Ciel EaM Batz 2.0, Manual

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First steps:
Open the battery case on the rear side and place a 9 volt battery in the
compartment. Please pay attention to the polarity of the battery. To turn
the detector on press the On/Off button (D) until the display (B) shows
'----'. Press the + button within a second to confirm this or the detector
will switch off.
This prevents the detector from accidentally being switched on while being
carried.
If the device is not used for a long period of time please remove the
battery from the compartment.
Setting the volume:
After switching the detector on the volume is set to midscale. Use the
b and – (F) to set the volume to the level required. The setting
applies to all modes. You may change the volume at any time.
Setting the frequency:
The call frequency is selected by the thumbwheel (G) on the right side.
The lowest frequency is 18 kHz, the maximum is 130 kHz. For technical
reasons the upper maximum may be exceeded. To give you the best
resolution and to compensate for fluctuations of temperature and voltage
the HD mode will be recalibrated every time the detector is switched on or
switched into HD or TE mode. A battery can be used until it's end of life.
Testing your detector:
You can test your detector by setting the detector to a low frequency up to
25 kHz and rub your fingers ~30cm from the microphone. You should now
hear this noise very clearly on the headphones. If you notice other noises
you may check your surrounding area for other ultrasonic sources like
energy saving lamps, neon lamp starters or switching power supplies.
Influences on the reception of the detector:
Bat calls can be very different depending on species and the surrounding
enviroment. Some species call in the lower, energy-rich ultrasonic range
and can be easier to hear than species which call in the upper band.
Bats adapt their calls depending on the habitat. In an open area with few
or no obstacles the calls are louder but more rare than in a thick forest.
The reception is also affected by the distance to the bat, flight direction
and atmospheric conditions. The higher the frequency of the call, the more