Clear-Com HME DX121 - Manual (Page 31)

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Volume Up/Down
• Volume Up Adjustment — Each time you press and release the volume-up S button, you will hear a
higher pitch beep in the earpiece as the volume increases one step. If you press and hold the volume-up
button, you will hear beeps of ascending pitch as the volume steps up to maximum. When maximum volume
is reached, you will hear “maximum” repeating until you release the volume-up button.
• Volume Down Adjustment — Each time you press and release the volume-down T button, you will
hear a lower pitch beep in the earpiece as the volume decreases one step. If you press and hold the volume-
down button, you will hear beeps of descending pitch as the volume steps down to minimum. When
minimum volume is reached, you will hear rapidly repeating beeps until you release the volume-down button.
Microphone Gain Adjustment
Some users talk louder or softer than others. To allow for this, microphone gain adjustment is provided.
To increase microphone gain — Press the volume-up S button while holding down the ISO button in
the normal operating mode. The microphone gain increase can be monitored through sidetone, or preferably by
someone else on a COMMUNICATOR
®
or at the Base Station.
To Decrease microphone gain — Press the volume-down T button while holding down the ISO button
in the normal operating mode. The microphone gain decrease can be monitored through sidetone, or preferably
by someone else on a Communicator or at the Base Station.
NOTE: You will hear “Maximum” if you attempt to go higher than maximum microphone gain.
You will hear two beeps if you attempt to go lower than minimum microphone gain.
Microphone gain will be saved in non-volatile memory and does not require readjustment each time
the power is turned on.
Change Batteries
When a battery becomes weak, a voice in the Headset will say “Change battery.” When this happens, remove
the battery from the headset by carefully sliding the battery-release latch and lifting the battery out.
When replacing a battery in the Headset, place the end of the battery with the metal contacts into the battery holder
on the Headset, in the same position as the battery you removed. Press the top of the battery carefully into the
battery holder until it snaps in place under the battery-release latch.
Recharge batteries according to the instructions on page 9.
Battery-
release latch
Battery