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Related Manuals for ECdesigns PowerDAC-RXV
Summary of Contents for ECdesigns PowerDAC-RXV
- Page 1 PowerDAC-RXV User Guide 1 19 © 1990-2023 - All Rights Reserved - ECdesigns...
- Page 2 Introduction The PowerDAC-RXV is a discrete multi-bit DA converter without -any- amplifiers or buffer circuits in the signal path. PowerDAC RXV has integrated lossless volume control. Balanced programmable linear power-supply, bit shifts and resistor attenuator are used to generate the output signal.
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Page 3: Block Diagram
Block diagram 3 19 © 1990-2023 - All Rights Reserved - ECdesigns... - Page 4 The end result is an accurate and clean multi-bit power DA converter with low enough output impedance to directly drive the outputs. This way all lossy analogue circuits and related unavoidable degrading, typically required for conventional DACs can be avoided. 4 19 © 1990-2023 - All Rights Reserved - ECdesigns...
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Page 5: Technical Specifications
Volume 0 … 24, - = stand-by, P = bit perfect test passed. PowerDAC-RXV and The PowerDAC-RXV makes it possible to directly drive many headphones (32 Ohm and up) without any analogue amplifier or buffer in the signal path. In other words the headphones headphones are directly driven by a balanced power supply, a number of digital on / off... - Page 6 -7.5 dB 20 884 mV rms -6 dB 21 1.05 V rms -4.5 dB 22 1.25 V rms -3 dB 23 1.48 V rms -1.5 dB 24 1.77 Vrms 0 dB 6 19 © 1990-2023 - All Rights Reserved - ECdesigns...
- Page 7 PowerDAC-RXV PAGE 3 Integrated bit- With muting on (display:"-") and using supplied bit-perfect test wav files, the display will show "P" when test wav file is received by the PowerDAC-RXV without perfect tester modification. Auto-mute When no Toslink data is received the PowerDAC-RXV will switch to muting after about 15 minutes.
- Page 8 Download and unzip the bit-perfect test wav files using this link: pd-bitperfect-wav-files.zip * There is not enough CPU power left to check sample-rates > 96kHz If you bought a PowerDAC-RXV before October 2021 you will need to do a firmware upgrade to be able to use the bit-perfect test. 8 19...
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Page 9: Jumper Settings
Jumper settings Disconnect the mains power cable from the PowerDAC-RXV ! Below are the jumper settings for PowerDAC-RXV. Carefully remove or place jumpers using tweezers. 9 19 © 1990-2023 - All Rights Reserved - ECdesigns... -
Page 10: Firmware Update
Use tweezers to set the red jumpers to PROGRAM configuration (see Jumper settings on page 9). Download and unzip latest pdrs-firmware.zip Now connect a USB cable from the PowerDAC-RXV to your computer and start the STM32CubeProgrammer. 10 19 © 1990-2023 - All Rights Reserved - ECdesigns... - Page 11 Finally click on the Disconnect button to finish session. You can then close the STM32CubeProgrammer. Remove the USB cable between PowerDAC-RXV and PC. Set jumpers to the normal positions. After power-up PowerDAC-RXV the new firmware is used. 11 19 © 1990-2023 - All Rights Reserved - ECdesigns...
- Page 12 Use tweezers to set the red jumpers to PROGRAM configuration (see Jumper settings on page 9). Now connect a USB cable from the PowerDAC-RXV to your computer. Now copy the firmware file (see page 10) e.g. PDRS140.bin into the same directory containing the dfu-util executable.
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Page 13: Ir Remote Control
• Decrease volume • Mute/Un-mute The IR Remote Control can be recharged with the included USB mini cable. Connect to a 5V source like PC or 5V USB charger to charge. 13 19 © 1990-2023 - All Rights Reserved - ECdesigns... - Page 14 UT192 (Optical + ElectroTos output) The UT192 is an optional high-speed USB to Toslink converter that can be used with the PowerDAC-RXV or other Toslink DACs. It supports USB high-speed: 44.1kHz / 48kHz / 88.2kHz / 96kHz / 176.4kHz / 192kHz The UT192 is based on the XMOS processor.
- Page 15 RF ground loop noise and very large bandwidth noise in general. ElectroTos offers low jitter, blocks RF ground loop noise and offers a clean, band-limited output signal. 15 19 © 1990-2023 - All Rights Reserved - ECdesigns...
- Page 16 Bit shifts only drop bits from the 4 least significant bits. We use 2 voltages in the PowerDAC-RXV giving a total of 10 volume steps of 3 dB. We use 5 voltages in the PowerDAC-S giving a total of 13 volume steps of 3 dB.
- Page 17 If you are looking for simple music player for stand-alone or even multi-room to use with the PowerDAC-RXV checkout piCorePlayer. When run from an RPI4 you could connect your music to the RPI4 directly by USB or to NAS via network.
- Page 18 If you use playback software with our PowerDACs and you have successfully run bit-perfect test (44.1, 48, 88.2 and 96) please let us know so we can update bit-perfect player software here. 18 19 © 1990-2023 - All Rights Reserved - ECdesigns...
- Page 19 If you use playback hardware with our PowerDACs and you have successfully run bit-perfect test (44.1, 48, 88.2 and 96) please let us know so we can update bit-perfect player hardware here. 19 19 © 1990-2023 - All Rights Reserved - ECdesigns...
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