RME Audio OctaMic Operation & User’s Manual

Portable Professional Mic Preamp 8-channel Microphone / Line Preamp with Line Outputs Universal Power Supply Input Optional 8-Channel 192 kHz 24 Bit ADC AES-3 24 Bit Interface ...

2 Contents 1 Introduction............................................................ 3 2 Package Contents .................................................. 3 3 Brief Description and Characteristics................... 3 4 Technical Specifications ....................................... 3 4.1 Analog............................... ...

3 1. Introduction Thank you for choosing the OctaMic. This unique Mic Preamp allows to connect any kind of microphone to any line level inputs. Thanks to the option of battery-powered operation and removable rack ears, the OctaMic makes an ideal companion to the Hammerfall DSP System in mobile recording situations. But excellent s ...

4 4.2 ADC Modul AES Input • 1 x XLR via 25 pin D-sub, transformer balanced, ground-free, according to AES3-1992 • High-sensitivity input stage (< 0.3 Vss) • SPDIF compatible (IEC 60958) • Lock range: 27 kHz – 200 kHz • Jitter when synced to input signal: < 2 ns Wordclock Input • BNC, not terminated (10 kOhm), switch ...

5 6. Operation and Usage 6.1 Controls The front of the OctaMic has the gain knobs, switches for low cut, phantom power and phase, Clip Hold, Reference Level and several status LEDs: +48V (LED) lights up when phantom power is active. Phantom power should only be activated when using condensor microphones which require such a power ...

6 6.2 Mic/Line Inputs The OctaMic offers 8 balanced Mic and Line inputs via 1/4" TRS (stereo) and XLR combo jacks. The electronic input stage is built in a servo balanced design which handles monaural and stereo jacks correctly. When used unbalanced it automatically corrects the gain by 6 dB. When using unbalanced cables with ster ...

7 7. The ADC Module The ADC Module replaces the analog D-sub output by a high quality digital converter card. The card includes clock generation, clock recovery (SteadyClock) and AD-conversion. 7.1 DIP Switches The DIP switches are used to configure the ADC Module. The following diagram, also printed on the back of the unit, shows ...

8 7.2 External Synchronization The inputs of the ADC Module are used for external synchronization only. In case the clock shall not be generated internally (operation mode Master), an external synchronization (opera- tion mode Slave) is available via word clock or AES (SPDIF). SteadyClock, integrated into the ADC Module, guarantes ...

9 To achieve this, pins 2 and 3 of an XLR plug are being connected to the two contacts of a Phono/RCA plug. The ground shield of the cable is only connected to pin 1 of the XLR plug. Using the AES input, a synchronization is again possible at half, quarter, double and quad sample rates, see above. 8. Digital Outputs 8.1 AES – D- ...

10 Pinout D-sub Signal In 1/2+ In 1/2- In 3/4+ In 3/4- In 5/6+ In 5/6- In 7/8+ In 7/8- D-sub 24 12 10 23 21 9 7 20 Signal Out 1/2+ Out 1/2- Out 3/4+ Out 3/4- Out 5/6+ Out 5/6- Out 7/8+ Out 7/8- D-sub 18 6 4 17 15 3 1 14 GND is connected to pins 2, 5, 8, 11, 16, 19, 22, 25. Pin 13 is not connected. 8.2 ADAT Optical The ADC Module p ...