6.0 SOFTWARE
The software program that controls the microcontroller can be identified by turning the key switch on
while both push button switches (RANGE & UNITS) below the LCD are depressed. The LCD displays
the software version “65”. After “65” is displayed the total number of pulses on the XRS-4 will be
displayed in the LCD. Each digit represents 10,000 pulses. Example: If the LCD reads “04” the total
number of pulses on the XRS-4 is between 40,000 and 50,000 pulses. After the total number of pulses
is displayed the LCD will read “00” or the default pulse setting that was last stored on the unit.
The software program is capable of determining the state of battery charge based on the time between
each pulse. As the battery loses charge the XRS-4 pulse rate slows, with more time between each
pulse. If there is more than 0.33 seconds between two consecutive pulses the following will occur:
The XRS-4 continues the current pulse train to “00”.
After the XRS-4 stops pulsing. The LCD goes back to the original pulse setting. The left and right
digits blink alternately.
The condition indicates a low battery.
The XRS-4 will be inoperable until the key switch is turned off and on, or the battery is replaced.
If there is more than one second between two consecutive pulses.
The XRS-4 stops pulsing immediately and the LCD displays 00.
This function prevents XRS-4 from pulsing continuously if there is a failure in detecting circuitry.
This condition may indicate a low battery, electrical noise, or failure in detecting circuitry.
The operator may need to replace the battery pack, turn key switch off and on, or send the XRS-4
back for repair.
7.0 MAINTENANCE
X-RAY DOSE MEASUREMENT Using a dosimeter, the average X-ray dose for new tube can be
established.
With the dosimeter located 1 foot from the front of the case and in line with the center of the beam
angle label, the reading for 10 pulses should be 26 mR to 36 mR.
The leakage sheet illustrates the X-ray dose and maximum allowable radiation leakage levels for
each X-ray unit. A completed copy of this form accompanies each X-ray.
TUBE REPLACEMENT If you have a tube replacement kit refer to instructional disk included with the
kit. If you do not have a kit the unit must be sent back to Golden Engineering or an Authorized
Distributor for tube replacement. Tube life is approximately 50,000 pulses. Under normal conditions the
tube’s output will decrease slowly with use. If the tube is broken or the glass cracks the tube output will
cease immediately.
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