BUCHI ELS Detector C-650 - Manual (Page 30)

C-650 Operation Manual, Version B 5 Putting into operation 30
Noise Filter/Pressure unit screen
Filter: 1 s
Press Unit: bar
Fig 5.18: Noise Filter/Pressure unit screen
The Filter/Pressure Unit screen is used to indicate if digital filtering is desired for the signal data
(improves signal-to-noise ratio) and the desired units for the pressure display.
When the screen is presented, the cursor is on the Filter field. By pressing or keys, you
change the filtering strength within the following range:
“NO”: no filtering.
0.5 s: 0.5 second moving average filtering.
1…10 s: 1 to 10 seconds moving average filtering.
NOTE
For better results, the digital Filter should be used unless the peak(s) of interest are very poorly
resolved (e.g. when Rs<1.5).
Default value is 1 sec., corresponding to a peak width of approximately 2 sec. at half-height. User
manual section 6.4.5 details Filter optimization.
If you have changed the value, press to validate it before you press the button to access
the Press Unit line. The pressure unit line allows for the selection of kPa, bar or psi for pressure
units, the desired selection is made via the
or key, and validated by the key. When you
press the button, the LED screen (Fig 5.19) will be displayed.
LED screen
LED: ON #H
Time elapsed: xx h
Fig 5.19: LED screen
The LED screen is used to turn the light source On/Off and is equivalent to the Light Source but-
ton on the control panel. Use the
button followed by the button to turn the LED on and the