Channel B uses only the BNC labeled In-B:
A and B Microphone Ampli
fi
er
An onboard two channel ampli
fi
er provides gain for the onboard analog input signals (MIC-A,
DIFF-A, In-A, and In-B). The switch located to the left of the gain control knob allows the current
gain setting to be applied (if set to Amp) or bypassed completely (if set to Byp).
Gain
The front panel gain control knob can be used to the control
overall signal level of both channels from 20 to 65 dB in 5 dB
steps.
Use only one input for channel A at a time. Attempting to input signals from multiple sources will produce an
erroneous signal.
Important
When the gain is enabled, analog input signals MIC-A and DIFF-A are differential. Since the differential signals are
summed a signal gain of 6 dB will be inherently applied. If the ampli
fi
er is bypassed, common mode rejection is
disabled.
Important
To prevent clipping caused by a DC offset, the ampli
fi
er is AC coupled when the gain ampli
fi
cation is in use.
Note
RZ6 Multi I/O Processor | 11
