Nady U-81 Octavo Manual - Page 4

U-81 OCTAVO RECEIVER OPERATING INSTRUCTIONS 1. Rack-Mounting The Receiver The U-81 OCTAVO receiver has pre-drilled holes for rackmounting. Simply attach the Rack Mount Ears (1) on each side and fasten with supplied screws. (Note: Do not mount the receiver in a rack directly above an amplifier or other source of high heat. This could degrade the performance of the U-81 OCTAVO. Always ensure adequate airflow and heat dissipation in any rack configuration.) 2. Installing Antennas If not rackmounting the receiver, the two Antennas (2a) can be mounted directly on the Receiver Antenna Input Jacks (2b) on the receiver's back panel. If rackmounting, antennas can be front mounted on the Rack Ear Jacks (2d), after installing the jacks on the Rack Ears (1) provided. Use the Antenna Connecting Cables (2c) to feed the received signal to the receiver's antenna jacks as pictured, connecting them from the backs of the rack ear jacks to the receiver antenna jacks. The optimal positions of the antennas are 45° from the receiver, so 90° from each other. 3. Powering The Receiver Powering the receiver by plugging the provided 15VDC/1000mA adaptor into the DC INPUT jack (3) on the back of the receiver; then plug the adapter into an AC outlet. (Note: Any 15VDC source with 1200mA capacity can also be used.) Turn volume controls of all channels counterclockwise for minimum setting. Once the receiver is connected to a power source, press the power switch to the ON position, Power LED indicator (4) is ON. The TX LEDs indicator (7) and AF LEDs indicator (8) on the front panel of the receivers will not light up at this time, but only until one or more of the eight channels is receiving a signal from your system's transmitters. To turn OFF, press the Power Switch (5) to the OFF position. 4. Mute (Squelch) & RF LED Display The U-81 OCTAVO has a preset mute (Squelch) internally for each channel for maximum range and performance. There is no need to adjust this. In normal condition, the RF LEDs indicator (7) should be lit when a correct frequency is received from a transmitter. However, when the RF LEDs indicator (7) is extinguished, the transmitter is out of range for that given location, and the user should move closer to the receiver to re-establish the radio link. 5. AF LED Display The U-81 OCTAVO receiver is equipped with an AF LEDs indicator (8). The AF LED indicator lights whenever an audio signal is being received from a modulated transmitter signal. The AF LED indicator is not a peak level indicator so it can light continuously during audio signal input to the transmitter. 6. Connecting Audio Outputs (Using the UH-81 handheld or UB-81 bodypack transmitters) • For microphone use, the fixed Balanced XLR out (9) or the adjustable 1⁄4" MIX out (10) can be used. The U-81 OCTAVO audio output stage of each channel is configured for XLR balanced microphone level when loaded by a 600 ohm balanced or unbalanced mixer input. Make sure the Phantom Power on your mixing board in turned off and the volume in turn down when making the audio connections. Start the receiver VOLUME at minimum and adjust until the level is optimal. 4