updated comment
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@ -489,9 +489,11 @@ static int cal_cb_pci_1602_16( calibration_setup_t *setup )
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layout.adc_ground_observable = ai_ground_observable_1xxx;
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layout.dac_high_observable = ao_high_observable_1xxx;
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layout.dac_ground_observable = ao_ground_observable_1xxx;
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/* On unipolar ranges, both the gain and offset adjustments couple
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* to the ground observables. I don't know if there is a way
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* to get around it, so we'll just use the bipolar postgain setting. */
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/* The bipolar postgain calibration should be good for both
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* bipolar and unipolar ranges, so disable separate
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* unipolar postgain offset calibration (it will fail
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* horribly anyways if you try it).
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*/
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layout.do_adc_unipolar_postgain = 0;
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return generic_cal_by_range( setup, &layout );
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}
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