Sony UWP-D21 Operating Instructions Manual page 10

You can disable the power supply operation of the
POWER/MUTE button and change the muting function
on/off control method from the configuration menu.
For details, see "Setting the operation of the audio
muting function (POWER/MUTE) (UTX-M40 only)"
(page 29).
d Battery compartment
Accepts two AA batteries (alkaline, nickel metal hydride,
or lithium batteries).
For details on how to insert batteries, see "Power
Supply" (page 14).
e N-Mark
Receives the frequency and compander mode set on the
tuner. It also notifies the tuner about the frequency and
compander mode set on the transmitter.
f Antenna section
g Display section
A RF transmission indicator
Displays the current transmission status.
: Transmitting
– : Transmission stopped
B RF transmission power indicator
Indicates the current transmission power setting. You can
change the setting with the RF transmission power setting
function.
For details on the RF transmission power setting
function, see "Setting the transmit output level (RF
POWER)" (page 29).
C Audio input level meter
Displays the audio input level.
D Peak indicator
Lights up when the signal is 3 dB below the level at which
distortion begins as a warning of excessive input level.
E Muting status indicator
Displays an icon when the muting function is on.
For details about the muting function, see "Setting the
operation of the audio muting function (POWER/MUTE)
(UTX-M40 only)" (page 29).
F Battery level indicator
Displays the battery level.
For details, see "Battery level indicator" (page 16).
G Menu display section
Displays various functions. Press the + or – button to
switch functions.
For details, see "Configuration menu" (page 23).
H Gain mode indicator
Displays the gain mode setting.
For details, see "Setting the audio gain (GAIN MODE)"
(page 28).
h Infrared detector
Receives the frequency and compander mode set on the
tuner.
i SET button
Adjusts displayed function settings and enters the
displayed value.
Holding down the SET button while turning on the power
turns the transmitter on without transmitting a signal
(transmission stopped mode).
j USB connector (Type C)
For use by service personnel.
k POWER button
Turns the power on/off.
l + or – button
Selects functions or values shown on the display.
10