Shimadzu SPD-M10Avp/M20A PDA Detector

Commands and Tips for Third-Party Devices
Shimadzu SPD-M10Avp/M20A PDA Detector

In addition to the General Properties and the standard detector commands (see Commands for Controlling Dionex Devices Dionex Detectors), the commands and properties from the table below are available (please note that the display Filter level determines which commands and properties are displayed):

Detector Commands and Properties

SPD-M10Avp and SPD-M20A:

Command/Property	Range/Values	Description
Data_Collection_Rate	0.50000 to 40.00000 Hz	Sets the data collection rate in [Hz]. Tip: Changes to this parameter affect the 3D signal and the channel signals.
OperatingHours	0.0 to 1000000.0 hours	Displays the total duration of exposure of the photo diode array (read-only).
LampMode		Specifies the lamp mode.
	Off	No lamp
	UV	Only UV lamp
	VIS	Only VIS lamp
	Both	UV and VIS lamp
ModelVariant		Reports the detector ID (read-only).
Response	0 ms (no averaging), 25 ms (SPD-M20A only), 80 ms, 160 ms, 240 ms, 320 ms, 640 ms, 1280 ms, 2000 ms	Sets the time filter of the measuring data. Tip: Changes to this parameter affect the 3D signal and the channel signals.
SamplingTime	25 ms (SPD-M20A only), 80 ms, 160 ms, 240 ms 320 ms, 640 ms, 1280 ms, 2000 ms.	Displays the time between two scans (read only). Corresponds to the reciprocal Chromeleon value of the data collection rate.
Status		Displays the statuses of the data collection and the detector (read-only).
UVExposureTime	0.0 to 1000000.0 ms	Reports the exposure time of the photo diode for the current slit width when a UV (D2) lamp or a UV and VIS (tungsten) lamp are used simultaneously (read-only).
UVLampOnTime	0.0 to 000000.0 hrs	Counts the operating hours of the UV lamp since the lamp was replaced last (read-only).
ValidationDate		Reports the date when the device was validated last (read-only).
VISExposureTime	0.0 to 1000000.0 ms	Reports the exposure time of the photo diode when a VIS (tungsten) lamp is used (read-only).
VisLampOnTime	0.0 to 1000000.0 hrs	Counts the operating hours of the VIS lamp since the lamp was replaced last (read-only).
VISVoltage	0.0 to 1000000.0 V	Reports the operating voltage of the VIS lamp (read-only).

SPD-M20A only:

Command/Property	Range/Values	Description
SlitWidth	1.2 nm or 8 nm	Sets the width of the micro slit. A small slit increases spectral resolution. A wide slit improves the signal-to-noise ratio.
TempCtrl	On or Off	Turns temperature control of the flow cell on or off.
Temperature		Indicates the flow cell temperature.
Temperature. Nominal	9°C to 50°C, default: 40°C, Off = 0	Sets the nominal flow cell temperature.
Temperature. Value		Reports the actual flow cell temperature.

UV-VIS Channel Properties and Commands

The following properties refer to digital single-channel data only:

Command/Property	Range/Values	Description
Average	ON OFF	Averages two data points. ON: The complete step interval is used for averaging (recommended). OFF: Only the last sample of a step is used.
Bandwidth	1 nm to 64 nm	Sets the bandwidth. The higher the bandwidth is, the better is the signal-to-noise ratio. Tip: The detector will only work with settings of 1, 4, 8, 16, 32 and 64 nm. However, in Chromeleon panels and PGM files it is possible to enter all values from 1 to 64 nm. In case of a mismatch, the detector rounds down to the next value on the scale—for example, 1 nm if 3 nm has been entered in Chromeleon. The Chromeleon panel always shows the real value used in the detector; the value visible in the panel will, for example, switch to 1 nm after 3 nm has been entered. Tip: Changes to this parameter affect the digital channel data and the analog signal of the optional D/A board.
Polarity	Positive Negative	Sets the polarity of the analog output signal of the corresponding channel. Tip: This property is available only for the SPD-M20A or when the D/A converter board is selected in the Chromeleon Server Configuration program. The setting does not affect the shape of the digital signal.
Range	500, 1000, 1250, 2000, 2500, and 4000 mAU/V.	Sets the output range of the analog output of the corresponding channel. Tip: This property is available only for the SPD-M20A or when the D/A converter board is selected in the Chromeleon Server Configuration program. The setting does not affect the shape of the digital signal.
RefBandwidth	1 nm to 64 nm	Enter a value for the reference bandwidth. Only select a reference bandwidth if you have selected a reference wavelength (also see RefWavelength). For further details, also refer to section Notes on Reference Compensation below.
RefWavelength	190 nm to 800 nm Off	Enter the reference wavelength. In combination with the reference bandwidth (see RefBandwidth). The reference wavelength is used to correct the absorbance values of the selected wavelength. Select Off to turn off reference compensation for the selected channel. For further details, also refer to section Notes on Reference Compensation below.
Retention	0.000 min to 10000000.000 min	Specifies the signal retention time.
Signal		Indicates the signal properties.
Signal.Value	-2147483.750 to 0.000 mAu	Reports the current signal value.
Signal.UpperLimit Signal.LowerLimit	-2147483.750 to 0.000 mAu	Sets the upper or lower limit for the signal. Tip: If the actual value is above the upper limit or below the lower limit, Chromeleon aborts the batch and starts emergency handling.
Step	0.001 to 4.80 s Auto	Sets the step. The default setting is Auto. Dionex recommends using this setting because the optimum step is selected dynamically.
Wavelength	190 nm to 800 nm	Sets the wavelength. Tip: Changes to this parameter affect the digital channel data and the analog signal of the optional D/A board.

Notes on Reference Compensation:

The Parameter RefBandwidth and RefWavelength are used for determination of a reference wavelength for individual channels. Observe the following restrictions when using the parameters:

User-defined columns and formulas are not allowed.
The parameters can only be defined manually or in a sample PGM. When defining a parameter, make sure that currently no data acquisition is running.
The value derived from RefWavelength − RefBandwidth/2 has to be ≥ 190 nm (if RefWavelength activated).
The value derived from RefWavelength + RefBandwidth/2 has to be ≤ 800 nm (if RefWavelength is activated).

Commands and Properties of the 3D field:

Command/Property	Range/Values	Description
BunchWidth	1 nm to 32 nm	Determines how many wavelengths are averaged when collecting photo diode signals.
MaxWavelength	190 nm to 800 nm	Sets the maximum 3D wavelength.
MinWavelength	190 nm to 800 nm	Sets the minimum 3D wavelength.
RefBandwidth	1 nm to 64 nm	Sets the reference bandwidth.
RefWavelength	190 nm to 800 nm Off	Sets the reference wavelength.
Retention	0.000 min to 10000000.000 min	Indicates the signal retention time.

Note:

You can change the digital data. also, using the parameters specified for the main device, e.g., Data_Collection_Rate or SlitWidth.

In addition, if the PDA detector is fitted with a D/A board and if this option is selected in the Server Configuration program, the analog output of the related D/A channel can be controlled with the channel device.

For an overview of the detector, refer to Installing and Controlling Third Party Devices Shimadzu SPD-M10Avp/M20A PDA Detector: Installation.

For a program example, refer to Commands and Tips for Third-Party Devices Shimadzu SPD-M10Avp/M20A PDA Detector: Program Example.