Mipro ACT-32HC UHF Rechargeable Wireless Handheld Transmitter User Manual

1. Introduction

This manual provides detailed instructions for the Mipro ACT-32HC UHF Rechargeable Wireless Handheld Transmitter. Designed for use with ACT300 MA series MRM 70/72 systems, this transmitter features a robust design, stable performance, and user-friendly operation. Please read this manual thoroughly before operating the device to ensure proper use and optimal performance.

Figure 1: Mipro ACT-32HC UHF Wireless Handheld Transmitter. This image displays the black handheld transmitter with a silver mesh grille and a silver band below it. The Mipro logo is visible on the lower part of the handle.

Key Features:

• Robust plastic housing for protection against external impacts and reduced handling noise.
• Stable PLL (Phase-Locked Loop) circuit for reliable frequency transmission.
• Automatic synchronization with the receiver's frequency via MIPRO ACT (Auto Channel Targeting) function.
• Operates with a rechargeable 18500 battery.
• Quick and easy battery replacement by unscrewing the lower part of the housing.
• Removable head system for interchangeability between condenser or dynamic microphone capsules.
• Multi-part metal grille protects the capsule, reduces pop noise, and ensures clear audio.
• LCD screen displays battery status, group, and channel information.

2. Setup

2.1 Battery Installation and Charging

1. Unscrew the lower part of the transmitter housing to access the battery compartment.
2. Insert a fully charged 18500 rechargeable battery, observing the correct polarity (+/-).
3. Securely screw the lower part of the housing back into place.
4. To charge the battery, place the transmitter in a compatible charging station (sold separately) after use. The LCD will indicate charging status.

2.2 Synchronization with Receiver (ACT Sync)

The ACT-32HC transmitter features MIPRO's patented ACT (Auto Channel Targeting) function for automatic frequency synchronization with a compatible receiver.

1. Ensure both the transmitter and the receiver are powered on.
2. On the receiver, select the desired group and channel.
3. Activate the ACT sync function on the receiver (refer to your receiver's manual for specific instructions).
4. Align the IR port of the transmitter with the IR port of the receiver, typically within a few centimeters.
5. The transmitter will automatically synchronize its frequency with the receiver. The LCD on the transmitter will confirm the synchronized group and channel.

3. Operation

3.1 Powering On/Off

• To power on the transmitter, press and hold the power button until the LCD illuminates.
• To power off, press and hold the power button until the LCD turns off.

3.2 LCD Display Information

The LCD screen provides essential operational information:

• Battery Status: Indicates the remaining battery charge. Recharge or replace the battery when the indicator is low.
• Group: Displays the current operating group.
• Channel: Displays the current operating channel within the selected group.

3.3 Microphone Capsule Replacement

The ACT-32HC features a removable head system, allowing for easy interchangeability of microphone capsules.

1. Ensure the transmitter is powered off.
2. Gently unscrew the microphone grille and capsule assembly from the transmitter body.
3. Carefully detach the existing capsule.
4. Attach the desired compatible condenser or dynamic microphone capsule.
5. Screw the grille and capsule assembly back onto the transmitter body until secure.

4. Maintenance

• Keep the transmitter clean by wiping it with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
• Ensure the battery contacts are clean and free of corrosion.
• Store the transmitter in a dry, cool place away from direct sunlight and extreme temperatures.
• When not in use for extended periods, remove the rechargeable battery to prevent potential leakage.

5. Troubleshooting

5.1 No Sound or Intermittent Audio

• Check if the transmitter is powered on and the battery has sufficient charge.
• Verify that the transmitter is correctly synchronized with the receiver (check group and channel on LCD).
• Ensure the receiver is powered on and connected to the audio system.
• Check for potential interference sources (e.g., other wireless devices, Wi-Fi routers) and try changing the operating channel if necessary.
• Confirm that the microphone capsule is securely attached.

5.2 Poor Sound Quality

• Ensure the microphone grille is clean and free from debris.
• Check the distance between the transmitter and receiver; maintain it within the recommended operating range.
• Verify that the audio input sensitivity on the receiver is set correctly.

5.3 Transmitter Not Synchronizing

• Ensure both the transmitter and receiver are powered on.
• Confirm that the IR ports of both devices are aligned and within close proximity during the ACT sync process.
• Check the receiver's manual for specific ACT sync instructions.

6. Specifications

7. Support and Warranty

For technical support, service, or warranty information, please contact your authorized Mipro dealer or visit the official Mipro website. Keep your purchase receipt as proof of purchase for any warranty claims.