MIPRO ACT-70T User Manual

MIPRO Electronics Co., Ltd.

2 C E 4 4 8 B

Headquarters: 814 Pei-Kang Road, Chiayi, 60096, Taiwan.
Web: www.mipro.com.tw
E-mail: [e-mail]

ACT-70T

Wideband Bodypack Transmitter

User Guide

Design and specifications are subject to change without prior notice

AS130430

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

1 Features

3 Bodypack Controls and Indicators

6 O

7 LCD

8 T

perating Instructions

Display Screen

ransmitter Parameters

14 Battery Status

16

18 AF

19 B

Setting MUTE

Input Connections

attery Removal and Installation

FeaturesContents

Bandwidth to 72MHz for compatibility with the

!

wideband receivers.

Industry's smallest bodypack transmitter with

!

sturdy magnesium alloy housing for 2AA
batteries.

Antenna, mute button and XLR input connector

!

are located on the top of transmitter.

Backlit LCD displays working band-code, group,

!

channel, frequency, AF input gain, RF output
power, mute, battery status, and error codes.

Innovatively designed battery cover allows easy

!

access to operate buttons and prevents
accidental operation.

Mute button and remote-control jack is equipped

!

for easy activation of mute function.

High efficiency, low power consumption, low

!

spurious emission and high stability PLL
synthesized circuit is applied.

An interference-free working channel can be

!

synchronized quickly and precisely by MIPRO's
patented ACT™ function.

High SPL input without distortion.

!

Can be directly matched to high-low input

!

impedance for microphone and guitar without
switching and the input sensitivity is adjustable.

Mini-XLR input connector for quick-lock or

!

screw-lock with lavaliere or headworn
microphones and guitar.

Adjustable belt clip allows wearing transmitter in

!

any position.

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1

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

Furnished Accessories:

! USER GUIDE ×1

Bodypack Controls and Indicators

1

2

3

4

5

6
7

8
9

10

FREQ UENCY

775.275MHz

MODEON

SET

12

13

11

1

Audio Input Connector: TA4F mini 4-pin
connector accepts any MIPRO lavalier,
instrument and headset microphones and
cables. (See 5 ways of connection on AF Input
Connections)

2

3

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

2

MUTE Button: To mute and un-mute the audio
signal temporary.

3

Antenna: Flexible 1/ 4 wave transmitting
antenna.

4

Transmitter Housing: Holds PCB board and
wires.

5

LCD Panel: Display transmitter parameters.

6

SET Button: Parameter selection button.

7

MODE Button: Allows access to 7 available
functions displaying in LCD panel.

8

Power Button: Press and hold 2 seconds to
power ON or OFF.

9

ACT IR Port: Align and syncs the transmitter
and receiver frequency automatically.

10

Battery Compartment: Holds 2 'AA' batteries.

11

Battery Cover: Hinged cover opens to provide
access to 2 'AA' batteries.

12

External Mute Connector: When an external
mute switch cable, MJ-70 (optional) is
connected, user can manually mute and un­mute the audio temporary.

13

Belt Clip: Detachable and reversible design
allows the transmitter to be worn on a belt,
waistband, or guitar strap ( .Figure 1)

(Positive Wear) (Opposite Wear)

(Figure 1)

4

5

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

Operating Instructions

! The audio gain level is factory preset at 0dB

level.

! Guitar setting is recommended at -12dB level.

!!Insert the lavalier, headset microphone or

instrument cable into the audio input connector
before power ON the transmitter.

Tighten the connector screw clockwise direction
as shown in (Figure 2) for a secured fit.

Capsule Connector

FREQU ENCY

775.275MHz

MODEON

Headset
Lavalier

SET

The ridge on the
connector must align and
match the indentation on
the socket when inserting
for a proper fit.

LCD Display Screen

14

15

14

LCD Screen

15

AF (audio) MUTE

16

Transmitter Battery Meter

AF MUTE

BAND

7UA

16

(Figure 2)

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Wideband Bodypack Transmitter Wideband Bodypack Transmitter

Transmitter Parameters

MODE button

!

Press “MODE” button to access one of the six
parameters below.

SET button

!

Press “SET” button then the changeable
functions will twinkle. Change to the desired
parameters during the above twinkle by pressing
“SET” button.

FREQU ENCY

775.275MHz

MODEON

A DB

GRP CH

01 01

MODE

G

SET LOCK

UNLOCK

SET

FREQUENCY

775.275MHz

MODE
SET

C

AF GAIN

0 dB

MODE MODE

F E

MUTE MODE

MANUAL

MODE

RF POWER

RF-LOW

BAND

7UA

! 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

775.275MHz

MODEMODE MODE

( )Frequency Band

( )Group and Channel

( )Frequency

A

Group and Channel

B

Frequency

C

Sensitivity Level

D

RF Output Power

E

Frequency Band

F

MUTE Mode

G

Parameters Lock & Unlock Status

8

9

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

Setting Input Gain Level

SET

AF GAIN

AF GAIN

6 dB

SET

AF GAIN AF GAIN

0 dB -6 dB

SET

AF GAIN

-18 dB

SET

AF GAIN

AF GAIN

12 dB

SET

AF GAIN

6 dB

SET

AF GAIN

-12 dB

SET

SET

AF GAIN

-6 dB

SET

! Selectable between 12dB to -18dB

with 6dB parameter up or down selection.

