FROKET ER102 Wireless UHF Stage Monitor In-Ear Monitoring System User Manual

1. Introduction

The FROKET ER-102 is a professional wireless in-ear monitoring system designed for various audio applications such as recording studios, stage performances, classroom teaching, and conferences. It utilizes UHF signal transmission and features Bluetooth 5.0 connectivity for convenient audio streaming. This system allows for real-time monitoring with high-fidelity HIFI headphones, ensuring clear audio even in noisy environments.

2. Safety Information

• Ensure proper ventilation around the units. Do not expose the system to water, moisture, or excessive heat.
• Use only the provided power adapter to prevent damage.
• Keep the receiver and transmitter away from strong magnetic objects or most digital devices (such as CD players, computers, speakers, Wi-Fi routers) to avoid interference.
• For optimal signal reception, the transmitter and antenna should be kept in a clear line of sight.
• Position the receiver at a height of approximately 1.5 meters from the ground and at least 1 meter away from walls.

3. Package Contents

The ER-102 system typically includes the following components. Please check your package to ensure all items are present:

• 1x ER-102 Transmitter Unit
• 1x Bodypack Receiver (quantity may vary based on purchased bundle)
• 1x Pair of In-Ear Headphones
• 1x Power Adapter (AC)
• 1x Antenna
• Audio Cables (e.g., XLR, 3.5mm)

4. Product Overview

Transmitter Unit

• Display Screen: Shows frequency, channel, signal strength, and other system information.
• Function Set (SET): Button to enter and navigate menu settings.
• IR Sensor: For infrared synchronization with bodypack receivers.
• BT (Bluetooth Signal Light): Indicates Bluetooth connection status.
• Headset Jack: 6.35mm output for direct monitoring with headphones.
• HP LEVEL: Knob to adjust the volume of the headset output.
• Power Switch: Turns the transmitter unit on/off.
• 6.5mm MIX OUT: Audio output for connecting to other audio equipment.
• 3.5mm MIX IN: Auxiliary audio input.
• Mono Input (XLR/6.5mm): Balanced audio inputs for connecting professional audio sources.
• Channel Volume (LEVEL A, LEVEL B): Adjusts the input level for respective channels.
• Power Outlet (DC IN 12-18V): Connects to the AC power adapter.
• Antenna: Connector for the UHF antenna.

Bodypack Receiver

• Display: Shows current frequency, channel, and battery status.
• Monitor Jack: 3.5mm output for connecting in-ear headphones.
• Antenna: Receives UHF signals from the transmitter.
• Battery Compartment: Houses the batteries (e.g., 2x AA).

5. Setup Instructions

5.1 Transmitter Setup

1. Connect Antenna: Screw the provided antenna securely into the ANTENNA connector on the rear panel of the transmitter.
2. Power Connection: Connect the AC power adapter to the DC IN (12-18V) port on the rear panel, then plug the adapter into a suitable power outlet.
3. Audio Input: Connect your audio source (e.g., mixer, microphone preamplifier, instrument) to the MIX IN (XLR/6.5mm combo jacks) or the 3.5mm MIX IN port on the rear panel. Adjust the corresponding LEVEL A/B knobs as needed.
4. Local Monitoring (Optional): If you wish to monitor directly from the transmitter, connect a pair of headphones to the HP (Headset) jack on the front panel and adjust the HP LEVEL knob.
5. Power On: Press the POWER switch on the front panel to turn on the transmitter. The display screen will illuminate.

5.2 Bodypack Receiver Setup

1. Install Batteries: Open the battery compartment on the bodypack receiver and insert 2x AA batteries, ensuring correct polarity.
2. Connect In-Ear Headphones: Plug your in-ear headphones into the MONITOR jack on the bodypack receiver.
3. Power On: Press and hold the power button on the bodypack receiver to turn it on. The display will show the current frequency and battery status.

6. Operating Instructions

6.1 Automatic Connection

Once both the transmitter and receiver are powered on, the receiver will automatically attempt to connect to the transmitter on the last used frequency. Ensure both units are within range.

6.2 Bluetooth 5.0 Connectivity

The ER-102 transmitter features Bluetooth 5.0 for convenient audio streaming from your mobile devices.

