Adjusting Audio Level (Gain); Locking Or Unlocking The Controls - Lectrosonics SMQV Instruction Manual

SMQV

Adjusting Audio Level (Gain)

The control panel Modulation LEDs indicate the audio
level and limiter activity. Once set, the transmitter's
audio level setting should not be used to control the
volume of your sound system or recorder levels. This
gain adjustment matches the transmitter gain with the
microphone's output level, the user's voice level and the
position of the microphone. The audio input level (gain)
is adjusted with the unit in the Standby Mode or while
powered up while observing the LEDs.
It is desirable to to set the gain so that some limiting
occurs on louder peaks. The limiter is very transparent
and its effect is not audible until the system is close to
overload. In other words, don't be shy about turning up
the gain. In fact, it is a good idea to turn the gain up to
maximum and listen for distortion or compression to get
a feel for how much headroom the system actually has.
Signal Level -20 LED
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 db
Note: Different voices will usually require different
gain settings, so check this adjustment as each
new person uses the system. If several different
people will be using the transmitter and there
is not time to make the adjustment for each
individual, adjust it for the loudest voice.
1) With the transmitter powered off, plug in the mi-
crophone and make sure the connector is firmly
seated.
Warning: If the systems is powered up while
connected to a live sound system, be careful
to turn the sound system level down first or
severe feedback can occur.
2) Place the transmitter in Standby Mode or turn it on
for normal use.
3) Position the microphone in the location where it will
be used in actual operation.
4) Observe the Modulation LEDs while speaking or
singing into the microphone at the same voice level
that will be used during use. While holding the AU-
DIO button, press the UP or DOWN arrow buttons
until the both the -20 and -10 LEDs glow green,
with the -20 LED occasionally flickering red. This
will maximize the signal to noise ratio of the system
with full modulation and provide subtle limiting to
prevent overload and audible compression.
5) If the unit was set up in Standby Mode, it will be
necessary to turn the transmitter off, then power it
up again in normal operation so the RF output will
be on. Then the other components in the sound or
recording system can be adjusted.
10
-10 LED
Off Off
Green Off
Green Green
Red Green
Red Red

Locking or Unlocking the Controls

Control Panel Locked
buttons to start the countdown timer. When the timer
reaches zero, "Loc" is displayed and the controls are
locked. Settings can be reviewed but not changed.
Once the transmitter is locked, it cannot be unlocked or
powered off using the buttons. The only ways to unlock a
locked transmitter are to remove the battery or unlock it
using the remote control. The remote control will work only
if the transmitter was previously configured to respond
to the remote control. The unit will always power up in
"unlocked" mode.
The Lock mode protects the
transmitter from accidental
changes to its settings.
Simultaneously press both
the Up and Down arrow
LECTROSONICS, INC.