Lectrosonics T187 - Manual (Page 4)

CONTROLS AND FUNCTIONS
EXTERNAL
“P” SWITCH -- POWER ON/OFF
A slide switch which turns battery power on and off. The LED next to the switch lights up when the
Audio Power
“P” switch is turned on. This LED also serves as a battery condition indicator. The LED will glow
brightly when the battery is good and will dim as the battery condition deteriorates. The LED is at
full brightness with a new battery. After 12 to 15 hours of operation the battery voltage will be about
7 Volts and the LED will be completely dark.
“A” SWITCH -- AUDIO ON/OFF
On/Off On/Off
P A
A slide switch which “mutes” the audio in the OFF position and allows the audio gain (modulation
level) of the transmitter to be adjusted without feedback from the sound system.
INTERNAL
MOD LEVEL LEDs
Mod Level These LEDs indicate the audio input level and are used when adjusting the
LEDs
transmitter AUDIO LEVEL (gain) control. As the audio level increases, first one
LED lights. The other LED lights as the audio level reaches maximum modula­
tion. The LEDs are located underneath the battery cover, next to the AUDIO
LEVEL control.
AUDIO LEVEL
AUDIO
LEVEL
Gain Control
This knob (located underneath the battery door) is operated while speaking or
singing into the transmitter to adjust the audio gain of the T187 for the correct
amount of modulation. The LEDs located next to it indicate the modulation level as the gain is adjusted. See page 8
for details on this very important adjustment.
EXTERNAL SWITCHES BYPASS
This concealed slide switch defeats the external switches on the bottom panel for
applications where it is best that the user not be able to operate the power and
mute switches.
EXTERNAL
LED
OFF EXTERNAL
SWITCHES
BYPASS
Bypass Switches
EXTERNAL LED OFF
This slide switch defeats the battery status LED on the bottom panel for applications where the LED may be distract­
ing. With this switch in the right-hand position, the power will remain on and the transmitter operating, even though
the power LED is off.
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