User's guide octamic / octamic d 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.
User's guide octamic © rme 2 contents 1 introduction............................................................ 3 2 package contents .................................................. 3 3 brief description and characteristics ................... 3 4 technical specifications ...........................
User's guide octamic © rme 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...
User's guide octamic © rme 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 ( • spdif compatible (iec 60958) • lock range: 27 khz – 200 khz • jitter when synced to input signal: wordclock input • bnc, not t...
User's guide octamic © rme 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 w...
User's guide octamic © rme 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 correc...
User's guide octamic © rme 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 fol...
User's guide octamic © rme 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 (spd...
User's guide octamic © rme 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...
User's guide octamic © rme 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....
User's guide octamic © rme 11 9. Word clock 9.1 operation and technical background correct interpretation of digital audio data is dependent upon a definite sample frequency. Digi- tal signals can only be processed or transferred between devices if these share the same clock. Otherwise the signals a...
User's guide octamic © rme 12 9.2 cabling and termination word clock signals are usually distributed in the form of a network, split with bnc t-adapters and terminated with resistors. We recommend using off-the-shelf bnc cables to connect all devices, as this type of cable is used for most computer ...
User's guide octamic © rme 13 10. Technical background 10.1 ds - double speed when activating the double speed mode the adc module operates at double sample rate. The internal clock 44.1 khz turns to 88.2 khz, 48 khz to 96 khz. The internal resolution is still 24 bit. Sample rates above 48 khz were ...
User's guide octamic © rme 14 10.2 aes/ebu - spdif the most important electrical properties of 'aes' and 'spdif' can be seen in the below table. Aes/ebu is the professional balanced connection using xlr plugs. The standard is being set by the audio engineering society based on the aes3-1992. For the...
User's guide octamic © rme 15 11. Accessories part number description 37011 power supply for hdsp cardbus card robust and light weigth switching power supply, 100v-240v ac, 12v 1.25 a dc. 12. Warranty each individual octamic undergoes comprehensive quality control and a complete test at rme before s...
User's guide octamic © rme 16 14. Block diagram octamic.
User's guide octamic © rme 17 15. Ce / fcc compliance statements ce this device has been tested and found to comply with the en55022 class b and en50082-1 norms for digital devices, according to the european council directive on counterpart laws in the member states relating to electromagnetic compa...
