MPAII Installation and Operations Manual Page 13
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Step 4 — Auto Mix Switches
The auto-mix switches [12] (See Figure 20, below.) are located on the front
panel immediately under the MIC Channel Level Controls [13].
To place an individual microphone (1–8) in auto-mix mode, slide the
corresponding auto-mix switch to the right (Figure 21, left).
To turn off automatic mixing for an individual microphone, slide the
corresponding auto-mix switch to the left.
Step 5 — Baud Rate
The MPAII is shipped from the factory set at a baud rate of 9,600. If you are
using the supplied setup software with a PC, most PCs operate at a baud rate
of 9,600. If this is sufficient, go to Step 6 — Setting Levels (below).
If, however, you need to change the baud rate, follow the steps below:
Step 1
Locate the baud-rate dip switches [3] (See Figure 16, previous page.) on the
MPAII’s back panel.
Step 2
Set the dip switch to the desired baud rate using either the label located above
the baud rate select switch (Figure 22, left).
BAUD RATE NOTE:
If the dip switches are adjusted to change the baud rate, the unit will need to be
power cycled for the baud-rate change to take effect.
Step 6 — Setting Levels
Step 1
Put the MASTER MIX control [10] (Figure 20, above.) in the NORM
position (See Figure 23, left.) and adjust the controls for MIC 1–8 so that, at
each microphone, the MASTER MIX LED [3] flashes green during normal
speech. Remember, if more overall gain is needed for the microphones, it is
better to increase the levels of MIC 1–8 and keep the MASTER MIX level
near the NORM position.
GATING LED NOTE:
The MIC 1–8 LEDs do not indicate audio level, but the microphone gate status.
Step 2
Adjust the AUX IN control [11] (See Figure 20, above.) so the MASTER
Figure 21. MPAII auto-mix switches
Figure 22. MPAII baud-rate dip switches
Figure 23. MPAII control norm position
Figure 20. MPAII front-panel controls
