User Guide ACT-71 / ACT-72 / ACT-74 Wideband True Diversity Receiver All rights reserved. Do not copy or forward without prior approvals MIPRO. Specifications and design subject to change without notice.
WARNING IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9.
Contents True Diversity Receivers TRUE DIVERSITY RECEIVERS 1 Product Overview 2 MIPRO'S Proprietary “ACT" Function & Operation 3 Part Names and Functions 6 Receiver Installation 8 Receiver Operation Tips 9 Rackmount Installation for Receivers 11 Receiver VFD Interface 22 Computer Network Interface Operation 23 General Tips for Improving System Performance 24 Troubleshooting PRODUCT OVERVIEW The ACT-71/ACT-72/ACT-74 receivers feature a full-color Vacuum Fluorescent Display (VFD) which d
True Diversity Receivers True Diversity Receivers MIPRO'S PROPRIETARY "ACT" FUNCTION & OPERATION PART NAMES AND FUNCTIONS What is ACT? Front Panel: ! “ACT” stands for “Automatic Channel Targeting”. MIPRO was the first manufacturer in the industry to use infrared (IR) technology to automatically synchronize the frequency selected on the receiver to any ACT handheld or bodypack transmitter on the same frequency band.
True Diversity Receivers True Diversity Receivers 11 Unbalanced Audio Output Jack: ¼” PHONE PLUG type connector provides unbalanced audio output signal from this jack to the mixer (ACT-71 only). Output level is selectable from among 3 levels: “-6dB”, “0dB” and +10dB (the switch will show +16dB on the receiver, but actually puts out +10dB on the unbalanced jack). 12 Network Interface Connector: For linking the receivers to a computer systemmonitoring program.
True Diversity Receivers True Diversity Receivers RECEIVER INSTALLATION 8 14 BALANCED OUT ANTENNA B +8V DC BIAS REMOTE 0dB -6dB Unbalanced Output: Using an audio output cable with ¼” “PHONE PLUG” type connectors, connect one end from the unbalanced output jack 11 of the receiver, and the other end to the “LINE-IN” input jack of the mixer or guitar amplifier, as shown in Figure 2.
True Diversity Receivers True Diversity Receivers RECEIVER OPERATING TIPS RACKMOUNT INSTALLATION FOR RECEIVERS ! Prior to powering on the receiver, ensure all transmitters are turned off and the mixer's volume control is set to a minimized setting. Red LED power indicator is lit when powered on. Single half-rack receiver Install provided rack mount kit and fasten with screws on both sides.
True Diversity Receivers True Diversity Receivers RECEIVER VFD INTERFACE Receiver Rack-Mount Kits FB-71 FB-72 Displays all Parameters 5 Mounts 1 half-rack in a single rack space 14 1 7 13 Mounts 2 half-racks in a single rack space ! The rack mountable kits are pre-drilled with 4 opening holes to be fitted on an EIA standard 19-inch rack case.
True Diversity Receivers True Diversity Receivers Receiver Parameters GRP GROUP setting Rotary Control Knob: To set parameter values SET 6 parameters can be selected and programmed. See instructions below: 4 GRP CH FRQ NAME ADD SQ SELECT GRP Cursor Programmable Parameters: NOTE: To confirm a parameter change and save it into the system, you must press the button to end the flashing of the cursor.
True Diversity Receivers CH True Diversity Receivers FRQ CHANNEL setting FREQUENCY setting SET SET 4 4 SELECT CH Cursor SELECT FRQ Cursor Turn knob clockwise to auto scan from beginning to the end of frequency band Turn knob clockwise to increase frequency Turn knob counterclockwise to decrease frequency Turn knob counterclockwise to auto scan from end to the beginning of frequency band Instructions: Instructions: 1. Press and release the button once.
True Diversity Receivers NAME True Diversity Receivers ADD NAME setting ADDRESS setting NAME Cursor ADD Cursor SET SET 4 4 SELECT SELECT Turn knob clockwise to increase letters, values, and symbols Turn knob counterclockwise to decrease letters, values, and symbols Turn knob clockwise to increase values Turn knob counterclockwise to decrease values Instructions: Instructions: 1. Press and release the button once. The cursor starts flashing to denote it is ready to accept parameter changes.
True Diversity Receivers SQ True Diversity Receivers SQUELCH setting L Receiver Lock & Unlock Lock cursor SQ Cursor SET SET 4 4 SELECT SELECT Press and hold knob to lock and unlock the display panel Turn knob clockwise to increase one segment at a time Turn knob counterclockwise to decrease one segment at a time Instructions: Instructions: 1. Press and release the button once. The cursor starts flashing to denote it is ready to accept parameter changes. 2.
True Diversity Receivers True Diversity Receivers BA: Transmitter Battery Meter Setting ACT transmitter frequency SET SELECT Press ACT button BA BA BA BA BA BA 100% 90% 80% 40% 10% 0% The battery meter is lit when the transmitter is powered on. The LCD battery meter gives a % indication of remaining battery life, as shown above. Replace with new, fresh batteries when battery indicators fall to 10% (1 level remaining). Instructions: 1.
True Diversity Receivers True Diversity Receivers COMPUTER NETWORK INTERFACE OPERATION GENERAL TIPS FOR IMPROVING SYSTEM PERFORMANCE 1. MIPRO ACT receivers have an advanced computer network-interfaced controlling system. 1. 2. Wiring Instructions ! The network interface of ACT-71/ACT-72/ACT-74 receivers is the ''REMOTE'' connector 12 that can be linked to a computer by a MIPRO-DVU or MIPRO-DVJ hardware device.
True Diversity Receivers True Diversity Receivers TROUBLESHOOTING Symptom Solutions Symptom Solutions No Sound ! ! RF Interference ! Receiver is plugged into a power outlet and cable connected to mixer/amplifier Press AutoScan button to locate a clear, interference-free channel ! Fresh batteries in transmitter and inserted with correct polarity Use preset compatible channels in the same group when operating multiple systems.
