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 Product Class (Data Acquisition)
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4. Instrument Selection
The YESDAS-2 has 32 analog channels, with 8 of them taken up by an MFR-7 or UVMFR, or a 11 channels for a SPUV-10. Assuming you want to monitor bettery voltage, a MFR-7 or UVMFR can accept up to 23 other sensors; a SPUV-10 can handle 20 more. In addition six pulse/digital TTL counter inputs are availabel for anemometers or tipping bucket rain sensors. Adding several pyranometers or IR pyrgeometers is possible and frequently down for users that would like to integrate a MFR into their legacy BSRN-type tracking pyranometer installations. If you intend to connect the YESDAS-2 up to other instruments, please let us know at time of order so we can advise you.
No. YESDAS-2 provides a sophisticated ephemeris algorithm, and thermal control to these instruments, and is therefore tightly coupled to their design. In addition, our multi-platform user software and our optical calibration facilities are dependent on YESDAS-2. Also, YESDAS-2 provides automated Langley analysis and optical depth capability. Keep in mind that the cost of the YESDAS is only a fraction of an MFR-7, UVMFR, or SPUV system, so any cost savings would be minimal.
Yes, but only if it is a downward-looking head (this is our DFR system). You can also connect a SPUV to an MFR/UVMFR. For example, an existing MFR or UVMFR can add on a SPUV as a factory upgrade. Conversely, a SPUV/YESDAS-2 system can have an MFR-7/UVMFR instrument head added by the factory. However, it is not possible to connect two complete shadowband instruments, such as two MFR/UVMFRs, to a single YESDAS.
Any meteorological sensor with either a voltage current or digital (TTL) pulse type output (but not RS-232) can be added. The YESDAS-2 manual covers this subject in detail.
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