How fast are the signals received by the URSA-II?
It takes about 300us to completely process a pulse on the URSA-II and most of that is sending the data via serial. The hardware pulse counter operates even while the system is otherwise busy, and provides a true number of counts and is used for applying dead time compensation. The practical limit is about 16,000 […]
Can I use an HPGe detector with the URSA-II?
The URSA-II will technically work with HPGe detectors, though it is not ideal for that purpose. The device was designed around detectors such as NaI and CdZnTe, and there is a little bit of jitter in the amplification/ADC. With an HPGe detector, you get peaks a couple of times wider than you would expect. Another […]
Are you having trouble connecting to the URSA-II using a USB-Serial cable?
Make sure that the COM port assigned to the port is above COM 6 through the device manager. Sometimes there are other devices assigned to the lower number COM ports that might create a conflict.
What are the different inputs on the URSA-II?
1. On/Off Switch. 2. Power On LED. Glows red when the URSA-II is powered on. 3. Charge Mode switch. Slow position: Internal NiMH batteries are recharged using a trickle current which will fully charge depleted batteries in about 14 hours and safely maintain them at full capacity indefinitely. Fast Charge: Internal NiMH batteries are undergoing […]
What are the different connectors on the URSA-II?
A �C connector� is for probes with the high voltage and the signal on the same cable, much like the RAP Probes. Some probes have separate cable for each, so the URSA-II also comes with an MHV and BNC connector. A �MHV Connector� for the High Voltage and the �BNC Connector� for the pulse.
Does the URSA-II work with scintillation detectors with no preamplfier?
Yes. If the signal is too small then the HV should be increased to where the x35 gain range can be used.
For the URSA II, when trying to do an efficiency calibration, I get the error: “Efficiency data is incomplete! Efficiency calibration aborted.”
Information needs to be entered for each ROIs in the set. Each individual ROI within the set must have an activity entered or be flagged as an unknown. Otherwise you get the error message.
URSA-II MCA Users Group – Google Group
URSA-II MCA Users Group – Google Group This is a group for folks using the URSA-II Multi-Channel Universal Radiation Spectrum Analyzer.