BC 2000
DIGITAL
Audio Routing, Mixing and Processing System for Program Production Centers
HARDWARE MANUAL
14
Other characteristics and features.
-
Internal warning signal indicating a failure in one of the power supplies. If a failure occurs, the
“ALARM” LED on the BC2240 controller board will light up.
-
Power feed circuit designed to support hot-swapping operations.
-
Digital adjustment of analog gain (±12 dB) in the 4 inputs.
-
Digital adjustment of digital gain (-40/+24 dB) in the 4 inputs.
Programming jumpers.
This board has a series of internal programming jumpers (PJ). By default, this board is
configured to work with high impedance headphones (higher than 150
Ω
). If you use low
impedance headphones (below 150
Ω
), you will need to pull the board out and change the J1,
J2, J3 and J4 jumpers on the board marked "472-001-311" to position 2-3.
Firmware modules.
At the firmware level, this board is made up of the following modules:
-
PIC microcontroller: manages board communications and start-up.
-
FPGA programmable device: manages the converters and the TDM bus.
The firmware versions can be brought up to date by using the “BC2000D Firmware Upgrade”
software application.
Signal layout in the RJ45 connectors of the board.
NOTE: Pin layout corresponds to T568B standard.
BC2203MH technical specifications.
Analog inputs:
-
24-bit, 48 kHz A/D converters.
-
PHANTOM power supply voltage: +48 V (software configurable).
Analog outputs:
-
24-bit, 48 kHz D/A converters.
-
Capacity to feed high and low impedance headphones.
Bandwidth:
-
Mic and line inputs: 40-20,000 Hz @ +/- 0.5 dB.
20-20,000 Hz @ +/-1.5 dB.
Distortion:
-
Mic and line inputs (nominal levels): < 0.1% @ 50-20,000 Hz.
< 0.39% @ 20-20,000 Hz.
Pin
'1' Inputs '2' Outputs '3' GPI
'4' GPO
8
IN 2 V-
HP 1 GND GND GPI2 GND GPO2
7
IN 2 V+
HP 1R
GPI2
GPO2
6
IN 3 V-
HP 2 GND GND GPI3 GND GPO3
5
IN 4 V-
HP 2 GND GND GPI4 GND GPO4
4
IN 4 V+
HP 2R
GPI4
GPO4
3
IN 3 V+
HP 2L
GPI3
GPO3
2
IN 1 V-
HP 1 GND GND GPI1 GND GPO1
1
IN 1 V+
HP 1L
GPI1
GPO1
Chassis AGND
AGND
AGND
AGND