! Press MODE button until 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.

NOTE: Guitar setting is recommended at -12dB
level.

AF GAIN

0 dB

AF GAIN

-12 dB

Setting RF Output Power

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

! 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.

RF POWER

RF-LOW

SET

SET

RF POWER

RF-HI

10

11

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

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

SET

MUTE MODE

DISABLE

Setting LOCK

! Setting LOCK can be switched to LOCK or

UNLOCK mode.

! Press MODE button until SET LOCK mode

appears.

! Press SET button to select the desired

parameter.

! Press MODE button to confirm and save the

change.

! Press SET button twice to remove the LOCK

function.

! The LOCK function will be removed automatically

when losing power.

! Mute function can still work properly when

LOCK.

NOTE: Once locked, all 7 parameter values
cannot be changed.

SET LOCK

LOCK

SET

MODE

SET LOCK

UNLOCK

12

13

RF POWER

RF-HI

RF POWER

SET

LOCKED

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

Battery Status

! Indicates the power remaining in the transmitter

battery. When the battery has less than 10%
power remaining it must be replaced or
recharged. If an under voltage condition
continues, the LCD will show “OFF...” and the
system will shut down to prevent being overly
discharged.

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

Power Button

! Press and hold for 2 seconds to power on & off.

“OFF...” - Power Off

! 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...

14

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

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

15

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

Setting MUTE

! Press MUTE button to enter MUTE mode.

! Under MUTE mode, press MUTE button to exit

MUTE mode.

! MUTE button is operable when SET LOCK mode

is LOCK.

! MUTE button is not operable when MUTE

MODE is set in DISABLE mode.

AF INPUT

MUTE

AF MUTE

A DB

GRP CH

01 01

AF MUTE

AF MUTE AF MUTE AF MUTE

FREQUENCY

775.275MHz

MODE

AF MUTE AF MUTE AF MUTE

G

SET LOCK

UNLOCK

MUTE MODE

MANUAL

MODE MODE

C

AF GAIN

0 dB

F E

BAND

7UA

MODE

RF POWER

RF-LOW

MODEMODE MODE

External Mute Connector

! External mute connector is a 3.5mm jack. When

an external mute switch cable, MJ-70 (optional)
is connected, user can manually mute and un­mute the audio temporary.

External mute connector

MJ-70 External Mute Switch (optional)

17

3.5mm jack.

18

External mute switch on/off button.

NOTE: Plug in the device before power on the
bodypack transmitter.

17

16

18

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Wideband Bodypack Transmitter Wideband Bodypack Transmitter

AF Input Connections

(1) 2-Wire Electret condenser
microphone Capsule

PIN

SHIELD

1

AUDIO

2

3

4

(2) 3-Wire Electret condenser microphone Capsule

PIN

SHIELD

1

2

AUDIO

3

BIAS

4

(3) Dynamic Microphone

2

1

3

SHIELD

AUDIO

PIN

1

2

3

4

(4) Electric Guitar

PIN

SHIELD

1

2

AUDIO

3

4

2

3

1

4

2

3

1

4

2

3

1

4

2

3

1

4

Battery Removal and Installation

! Pushing down both snap locks on the sides to

open battery compartment cover. Take out the
two batteries. (Figure 3)

! Insert two fresh AA batteries (alkaline type is

recommended) into the battery compartment
according to the correct polarity (- and +) as
shown in (Figure 4). Then close the battery
compartment cover tightly.

(Figure 4)(Figure 3)

(5) Line-in (Impedance 8KΩ ATT. 10dB)

PIN

SHIELD

AUDIO

1

2

3

4

2

3

1

4

18

Caution:

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

19

Wideband Bodypack Transmitter Wideband Bodypack Transmitter

Disassemble the Belt Clip

! Turn the bodypack transmitter

to the back side like the right
diagram.

! Pull open one side of the belt

clip and make it depart from
the slot of the bodypack
transmitter like the right
diagram.

! Then the other side of the belt

clip can be departed from the
other slot easily. The whole
belt clip is departed from the
bodypack transmitter
completely like the right
diagram.

Assemble the Belt Clip

! Turn the bodypack transmitter

to the back side. Put the belt
clip to the right direction and
aim the one side of the belt
clip to the slot of
the bodypack
transmitter like
the right diagram.

! For opposite wear of bodypack

transmitter, just rotate the belt
clip by 180° like the right
diagram.

! Put one side of the belt clip to

the slot of bodypack
transmitter and fix it like the
right diagram.

!Pull open the other side of the

belt clip and put it to the
other slot of bodypack
transmitter and fix it like the
right diagram.

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Wideband Bodypack Transmitter Wideband Bodypack Transmitter

& IC - ID

THIS DEVICE COMPLIES WITH PART74 OF THE FCC
RULES AND RSS-123 ISSUE2 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.

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!

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