Fluke Biomedical 8000 Victoreen - Manual (Page 7)

1
General Information
Product Description
1-3
The NERO mAx filter cards contain the various filters needed to accurately measure kilovoltage. Each
filter card is coded so that the NERO mAx “knows” which filter is in use and its position. The NERO mAx
also verifies that the filter card is valid for the selected measurement mode. In addition, the filter cards
are keyed so that they may only be inserted one way. The W/Al filter card is labeled with the kVp ranges
for which it is calibrated. The Mammo filter card is labeled for the x-ray tube targets for which it is
calibrated.
The serial numbers of the NERO mAx control console unit, detector and filter cards must be matched in
order to obtain accurate results. Since the control console unit, detector and filter cards are calibrated
together, they must be used together for accurate measurements.
1.2 New Features of Firmware Release 2.3
This release adds several new features to the Radiographic mode that give the NERO mAx greater
flexibility when making kV and exposure time measurements on all types of radiographic and dental x-ray
machines.
1. The %kV setting provides more time measurement options:
• Time measurements from 90%, 80%, and 75% of the peak kV.
• Pulse counting and zero crossing settings for single-phase generator time measurements.
2. User settable measurement delay allows:
• kV overshoot portion of waveform to be excluded from kV analysis.
• Exclusion of x-ray generator preheat pulses from kV and time analysis.
More information on these new features may be found in “Using a Measurement Delay” and “Using %kV
and Exposure Time Measurements” at the end of Section 2.5.1--Radio Mode.