Waters 2489, Обзор и руководство по обслуживанию

Страница: 120 / 150

June 11, 2015, 715004752 Rev. A
Page 120
To generate test peaks:
1. From the Other diagnostics choice list, press 1 (Generate test peaks) to
generate test peaks every 100 seconds on the chart, trace, or other output.
Restriction:
The Generate test peaks diagnostic test works only in
single-wavelength mode.
Every 100 seconds, the detector generates an approximate 1-AU peak with a
standard deviation of 10 seconds on the trace, chart, or data system display
until you disable the Generate test peaks diagnostic test. The amplitude of the
test peaks is affected by your choice of filter time constant.
This is a sticky diagnostic test. When this routine is selected, the choice list
changes to read “Disable test peaks.”
2. Press 1 (Disable test peaks) from the Other diagnostics choice list to turn off
this diagnostic test.
To override the optical filter:
1. From the Other diagnostics choice list, press 2 (Optical filter override) to
manually override the detector’s automatic filter choice.
Figure 5–12: Optical Filter Override diagnostic test display
2. In the Optical Filter Override diagnostic test display, press Enter to display the
following filter choice list.
Tip:
The detector normally operates with the filter in the Automatic position.
This is a sticky diagnostic test.
3. Press the number corresponding to your filter choice, or leave the default filter
choice (Automatic) on.
4. To deactivate this diagnostic test, press DIAG, and then press 1, or select
Automatic from the choice list.
5.2.3 Service diagnostic tests
Only qualified Waters service personnel can access the detector service diagnostic
tests.
Automatic 1
Second Order 2
None 3
Erbium 4
Shutter 5