Lectrosonics UT400 User Manual download pdf (Page 6)

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LECTROSONICS, INC.

Power On/Off Switch

A Power On/Off switch located on the outside bottom

of the unit turns the unit on and off. The function of the

Power On/Off Switch can also be changed so it also

operates as an audio mute switch. In this conﬁguration,

the Power LED doubles as a battery status indicator (in

the unmute or On position) and an audio mute/unmute

indicator (in the muted or Off position). (See Operating

Instructions, Power Switch Function Selection.) These

functions are illustrated in the chart below:

If the UT Power On/Off Switch has been conﬁgured

for Audio Mute Mode, it is still possible to turn off the

transmitter without removing the battery. This is done

by placing the switch in the On position, then toggling

the switch between the On and Off position three times

in less than ﬁve seconds, i.e., On (Starting Position)-

Off-On-Off-On-Off.

The user-selected conﬁguration of the Power On/Off

switch is stored in the unit’s memory and persists until

reconﬁgured by the user.

Power Switch Position

Function On Off

Normal, or Applies Power Turns Unit Off

Power Mode to Unit

Audio Mute Enables Audio Mutes Audio

Mode

Power LED

Whether in normal, mute or locked mode, the Power

LED will indicate the battery level when the unit is pow-

ered up.

The Power LED

indicates the battery

status when the unit

is powered up with

the Power On/Off

switch conﬁgured for

normal operation.

The Power 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 left in the battery. The Power LED

blinks red for a short period when the transmitter is con-

ﬁgured for Normal Mode and the Power On/Off switch

is set to Off. At the end of the power off sequence, then

Power LED goes out.

Power LED

Power On/Off

Switch

Power LED

Power On/Off Switch

Frequency

Switches

Audio Level Control

Modulation

Level LEDs

Battery

Compartment

Locking ring

(Open Position)

Battery

Compartment

Cover

Windscreen

Controls and Functions

NOTE: A NiMH battery gives little or no warning

when it is depleted. If you use NiMH batteries

in the UT, we recommend trying fully charged

batteries ﬁrst, noting the length of time that the

batteries will run the unit and in the future use

somewhat less than that time to determine when

the battery needs to be replaced.

When ﬁrst tinstalled, a weak battery will sometimes

cause the Power LED to glow green, but will soon dis-

charge to the point where the LED will blink red or shut

off completely.

When Power On/Off switch is conﬁgured for Audio Mute

Mode, the Power LED indicates battery status when the

switch is set to On. However, when the Power On/Off

swtich is conﬁgured for Audio Mute Mode and set to Off,

the Power LED will slowly double blink green to indicate

that the unit’s audio is muted. (See Operating Instruc-

tions, Power Switch Function Selection.)

Compatibility Modes

The Power LED is used to indicate Compatibility Mode.

To identify the current Compatibility Mode, as part of the

powerup sequence, the Power LED will blink:

• Once for 100 Series mode

• Two times for 200 Series mode

• Three times for Mode 3*

• Four times for 400 Series mode

• Five times for IFB Series mode

*This mode works with analog receivers from other

manufacturers. Contact Lectrosonics for a complete list

of non-Lectrosonics compatible receivers.

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Lectrosonics UT400 User Manual Page 6

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