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Summary of Contents for RME Audio OctaMic II
- Page 1 User’s Guide OctaMic II ™ SteadyClock Professional Mic / Line Preamp and AD-Converter 8-Channel Microphone / Line Preamp with Line Outputs 8-Channel Analog to AES / ADAT Interface 24 Bit / 192 kHz Digital Audio AES-3 24 Bit Interface...
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Page 2: Table Of Contents
13.4 Digital ..............25 13.5 General ..............25 13.6 Connector Pinouts..........26 Technical Background 14.1 Terminology ............28 14.2 DS – Double Speed ..........29 14.3 QS – Quad Speed..........29 14.4 AES/EBU – SPDIF ..........30 14.5 SteadyClock ............31 Block Diagram ............32 User’s Guide OctaMic II © RME... -
Page 3: Important Safety Instructions
When mounting in a rack, leave some space between this device and others for ventilation. Unauthorized servicing/repair voids warranty. Only use accessories specified by the manufacturer. Read the manual completely. It includes all information necessary to use and operate this device. User’s Guide OctaMic II © RME... - Page 4 User’s Guide OctaMic II © RME...
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Page 5: General
User’s Guide OctaMic II General User’s Guide OctaMic II © RME... -
Page 6: Introduction
• 2 x ADAT Out, 8 channels @ 96 kHz • SNR ADC: > 110 dBA • Sample rate range ADC: 28 kHz – 200 kHz • THD AD: < 0.00032 %, < -110 dB User’s Guide OctaMic II © RME... -
Page 7: Accessories
4. Accessories RME offers several optional components for the OctaMic II: Part Number Description OK0050 Optical cable, Toslink, 0.5 m OK0100 Optical cable, Toslink, 1 m OK0200 Optical cable, Toslink, 2 m OK0300 Optical cable, Toslink, 3 m OK0500 Optical cable, Toslink, 5 m... -
Page 8: Warranty
All entries in this User’s Guide have been thoroughly checked, however no guarantee for cor- rectness can be given. RME cannot be held responsible for any misleading or incorrect informa- tion provided throughout this manual. Lending or copying any part or the complete manual or its contents as well as the software belonging to it is only possible with the written permission from RME. - Page 9 For this the device has to be sent free to the door to: IMM Elektronik GmbH Leipziger Straße 32 D-09648 Mittweida Germany Shipments not prepaid will be rejected and returned on the original sender's costs. User’s Guide OctaMic II © RME...
- Page 10 User’s Guide OctaMic II © RME...
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Page 11: Usage And Operation
User’s Guide OctaMic II Usage and Operation User’s Guide OctaMic II © RME... -
Page 12: Front Panel
Pressing the key again for two seconds deactivates the Clip Hold mode. Hi Gain / +4 dBu / -10 dBV: Defines the reference level of the Line Level Outputs, equalling a full scale level of the AD-converters. See chapter 10.2. User’s Guide OctaMic II © RME... -
Page 13: Rear Panel Connectors
Follow Clock (FC) is active. In this case the OctaMic II follows the input clock 1:1. A further configuration of the current sample rate range (Single, Double or Quad Speed) is not required. User’s Guide OctaMic II © RME... -
Page 14: External Synchronization
The word clock input is activated by DIP switches 1 and 2. Both switches must be set to their lower position. Thanks to RME's Signal Adaptation Circuit, the word clock input still works correctly even with heavily mis-shaped, dc-prone, too small or overshoot-prone signals. Thanks to automatic signal centering, 300 mV (0.3V) input level is sufficient in principle. -
Page 15: Inputs And Outputs
User’s Guide OctaMic II Inputs and Outputs User’s Guide OctaMic II © RME... -
Page 16: Analog Inputs / Outputs
AD-converter. Therefore the TRS inputs are true full level Line inputs, and the unit can also be used as Line amplifier. The TRS jacks are free of phantom power. The unbalanced input impedance is 5 kOhm. User’s Guide OctaMic II © RME... -
Page 17: Line Out
