Clear-Com RS-603 (No longer available) User Manual

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R S - 6 0 3 / 6 2 3 / R B E L T P A C K S

Sidetone Control, Channel A

Sidetone Control, Channel B

To adjust the beltpack’s “sidetone,” or the level of one’s own voice in
the headset, insert a small flat-headed screwdriver into one of the two
holes labeled “sidetone” on the back of the beltpack, as shown in
Figure 4.

The upper control adjusts the sidetone for channel A. The lower
control adjusts the sidetone for channel B.

Turn the screwdriver until you can no longer hear any sidetone in the
headset. This is called the “null” setting.

When you turn the screwdriver again, either clockwise or
counterclockwise, the sidetone increases. Adjust the sidetone so that it
is somewhere in the mid-range of possible settings, at a level that feels
comfortable to you.

The need for an extreme sidetone setting to either limit could indicate
a problem with the overall intercom system, such as lack of
terminations or multiple terminations. A malfunctioning headset
could also be the cause. Do not force the sidetone adjustment control
past its stop points as this will damage it.

Note: The small raised dots next to the sidetone controls help you to
identify the correct control in darkened environments. The channel A
control has one raised dot adjacent to it. The channel B control has two
raised dots adjacent to it.