Controls And Functions; Lcd Screen; Power Led; Audio Input Jack - Lectrosonics SMQV Instruction Manual

SMQV

Controls and Functions

Modulation
LEDs
Battery
Compartment
Cover Plate
Battery
Compartment
Thumb Screw
PWR LED

AUDIO Button

LCD Screen

The LCD is a numeric-type Liquid Crystal Display with
screens for adjusting power, frequency, audio level and
low frequency audio roll-off. The transmitter can be
powered up with or without the RF output turned on. A
countdown appears in the LCD when powering on and
off, allowing the transmitter to be turned on without RF
for adjustments, and to prevent accidentally turning it off
with momentary button presses.

Power LED

The PWR LED glows green when the battery is good.
The color changes to red when there is about 30
minutes of operation left with the recommended lithium
battery. An alkaline battery will have about 20 minutes
of life left. When the LED begins to blink red, there are
only a few minutes of life.
Note: A NiMH rechargeable battery will give little
or no warning when it is depleted. If you wish
to use NiMH batteries, we recommend trying
fully charged batteries in the unit and using the
battery timer feature available in most receivers to
determine the available operating time.
A weak battery will sometimes cause the PWR LED to
glow green immediately after the TX is turned on, but
will soon discharge to the point where the LED will turn
red or the unit will turn off completely. When the trans-
mitter is in SLEEP mode, the LED blinks green every
few seconds.

Audio Input Jack

The Servo Bias input circuitry accommodates virtually
every lavaliere, handheld or shotgun microphone avail-
able, plus line level signals.
Battery Compartment and Thumb Screw
The large knurled thumbscrew is used to release or
secure the Battery Compartment Cover Plate.
6
LCD
UP Arrow

Antenna

Jack
Audio
Input Jack
DOWN Arrow

FREQ Button

Modulation LEDs
Proper input gain adjustment is critical to ensure the
best audio quality. Two bicolor LEDs will glow either red
or green to accurately indicate modulation levels. The
input circuitry includes a wide range DSP controlled
limiter to prevent distortion at high input levels.
It is important to set the gain (audio level) high enough
to achieve full modulation during louder peaks in the
audio. The limiter can handle over 30 dB of level above
full modulation, so with an optimum setting, the LEDs
will flash red during use. If the LEDs never flash red, the
gain is too low. In the table below, +0 dB indicates full
modulation.
Signal Level
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 db
AUDIO Button
The AUDIO button is used to display the audio level and
low frequency roll-off settings. The UP and DOWN ar-
rows adjust the values.
The AUDIO button is also used with the FREQ button to
enter standby mode and to power the transmitter on or off.
FREQ Button
The FREQ Button displays the selected operating
frequency and also toggles the LCD between displaying
the actual operating frequency in MHz and a two-digit
hexadecimal number that corresponds to the equivalent
Lectrosonics Frequency Switch Setting.
The FREQ button is also used with the AUDIO button to
enter standby mode and to power the transmitter on or off.

Up/Down Arrows

The Up and Down arrow buttons are used to select the
values on the various setup screens and to lock out
the control panel. Pressing both arrows simultaneously
enters the lock countdown. When an attempt is made
to change a setting while the control panel is locked, a
message will flash on the LCD reminding you that the
unit is locked. Once locked, the buttons can only be
unlocked by removing the battery, or via the RM remote
control (if the remote function was enabled in the trans-
mitter setup).
Antenna
The transmitter uses a whip antenna with a flexible wo-
ven, galvanized steel mesh cable and a standard SMA
connector.
-20 LED -10 LED
Off Off
Green Off
Green Green
Red Green
Red Red
LECTROSONICS, INC.