Audio Signal Encryption; Rf Cascade Ports; Antenna Bias - Shure ULX-D Quad Manual

Audio Signal Encryption

When encryption is enabled, the receiver generates a unique encryption key which is shared with a the transmitter during an IR
sync. Transmitters and receivers that share an encryption key form a protected audio path, preventing unauthorized access
from other receivers.
Encrypting a Single Transmitter to a Single Receiver
From the receiver menu: DEVICE UTILITIES > ENCRYPTION > ON (Auto)
1.
2. Press ENTER.
3. Perform an IR Sync to share the encryption key with the selected transmitter.
Encrypting Multiple Transmitters to a Single Receiver
Multiple transmitters can share the same encryption key, allowing them access to a single receiver. Use this method if you
have multiple instruments or wish to use a combination of handheld and bodypack transmitters.
1. From the receiver menu: DEVICE UTILITIES > ENCRYPTION > ON (Manual) > KEEP KEYS.
2. Press ENTER.
3. Perform an IR Sync to share the encryption key with the first transmitter.
4. Turn off the transmitter and perform an IR Sync to share the key additional transmitters.
Caution! Make sure only one transmitter is turned on during an IR sync or a performance to avoid causing cross interference between transmitters.
Regenerating Encryption Keys
Periodically regenerating the encryption key maintains security for transmitters and receivers that are paired for extended peri­
ods.
1. From the receiver menu: DEVICE UTILITIES > ENCRYPTION > ON (Manual) > REGENERATE KEYS.
2. Press ENTER.
3. Perform an IR Sync to share the encryption key with the first transmitter.
4. Turn off the transmitter and perform an IR Sync to share the key additional transmitters.
Caution! Make sure only one transmitter is turned on during an IR sync or a performance to avoid causing cross interference between transmitters.
Removing Encryption
1. From the receiver menu: DEVICE UTILITIES ENCRYPTION OFF
2. Press ENTER.
3. IR Sync the transmitter and receiver to clear the encryption key.
Note: If multiple transmitters are encrypted to a single receiver, each transmitter must be IR synced to clear the encryption key.

RF Cascade Ports

The receiver has 2 RF cascade ports on the rear panel to share the signal from the antennas with 1 additional receiver.
Use a shielded coaxial cable to connect the RF cascade ports from the first receiver to the antenna inputs of the second receiv­
er.
Important! The frequency band must be the same for both receivers.

Antenna Bias

Antenna ports A and B provide a DC bias to power active antennas. Set the DC power to off when using passive (non­pow­
ered) antennas.
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