Rear Panel Connectors; Rear Panel 8.1 Connectors; Dip Switches - RME Audio OctaMic II User Manual

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.
User's Guide OctaMic II © RME
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