ENT]
.
Use this prompt to enter the number of errors the DF868 can record
before it displays an error message. The default value is 6.
14.
Press
[ENT]
to accept the current
Minimum Peak % Limit
value or
enter a new value and press
[ENT]
.
Use this prompt to enter the minimum percent of peak that the DF868
can use to measure transit time. The DF868 accepts values from
-100 to +100.
Содержание DigitalFlow DF868
Страница 7: ...Chapter 1 ...
Страница 75: ...Chapter 2 ...
Страница 91: ...Chapter 3 ...
Страница 105: ...Chapter 4 ...
Страница 116: ...Chapter 5 ...
Страница 117: ...Clearing Data Introduction 5 1 Clearing Totalized Data 5 2 Deleting Site Files 5 2 Deleting Log Files 5 3 ...
Страница 121: ...Chapter 6 ...
Страница 132: ...Appendix A ...
Страница 142: ...Appendix B ...
Страница 143: ...Data Records Option Cards Installed B 1 Initial Setup Data B 2 ...
Страница 149: ...Appendix C ...
Страница 169: ...Appendix D ...