3.5. BC2203MHL. Analog MIC/LIN inputs and headphone outputs module.
General description.
The BC2203MHL board is capable of managing four TDM IN bus time-slots to insert four analog
mono signals into the system with mic or line level, and can furnish 48 volts of PHANTOM
power to the microphones that require it. It also manages four TDM OUT bus time-slots to
extract two signals from the system for two stereo headphones.
This board is inserted into the rear part of the BC2000DF rack, where it occupies two slots.
Panel description.
this LED will turn on when the
system starts and, depending on its status, it will
indicate during normal operation:
- Configured and active board: fast blinking.
- Not configured board: slow blinking.
- Board start error: LED on and fixed.
- Board configured in backup mode: LED off.
'1' RJ45 type connector: Analog monophonic input
1 with mic or line level, balanced by transformer.
'2' RJ45 type connector: Analog monophonic input
2 with mic or line level, balanced by transformer.
'3' RJ45 type connector: Analog monophonic input
3 with mic or line level, balanced by transformer.
'4' RJ45 type connector: Analog monophonic input
4 with mic or line level, balanced by transformer.
'5' RJ45 type connector: 2 analog outputs for two
stereo headphones. These outputs can be configured
to accept low impedance (8-ohm) headphones.
*
This operation way of 'HW ERROR' LED is valid for 2.23
microcontroller module firmware version (and later versions).
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