RME OCTAMIC II [13/32] Rear panel

User’s Guide OctaMic II © RME

8. Rear Panel

8.1 Connectors

MICROPHONE / LINE INPUTS: 8 8 Neutrik XLR / TRS combo jacks. Thanks to the servo bal-

anced designs and a high maximum input level (maximum input level XLR +14 dBu, TRS +21

dBu) the inputs are universally applicable.

LINE LEVEL OUTPUTS: 8 TRS (stereo) jacks. The electronic output stage is built in a servo

balanced design, handling monaural (unbalanced) and stereo jacks (balanced) correctly.

IEC receptacle for power connection. The specially developed, internal hi-performance switch

mode power supply lets the OctaMic II operate in the range of 100V to 240V AC. It is short-

circuit-proof, has an integrated line filter, is fully regulated against voltage fluctuations, and sup-

presses mains interference.

8.2 DIP Switches

The DIP switches are used to configure

the OctaMic II's digital section. The follow-

ing diagram, also printed on the back of

the unit, shows the meaning of all possi-

ble switch positions.

DIP Switch Function

1 External synchronization source AES (D-sub) or word clock (BNC)

2 Clock internal (Master) or external (Slave)

3 Internal Clock 44.1 kHz or 48 kHz

4 Activates Double Speed Mode*

5 Activates Quad Speed Mode*

6 AES output state Professional or Consumer

*Note on DIP switch 4/5:

At internal clock, the switches DS and QS multiply the value set with switch 3 by a factor of 2 or

4. So if switch 3 is set to 48 kHz, switch 4 will turn it into 96 kHz, switch 5 turns it into 192 kHz.

At external clock switch 3 is of no meaning, because the unit is synchronized to the incoming

clock. However, switch 4 and 5 pre-define the frequency range to Single Speed, Double Speed

or Quad Speed. For example if the OctaMic shall operate at 176.4 or 192 kHz, switch 5 has to

be set to the lower position. The OctaMic will now generate an output signal in the Quad speed

range (176.4 or 192 kHz), even with a word clock input signal of only 44.1 kHz, or an AES input

signal of 96 kHz.

With external synchronization active (switch 2 down) and both switches 4 and 5 in lower posi-

tion, the function 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.