9
ULTRALINK ULM2000
3.6 Auto Mute
If the transmitter is turned on, off or switched to another channel without first muting the receiver, or if
the transmission fails due to weak batteries, audible noise will result. Even if the squelch circuit is
turned on at the receiver end, it still requires some time to react, and such noise can not be suppressed
safely.
To bridge this latency time, the ULM2000 offers a practical Auto Mute function:
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When the ULM2000 is being turned off, when you are switching channels or during low-battery indication,
an inaudible send signal is being transmitted.
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The receiver ULR2000 recognizes this signal and automatically mutes the output before the transmitter
is actually turned off, switched to another channel or before it powers down on its own due to battery
charge being too low.
For the Auto Mute function to work, it has to be activated on both the transmitter and the
receiver!
Activating/deactivating the Auto Mute function
1.
Engage MUTE. The transmitter can now be switched into the programming mode.
2.
Turn the selection switch to 0 and confirm your selection by keeping the POWER switch pressed for 2
seconds. As a confirmation, the LED blinks slowly once and then once again with medium tempo. The
transmitter is now in the programming mode and waits for you to enter a one-digit number.
3.
Select one of the following two digits on the selection switch:
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Activate Auto Mute: select 7
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Deactivate Auto Mute: select 8
If a valid selection is made, the LED blinks quickly once to confirm your selection. This way, you can be
sure that a correct value is entered (in regard to preset, MicGain and Auto Mute selection) even before
confirming your selection.
Selecting the values 1 through 4 changes the preset settings (ch. 3.4). Selecting 5 or 6 changes
the Mic Gain settings (ch. 3.5). Values 9 and 0 are invalid.
4.
Confirm your selection by briefly pressing the POWER button.
5.
If the selection you made is valid, the LED blinks quickly once again. An invalid selection is indicated
with 5 quick blinks, and the unit is immediately no longer in the programming mode. In this case, start
anew with step 2.
After a brief break, a second blink code is given:
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Auto Mute activated: the LED blinks once at middle tempo.
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Auto Mute engaged: the LED blinks twice at middle tempo.
If no entry is made for more than 5 seconds (either on the selection switch or by pressing the
POWER button), the LED blinks quickly 5 times, and the programming mode is aborted.
6.
After a second brief blink break, an additional blink code is given as a confirmation:
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Two slow blinks signal that the Auto Mute setting was changed. The transmitter leaves the
programming mode.
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If the setting for Auto Mute could not be stored, the LED blinks quickly 5 times. In this case, start
anew with step 2.
7.
Disengage MUTE.
3.7 Turning the microphone off
To turn of the transmitter, keep the POWER button pressed for 2 seconds. A long blink confirms that
microphone is being turned off.
The transmitter stores the frequency and the channel settings. These parameters are restored
to these same values the next time you turn the unit on.
3. HAND-HELD TRANSMITTER OPERATION
