Tigertronics SignaLink Installation & Operation Manual page 10

buttons to be disabled until after you have recorded a
sound.
- DETAILED PROCEDURE TO SET LEVELS -
This is a "Step-By-Step" procedure to assist those who are
not already familiar with setting sound card levels using the
Windows Volume Control Panel. Before you operate your
SignaLink on the air, you will want to adjust the Receive and
Transmit Audio levels. Incorrect adjustment of these levels
can cause poor reception, over-modulation, or improper
operation. This procedure will show you how to adjust your
sound card and radio audio levels for optimum performance.
Before you can adjust the audio levels, the SignaLink must
be connected to the sound card and radio. Both the
SignaLink and the radio should be powered ON and a
communications program that you have selected should
already be installed on your computer. Note that we will be
using the communications program to generate the audio
tones that are used to adjust the level controls, so CW
programs should NOT be used unless they have a continuous
"Tune" mode. A program like DigiPan is ideal.
Transmit Audio
Follow the steps below to set your transmit audio level.
Start the communication program and leave it in
•
Receive mode.
Run the Windows Volume Control program by clicking
•
on the Start Button and selecting Programs, Accessories,
Multimedia (or Entertainment) and then Volume
Control. The Volume Control panel should look similar
to the one shown in Figure-6.
Figure 6 – Volume Control Panel
From the Options menu, select Properties to display the
•
Properties page. In the "Adjust Volume For" window,
select Playback.
In the "Show the following volume controls" window,
•
verify that the Master Volume and Wave level controls
are selected. When you are done, the Properties Page
should look like the one shown in Figure-7.
NOTE: The Master Volume control may be simply
labeled "Volume Control".
Figure 7 – Playback Properties
Click OK to close the Properties page.
•
Set the sound card's Master Volume control to
•
approximately 75% of full volume. Set the sound card's
Wave level control to minimum.
The Balance controls should be left at their center
•
position.
Verify that the Master Volume and Wave level controls
•
are NOT muted (check box). Any other controls that
you are not using can be muted to reduce the amount of
noise picked up by the sound card.
Verify that all special audio processing features are
•
turned OFF. This includes features like "Mic Boost",
"Bass Boost", "Audio Expander", etc. These features
must be turned OFF or they will distort your transmit
audio.
Put your communications program into transmit mode.
•
If the program has a "Tune" or "Adjust Transmit Drive"
mode, then select it.
The SignaLink's PTT light should be OFF at this point.
•
Now, slowly slide the sound card's Wave level control
up until the PTT LED turns ON. When the LED turns
ON, note the position of the slider and then increase its
level by about 50%. The sound card's volume level is
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