Receive Level Adjustment
Audio Level Adjustment
This chapter describes how to adjust the audio levels of the Model 6300.
The procedures in this chapter refer to the Gateway and Link that is receiving external
audio as the Receiving Link, and refers to the paired Gateway and Link that is
transmitting external audio as the Sending Link.
Receive Level Adjustment
♦ To adjust the receive level
1. With a PC, use its web browser to navigate to the IP address of the Receiving
Link and to the correct Link Level Adjustment web page (Link 1 for a Model
6301, or Link 1 or 2 for a Model 6302).
2. Note: If the Receiving and Sending Links are operationally paired, this step may
result in an attempted transmission at the Sending Link.
At the Receiving Link, connect a constant tone signal, such as a 1000 Hz sine
wave, at 60% of peak voice level (or 60% deviation if an FM radio channels is
being used) to the appropriate balanced or unbalanced receive audio input of the
Link being adjusted (make sure this is the Gateway and Link number, matching
the Link Level Adjustment web page shown on the PC’s web browser, and
make sure you are using the balanced or unbalanced receive input signal that the
Gateway has been configured to use). In the absence of a 1000 Hz tone, a DTMF
tone may be used instead.
a. While the signal is present, click the Start Automatic Adjust button of the
Link Level Adjustment web page. Within three seconds the unit should
automatically adjust its receive gain to adapt to the provided signal. This can
be confirmed by a change in the value shown in the web page’s Receive
Gain text box. Write down the level appearing in the Receive Gain box.
This may be used in a subsequent step.
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