Signal (Modular LC VWD)

Enable Dual Wavelength (G7114A/B only)

Mark this check box to set up two wavelengths for analysis.

Wavelength

Acquire

Mark the Acquire check box to specify that the signal is stored in the CDS during data acquisition. When the check box is cleared, the signal is not stored. Be sure to mark the check box against any signal that you want to record during your analysis.

Single Wavelength

You can set a wavelength for your analysis between 190 and 600 nm. When you set a new wavelength, the baseline of the detector is automatically adjusted.

Dual Wavelength (G7114A/B only)

You can set Signal A and Signal B wavelengths for your analysis between 190 and 600 nm. Signal A and Signal B must not differ by more than 150 nm.

In Dual-Wavelength mode, only one peakwidth setting is available.

Peakwidth (Response time)

Peakwidth enables you to select the peak width (response time) for your analysis. The peak width is defined as the width of a peak, in minutes, at half the peak height. Set the peak width to the narrowest expected peak in your chromatogram. The peak width sets the optimum response time for your VWD. The peak detector ignores any peaks that are considerably narrower, or wider, than the peak width setting. The response time is the time between 10% and 90% of the output signal in response to an input step function.

Limits: When you set the peak width (in minutes), the corresponding response time is set automatically and the appropriate data rate is selected as shown in the tables:

G7114AG7114A

Single-Wavelength mode

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.0016	<0.016	120
>0.0016	0.031	120
>0.0031	0.063	120
>0.0063	0.13	80
>0.013	0.25	40
>0.025	0.5	20
>0.05	1	10
>0.1	2	5
>0.2	4	2.5
>0.4	8	1.25

Dual-Wavelength mode

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.4	4	2.5

G7114BG7114B

Single-Wavelength mode

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.00078	0.0078	240
>0.00078	0.016	240
>0.0016	0.031	240
>0.0031	0.063	160
>0.0063	0.13	80
>0.013	0.25	40
>0.025	0.5	20
>0.05	1	10
>0.1	2	5
>0.2	4	2.5
>0.4	8	1.25

Dual-Wavelength mode

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.4	4	2.5

G1314A/BG1314A/B

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.0063	<0.063	13.74
>0.0063	0.13	13.74
>0.013	0.25	13.74
>0.025	0.5	13.74
>0.05	1	6.87
>0.1	2	3.43
>0.2	4	1.72
>0.4	8	0.86

G1314CG1314C

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.0016	0.016	54.95
>0.0016	0.031	27.47
>0.0031	0.063	13.74
>0.0063	0.13	13.74
>0.013	0.25	13.74
>0.025	0.5	13.74
>0.05	1	6.87
>0.1	2	3.43
>0.2	4	1.72
>0.4	8	0.86

G1314DG1314D

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.0063	<0.063	20
>0.0063	0.13	20
>0.013	0.25	20
>0.025	0.5	20
>0.05	1	10
>0.1	2	5
>0.2	4	2.5
>0.4	8	1.25

G1314EG1314E

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.0016	<0.016	160
>0.0016	0.031	160
>0.0031	0.063	160
>0.0063	0.13	80
>0.013	0.25	40
>0.025	0.5	20
>0.05	1	10
>0.1	2	5
>0.2	4	2.5
>0.4	8	1.25

G1314FG1314F

Peak Width (min)	Response Time (sec)	Signal Data Rate (Hz)
<0.0031	<0.031	80
>0.0031	0.0635	80
>0.0063	0.13	80
>0.013	0.25	40
>0.025	0.5	20
>0.05	1	10
>0.1	2	5
>0.2	4	2.5
>0.4	8	1.25