Johnson JRT300-RDHV-S Instruction Manual page 23

4. Detecting Methods
1. Press the
to indicate the detector is ON. Press and hold the
2-3 seconds to turn the detector off.
2. A second short press of the
backlighting ON or OFF, respectively.
3. While detecting, the signal indicators show as follows:
• If the laser beam is below center, the display shows a
downward arrow and beeps rapidly.
• If the laser beam is at center, the display shows a horizontal
line and emits a solid sound.
• If the laser beam is above center, the display shows an upward
arrow and beeps slowly.
• If no laser beam is detected, the detector will remain silent.
4. Keep the detecting window facing the rotating laser.
5. Keep the detector still while detecting the laser beam.
6. When the laser beam is centered,
mark at the side reference marker.
(Figure 20)
7. When the detector does not receive a
laser signal for ten minutes, and there
are no buttons pushed during these
ten minutes, the detector powers off
automatically.
5. Connecting to the Clamp
Slide the clamp bracket into the support
bracket on the back side of the unit. (Figure 21)
6. Volume Control
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button. It will beep once and the display will turn on
Figure 21
button will toggle the display's
button for
Figure 20
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