Agilent 1100/1200 HPLC System: VWD DetectorCommands and Tips for Third-Party Devices
Agilent 1100/1200 HPLC System: VWD Detector
In addition to (or different from) the standard detector commands (see Commands for Controlling Dionex Devices 
Dionex Detectors) and the general commands for the 1100 and 1200 HPLC systems (see Agilent 1100/1200 HPLC System: General), the following commands and properties are available (please note that the display Filter level determines which commands and properties are displayed):
UV_VIS Channel Commands
|
Property |
Description |
|
AnalogAttenuation |
Attenuation of the analog output (signal value that corresponds to the maximum output voltage). Values: -10 (º 2^-10 AU) - 1(º 2 AU); default: 0 Note: logarithmic scale |
|
AnalogOffset |
Zero offset of the analog output in % of the full output range. Values: 1 - 99%; default: 5 |
|
AnalogRange |
Voltage range of the analog output (may be set to 0.1 or 1.0V only). |
|
Maximum signal and spectra data rate if Step = Auto. Values: 0.1 s - 5.1 s; default: 0.1x |
|
|
PeakWidth |
Expected minimum peak width in [min] (The setting affects the Step: see below). Values (Agilent 1100/1200): 0.00, 0.01, 0.02, 0.05, 0.10, 0.20, 0.20, 0.40, 0.85 (read from module upon connect) Values (Agilent 1200 VWD SL): 0.00, 0.00125, 0.0025, 0.005, 0.01, 0.02, 0.05, 0.10, 0.20, 0.20, 0.40, 0.85 (read from module upon connect) |
|
Signal and spectra data rate (The setting affects the peak width: see below). Values: 0.05 - 3.2 s; default: 0.4 s |
|
|
Signal wavelength. Values: 190 - 950 nm |
The relation between the expected peak width and the corresponding step is as follows:
|
Expected peak width [min] |
0.000 |
0.005 |
0.010 |
0.025 |
0.050 |
0.100 |
0.200 |
0.400 |
|
Corresponding step [s] |
0.073 |
0.073 |
0.073 |
0.073 |
0.146 |
0.291 |
0.582 |
1.165 |
Other Special Detector Commands
|
Property |
Description |
|
AutoActivateUV_Lamp |
If set to On, the deuterium lamp is automatically turned on upon power-up. Values: On, Off (default) |
|
AutoactivateVisible_ |
If set to On, the Tungsten lamp is automatically turned on right after power-up of the detector. Values: On, Off (default) |
|
Autozero
|
Performs Autozero. The command is performed immediately, when issued manually, or at a Program time <0.000 min. With a program time of 0.000, the command is performed before the injection program; with a program >0.000, the command is performed at this program time. |
|
DemoFileName |
File name of the demo file. (May contain %d that will be replaced by the sample number) |
|
Scan |
Records an absorbance spectrum. Use the ScanStartWvl and ScanEndWvl parameters to define the wavelength range to be scanned (190-600 nm). The ScanStepSize defines the step size for the scan (1 ... 10 nm). |
|
ScanBaseline |
Records an intensity spectrum of the baseline (blank spectrum). Use the ScanStartWvl and ScanEndWvl parameters to define the wavelength range to be scanned (190-600 nm). The ScanStepSize defines the step size for the scan (1 ... 10 nm). The baseline spectrum is saved in the detector's memory. |
|
UV_Lamp
|
Reports the state of the deuterium lamp. Values: On, Off (default) |
|
UV_LampRequired
|
If set to On: The detector is not ready for operation if the deuterium lamp is off. Values: On, Off (default) |
Counters
The values are read from the module on connect.
|
Property |
Description |
|
ReferenceDiodeExposure |
Counter of the reference diode exposure. Set the UpperLimit to 0 to disable the associated limit test. |
|
SampleDiodeExposure |
Counter of the sample diode exposure. Set the UpperLimit to 0 to disable the associated limit test. |
|
UvLampIgnitions |
UV lamp ignition counter. Set the UpperLimit to 0 to disable the associated limit test. |
|
UvLampAge |
Total burn time of the UV lamp [h] Set the UpperLimit to 0 to disable the associated limit test. |
|
UvLampOntime |
Burn time of the UV lamp since the last time it was turned on. Set the UpperLimit to 0 to disable the associated limit test. |
UV Calibration Commands
|
Property |
Description |
|
Adjust_Calibration |
Adjusts the wavelength calibration using the absolute deviations determined by the test. |
|
Test_Calibration |
Performs a wavelength calibration test as described in the Agilent VWD Detector Reference Manual. You need to remove the flow cell before executing this command. In addition, the UV lamp must be on. |
Diagnostic Commands and Properties
|
Command |
Description |
|
CellTest |
Performs a cell test. |
|
CellTestEvaluation |
Evaluates the cell test by averaging the spectra of all test data. |
|
CellTestInfo |
Indicates whether the cell test in the next step is performed with or without cell. |
|
DarkCurrentTest |
Performs a dark current test. |
|
FilterTest |
Performs a holmium filter test. |
|
FilterTestEvaluation |
Evaluates the holmium filter test. |
|
IntensityTest |
Performs an intensity test. |
|
IntensityTestEvaluation |
Evaluates the intensity test by calculating the minimum and maximum values of the entire wavelength range for all test data. |
For more information about the diagnostic and scan functions for the VWD detector, refer to:
Agilent 1100 HPLC System Diagnostics: Dark Current Test
Agilent 1100 HPLC System Diagnostics: Cell Test
Agilent 1100 HPLC System Diagnostics: Filter Test
Agilent 1100 HPLC System Diagnostics: Intensity Test
Agilent 1100 HPLC System: Recording Absorbance Spectra (VWD Detector)
Note:
If the detector is equipped with a "B" firmware version (for example, B.06.14), it is not possible to run diagnostics tests in Chromeleon. Use the Agilent Lab Advisor instead.
The Administrator Help section provides installation instructions for the 1100 and 1200 HPLC systems; refer to Hardware Installation:
Agilent 1100 HPLC System: Installation
Agilent 1200 HPLC System: Installation