Dionex Detectors
Dionex UVD-3000 UV Detector

In addition to the standard commands available for all detectors (see  Dionex Detectors), the UVD-3000 detector provides the following control commands (please note that the display Filter level determines which commands and properties are displayed):

 

Command/Property

Description

Adjust_Calibration

Performs wavelength calibration by using an internal test.

 Tip:  

The command stops the data acquisition.

AnalogOffset1

Sets the offset voltage for analog output 1.

AnalogOffset2

Sets the offset voltage for analog output 2.

AnalogScale

Sets the sensitivity of the analog outputs.

Autozero

Performs automatic null balancing.

 Tip:  

Use this command only before you start data acquisition. For null balancing whenever the wavelength is changed in the program, use AutozeroOnWlChange = On. Use AutozeroOnWlChange = Off to cancel null balancing. Use:

 AutozeroOnWlChange = On

 UV_VIS_1 = 300

 

(not:  AutozeroOnWlChange = Off

 UV_VIS_1 = 300

 Autozero)

AutozeroOnWlChange

When set to On, automatic null balancing is performed whenever the wavelength is changed.

Data_Collection_Rate

Enter the rate at which Chromeleon collects digital data from the detector.

DemoFileName

Name of the file that is read in the Demo Mode.

GetDiodeReading

Determines the values for SignalDiode and ReferenceDiode.

LampType

Indicates the lamp type (read-only).

ReferenceDiode

Indicates the brightness of the reference signal.

Response

Indicates the time the detector requires for rising from 10% to 90% in response to a signal step. The parameter is used for noise suppression (values: 0.1; 0.2; 0.5; 1; 2; 5, or 10s)

 Tip:  

Most noise is suppressed if the Response is 10s. However, for the acquisition of narrow peaks a lower time response will be more appropriate.

SignalDiode

Indicates the brightness of the measured signal.

 

 Tip:

If you perform the Data Collection Rate command, the default Step value is set to the reciprocal value. That is why you have to perform the Step command after the Data Collection Rate command if you need a different step.

The UV_Diagnostic section provides information about detector operation and service. The entries are read-only:

 

Command/Property

Description

LampAge

Reports the total operating hours of the lamp.

LampIgnitions

Reports the number of lamp starts.

LampNumber

Indicates the lamp number. (The value is incremented when a new lamp is installed.)

LampOnTime

Reports how many hours the lamp has been burning since it was turned on.

LastServiceDate

Reports when the detector was last serviced. (The Dionex Service Engineer enters the date.)

LastServiceCode

Reports the service code, providing information about the service. (The Dionex Service Engineer sets the code.)

ManufacturingDate

Reports the detector manufacturing date.

MotorWorkTime

Reports the total operating hours of the motor.

 

For information about how to install the detector, refer to Hardware Installation  UVD-3000 UV Detector: Overview in the Administrator Help section.