MIPRO ACT-818 User Manual

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Page 1

User Guide

2 CE 4 5 4 B

ACT-828 Wideband Dual-Channel Digital Receiver

ACT-818 Wideband Single-Channel Digital Receiver

Page 2

! 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- 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!

Page 3

Wideband Digital ReceiversWideband Digital Receivers

Contents

1 Product Overview

2 Receiver Controls and Indicators - Front Panel

3 Receiver Controls and Indicators - Rear Panel

4 Receiver Installation

6 Rackmount Installation for Receivers

8 Receiver VFD Interface

22 Computer Network Interface Operation

24 Troubleshooting

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.

Accessories

The following accessories are included:

Power Cable x 1Antenna x 2

Phone Cable x 1

User Guide x 1

Rack-mount kit x 1 set

(ACT-828)

Power Supply ×1 (ACT-818)

Rack-mount kit x 1 set

(ACT-818)

Page 4

Wideband Digital ReceiversWideband Digital Receivers

Receiver Controls and Indicators

Front Panel

ACT-818

MHz

WIRELES S RECE IVER

ACT

ANT

ADD

DIGITAL

GRP

ACT-818

ACT-828

MHz

GRP

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

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

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.

Headphone Jack: 1/4” stereo headphone jack to monitor the receiver output signal.

Headphone Volume Control and Channel Selector: Push the knob to select the channel you would like to monitor; turn the knob to adjust the volume of the stereo headphone.

Channel Indicator: Indicates the specific channel being monitored.

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

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

Rotary Knob: Selects and sets the parameters.

ACT

ANT

ADD

6 6

PUSH FOR MODE

ACT

PARAMETER

MHz

GRP

ACT

ANT

ADD

Receiver Controls and Indicators

Rear Panel

ACT-818

+8V DC BIAS +8V DC BIAS

LIFT

GND

BALANCED OUT

11 14

SPDIF OUT

LINE

MIC

OUTPUT

ACT-828

ANTENNA B

+8V DC BIAS

LIFT LIFT

GND GND

BALANCED OUT CH2 BALANCED OUT CH1

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

11 1114 14

12 12

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

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).

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).

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

Mic/Line Switch (CH2/CH1): Controls analog balanced output & unbalanced output level. MIC level is microphone output level (0dB); LINE level is auxiliary output.

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

Digital Output (CH2/CH1): SPDIF Digital Output.

Network Interface Connector: Mipro proprietary comms bus to link receiver(s) to the optional computer system-monitoring program. (Requires MIPRO Serial or USB adapter included with software package)

DC Input Jack: Accepts +12V DC (center pin is positive and sleeve is ground).

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

AC Mains Power Socket: 100 ~ 240V AC.

SPDIF OUT CH2 SPDIF OUT CH1

LINE LINE

MIC MIC

OUTPUT CH2 OUTPUT CH1

15 15

13 13

REMOTE

OUT

This connector can not be connected to telecommunication networks.

ANTENNA AANTENNA B

DC INPUT

(12~15V)

MADE IN TAIWAN

REMOTE

DC INPUT

ANTENNA A

(12~15V)

+8V DC BIAS

OUT

This connector can not be connected to telecommunication networks.

AC INPUT: 100~240V

19 9

MADE IN TAIWAN

Page 5

Receiver Installation

ACT-818

+8V DC BIAS +8V DC BIAS

11 14

LIFT

LINE

MIC

GND

BALANCED OUT

Wideband Digital ReceiversWideband Digital Receivers

REMOTE

DC INPUT

ANTENNA A

(12~15V)

OUT

16 17

SPDIF OUT

OUTPUT

REMOTE

OUT

This connector can not be connected to telecommunication networks.

ANTENNA AANTENNA B

DC INPUT

(12~15V)

MADE IN TAIWAN

This connector can not be connected to telecommunication networks.

+8V DC BIAS

1: GND 2: HOT 3: COLD

(Figure 1)

ACT-828

ANTENNA B

+8V DC BIAS

LIFT LIFT

GND GND

14 14

12 12

BALANCED OUT CH2 BALANCED OUT CH1

15 15

SPDIF OUT CH2 SPDIF OUT CH1

LINE LINE

MIC MIC

OUTPUT CH2 OUTPUT CH1

REMOTE

OUT

This connector can not be connected to telecommunication networks.

