Chapter 1
Feature Summary
1.5 Overview of the Time Averaging Feature
The DG-700 has a choice of 4 time averaging periods which are applied to both measurement channels.
When the gauge is turned on, the default time averaging period is
1 second average
.
To change the
selected time averaging period
, press the
TIME AVG
button. The currently selected time averaging
period is shown in the
TIME AVG
portion of the gauge display.
1.5.a Description of Time Averaging Periods:
-
1 Second Average (1)
– Both measurement channels are updated once per second with the average of the
readings from the previous 1 second. The
1 Second Average
is the default time averaging period when turning
on the gauge, and is the period most commonly used.
-
5 Second Average (5)
– Both measurement channels are updated once every 5 seconds with the average of the
readings from the previous 5 second period. When first activated, the display shows "---" until the first 5 second
measurement buffer has been recorded. The
5 Second Average
should be used when the
1 Second Average
reading is fluctuating more than desired.
-
10 Second Average (10)
– Both measurement channels are updated once every 10 seconds with the average of
the readings from the previous 10 second period. When first activated, the display will show
"---" until the first 10 second measurement buffer has been recorded. The
10 Second Average
mode should be
used when the 5 Second Average reading is fluctuating more than desired.
-
Long Term Average (L)
– Both measurement channels are updated once per second with the running average of
all readings taken after the
Long Term Average
period is activated. When using
Long Term
Average
, the gauge
continuously adds the current measurements to the measurement buffer and displays the average value of all
recorded measurements. The gauge will operate for approximately 2 hours when using
Long
Term Average
before the measurement buffer is overloaded. When the buffer is overloaded, both channel readings will re-start
a new long-term average period.
1.5.b Illustration of Time-Averaging Operation (First 10 seconds of operation):
1 Second Average:
Seconds: 1 2 3 4 5 6 7 8 9 10
Pressure 12 5 10 2 6 15 8 12 2 6
Signal:
Display: 12 5 10 2 6 15 8 12 2 6
5 Second Average:
Seconds: 1 2 3 4 5 6 7 8 9 10
Pressure 12 5 10 2 6 15 8 12 2 6
Signal:
Display: -- -- -- -- 7 7 7 7 7 9
10 Second Average:
Seconds: 1 2 3 4 5 6 7 8 9 10
Pressure 12 5 10 2 6 15 8 12 2 6
Signal:
Display: -- -- -- -- -- -- -- -- -- 8
Long Term Average:
Seconds: 1 2 3 4 5 6 7 8 9 10
Pressure 12 5 10 2 6 15 8 12 2 6
Signal:
Display: 12 9 9 7 7 8 8 9 8 8
1.5.c Resetting the Time Averaging Measurement Buffer:
When using the
5 second
,
10 second
or
Long Term
averages, it is sometimes desirable to reset and
restart the time averaging measurement buffer when an unwanted signal has been recorded during a time
averaging period (e.g. someone steps on the tubing during a
Long Term Average
measurement). To reset
and restart the time averaging measurement buffer for both channels, press the
START
button.
5
Operating Instructions
for the DG700
