User's Manual

5.2 VAA (Voice Activated Attenuation) Adjustment

The VAA circuit reduces the level of the order taker’s outbound audio that is picked

up by the outside microphone and sent back to be heard in the order taker’s

headset. This is sometimes referred to as “external loop around” or “echo.”

Note: Misalignment of the VAA circuit can result in complaints of echo, feedback or

fluctuating inbound audio levels.

To activate the circuit, S13 switch #1 (See Figure 28, page 37) must be ON.

The factory default setting is ON.

VAA Threshold Level:

This is the volume level of the order taker’s voice required to activate the VAA

circuit. During normal operation, the inbound audio level should be reduced when

the order taker speaks to the customer, and should recover when the order taker

stops speaking. If speaking to the customer does not reduce the inbound level, turn

the VAA Level control on the front panel (See Figure 2, page 2) clockwise until the

inbound audio is reduced while speaking to the customer. If the inbound is

reduced anytime the outbound channel is open, regardless if the order taker is

speaking or not, turn the VAA Level control counterclockwise, so the inbound is

reduced only when the order taker is speaking.

VAA Attenuation Level:

This is the amount the inbound volume level is reduced when the order taker

speaks to the customer. The attenuation level is factory set at 15dB, and should

not require adjustment. If the order taker cannot hear the inbound audio at all

while speaking, the attenuation level may be adjusted. To increase the inbound

level while the order taker is speaking, turn R348 (See Figure 26, page 35)

counterclockwise. To reduce the inbound level while the order taker is speaking,

turn R348 clockwise. For assistance, call HME at 1-800-848-4468.