Lectrosonics R400a - Manual (Page 8)

R400A
LECTROSONICS, INC. 8
Front Panel Controls and Functions
Balanced Audio Output
This is a standard XLR configuration with Pin 2 “posi-
tive” with reference to hand-held and plug-on transmit-
ters. With lavaliere microphones and belt-pack trans-
mitters, however, phase will vary with different types of
microphones (2-wire vs. 3-wire for example). The audio
output is balanced but not floating. An unbalanced sig-
nal is available using Pin 1 as ground, Pin 2 as signal
and leaving Pin 3 open.
Unbalanced Audio Output
This is a standard 1/4-inch phone jack with the center
pin positive and the sleeve connected to ground. This
jack provides unbalanced line-level audio output.
Power Input Jack
The power input jack accepts +8 VDC to +18 VDC
(center pin is positive and sleeve is ground). The input
is diode protected to prevent damage if the power is ap-
plied with reversed polarity, and it will keep the unit from
operating until the condition is fixed.
Main Antenna and Diversity Antenna Inputs
The MAIN ANT and DIV ANT inputs are both 50 Ohm,
BNC connectors. In single antenna configurations,
the antenna is connected to the MAIN ANT jack. (See
Antenna Use and Placement.)
Rear Panel Features
POWER/
PREV MENU
Button
MENU Control LCD Screen
Main
Antenna Input
Diversity
Antenna Input
Balanced
Audio Output
Power Input Jack
Unbalanced
Audio Output
LCD Screen
The LCD Screen is used to monitor system operation
and display information while configuring the R400A.
(See R400A Menu Options.)
POWER/PREV Menu Button
Dual function control providing a POWER On/Off
function and a return to previous menu function. If the
receiver is turned off, momentarily pressing this button
turns the receiver on. If the receiver is already turned
on, pressing this button causes the LCD to display the
previous menu. Pressing and holding the button for at
least two seconds turns the unit off.
MENU Control
The dual function MENU control is used to access
menus and change receiver settings. Push the control
to enter the TopMenu, or activate the selected menu op-
tion. Rotate the control to either select a menu option
or to set an operating parameter.