Sennheiser SR 2020-D: The operating controls

Tourguide2020_516509_0909_Sp6.book Seite 12 Montag, 22. März 2010 1:12 13

The operating controls

HDE 2020 D stethoset receiver





쐋



6





 Earbows

 Channel display

 Red/green LED for charge status

 4-step battery status display

 LC display

 Volume display

 RF signal indication

 Volume control

 Channel selection button /

 Charging contacts

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The operating controls

EK 2020 D receiver









6



쐋



햴





 Volume control

 Channel display

 Channel selection button /

 4-step battery status display

 LC display

 Volume display

 RF signal indication

 LED for charge status

 ON/OFF button

 Headphone socket

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The operating controls

EZL 2020-20 L charging case

 Charging compartments for

 LED COPY AVAILABLE

accupack/bodypack transmitter

 COPY button

 Red LED CHARGE/ERROR

 Charging compartment with

 Green LED READY

channel copy function (master)

 Storage place for radio microphone

 Air vents

 19 charging compartments for

 IEC mains socket

receivers (slaves, light blue in

 Mains switch

the diagram)

 LED POWER

 LED TEMP ERROR

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The operating controls

Indications and displays on the

bodypack transmitter

Operation and battery status indication

The red LED LOW BATT/MUTE  provides information

on the current operating state of the bodypack trans-

mitter:

Red LED off:

The bodypack transmitter is switched on and the capa-

city of the batteries/BA 2015 accupack is sufficient.

Red LED flashing:

The batteries are/the BA 2015 accupack is going flat

(LOW BATT).

In addition, the 4-step battery status display  on the

햴

display panel provides information on the remaining

battery/BA 2015 accupack capacity:

CH 03

3 segments capacity approx. 100%

LINE

2 segments capacity approx. 70%

MIC

1 segments capacity approx. 30%

Battery icon flashing LOW BATT

AF peak indication

The yellow LED PEAK  lights up when the trans-

mitter’s audio input is overmodulated.

If the transmitter’s audio input level is excessively

high, the sound of the receivers may be distorted.



In order to avoid distortion in the receivers, reduce

the sensitivity of the transmitter’s line and/or micro-

phone input (see “Changing the sensitivity of the

bodypack transmitter’s line input” on page 41 and

“Changing the sensitivity of the bodypack transmit-

ter’s microphone input” on page 42).

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The operating controls

MUTE display

쐋

The red LED LOW BATT/MUTE  lights up when the



transmitter's microphone input is muted (see “Muting

the devices” on page 39).

Note:

The muting function (MUTE) mutes the microphone

input  only, not the line input .

Lock mode icon

The lock mode icon  appears on the display when



the lock mode is activated (see “Activating/deactivat-

ing the lock mode” on page 45).

CH 03

LINE

Display backlighting

MIC

After pressing a button, the display remains backlit

for approx. 30 seconds.

Display of the energy saving mode

When there is no audio signal for 5 minutes or when

the bodypack transmitter is muted, it automatically

switches to energy saving mode. “CH OFF” appears on

the display and the transmission signal is deactivated.

When an audio signal reaches the bodypack trans-

mitter, it automatically switches back to normal oper-

ation and the display displays the selected channel.

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The operating controls

Indications and displays on the radio

microphone

Operation and battery status indication

The red LED (LOW BATT/ON)  provides information

on the current operating state of the radio micro-

phone:

Red LED off:

The radio microphone is switched on and the capacity

of the batteries/BA 2015 accupack is sufficient.



Red LED flashing:

The batteries are/the BA 2015 accupack is going flat

(LOW BATT)!

In addition, the 4-step battery status display  on the

햴

display panel provides information on the remaining

battery/BA 2015 accupack capacity:

CH 03

3 segments capacity approx. 100%

2 segments capacity approx. 70%

1 segments capacity approx. 30%

Battery icon flashing LOW BATT

Lock mode icon

The lock mode icon  appears on the display when



the lock mode is activated (see “Activating/deactivat-

ing the lock mode” on page 45).

CH 03

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The operating controls

Modulation display

The level display for audio signal “AF”  shows the

CH 03

modulation of the radio microphone.

When the radio microphone’s audio input level is

excessively high, the level display for audio signal

“AF”  shows full deflection for the duration of



the overmodulation. You can change modulation by

changing the input sensitivity of the radio micro-

phone as described on page 43.

MUTE display

When the radio microphone is muted, “MUTE” 

CH 03

appears on the display (see “Muting the radio micro-

phone” on page 39).

Display backlighting



After pressing a button, the display remains backlit

for approx. 15 seconds.

Display of the energy saving mode

When there is no audio signal for 5 minutes or when

the radio microphone is muted, it automatically

switches to energy saving mode. “CH OFF” appears on

the display and the transmission signal is deactivated.

When an audio signal reaches the radio microphone,

it automatically switches back to normal operation

and the display displays the selected channel.

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The operating controls

Indications and displays on the receiver

RF signal indication

The RF signal indication  (tower with radio waves)

on the LC display provides information on the

RF signal reception:

Tower with radio waves:

6

An RF signal is being received on the selected channel.

Tower without radio waves:

No RF signal is being received on the selected channel

or the received signal level is too low.

No tower, no radio waves

HDE 2020 D only: The receiver is in standby mode. You

can, however, change the settings on the receiver.

Signal strength

The received signal strength may be reduced due to

body absorption of the RF signal.

Charge status LED

During charging,



•the LED of the EK 2020 D or

•the LED of the HDE 2020 D

provides information on the charge status of the

receiver’s built-in rechargeable battery.

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The operating controls

LED lights up red:



The built-in rechargeable battery is being charged.

LED lights up green:

The built-in rechargeable battery is fully charged. The

receiver is now ready for operation.

LED slowly flashes red:

The temperature of the built-in rechargeable battery

is outside the permissible range (3°C to 40°C). The

charging process is interrupted until the temperature

is again within the admissible

range.

LED lights up yellow/orange:

The built-in rechargeable battery is defective. Please

contact your Sennheiser partner.

Volume display

The volume display  provides information on the

current volume level.

6

Channel display

The channel display  provides information on the

currently selected channel.

6

Battery status display

The 4-step battery status display  provides infor-

mation on the capacity of the receiver’s built-in

6

rechargeable battery.

Shortly before the rechargeable battery is completely

discharged, the display backlighting flashes, indicat-

ing that the receiver will soon switch off automati-

cally.

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The operating controls

Indications and displays on the charging

case

Operation indication

The LED POWER  lights up as long as the mains

supply is switched on.

Temperature indication

The LED TEMP ERROR  lights up if the temperature in

the charging case gets too high and will remain on



until the temperature drops to a safe level. All charg-



ing processes are interrupted until the temperature

drops to a safe level.

LED indication for “automatic copying” function

The LED COPY AVAILABLE  lights up green when

the “automatic copying” function is available. This

happens

• when a switched-on receiver is placed into the

charging compartment with channel copy

function (master) 

• and at least one receiver is placed into one of the

other receiver charging compartments (slaves,

light blue in the diagram) .

The LED COPY AVAILABLE  goes off when the “auto-

matic copying” function is not available. This happens



• when the receiver in the charging compartment



with channel copy function (master)  is switched

off,

• or when the receiver is removed from the charging

compartment with channel copy function

(master) ,

• or when all 19 charging compartments (slaves) 

are empty.

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