Dynalyzer – Digital Display/Printer OPERATION MANUAL
3
Construction
A louvered aluminum cover with a luggage type handle encloses a rugged, yet lightweight
aluminum chassis. Four 4-digit LED displays show all x-ray parameters in a clear logical
arrangement and are protected, along with the front panel controls, by an extension of the cover.
The rear panel contains a selectable line voltage cable receptacle, bulkhead receptacles for
connection to the Dynalyzer II or III High Voltage Unit and BNC connectors for an auxiliary
oscilloscope. Modular construction is used throughout.
The following specifications refer to the measurement accuracy of signals provided at the Digital
Display input and may add to or subtract from inaccuracies in the Dynalyzer H.V.U.
Errors, in absolute terms, would typically be less than 50% of the worst case values stated. Errors
(from one measurement to another) would typically be less than 25% of the worst case values
stated.
Interface Requirements:
Compatible with both Dynalyzer II and III High Voltage Unit.
Measured Quantities
(See note 1)
kVp (peak kilovoltage)
Anode to Cathode
20 to 150 kVp ± (0.75 kV + 0.5% of reading)
Anode Only
20 to 82.5 kVp ± (0.6 kV + 0.5% of reading)
Cathode Only
20 to 82.5 kVp ± (0.6 kV + 0.5% of reading)
Internal Resolution
.03125 kV (
/
32
kV)
msec (exposure time)
0.7 to 9999 msec ± (0.25 msec + 0.5% of
reading) See notes 2 and 3.
Internal Resolution
1 microsecond
Filament Amps
0-20 Amps rms ± (0.05A + 0.7% of reading)
See note 5.
Internal Resolution
1.25 mA
Frequency Response
Within 1% of 60 Hz value where frequency <
100 KHz and filament current value > 2 amps
mAs – Normal Mode (millamperes x
seconds)
Range
0.1 to 2621 mAs ± (0.1 mAs + 0.6% of reading
+ 1 mAs per second of exposure) See notes 2
and 5.
Internal Resolution
0.04 mAs
Frequency Response
> 1KHz
mAs – Fluoro Mode (milliamperes x
seconds)
Range
0.01 to 131 mAs ± (0.1 mAs + 0.6% of reading
+ 0.1 mAs per second of exposure) See notes
2, 3, and 5.
Internal Resolution
0.002 mAs
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