Installation ~ lcd programming, Rs-232 – ClearOne AP800 User Manual

Page 23

Installation

~ LCD Programming

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If your room has very low ambient noise, set the decay rate to fast. This

reduces the effects of echo and reverberation. If you hear ambient noise “swoosh”

down while the microphones decay, set this value to either medium or slow.

Manual Ambient

This setting is relevant only if the adaptive ambient mode is off on a mic channel (see

Adaptive Ambient on page 22). The best results are usually achieved when the

adaptive ambient mode is off. However, if you need to set the ambient level to a fixed

value, turn off the adaptive ambient mode on the desired microphone channels. A

manual ambient setting is a global setting and will affect all mics equally which are

set to adaptive ambient off. The ambient level ranges from 0dB to -70dB with the

default setting at -30dB.

To determine ambient level

Check your current gate ratio from the Gate Parameters menu. Make a note

of the value. Example: “Gate Ratio: 15.”

Select Manual Ambient from the Gate Parameters menu. Press Enter to

change the dB value.

Scroll up or down through the dB values until the mic gates on (gating

is indicated when the mic LED lights up). Individual room conditions

will determine whether you need to scroll up or down. When the LED

flickers, the dB value indicated on the LCD display is the ambient level

of the room.

Deduct the gate ratio value from the ambient level value you have just

determined. For example, if the ambient noise level of the room is

identified as -50dB and the gate ratio is 15, the manual ambient setting

would be -35dB.

RS-232

There are four RS-232 parameters that can be adjusted via the front panel LCD (see

Figure 2.12). These parameters are baud rate, flow control, modem mode, and clear

password.

Baud Rate

This parameter allows for the AP800’s RS-232 port communication rate to be

controlled. There are three settings: 9,600 (default), 19,200, and 38,400 baud (bps).

To set the baud rate, scroll through the three settings to select the desired baud rate,

then press Enter.

Any combination of
channels can be set in
adaptive ambient

manual ambient modes. Only
individual channels cannot be set
with both modes active.

✍

Figure 2.12. RS-232 submenu