The same is true and even more efficient at –10 dBV. In this case the output level is reduced by around 14 dB – the same happens to the basic noise of the unit! User’s Guide OctaMic II © RME... -
Page 18: Digital Outputs
2 channels per AES wire. The effective sample frequency equals the clock on the AES wire. In case a conversion from/to Single, Double and Quad Wire is required, the RME ADI-192 DD, an 8-channel universal sample rate and format converter, is highly recommended. -
Page 19: Adat Optical
– you don't need to think about it. 96 kHz capable ADAT hardware, like all current RME digital interfaces, re-combine the data automatically. The user (and the DAW software) does not see any split data, but just single channels at the expected double sample rate. -
Page 20: Word Clock
22 MHz from a slow word clock of 44.1 kHz is no problem anymore. Additionally, jitter on the input signal is highly rejected, so that even in real world usage the re-gained clock signal is of highest quality. User’s Guide OctaMic II © RME... -
Page 21: Cables And Termination
Connect the free end to the next device in the chain via a further BNC cable. The last device in the chain should be terminated using another T-adapter and a 75 Ohm resistor (available as short BNC plug). Of course devices with internal termination do not need T-adaptor and termi- nator plug. User’s Guide OctaMic II © RME... - Page 22 User’s Guide OctaMic II © RME...
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Page 23: Technical Reference
User’s Guide OctaMic II Technical Reference User’s Guide OctaMic II © RME... -
Page 24: Technical Specifications
• SPDIF compatible (IEC 60958) • Accepts Consumer and Professional format • Lock Range: 27 kHz – 200 kHz • Jitter when synced to input signal: < 1 ns • Jitter suppression: > 30 dB (2.4 kHz) User’s Guide OctaMic II © RME... -
Page 25: Digital Outputs
• Dimensions without rack ears/handles (WxHxD): 436 x 88 x 235 mm (17.2" x 3.46" x 9.3") • Weight: 2 kg ( 4.4 lbs) • Temperature range: +5° up to +50° Celsius (41° F up to 122°F) • Relative humidity: < 75%, non condensing User’s Guide OctaMic II © RME... -
Page 26: Connector Pinouts
3/4- 5/6+ 5/6- 7/8+ 7/8- D-Sub Signal 1/2+ 1/2- 3/4+ 3/4- 5/6+ 5/6- 7/8+ 7/8- D-Sub GND is connected to pins 3, 6, 9, 12, 14, 17, 20, 23. Pin 1 is not connected. User’s Guide OctaMic II © RME... - Page 27 Sleeve = GND The servo balanced input and output circuitry allows to use monaural TS jacks (unbalanced) with no loss in level. This is the same as when using a TRS-jack with ring connected to ground. User’s Guide OctaMic II © RME...
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Page 28: Technical Background
The Quad Wire method allows to transmit two channels at up to 192 kHz via ADAT. The method is referred to as S/MUX4. Note: All conversions of the described methods are lossless. The existing samples are just spread or re-united between the channels. User’s Guide OctaMic II © RME... -
Page 29: Ds - Double Speed
An implementation of the ADAT format as double S/MUX (S/MUX4) results in only two channels per optical output. Therefore the OctaMic II does not support this mode at the ADAT outputs. The AES outputs provide 192 kHz as Single Wire only. User’s Guide OctaMic II © RME... -
Page 30: Aes/Ebu - Spdif
The table shows that a Professional-coded signal would lead to malfunctions for copy prohibi- tion and emphasis, if being read as Consumer-coded data. Nowadays many devices with SPDIF input can handle Professional subcode. Devices with AES3 input almost always accept Consumer SPDIF (passive cable adapter required). User’s Guide OctaMic II © RME... -
Page 31: Steadyclock
Latest circuit designs like hi-speed digital synthesizer, digital PLL, 100 MHz sample rate and analog filtering allow RME to realize a completely newly developed clock technology, right within the FPGA at lowest costs. The clock's performance exceeds even professional expectations. -
Page 32: Block Diagram
15. Block Diagram User’s Guide OctaMic II © RME...
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