User Guide ACT-70HC Transmitter All rights reserved. Do not copy or forward without prior approvals MIPRO. Specifications and design subject to change without notice. MN 014/02 2 CE4 6 6 C WARNING 1. FOR OUTDOOR USE:
To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. 2. UNDER WET LOCATION:
Apparatus should not be exposed to dripping or splashing and no objects filled with liquids, such as vases should be placed on the apparatus. 3. SERVICE INSTRUCTIONS:
CAUTION - These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit. This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit. Disposal 2005-08-13 Dispose of any unusable devices or batteries responsibly and in accordance with any applicable regulations. Disposing of used batteries with domestic waste is to be avoided!
Batteries / NiCad cells often contain heavy metals such as cadmium(Cd), mercury(Hg) and lead(Pb) that makes them unsuitable for disposal with domestic waste. You may return spent batteries/
accumulators free of charge to recycling centres or anywhere else batteries/accumulators are sold. By doing so, you contribute to the conservation of our environment!
& IC - ID FCC This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation. This device complied with FCC radiation exposure limits as set forth for an uncontrolled environment. This device should be installed and operated so that its antenna(s) are not co-located or operating in conjunction with any other antenna or transmitter FCC Caution: To assure continued compliance, any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. (Example - use only shielded interface cables when connecting to computer or peripheral devices). IC This device complies with Industry Canadas RSSs. Operation is subject to the following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. Wideband Handheld Transmitter Wideband Handheld Transmitter Contents Handheld Controls and Indicators 1 3 4 6 7 Handheld Controls and Indicators perating Instructions for Insertion &
O Removing Battery Patented Protection Cover LCD Display Screen How to Setup Transmitter Parameters 12 Battery Status 14 Setting MUTE 15 General Tips for Improving System Performance 1 2 3 4 5 6 7 10 11 0 1 7 7 5
. 2 7 5 M H z F R E Q U E N C Y 8 9 Wideband Handheld Transmitter Wideband Handheld Transmitter Operating Instructions for Insertion &
Removing Battery
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Turn the microphone housing and pull it toward capsule grille to expose battery compartment. Insert two new AA alkaline batteries in the battery compartment with correct polarity orientation. Turn power switch to ON position after battery installation. If LCD does not lit, please check battery polarity or change to fresh batteries. Capsule Module: Protects detachable 1 microphone capsule module and internal foam prevents breathing, wind and POP noises. Battery Compartment: Holds 2 'AA' batteries. 2 Housing: Protects transmitter PCB, battery 3 compartment and batteries. LCD Panel: Displays transmitter parameters. 4 Power On/Off Switch: Slides the power switch 5 to the ON position for use or to the OFF position when not in use. MODE Button: Allows access to 6 available 6 functions displaying in LCD panel. SET Button: Parameter selection button. 7 ACT Infrared (IR) Port: Receives signals from 8 receiver to synchronize frequencies. MUTE Button: To mute and un-mute the audio 9 signal temporary. Protection Cover: Protects power switch and 10 prevents user has direct access to power switch. Channel ID Clip: For channel identification 11
(Optional) Caution Remove the batteries if unused for a long period of time to prevent battery leakage, corrosion and causes damage to electronics. 2 3 Wideband Handheld Transmitter Wideband Handheld Transmitter Patented Protection Cover Protection cover's patented design protects
! Channel identification clip can be attached to the accidental access to power switch and its rugged material and snug fit offer protection to both power switch and PCB during accidental drop. Steps:
! Remove protection cover and turn it 180-degree. bottom of protection cover.
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Install the protection cover after turning will cover up power switch. Mute function is open for easy acsess.
! When power is off, reverse-installation of protection cover will turn on the switch automatically. To turn off the system, remove the cover to turn off.
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Protection cover must be attached during operation for full protection. 4 5 Wideband Handheld Transmitter Wideband Handheld Transmitter LCD Display Screen How to Setup Transmitter Parameters FREQUENCY 718.275MHz AF MUTE A3 A1 A2 LCD Screen for function display A1 AF (audio) MUTE A2 Transmitter Battery Meter A3
! Remove protection cover to expose MODE button and SET button.
! MODE Button:
Press MODE button to access one of the six functions below.
! SET Button:
Press SET button and LCD wills start flashing. During flashing, press SET button to change parameters. FREQUENCY 718.275MHz SET MODE A B C GRP CH FREQUENCY 01 01 718.275MHz AF GAIN 0 dB F E D MUTE MODE MANUAL BAND 7UA RF POWER RF-LOW Group and Channel Frequency Sensitivity Level RF Output Power Frequency Band MUTE Mode A B C D E F 7 6 Wideband Handheld Transmitter Wideband Handheld Transmitter
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Frequency Band, Group & Channel and Frequency are factory pre-set, thus, its parameter values are displayed after it is ACT synced. Values cannot be changed. BAND 7UA
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) Frequency Band GRP CH 01 01
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) Group and Channel FREQUENCY 718.275MHz
) Frequency
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Setting Input Gain Level
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Selectable AF GAIN between 12dB to -6dB with 3dB parameter up or down selection. Press MODE button until AF GAIN mode appears. Press SET button once to activate function. Press SET button to select the desired sensitivity level. Press MODE button to confirm and save the change. The higher the sensitivity level, the lower the dynamic range of input signals. Meanwhile noise will increase, and the feedback problem will be getting more serious. Please make sure sensitivity level is set at proper level. AF GAIN 0 dB AF GAIN
+3 dB AF GAIN
+6 dB AF GAIN
+9 dB AF GAIN
+12 dB AF GAIN
+9 dB AF GAIN
+6 dB AF GAIN
+3 dB AF GAIN 0 dB AF GAIN
-3 dB AF GAIN
-6 dB AF GAIN
-3 dB 8 9 Wideband Handheld Transmitter Wideband Handheld Transmitter Setting RF Output Power MUTE MODE
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2 RF Output Power Levels: RF-HI and RF-LOW.
