User's Manual
DBu, DBu/E01
LECTROSONICS, INC.
10
Locking/Unlocking Changes to Settings
Changes to the settings can be locked to prevent inad-
vertent changes being made.
Locked?
Ye s
No
-40
-20
0
Gain
25
A small padlock symbol will appear on adjustment 
screens when changes have been locked.
BatType
TxPow er
Remote
Locked?
When changes are locked, several controls and actions 
can still be used:
•  Settings can still be unlocked
•  Menus can still be browsed
•  Programmable switch still works (Mute and On/Off)
•  Power can still be turned off by using the power 
menu or removing the batteries.
Restoring Default Settings
This is used to restore the factory settings.
Remote
Locked?
Default
KeyType 
Default
settings
No
Ye s
KeyType
The DBu, DBu/E01 receives an encryption via the IR 
port from a key generating receiver. Begin by selecting 
a key type in the receiver and generating a new key 
(key type is labeled KEY POLICY in the DSQD receiv-
er). Set 
the matching KEY TYPE in the DBu, DBu/E01 and 
transfer the key from the receiver (SYNC KEY) to the 
DBu, DBu/E01 via the IR ports. A confirmation mes-
sage will display on the receiver display if the transfer is 
successful. The  
transmitted audio will then be encrypted and can only 
be listened to if the receiver has the matching encryp-
tion key.
The DBu, DBu/E01 has three options for encryption 
keys: 
 • Standard: This is the highest level of security. 
The encryption keys are unique to the receiver and 
there are only 256 keys available to be transferred 
to a transmitter. The receiver tracks the number of 
keys generated and the number of times each key 
is transferred.
 • Shared: There are an unlimited number of 
shared keys available. Once generated by a re-
ceiver and transferred to the DBu, DBu/E01, the 
encryption key is available to be shared (synced) by 
the DBu, DBu/E01 with other transmitters/receivers 
via the IR port. When a transmitter is set to this key 
type, a menu item named SEND KEY is available to 
transfer the key to another device.
 • Universal: This is the most convenient encryp-
tion option available. All encryption-capable Lectro-
sonics transmitters and receivers contain the Uni-
versal Key. The key does not have to be generated 
by a receiver. Simply set the DBu, DBu/E01 and a 
Lecrosonics receiver to Universal, and the encryp-
tion is in place. This allows for convenient encryp-
tion amongst multiple transmitters and receivers, 
but not as secure as creating a unique key.
KeyType
Standard
Remote
Locked?
Default
KeyType  
WipeKey
This menu item is only available if Key Type is set to 
Standard or Shared. Select Yes to wipe the current key 
and enable the DBu, DBu/E01 to receive a new key.
WipeKey?
No
Ye s
Default
KeyType
WipeKey
SendKey 
SendKey
This menu item is only available if Key Type is set to 
Shared. Press Menu/Sel to sync the Encryption key to 
another transmitter or receiver via the IR port.
SendKey
Share:
Default
KeyType
WipeKey
SendKey 










