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Version 1.27
Acoustic Signal 4.4
In addition to readings on the optical display, an acoustic signal can be heard. The frequency of the
acoustic signal is increasing proportionally to increased readings.
Whenever the device is ready for operation, an acoustic signal can be heard (clicking noise) in
regular intervals. The higher the measurement value of an object the higher the frequency of the
tone will be. The signal will change to a continuous tone when the reading approaches full range of
the display unit.
The operator chooses between two sound profiles. Press and release the volume buttons (5 + 6) at
the same time to toggle between the profiles. If the change was successful, a confirmation tone can
be heard. The selected sound profile remains set even when turning off the SBL10.
Profile 1
The pitch of the tone in In this profile is the same for positive and negative readings. The size of the
reading can be derived from the sound. However it is not possible to derive the polarity from the
sound.
Profile 2
There are different pitches of the tone for positive and for negative readings in this profile. This
allows the operator to derive sizes of the reading as well as its polarity from the sound.
The volume is controlled by two buttons (5 + 6) on the control and display unit. The tone can be
muted by pressing (5) repeatedly.
The set volume is valid for loud speakers and headphones. To avoid injuries, make sure
to decrease the volume when switching from speaker to head phone operation.
Power Supply and Battery Check 4.5
The SBL10 unit is equipped with two battery compartments, each taking three 1,5 V batteries
(single-cell batteries/LR20) or three 1,2 V rechargeable batteries (HR20). When working with it, at
least one battery compartment needs to be filled with batteries. If both battery compartments are
used, then the compartments are forming a redundant power supply. During operation battery
voltage is supervised permanently. As soon as the voltage of the active compartment is insufficient
to operate the SBL10, a switch over to the redundant compartment is taking place. There is no
interruption during the switch over.
Information about the status of the batteries can be seen on the control and display unit's battery
display (3) . Only failure states are displayed during normal operation.
The red LED of the battery display is lighting up for one of the following reasons:
·
Batteries are empty and have to be replaced
·
The battery compartment is empty
·
Something is wrong (e.g. compartment lid not closed or locked)
When pressing the „TEST“ button (9), the battery level is displayed for 2 seconds. Afterward the
display for the active battery compartment is blinking twice.