CTP Systems dBbox2, Руководство пользователя, Страница: 2 / 17

2
Introduction - version 3 firmware
The dBbox2 is an evolution of our original dBbox designed primarily for use by sound
and audio installation engineers. The unit is fitted with a powerful digital signal
processor and separate microcontroller providing huge flexibility for future firmware
updates. The unit allows monitoring, metering and generation of both stereo
analogue and AES/EBU audio from a pocket sized unit. The dBbox2 includes a simple
five button menu interface to make any test as simple as possible. With the dBbox2
you can listen to and meter AES/EBU at many sample rates, analogue line and
microphone level signals with or without phantom power. The unit can analyse
sample rate, bits, status word and errors. It can send tone at various levels and
frequencies, send microphone input to analogue line or AES/EBU output at 48kHz or
96kHz, test phantom power, test MIDI transmit and receive, read and generate
linear timecode, generate up to 80mS of delay and more.
Some general information
The battery symbol on the top right of the display shows if you have enough battery
power for the current function. A solid block is a full battery. The dBbox2 has an
intelligent battery management system that switches off all electronics not in use for
a particular test. Different functions use varying amounts of power, generating
phantom from a 9 volt battery uses a lot of power and should be avoided for
extended periods unless on external power.
When on external power (via the mini USB connector) the battery symbol will
change to USB.
Press < and > together to toggle the LCD display backlight on and off.
Inserting a jack into the ¼ inch or 3.5mm headphone socket will cut the internal
loudspeaker.
Meter scale may be selected to either PPM or VU for analogue inputs and PPM,VU,
-18dBFS or -20dBFS for digital inputs.
At any point in the menu system pressing Vol- and Vol+ together will return you to
the main top menu.
When the volume is adjusted a ‘slider’ display will appear with visual indication of
the current volume setting.