DC INPUT

ANTENNA A

(12~15V)

+8V DC BIAS

AC INPUT: 100~240V

MADE IN TAIWAN

(Figure 2)

Antenna Installation:

! Install 2 separate antennas on the antenna sockets on the rear panel.

illustrated in (Figure 1/Figure 2).

Connecting the power supply:

! AC Power Operation: Connect the AC power cable to the AC Input Jack , then

plug the other end into an AC outlet having the correct voltage and rating, (See Figure 2)(ACT-828)

! DC Power Operation: Connect the output end of AC/DC power supply to DC 12V

Input Jack , then plug the power supply unit into an appropriate AC outlet as

shown in (Figure 3). (Caution: Be sure the power supply is connected to an AC outlet with the correct voltage and rating.)

(Figure 3)

(Figure 4)

Audio Output Connection:

Level Switch Setting Position for Unbalanced Output:

! When connecting from receiver's unbalanced output to the “LINE-IN” jack of a mixer

or amplifier or “Electric Guitar”, switch the Level Switch to “LINE” position. Low sensitivity may occur if switch to the wrong level position. When connecting from receiver's unbalanced output to the “MIC IN” jack of a mixer or amplifier; switch the Level Switch to “MIC” position. Louder or quieter volume of microphone may occur if switch to the wrong level position. When using electric guitar, don't use “MIC” position as it may have generated insufficient level.

Connection Method of Unbalanced Output:

! When receiver and mixer/amplifier is under short distance. Or the connectors of

receiver/mixer/amplifier are "PHONE” types. Using audio output cable attached with “PHONE PLUG” type, connect one end from the unbalanced output jack, of the receiver, and the other end to the “LINE-IN” input jack of the mixer/amplifier, as shown in (Figure 1/Figure 2).

! Balanced Output Switch: 2 levels of output gain are available: LINE or MIC

Select the most appropriate output level to interface with your mixer or amplifier. If distortion is experienced, adjust the level control to a lower setting until the desired output is attained.

Balanced Output: Using audio output cables with 3 pin "XLR" type connectors, connect one end to the balanced output socket of the receiver, and the other end to the "MIC IN" input of the mixer or amplifier, as shown in (Figure 1/Figure 2). (The configuration of the 3-pin connector is as shown in (Figure 4))

Electric Guitar Output: Using an XLR to 1/4” Jack type connector cable (use Pins 1 and 2 only) connect to guitar input socket on amplifier. Make sure that the gain level is set at 0dB on both receiver and transmitter.

Page 6

Wideband Digital ReceiversWideband Digital Receivers

Rackmount Installation for Receivers

Half-Rack Unit Receiver

Install the optional FB-71 rackmount kit & fasten with screws on both sides. (Figure

1-Rack Unit Receiver

! Install the optional FB-72 rackmount kit & fasten with screws on both sides. (Figure

(Figure 5)

Receiver Rack-Mount Kits

FB-71

(Figure 6)

FB-72

Receiver Operating Tips

Prior to powering on the receiver, ensure all transmitters are turned off and the mixer's volume control is set to minimum.

Normally, the RF meter level illuminates fully when a transmitter is powered on to indicate the receiver is ready for operation. Once an audio signal is received from the transmitter, the AF (audio) meter level will also illuminate based on signal level. If the meter or indicator does not indicate or there is no audio output, the system may not be set up properly. Re-check that the transmitter has fresh batteries and is turned on and the receiver and transmitter are on the same frequency. If not, the transmitter will need to be set up via the ACT sync function.

The microphone output level in normal use should be adjusted at the amplifier or mixer. There is no need to adjust output levels at the receiver itself once initial setup is completed.

The antenna inputs provide an 8-volt DC bias and are designed to work with MIPRO antenna boosters and active antennas. If the connecting cable is longer than 10 metres (approx. 30'), it is advisable to install an antenna booster to ensure optimum reception.