1. Ensure the ER-102 transmitter is powered on.
2. Activate Bluetooth on your smartphone or other audio device.
3. Search for available Bluetooth devices and select "ER-102" (or similar name) to pair.
4. Once paired, the BT indicator on the transmitter will illuminate, and you can stream audio from your device directly to the monitoring system.

6.3 Frequency Switching and Synchronization (UHF)

The system operates on UHF frequencies and offers 100 preset channels for flexibility and to avoid interference.

1. Change Transmitter Frequency: Use the "SET" button on the transmitter to navigate through the menu and select a desired frequency channel.
2. Synchronize Receiver: With the transmitter and receiver powered on and close to each other, align the IR sensor on the bodypack receiver with the IR sensor on the transmitter. Press the synchronization button (often part of the SET function) on the transmitter to transfer the frequency to the receiver. The receiver's display will update to match the transmitter's frequency.

6.4 Using Multiple Receivers

The ER-102 system supports connecting multiple bodypack receivers to a single transmitter, allowing multiple performers or participants to monitor the same audio feed simultaneously. Simply synchronize each additional receiver to the transmitter's frequency as described above.

6.5 Monitoring Audio

Adjust the volume on your bodypack receiver to a comfortable listening level. The system provides timely feedback, correctly receiving audio messages even in noisy environments, without delay.

7. Maintenance

• Cleaning: Clean the units with a soft, dry cloth. Avoid using harsh chemicals, solvents, or abrasive cleaners, as these can damage the finish or internal components.
• Storage: When not in use for extended periods, store the system in a cool, dry place, away from direct sunlight and extreme temperatures.
• Batteries: Remove batteries from the bodypack receiver if it will not be used for a long time to prevent leakage and corrosion. Regularly check battery contacts for any signs of corrosion.
• Cables: Handle cables carefully. Avoid sharp bends or kinks that can damage the internal wiring.

8. Troubleshooting

8.1 No Sound

• Power Check: Ensure both the transmitter and receiver are powered on and their respective power indicators are lit.
• Battery Check: Verify that the batteries in the bodypack receiver are charged and correctly inserted.
• Cable Connections: Confirm all audio input and headphone cables are securely connected to their respective ports.
• Frequency Match: Ensure the transmitter and receiver are synchronized to the same frequency channel. Re-sync if necessary.
• Volume Levels: Check the HP LEVEL knob on the transmitter and the volume control on the bodypack receiver. Also, ensure the audio source is sending a signal.

8.2 Interference or Poor Signal

• Line of Sight: Ensure there is a clear line of sight between the transmitter antenna and the bodypack receiver. Obstacles can degrade signal quality.
• Proximity to Electronics: Move the receiver away from other electronic devices such as Wi-Fi routers, computers, and large metal objects that can cause interference.
• Change Frequency: Try switching to a different frequency channel on the transmitter and re-synchronizing the receiver.
• Operating Range: Ensure the receiver is within the effective operating range (up to 80 meters for wireless coverage, 300 meters in an open environment).

8.3 Bluetooth Connection Issues

• Bluetooth Enabled: Verify that Bluetooth is enabled on both the ER-102 transmitter and your streaming device.
• Re-pair Device: If previously paired, try forgetting the device on your smartphone and re-pairing it with the ER-102.
• Interference: Ensure no other Bluetooth devices are actively trying to connect or interfering with the signal.

9. Specifications

10. User Tips

• Optimal Placement: For the best wireless performance, always try to maintain a clear line of sight between the transmitter's antenna and the bodypack receiver. Avoid placing the transmitter behind large metal objects or walls.
• Multi-Receiver Use: When using multiple bodypack receivers, ensure each is properly synchronized to the transmitter's current frequency. This ensures all users receive the same audio feed without interference.
• Battery Management: Consider investing in high-quality rechargeable AA batteries for your bodypack receivers. This is more economical and environmentally friendly for frequent use, especially given the 6-hour battery life.
• Bluetooth Convenience: Utilize the Bluetooth 5.0 feature for quick and easy streaming of backing tracks or practice material from your phone directly to your in-ear monitors.

11. Warranty and Support

For warranty information, technical assistance, or any product-related inquiries, please contact your authorized FROKET retailer or the manufacturer's customer support. Please retain your purchase receipt as proof of purchase for warranty claims.