Encryption Key Management; Settings Menu - Lectrosonics DCR822 Instruction Manual

DCR822
Encryption Key
Management
The DCR822 has four options for encryption keys:
• Universal: This is the most convenient and ba-
sic option available, and the default setting on all
Lectrosonics D2 digital units. All encryption-capable
Lectrosonics transmitters and receivers contain the
Universal key. The key does not have to be gener-
ated in the DCR822. Simply set the Lectrosonics
encryption-capable transmitters and receivers to
Universal key type, and the encryption is in place.
This allows for convenient encryption amongst mul-
tiple transmitters and receivers, but is not as secure
as creating a unique key.
• Shared: This key policy is designed for sports cover-
age and similar applications where a unique key
provides enhanced security, but multiple transmit-
ters and receivers can share the same key. Once
generated by the receiver, the key can be trans-
ferred via IR to transmitters or additional receivers.
• Standard: This key policy provides excellent se-
curity, second only to the Volatile key policy. Once
a unique key is created in the receiver, it can be
transferred via IR only to transmitters, but not to
other receivers. The receiver tracks the number of
times the key is transferred. Once a Standard key
has been transferred 256 times, an alert will indi-
cate that a new key must be created.
• Volatile This is the most robust key policy available.
After a unique key is created, it can be transferred
only to transmitters, not other receivers. If a trans-
mitter is powered off, it must have the key sent to it
again from the receiver. If the receiver is powered
off, a new key must be generated and sent to the
transmitters. In encryption terms, this is the "one
time use" key management policy.
Encryption Keys
The DCR822 generates high entropy encryption keys
to sync with encryption-capable transmitters. The user
must select a key type and create a key in the DCR822,
and then sync the key with the transmitter.
1. Begin by selecting a Key Type.
IR&Keys --> Key Type --> Universal, Shared, Stan-
dard or Volatile.
2. Next, if using the Shared, Standard or Volatile key
type, select MAKE KEY to generate a new key. Se-
lect "Yes" to confirm Make Key. IR&Keys --> Make
Key.
NOTE: When Universal Key type is selected, there
is no prompt to create key, as it is not necessary.
3. A message will indicate that an Encryption Key has
been created.
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4. Sync new key with transmitter (see Send Key). The
transmitted audio will then be encrypted with the
new key.
Send Key
Select SEND KEY to transfer the encryption key to any
compatible transmitters or, in Shared key policy, additional
receivers. Success will be indicated by the message
"Encryption Key Sent" on the receiver display, and
"Encryption Key Received" on the transmitter display.
IR key transfer failure will be indicated by the message
"IR Sync Failed" on the receiver display.

Settings Menu

Lock/Unlock
The user can lock or unlock the receiver. In Locked
condition, the menus and settings can be browsed but
not changed. Attempting to change a setting or power
off the unit while in the locked condition causes the
message "Settings Locked" to appear on the screen.
The Lock/Unlock condition will persist through battery
changes or external power being removed.
Backlight
Controls the display backlight timeout interval, follow-
ing the last button push. Choose from always on, 30
seconds, or 5 seconds.
RX Power
This function allows you to power off one or both receiv-
er channels when not in use, to save power in a por-
table DC-powered system. Press the MENU/SEL button
to select Channel 1 or Channel 2. Use the UP and
DOWN buttons to turn on or off the selected receiver.
RX Bat Type
Press the UP or DOWN buttons to select the battery
type in use for the receiver: Alkaline or Lithium (recom-
mended).
Tx Bat Type
Set the battery type for each transmitter channel. Note
that for digital transmitters, the battery type is set in the
transmitter and thus if the transmitter is not on, "no link"
will show on that receiver channel. Use MENU/SEL to
toggle between Channel 1 and Channel 2, and then
use the UP and DOWN buttons to change the battery
type settings for those channels (depending on compat
mode).
Tx Bat Timer
Set transmitter battery timer alerts for each channel.
Choose to enable/disable alert, set time in hour and
minutes and reset timer. Use MENU/SEL to set and
move the cursor and the UP and DOWN buttons to
change values. To re-set the timer for the selected chan-
nel, press the MENU/SEL and UP buttons together.
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