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13 Detector
13.5 Setting the Output Signals
13.5.2 Background compensation
If the baseline fluctuates considerably during programmed analysis, the baseline fluctuation
can be saved as a background baseline by the GC. After wards, the background is subtracked from the baseline. (background compensation).
This section describes how to save the background baseline and perform background compensation
(1) Setting the signal output channel
On the [DET] key main screen, set “SIGNAL OUTPUT PORT” from “Off” to Channel 14. (“Ch3” and “Ch4” for analog signal are available optionally.)
(2) Background storage setup
On the [DET] key main screen, set “BACKGROUND SIG. SAVE” from “Off” to “Buff 1”
(or “Buff 2”) to save the background baseline.
(3) Saving the background baseline
Without making an injection, press the [START] key on the gas chromatograph to
execute analysis. The background baseline is saved.
(4) Background compensation settings
On the [DET] key main screen, set “BACKGROUND SIG. COMP.” from “No” to “Buff 1”
(or “Buff 2”) the same selectio from in “BACKGRND SAVE”.
(5) Analysis
Make an injection, and press the [START] key to execute analysis. Because
background compensation is in efffect, large baseline fluctuations are now eliminated.
GC-2010
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