Qualifier X-Ray
4
1 - 8 0 0 - 3 3 6 - 9 6 8 1
Display Screen
The Display screen provides information on the
battery condition, units of measure, shielding
integrity value, and if enabled, the PASS/FAIL
status of the measurement. A back light illumi-
nates the display.
Battery Level
A fresh set of batteries is indicated by four bars.
Each bar represents approximately 25% runtime
capacity. A low battery condition is indicated by
no bars showing. The HHD automatically powers off when the battery state is low.
Note: The accuracy of the battery level indicator is relative and will vary with the
battery type and manufacturer.
Shielding Integrity Measurement Value
When a measurement is made, by a single press of the Button, the level of the
ingress signal is displayed as a shielding integrity value in dB units-of-measure.
The value range is 80 dB (very good shielding) to 25 dB (very poor shielding).
PASS / FAIL Function
The HHD can be setup with a measurement threshold value to determine if the
integrity reading is acceptable. PASS is displayed if the measured integrity value
is higher (better) than the threshold value. FAIL is displayed if the measured integ-
rity value is lower (worse) than the threshold value. The PASS/FAIL threshold
value is user selectable. This function can be disabled as described on the next
page.
Threshold Value Setup
To access the threshold value setup mode, press the Button twice within one
second when the HHD is on. The PASSFAIL readout activates and two digits
display the current threshold value. Press and hold the Button to scroll to the de-
sired threshold value. Release the Button to stop rapid scrolling and then use
single presses of the Button to the desired value. If a lesser value is desired, con-
tinue to hold the Button as the value wraps around from 80 and then back down to
25 dB. Release the Button and allow the HHD to auto power off (six seconds). At
the next power up, the newly set threshold value is enabled and the PASS or the
FAIL indicator will display accordingly. See the next sections for the procedure to
disable or enable the PASS / FAIL function.