Antenna dividers and receivers must match the same frequency band (i.e. both should be marked 6B, 6C etc.)

Mounts 1 half-rack receiver into 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. (Figure 7)

For ideal reception and performance, install the receiver at least 1 meter (3 feet) above the ground and away from EMI / RFI “noise” sources. In addition, place the transmitter/microphone at least 1 meter (3 feet) away from the receiving antenna, as shown. (Figure 8)

(Figure 7)

Mounts 1 1-rack receiver into a single rack space

Wall

(Figure 8)

Ground

Page 7

Wideband Digital ReceiversWideband Digital Receivers

Receiver VFD Interface

All information displays on the same VFD screen.

RF Signal Meter (Indicates received signal strength)

Audio Signal M eter (Indicates a udio input level from transmitter)

Encryption Status I con (Can be turned on o r off )

Parameter Lock Icon (Can be turned o n or o ff)

Working Frequency (MHz.)

Diversity A/B A ntenna Signal I ndicators (For antenna setup only)

ACT Indicator

Equaliser (Can b e programmed)

Address Code ( For remote c ontrol ID. C an be p rogrammed)

Channel (Can b e programmed)

Group ( Can be programmed)

Squelch Meter (Settings can be programmed)

Transmitter Battery Meter (Shows r eal-time battery status)

b d

l k

GRP

MHz

ADD

i h

ANT

Function Selection

Rotary Controller: To set parameter values

8 parameters can be selected and programmed. See instructions below:

ACT

GRP

ADDANT

Parameter Setting Procedures

To Activate Parameters

Press the rotary controller knob to activate and move the cursor to any of the 8 parameters. Each press moves the cursor to the next parameter. The selected parameter cursor begins to flash when activated. Rotate the rotary controller whilst flashing to change a parameter value.

To Change Parameters

Rotate the rotary controller knob clockwise to increase or counterclockwise to decrease the parameter values.

To Save Changed Parameters Manually

The parameter changes will be saved manually if the rotary controller is pressed after adjusting. The cursor stops flashing after the rotary controller is pressed to confirm the change.

Fully-Lit VFD Screen

GRP

MHz

ADD

ANT

ACT

To Save Changed Parameters Automatically

The parameter changes will be saved automatically if the rotary controller is not pressed for approximately 5 seconds. The cursor also stops flashing after 5 seconds.

Page 8

Wideband Digital ReceiversWideband Digital Receivers

SQ: Squelch Setting

GRP

MHz

SQ cursor starts flashing

Operating Procedure:

1. Press the rotary controller to activate and move the cursor to the SQ parameter. When the SQ cursor starts to flash, the squelch level is ready to be set.

2. Rotate the rotary controller clockwise to increase the SQ level; counterclockwise to decrease the level.

3. Press the rotary controller once to confirm and save the selected SQ level or wait 5 seconds (without touching anything) and the parameter will automatically be saved.

NOTE: The higher the level indicators, the lower the sensitivity - which shortens the

transmission range. The lower the level indicators, the higher the sensitivity which increases the transmission range. However, when the SQ is set at full level (5 bars), the "AutoScan" function will be disabled and users can freely select any group or channel manually.

ACT

ANT

ADD

Rotate clockwise to increase the setting by one bar Rotate counterclockwise to decrease by one bar

GRP: Group Setting

Refer to the supplied channel plan for your band to select a specific frequency.

MHz

GRP

GRP cursor starts flashing

Operating Procedure:

1. Press the rotary controller to activate and move the cursor to the GRP parameter. When the GRP cursor starts to flash, the Group is ready to be set.

2. Rotate the rotary controller clockwise to increase the Group number; counterclockwise to decrease the Group number.

3. Press the rotary controller once to confirm and save the selected Group number (or wait for autosave).

ACT

ANT

ADD

Turn clockwise to increase by one group Turn counterclockwise to decrease by one group

Page 9

Wideband Digital ReceiversWideband Digital Receivers

CH: Channel Setting

MHz

GRP

CH cursor starts flashing

Operating Procedure:

1. Press the rotary controller to activate and move the cursor to the CH parameter. When the CH cursor starts to flash, the Channel is ready to be set.

