Avlex ACT-818 User Manual

ACT-828 Wideband Dual-Channel Digital Receiver

2 CE4 5 4 A

ACT-818 Wideband Single-Channel Digital Receiver

User Guide

MIPRO Electronics Co., Ltd.

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

Design and specifications are subject to change without prior notice

AS121115

! IMPORTANT SAFETY INSTRUCTIONS ! WARNING

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. Do not defeat the safety purpose of the polarised or ground plug: A
polarised plug has two blades with one wider than the other. The wide
blade is provided for your safety. When the provided plug does not fit
into your outlet, consult an electrician for replacement of the obsolete
outlet.

10. Protect the power cord from being walked on or pinched particularly at
plug, convenience receptacles, and the point where they exit from the
apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with a cart, stand, tripod, bracket, or table specified
by the manufacturer, or sold with the apparatus. When a cart
is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long
periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power-supply
cord or plug is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.

15. To reduce the risk of fire or electric shock, do not expose this apparatus
to rain or moisture.

16. Apparatus should not be exposed to dripping or splashing and no objects
filled with liquids, should be placed on the apparatus.

17. Use only with the battery which specified by manufacturer.

18. The power supply cord set is to be the main disconnected device.

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 RSS-310 of Industry Canada. Operation is subject to the
condition that this device does not cause harmful interference.

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 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

200 5-08- 13200 5-08- 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!

Wideband Digital ReceiversWideband Digital Receivers

Contents

1 Product Overview

3 Key Features

4 Receiver Controls and Indicators - Front Panel

5 Receiver Controls and Indicators - Rear Panel

7 Receiver Installation

9 Rackmount Installation for Receivers

10

11 Receiver VFD Interface

12

22

25 Computer Network Interface Operation

26

Receiver Operating Tips

Function Selection

MIPRO'S Proprietary "ACT" Function and Operation

General Tips for Improving System Performance

Product Overview

MIPRO's industry-leading digital wireless microphone system features compander-free
technology ensures crystal-clear, natural vocal reproduction. The handheld transmitter
microphone is equipped with a premium true condenser microphone capsule and
provides warm and accurate transient detail. Expanded 64MHz bandwidth ensures
optimal flexibility and interference-free, compatible channels can be operated
simultaneously.

27 Troubleshooting

0

1

Wideband Digital ReceiversWideband Digital Receivers

Accessories

The following accessories are included:

Phone Cable x 1

Power Supply ×1
(ACT-818)

Rack-mount kit x 1 set

(ACT-818)

Power Cable x 1Antenna x 2 User Guide x 1

Rack-mount kit x 1 set

(ACT-828)

Key Features

!

ACT-828 is an EIA standard 1U dual channel and ACT-818 is a 1/2U single channel
rack-mountable receiver with metal chassis.

!

Full-color VFD (vacuum fluorescent display) for clear viewing all parameters. All
controls are intuitive and easily accessible, allowing for quick and easy system setup
via a single rotary control.

!

Enhanced RF circuitry improves anti-interference characteristics and system
compatibility.

!

64MHz wide bandwidth allows more interference-free channels can be selected.

!

New digital diversity receiving technology eliminates signal dropouts and enhances
receiving range.

!

Digitally-processed RF circuitry and DigitnamicPlus™ technology eliminates
compander noise assuring the wireless sound quality almost as good as cable
transmission.

!

Second generation DSP technology enhances signal stability and reduces the risk of
signal dropouts during interferences.

!

Improved < 2.7 ms latency. Proprietary Audio A/D Converter provides a true
dynamic range of 115 dBA, T.H.D. < 0.03% at 1 kHz.

!

Without the pre-emphasis and de-emphasis circuit used by analog systems, the
sound quality at high frequency remains clear and detailed.

!

SPDIF Digital Audio Interface facilitates a direct connection to digital mixing consoles
and transmits signal without distortion, therefore S/N ratio will not deteriorate in
long distance transmission.

!

Proprietary 256-bit encryption guarantees secure audio transmission, preventing
unauthorized listening.

!

Built-in 10 SmartEQ™ preset and user-defined microphone capsule equalization for
faithful reproduction to suit artists' preferences.