! MUTE MODE: Select from MANUAL and Press MODE button until RF POWER mode appears. Press SET button once to activate function. Press SET button to select the desired RF output power. Press MODE button to confirm and save the change, or LCD will stop flashing after 5 seconds and parameter will be saved. RF POWER RF-LOW RF POWER RF-HI DISABLE.
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Press MODE button until MUTE MODE appears. Press SET button once, the LCD screen starts flashing to denote it is ready to accept mode changes. Press SET button to change between MANUAL and DISABLE in cycle. Press MODE button to confirm and save the change, or LCD will stop flashing after 5 seconds and parameter will be saved.
! MUTE button is operable when MUTE MODE is set in MANUAL mode.
! MUTE button is not operable when MUTE MODE is set in DISABLE mode. MUTE MODE MANUAL MUTE MODE DISABLE 10 11 Wideband Handheld Transmitter Wideband Handheld Transmitter Battery Status
! When the battery has less than 10% power remaining, display will start flashing and batteries must be replaced immediately. If an under voltage condition continues, the LCD will show OFF... and the system will shut down. 100% 80% 60% 40% 20% 10%
Power Button
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Turn the power switch to ON position where transmitter will be activated and LCD will lit up. Turn the power switch to OFF position to shut down the transmitter.
! When the power switch is turned off, the LCD will show OFF... (for Power Off) first and then the system will shut down and no further messages will be displayed. OFF... ERR Message
! When ERR appears in the display it indicates that an operational error has occurred. Please refer to the following codes to diagnose which error you are experiencing. ERR no01 EEPROM is not being programmed or internal data error. ERR no02 For testing only. ERR no03 The frequency you want to program is above the switching bandwidth of the transmitter. Use a receiver with an appropriate frequency group. (At this time the microphone is still operating and the frequency remains unchanged. To clear the displayed "ERR" message, switch the handheld transmitter off and on again.) ERR no04 The frequency you want to program is below the switching bandwidth of the transmitter. Use a receiver with an appropriate frequency group. (At this time the microphone is still operating and the frequency remains unchanged. To clear the displayed ERR message, switch the handheld transmitter off and on again.) Group & Channel : When both the group and channel numbers are displayed, it means that you are using the pre-programmed frequency of the receiver. Channel Only : If Channel only is displayed, it means that you are using a frequency which is not pre-programmed.
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12 13 Wideband Handheld Transmitter Wideband Handheld Transmitter Setting MUTE
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Press MUTE button to enter MUTE mode.
! Under MUTE mode, press MUTE button to exit MUTE mode.
! MUTE button is not operable when MUTE MODE is set in DISABLE mode. E T U M AF INPUT MUTE AF MUTE A B C GRP CH FREQUENCY AF MUTE01 01 718.275MHz AF MUTE AF GAIN 0 dB AF MUTE F E D MUTE MODE BAND AF MUTEMANUAL AF MUTE7UA RF POWER RF-LOW AF MUTE General Tips for Improving System Performance 1. Performer should avoid holding the microphone over or near the antenna section as this will deteriorate transmission efficiency. Severe deterioration if performer directly covers up the antenna section with both hands. 2. Many performers tend to hold the microphone by the top grille. Unfortunately, this position seriously degrades both the sound quality and directionality of a microphone. Even the most expensive microphones will have its original sound quality compromised by this method. Grabbing a microphone by the grille will isolate the capsule's acoustic resonance circuit and or change the capsule resonator's frequency. This results in an inferior performance in both frequency response and the separation of directionality. In addition, a palm's sound-focusing effect will tend to strengthen resonances in certain frequencies and can cause unwanted echo. 3. A proper technique is required for using directional microphones because the distance between the microphone and your mouth has a significant impact on sensitivity and performance. There is an inverse relationship between microphone sensitivity and the distance from the mouth to the microphone. Consequently, performers with a ''weaker'' sound level cannot expect to hold the microphone too far away from their mouth and compensate by turning up the amplifier volume to increase the sound level as this can easily cause echo or feedback. In contrast, performers with a ''louder'' sound level should not hold the microphone too close as this can easily result in distortion by causing the amplifier system to be overloaded. 14 15 Wideband Handheld Transmitter Wideband Handheld Transmitter 4. Furthermore, a large-diaphragm directional microphone has a very distinct proximity effect. When the microphone is close to the mouth, the bass response is strengthened as the distance gets closer. Therefore, if a performer's sound is insufficient in bass, they can hold the microphone closer and use the proximity effect to help compensate for the lower bass level. Conversely, if a performer's voice is too heavy in the bass register, increasing the distance between the microphone and their mouth will decrease the proximity effect and reduce the bass response, thus making their voice become clearer and brighter. 5. It is recommended to keep the grille and sponge windscreen clean to avoid any substance blocking the proximity effect of the microphone. Notes 1. Refer to actual product in the event of product description discrepancy. 2. Frequency range and maximum deviation comply with the regulations of different countries. 16 17