2. Rotate the rotary controller clockwise to increase the Channel number; counterclockwise to decrease the Channel number.

3. Press the rotary controller once to confirm and save the selected Channel number (or wait for autosave).

4. Last Group (country dependent. may not be GRP 18) is user-defined and can store up to 16 frequencies.

! Turn rotary control to a desired channel control when CH (channel) starts to

flash. Flashing indicates it is ready for change.

! During flashing, Turn CH right or left to increase or decrease channel. Once

desired channel is completed, press & hold the rotary control for few seconds until the frequency starts to flash.

! Turn rotary control right (+1MHz) or left (-1 MHz) will set the parameter left of

the period (.). Press to set.

! Turn rotary control right (+25 kHz) or left (-25 kHz) will set the parameter right

of the period (.). Press to set.

! Only channels (CH) found in last group (GRP) in each bandwidth can be changed

and stored frequencies.

NOTE: When the SQ is set at full level (showing 5 bars), the "AutoScan" function

will be disabled and the user may freely select any preset group or channel manually.

Channels in last GRP (Group) are user-defined frequencies

ACT

ANT

ADD

Rotate the controller to AutoScan for an open, interference-free preset channel

MHz

ACT

ANT

ANT: Antenna A/B Setting

Used for setup only.

ANT cursor starts flashing

MHz

ADD

ACT

ANT

Auto

ANT

GRP

Operating Procedure:

Antenna “Auto” Setting

This is used primarily to test each remote antenna position for signal strength when setting the system up in a venue. The Antenna selection is factory set by default to the “Auto” setting. MIPRO recommends that the antenna is always left set to “Auto” in normal use.

1. Press the rotary controller to activate and move the cursor to the ANT parameter. When the outer ANT cursor starts to flash, the antenna indicator is ready to be set.

2. Press and hold the rotary controller for 3 seconds until the inner ANT cursor starts to blink.

3. Rotate the rotary controller to the “Auto” position.

4. Press the rotary controller once to confirm and save the selected antenna position (or wait for auto save)

Antenna “A” or “B” Setting:

Important: Antenna A or B setting is only to be used for testing received signal

strength during the sound check. Repeated signal dropouts may occur if the receiver is set to just “A” or “B” only. Thus, this setting is not recommended for performance. Once antenna testing is complete, change back to “Auto” and store the setting.

1. Press the rotary controller to activate and move the cursor to ANT parameter. When the outer ANT cursor starts to flash, the Antenna is ready to be set.

2. Press and hold the rotary controller for 3 seconds until the inner ANT cursor starts to blink.

3. Rotate the rotary controller to either antenna “A” or “B”.

4. Press and release the rotary controller to set the selected antenna position.

GRP

ADD

Frequency will flash to denote for parameter change

Antenna A

ANT ANT

Antenna B

Page 10

Wideband Digital ReceiversWideband Digital Receivers

EQ: Capsule Equaliser Setting

The EQ parameter is used to select from a range of simulated microphone capsule EQ's. The default setting for the factory fitted MIPRO capsule is “00”

EQ cursor starts flashing

MHz

GRP

Operating Procedure:

1. Press the rotary controller to activate and move the cursor to the EQ parameter. When the EQ cursor starts to flash, the Equalizer is ready to be set.

2. Rotate the rotary controller clockwise to increase the Equalizer number; counterclockwise to decrease the Equalizer number.

3. The first digit in EQ parameter will be either F or 0. F denotes anti-feedback is activated and 0 denotes anti-feedback is not activated.

4. The second digit in EQ parameter denotes the selected Equalizer number. A total of 10 EQ numbers are available starting with 0 and ends with 9. Numbers 0 ~ 8 are preset EQs and number 9 is user-defined. 0 is the default EQ number.

ACT

ANT

ADD

Turn clockwise to increase by one number Turn counterclockwise to decrease by one number

MHz

ACT

ANT

ADD

“F” denotes anti-feedback feature is activated

“0” denotes anti-feedback feature is not activated

ADD: Address Setting for PC Remote Control

For normal “stand-alone” use, this parameter does not need to be set. However when multiple receivers are to be used and controlled remotely using the MIPRO optional control software each receiver must be given a unique address. Always ensure that you set this address before adding the receiver to the remote control network.