!

Built-in 10 digital anti-feedback SmartEQ™ minimize howling feedback effectively
without sacrificing sound quality.

!

Ideal audio signal transmissions for studio, stage and music instruments, achieving
“CD quality” performance.

!

Energy-saving design improves power efficiency and decreases temperature rise.

!

Optional MIPRO RCS2.Net software allows real-time network remote-controlling and
monitoring of 64 systems.

2

3

Wideband Digital ReceiversWideband Digital Receivers

Receiver Controls and Indicators

Front Panel

ACT-818

L

CH

ANT

ACT

MHz

WIRELES S RECE IVER

BA

EQ

RF

AF

GRP

BAND

ADD

ACT-818

DIGITAL

11

22 33

ACT-828

L

CH

WIRELES S RECE IVER

BA

ANT

EQ

RF

AF

ACT

MHz

CH 1

GRP

BAND

ACT-828

11

22 33 33

11

Front Antenna A/B Input Connector Access: Allows fitting of an optional FBC-71

ADD

DIGITAL

rear-to-front antenna kit to enable front antenna placement.

22

Power Switch and Indicator: Powers the receiver on or off. When switch is turned
on, the red indicator illuminates and VFD panel will light up.

33

Receiver Display Screen: Color VFD (Vacuum Fluorescent Display).

44

ACT Button & IR Port: Press and release ACT button syncs the transmitter and
receiver frequency automatically.

55

Rotary Knob: Selects and sets the parameters.

PUSH FOR MODE PUSH FOR MODE

SQ

ACT ACT

44 44

55 55

PUSH FOR MODE

SQ

ACT

PARAMETER

44

BAND

ADD

DIGITAL

GRP

CH

WIRELES S RECE IVER

55

L

BA

SQ

ANT

EQ

RF

AF

ACT

MHz

CH 2

PARAMETER

11

Receiver Controls and Indicators

Rear Panel

ACT-818

+8V DC BIAS +8V DC BIAS

LIFT

GND

BALANCED OUT

66

777788

99

SPDIF OUT

LINE

MIC

OUTPUT

1111

1010

1212

ACT-828

ANTENNA B

+8V DC BIAS

LIFT LIFT

GND GND

BALANCED OUT CH2 BALANCED OUT CH1

11

66

66

Rack-Mount Brackets: Fits into a standard 19-inch rack case.

88 88

99 99 1515

Optional MIPRO FBC-71 rear-to-front cables can be installed for front antenna
placement to improve reception quality.

77

Rear Antenna B Input Connector: The B antenna installs directly to this
connector and also provides power to an optional antenna booster (AT-70B) or
active antenna (AT-90W/AT-70W).

88

Lift/GND switch (CH2/CH1).
GND: Pin 1 of XLR connector is grounded;
LIFT: Pin 1 of XLR connector is not grounded. (GND = default value).

99

Balanced Audio Output Socket (CH2/CH1): 3 pin XLR type connector provides
balanced audio output signal same as microphone sensitivity level.

1010

Mic/Line Switch (CH2/CH1): Controls analog balanced output & unbalanced
output level.

MIC level is microphone output level (0dB);
LINE level is auxiliary output.

1111

Unbalanced Audio Output Jack (CH2/CH1): 6.3mm (1/4”) phone-jack type
connector provides unbalanced audio output signal.

1212

Digital Output (CH2/CH1): SPDIF Digital Output

SPDIF OUT CH2 SPDIF OUT CH1

LINE LINE

MIC MIC

OUTPUT CH2 OUTPUT CH1

1111 1111

1010 1010

1212 1212

REMOTE

OUT

This connector can not be connected
to telecommunication networks.

1313

ANTENNA AANTENNA B

DC INPUT

(12~15V)

IN

MADE IN TAIWAN

1515

1414

REMOTE

DC INPUT

ANTENNA A

(12~15V)

+8V DC BIAS

OUT

IN

This connector can not be connected
to telecommunication networks.

1313

1414

AC INPUT: 100~240V

1616

66

MADE IN TAIWAN

66

4

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