Sennheiser L 2021-40 Users Manual
Tourguide Charger
L 2021-40
Instruction manual
Sennheiser electronic GmbH & Co. KG
Am Labor 1, 30900 Wedemark, Germany, www.sennheiser.com
Publ. 12/18, 583912/A01
Table of contents
Delivery includes...............................................................2
The L 2021-40 charger ..........................................................2
Product overview ..............................................................3
Indications and displays on the charger ....................................... 4
Putting the charger into operation ...............................................6
Placing the charger on a table or cabinet ...................................... 6
Installing the charger ........................................................7
Connecting the charger to a PC .............................................. 9
Connecting the charger to and disconnecting it from the mains................... 9
Using the charger .............................................................10
Switching the charger on/off ................................................10
Charging the receiver rechargeable batteries ..................................11
Configuring chargers via a PC................................................12
Using several Tourguide systems simultaneously ...............................12
Cleaning the L 2021-40 ........................................................13
Specifications ................................................................13
Accessories for the Tourguide system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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Delivery includes
Delivery includes
1 L 2021-40 charger
1 Safety Guide
You additionally require:
• 1 mains cable
• 1 network cable
The L 2021-40 charger
The L 2021-40 charger is part of the Tourguide 2020 D system. The Tourguide 2020 D system offers
optimum digital speech transmission for guided tours e.g. in factories or museums and during
conferences. The use of RF transmission allows freedom of movement for all members of the group.
Six fixed transmission frequencies in “Tourguide mode” and eight transmission frequencies in
“Conference mode“ offer high flexibility and adaptability. The L 2021-40 charger can charge a total
of 40 HDE 2020 D and/or EK 2020 D receivers with their built-in rechargeable batteries. The channel copy function lets you set all receivers to the same channel at the press of a button.
In addition, the charger allows you to directly configure the receivers via a PC. You can connect up
to 125 chargers to a single PC, allowing you to simultaneously configure up to 5000 receivers.
Additional features of the charger:
• Quick charge of receiver rechargeable batteries
• Highest possible operational reliability, since temperature and voltage of the rechargeable
batteries are monitored during charging
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Product overview
Product overview
910
RISK OF ELECTRIC SHOCK, DO NOT OPEN
CAUTION/AVIS
RISQUE DE CHOC ELECTRIQUE, NE PAS OUVRIR
11
8
8
1
8
2
3
4
5
6
7
1 39 “slave” charging compartments (light blue in the diagram) 7 Mains switch
2 “Master” charging compartment (with channel copy function) 8 Air vents
3 Green LED COPY AVAILABLE 9 Network socket
4 COPY button 10 Mains socket
5 Yellow LED SELECT 11 Type plate
6 Red LED POWER
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Indications and displays on the charger
7
Indications and displays on the charger
Operation indication
6
LED POWER 6 Meaning
lights up red The mains switch 7 is in position „ I“, the mains supply is switched on.
is off The mains switch 7 is in position „O“, the mains supply is switched off.
Status indication
5
LED SELECT 5 Meaning
flashes yellow You have just switched on the device (LED flashes for a maximum of 2 se-
conds) or an error has occured.
lights up yellow The charger is connected to a PC and the “Conference Control” software is
running and has established a network connection with the charger and you
have selected the charger or at least one receiver placed into the charger
via the “Conference Control” software.
is off Neither the charger nor a receiver have been selected via the “Conference
Control” software.
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