VT UltraMic-384 Hardware Operation Manual
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In both One Hour Recording Mode and in Minutes Recording Mode no scheduling must be
present in the memory of the VT UltraMic-384. Please check the memory and erase it as explained
in the
SCHEDULING DELETION
chapter.
Unattended Recorder
The VT UltraMic-384 is also an embedded recorder and nothing else is required but an external USB power supply and a
formatted SD card.
There are three ways of recording:
ONE HOUR RECORDING MODE
MINUTES RECORDING MODE
SCHEDULED RECORDING MODE
One Hour Recording Mode
This is the simplest way to use it as an autonomous recorder. No scheduling is needed.
This mode allows you to make a single, one hour length recording each time the microphone is powered on. After one hour the
file is closed and the VT UltraMic-384 will go into a low power mode.
How to setup the autonomous
one - hour recording mode
:
-
Open the VT UltraMic-384 by unscrewing the back.
-
Insert a formatted
SD card
into the slot on the circuit board.
-
Reassemble the device.
-
Power the device via an
USB power supply
such as wall adapter or a USB power bank.
Then the device starts recording at 384kHz sampling rate. Every 8 seconds the
RED led
emits a blink indicating the beginning of
recording. If you want to
stop the recording press the button
for a few seconds. Consequently the
green led
blinks rapidly to
indicate the stop of the current recording.
Every time VT UltraMic-384
is powered on, it creates a new folder - sequentially named using the format
PWRxxxxx
- where
xxxxx is a sequential number. A maximum of 6 files is saved in the folder, each file up to 480 Mbytes in size (approximately 10
minutes recording).
If you need
another hour recording
, then repower the device again.
Note:
-
As an alternative, you could use an external timer connected to a USB wall mount adapter so that the timer powers the
microphone for a periodic one - hour recording.
