Latest Update, From YS Design Studio Re: The USD6 Bat Detector

OK, forgive me if it seems that I'm dwelling on this detector - But, in light of these new operating instructions: I must make Folks aware, of some Features that until now, were unknown. These new functions are interesting and seem like a "hidden bonus" of sorts.

Here are the operating instructions, as I've received them (from Mr. Sugimoto, of YS Design in Japan).
Below these, I will list and explain what they actually mean, in fuchsia (to the best of my ability).

For the USD6 Ultrasonic Detector:

YS Design Studio

●BatDetector USD6 4 Mode Select

MODE-0 (o0) VOLUME ONLY Frequency ADJ
MODE-1 (o1) Push Switch ON + VOLUME  ADJ
MODE-2 (o2) Push Switch ON + VOLUME  ADJ
MODE-3 (o3) Auto Scan

One hand Operation OK

●MODE Change Operation
1.Push Switch ON + Power ON(Volume)ON

2.MODE Volume Rotary Select
o0　→ o1　→ o2　→ o3

3.Enter → Push Switch

4.MODE SET
  Mode Run
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For the USD6 Ultrasonic Detector:

●BatDetector USD6 4 Mode Select - There are 4 separate Modes, that the unit may operate in.

MODE-0 (o0) VOLUME ONLY Frequency ADJ - In this Mode (o0) the unit behaves as a normal heterodyne bat detector. Volume knob: Changes volume and Frequency/Tuning knob: Adjusts frequency. The tuned frequency is constantly displayed.

MODE-1 (o1) Push Switch ON + VOLUME  ADJ - This Mode (o1) is similar to the above. Except the unit doesn't constantly display the tuned frequency. Volume knob: Changes volume and Frequency/Tuning knob: Will only adjust the frequency IF you press the small red button while turning the Tuning Knob. So, it essentially behaves like a "Tuning lock" of sorts. Preventing accidental changes to the set frequency.


MODE-2 (o2) Push Switch ON + VOLUME  ADJ - This Mode (o2) is similar to the above. Again, the unit doesn't constantly display the tuned frequency. Volume knob: Changes volume and Frequency/Tuning knob: Will only adjust the frequency IF you press the small red button while turning the Tuning Knob.

MODE-3 (o3) Auto Scan - This Mode (o3) is similar to the above. Again, the unit doesn't constantly display the tuned frequency. Volume knob: Changes volume. The neat part here, is that the Auto Scan feature is activated by momentarily pressing the red button. The unit then goes into a (single) fast scan through it's frequency range (10-73kHz). I expect this to be useful while observing a bat in flight: You can point the detector at it, press the red button, and the unit will stop on the center frequency of said bat. The Frequency/Tuning knob: Will only adjust the frequency IF you press and release the small red button, then turn the Tuning Knob.

One hand Operation OK

●MODE Change Operation
1.Push Switch ON + Power ON(Volume)ON - This refers to how you "toggle" between Modes. Or, in other words, how the different Modes are selected. It is done by powering the unit on while holding down the small red button. The letters "Se" are displayed, and when you release the red button: The Mode you are currently in is displayed.

2.MODE Volume Rotary Select
o0　→ o1　→ o2　→ o3 - This ability to change modes, using the Volume knob does not work on my unit. What I've found: Is that the only way to toggle between Modes, is to power the unit off each time. Then, each time you power on, while holding the red button - You will see that it is in the next Mode of the sequence. 

3.Enter → Push Switch - This (red button) is pressed to lock in your Mode selection.


4.MODE SET
  Mode Run - The red button is then used to begin/start running in your selected Mode.

Any new owners of this unit, may feel free to ask me any questions regarding it's operation.
...And a recent pic:

Happy bat detecting!