Mipro Electronics Co ACT70HC Users manual

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ACT-70H

2 C E 4 6 6 C

User Guide

Handheld TransmitterWideband

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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.

& IC - ID

THIS DEVICE COMPLIES WITH PART74 OF THE FCC RULES AND RSS-210 ISSUE 8 OF CANADA. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

(1) This device may not cause interference.

(2) This device must accept any interference, including interference that may cause undesired operation of the device. This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes :

(1) l'appareil ne doit pas produire de brouillage, et

(2) l'utilisateur de l'appareil doit accepter tout brouillage

radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Disposal

2005 -08-1 3

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!

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Wideband Handheld TransmitterWideband Handheld Transmitter

Contents

1 Handheld Controls and Indicators

3 O

perating Instructions for Insertion &

Removing Battery

4 Patented Protection Cover

6 LCD Display Screen

7 How to Setup Transmitter Parameters

12 Battery Status

14 Setting MUTE

15 General Tips for Improving System

Performance

Handheld Controls and Indicators

775.275MHz

FREQUE NCY

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 Capsule Module: Protects detachable

microphone capsule module and internal foam prevents breathing, wind and POP noises.

 Battery Compartment: Holds 2 'AA' batteries.

 Housing: Protects transmitter PCB, battery

compartment and batteries.

 LCD Panel: Displays transmitter parameters.

 Power On/Off Switch: Slides the power switch

to the “ON” position for use or to the “OFF” position when not in use.

 MODE Button: Allows access to 6 available

functions displaying in LCD panel.

 SET Button: Parameter selection button.

 ACT Infrared (IR) Port: Receives signals from

receiver to synchronize frequencies.

 MUTE Button: To mute and un-mute the audio

signal temporary.

 Protection Cover: Protects power switch and

prevents user has direct access to power switch.

 Channel ID Clip: For channel identification

(Optional)

Wideband Handheld TransmitterWideband Handheld Transmitter

Operating Instructions for Insertion & Removing Battery

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.

Caution

Remove the batteries if unused for a long period of time to prevent battery leakage, corrosion and causes damage to electronics.

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Patented Protection Cover

Wideband Handheld TransmitterWideband Handheld Transmitter

Protection cover's patented design protects 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.

! Install the protection cover after turning will

cover up power switch.

Mute function is open for easy acsess.

! Channel identification clip can be attached to the

bottom of protection cover.

! 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.

! Protection cover must be attached during

operation for full protection.

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 LCD Screen for function display

 AF (audio) MUTE

 Transmitter Battery Meter

FREQUENCY

718.275MHz

AF MUTE

Wideband Handheld TransmitterWideband Handheld Transmitter

How to Setup Transmitter ParametersLCD Display Screen

! 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.

SET

FREQ UENC Y

718.275MHz

MODE

GRP CH

01 01

F E

MUTE MODE

MANUAL

Group and Channel

Frequency

Sensitivity Level

RF Output Power

Frequency Band

MUTE Mode

FREQUENCY

718.275MHz

BAND

7UA

AF GAIN

0 dB

RF POWER

RF-LOW

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Wideband Handheld TransmitterWideband Handheld Transmitter

! 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

GRP CH

01 01

FREQUENCY

718.275MHz

( )Frequency Band

( )Group and Channel

( )Frequency

Setting Input Gain Level

! 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 AF GAIN

+12 dB +9 dB

AF GAIN

+6 dB

AF GAIN

+9 dB

AF GAIN

+6 dB

AF GAIN

-3 dB

AF GAIN

+3 dB

AF GAIN

-6 dB

AF GAIN

0 dB

AF GAIN

-3 dB

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Wideband Handheld TransmitterWideband Handheld Transmitter

Setting RF Output Power

! 2 RF Output Power Levels: RF-HI and RF-LOW.

! 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

MUTE MODE

! MUTE MODE: Select from MANUAL and

DISABLE.

! 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

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Wideband Handheld TransmitterWideband 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.

10 0% 80 % 60 % 40 % 20 % 10%

Power Button

! 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.

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.

OFF...

! “Channel” Only : If “Channel” only is

displayed, it means that you are using a frequency which is not pre-programmed.

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Wideband Handheld TransmitterWideband Handheld Transmitter

Setting MUTE

! 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.

MUTE

AF INPUT

MUTE

AF MUTE

A B

GRP CH

01 01

AF MUTE

F E D

MUTE MODE

MANUAL

AF MUTE

FREQUENCY

718.275MHz

AF MUTE AF MUTE

BAND

7UA

AF MUTE

AF GAIN

0 dB

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.

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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.

Wideband Handheld TransmitterWideband Handheld Transmitter