Dynalyzer – Digital Display/Printer OPERATION MANUAL
2
Important
READ THIS MANUAL
Serious measurement errors may result from improper use of this equipment or improper
interpretation of readings.
Introduction
As an element of the Dynalyzer system, the Digital Display embodies a wide range of x-ray
measurement features for rapid calibration, compliance testing, and troubleshooting. When used
with the Dynalyzer II or III High Voltage Unit, conventional oscilloscope and voltmeter, complete
analysis of the system under test is possible. It provides:
• Expanded versatility, more exposure data and compliance testing capability and faster,
easier data interpretation
• Automatic exposure calculations, decreasing manual computational errors
• Greater data accuracy (traceable to the US National Bureau of Standards)
• Stored data in the temporary digital display memory for statistical measurements and data
recall
• Data recorded in hard copy form for permanent record purposes with the integral printer.
The measurement features include:
• kVp (anode, cathode, and anode + cathode)
• mA and mAs
• Exposure time
• Standby and boosted filament current
• Coefficient of variation calculations for kV, mA, and time for up to 10 exposures
• Fixed window (sampling period) with an adjustable delay, for analyzing waveforms in
equipment such as falling load types of generators and automatic filament/mA control
systems
• Storage and recall capability of exposure data for as many as 10 consecutive exposures
Description
A microprocessor-based circuit controls all functions – from exposure measurements to data recall.
Troubleshooting is simplified by the inclusion of self-diagnostic tests for locating circuit
malfunctions.
Two digitally processed and displayed trigger modes are available:
• Percent – Selects a percentage of a reference level (previous exposure) for kVp and mA
• Preset – Selects an absolute value of kVp, mA, or an external source
The preset mode obviates the need for making a reference exposure and resetting the trigger
between exposures, regardless of the time elapsed.
Technique factors are stored in the memory of the digital display unit for up to the last 10
consecutive exposures, any of which can be sequentially recalled. Coefficient of variation
calculations are made automatically and can be instantly displayed on the front panel.
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