BEHA UNITEST 9038 Mode D'emploi page 13

Operation
settings using the UNITEST Wallscanner and, thus, feel
safe when handling the wall scanner.
Prior to usage check the instrument for perfect func-
tioning. Never use the UNITEST Wallscanner in hu-
midity or precipitations such as dew or rain.
Before any drilling and mounting operations discon-
nect all voltages !
4.2 Operation
Calibrating in NORMAL and DEEP Settings:
Before the UNITEST Wallscanner can accurately find a wood
(or metal) stud or joist, the UNITEST Wallscanner must be
calibrated to the surface it will scan.
Calibrating in both NORMAL and DEEP settings is identical.
" Apply the UNITEST Wallscanner so that the two Velcro
Pads on the back of the UNITEST Wallscanner are se-
cure against the area to be scanned
" Press and hold down the activation switch, till the bar-
graph is in the display. Then let the activation switch go.
" The READY indicator will appear on the LCD once the
UNITEST Wallscanner has been calibrated (about 1/10th
of a second)
The UNITEST Wallscanner will not calibrate properly if
it has been placed directly over a stud, dense area such
as metal, or a wet, newly painted area. Improper cali-
bration results in the flashing RESET warning on the
display (see figure 2). If the RESET flashes, move the
UNITEST Wallscanner a couple of inches to the side
and try again.
Due to the sensitivity of the TIEF mode, the UNITEST
Wallscanner will not flash the RESET warning if it has
been calibrated over a stud while working in that mode.
If, during scanning, the surface appears „blank" to the
UNITEST Wall-scanner, relocate UNITEST Wallscanner
and calibrate again.
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Scanning in NORMAL- and DEEP Settings:
NORMAL- and DEEP Settings have identical scanning pro-
cedures. DEEP, however is twice as sensitive as the NOR-
MAL setting for thick surface materials.
" After the UNITEST Wallscanner has been calibrated and
is set securely on a surface, slide it horizontally.
" As the UNITEST Wallscanner moves towards a stud, the
LCD bars will begin to move towards the midpoint at a
rate of two-bars at a time. Once the UNITEST Wallscan-
ner detects the edge of the stud, the center bar of the
LCD will light and an audio tone will sound.
" Mark the edge of the stud.
Fig. 4
" Continue moving through the stud until the bars return
to the side of the display, then reverse the direction of
the unit to locate the other edge of the stud (see figure
5).
" The center of the two marks is the center of the stud.
Operation
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