Description
Analogue input
The DLCP has two (stereo) analogue balanced audio inputs. The analogue input signal is buffered and amplified by a single-stage, fully differential programmable gain amplifier and then converted to digital by the ADC. The ADC is always directly clocked by the on-board oscillator, a low noise Colpitts oscillator with a locally regulated supply, causing less jitter. After the analogue to digital conversion the signal is processed by the DSP.
Digital input
The DLCP contains four separate digital inputs, permitting the use of different interconnection standards (AES/EBU and S/PDIF). Optimal clock quality is insured by routing the clock through separate IC’s from the data signals, and by local regulation of all supplies on the AES input circuit.
Incoming AES / S/PDIF is send to the DSP through an asynchronous sample rate converter (ASRC) to reduce jitter.
When the input is set to “Auto detect”, the ASRC chip scans its inputs for whichever digital signal is present. The input source is automatically switched to digital when present, using the priority described below. If the digital audio source is removed, the input will be automatically switched back the last chosen analogue input.
Auto detect input priority high to low:
1) AES
2) SPDIF
3) USB_audio
4) Optical
Digital output
The DLCP contains two separate digital outputs, AES/EBU and S/PDIF. The selected digital input is directly send to both digital outputs. (Without filtering)
DSP
The DSP filtering can be changed by Hypex Filter Design (HFD) software. The digital outputs from the DSP are fed to the DACs. The DAC chip receives data from the DSP and clock either from the crystal oscillator or from the digital input section. The digital signal is then converted to analogue by the DAC. The post filter is executed twice, providing a balanced load to the DAC and delivering a high output level to the power amplifier.
A microcontroller controls the DSP and other ICs and I/O’s on the PCB, communicates with the control board, PC and/or other DLCP’s that may be attached. When the module is powered on it will automatically start up with the last settings. All settings, like volume and source selection, are stored after a change is made.
Digital and analog connections as well as pre-amp fuctionality may be achieved with a separate Add-On Set.
Supply +/-18V DC (+/- 15,5V to 26V)
DLCP / DLCP control panel Software
(provided “as is”, we disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product, respect Hypex documentation and Hypex software copyrights).
UNZIP firmware before uploading
A DLCP Control Firmware V1.4.hex
DLCP Control Firmware V1.5b.hex(BETA,prevents bootloader mode)
DLCP Control Firmware V1.6b.hex(BETA,prevents bootloader mode , combi display)
