Teledyne 7600 - Infrared gas analyzer - operating manual - Manual (Page 80)

Operation Model 7600
Teledyne Analytical Instruments 80
To modify the average period:
1. Choose the channel or channels you want to modify. You
can set an average time from 1 to 59 minutes in 1-minute
steps or 1 to 4 hours in 1-hour steps.
2. The UP and DOWN keys will increment or decrement
the numerical values while the SIDE key will move the
cursor to the right to the next digit. Press ENT when the
desired value is displayed.
Changing this parameter resets the average value of O
2
correction
and O
2
average value. Pressing the ENT key validates the resetting only
for components whose setting was changed.
Example of average action:
In the example shown in Figure 3-14, the average period was set to
1 hour.
Figure 3-14: Example Average Period
Sampling occurs every 30 seconds so every 30 seconds the average
for the last 1 hour (time setting) is output.
At the instant of resetting, zero is assumed for all past values. This
means that the average value will be incorrect for 1 hour (1 time period)
after resetting.
3.5.7.5 B ACKLIGHT T IMER
Automatic OFF setting of the backlight of the LCD unit can be
adjusted from this menu.
Upon returning to the measurement screen, when the specified time
elapses, the backlight is automatically turned off. During operation,