ADD cursor starts flashing

MHz

ADD

ACT

ANT

GRP

Rotate clockwise to increase by one number (01-64) Rotate counterclockwise to decrease by one number (64-01)

Operating Procedure:

1. Press the rotary controller to activate and move the cursor to the ADD parameter. When the ADD cursor starts to flash, the Address is ready to be set.

2. Rotate the rotary controller clockwise to increase the Address number; counterclockwise to decrease the Address number.

3. Press the rotary controller once to confirm and save the selected Address number.

NOTE: This receiver is equipped with an ACT-BUS interface. It allows users to use

the MIPRO-DV (interface converter) and software (sold separately with MIPRO-DV) for remote PC monitoring. It can monitor up to a maximum of 64 channels at the same time. The receiver module address can be set from 1 to 64. In order to monitor the system remotely, each channel must have its own address for individual identification. If two or more channels have been assigned the same address, it will cause confusion in the monitoring system. If the system is not under PC monitoring/control, identical addresses will not affect the receivers' operation.

NOTE: There are 9 preset and 1 user-defined built-in equalisers (00-09). EQ “00” is

the default EQ for the factory fitted MIPRO handheld microphone capsule. EQ's “01-08” are eight other simulated microphone capsule presets. EQ “09” is user-defined and can be programmed by the user. However, the receiver needs to be set up and interfaced with a PC and MIPRO software before this can be achieved.

Page 11

Wideband Digital ReceiversWideband Digital Receivers

Encryption ( ): to Add or Remove Encryption

" "

Encryption icon starts flashing

GRP

" "

MHz

Encryption Instructions:

1. Press the rotary controller to activate and move the cursor to the icon. When the icon starts to flash and the word “NO” appears, the encryption function is ready to be set.

2. Press and hold the rotary controller for approximately 3 seconds until the word changes from “NO” to “YES”.

3. Press rotary controller once to confirm and save the selected “YES” for encryption. The transmitter now needs to be synced to the receiver using the ACT function to apply the encryption.

NOTE:

! Encryption is factory set by default to “NO” in the receiver (encryption OFF).

! The transmitter can only display encryption status and cannot activate/de-

activate encryption.

! The 128-bit encryption key is randomly generated; hence, a new, secure,

encryption key is also downloaded to a transmitter each time an ACT function is synced successfully.

! This means the last encrypted transmitter will work only with the encrypting

receiver. It also means that previously encrypted transmitters will not work with the encrypting receiver even though they are on the same frequency as there will be no audio output. This method also ensures that another similar receiver cannot listen in to the encrypted transmitter.

indicates receiver is encrypted indicates receiver is not encrypted

ACT

ANT

ADD

Press & hold to encrypt or decrypt

Decryption Instructions:

1. Press the rotary controller to activate and move the cursor to the icon. When the icon starts to flash and the word “YES” appears, the Encryption function is ready to be set.

2. Press and hold the rotary controller for approximately 3 seconds until the word changes from “YES” to “NO”.

3. Press the rotary controller once to confirm and save the selected “NO” to turn off the Encryption. Transmitter now needs to be re-synced using ACT to turn transmitter encryption OFF.

Encryption Setup Flow Chart

Hold  for 2~3 Seconds

Encryption

No→YES

Encryption

YES→No

Aim TX to

ACT Button

Aim TX to

ACT Button

Press ACT

Button

Press ACT

Button

(Encrypted) (Not Encrypted)

MHz

ADD

ACT

ANT

GRP

ENCRYP→No

ENCRYP→Yes

GRP

MHz

ADD

Encrypted

Not Encrypted

ACT

ANT

Page 12

Wideband Digital ReceiversWideband Digital Receivers

Parameter Lock ( ): to Lock and Unlock Receiver Parameters

Icon starts flashing

" " " "

GRP

Indicates the receiver is ready to be locked Indicates the receiver is not locked

MHz

ADD

ACT

ANT

Rotate for “ON” or “OFF”

To Lock Receiver:

1. Press the rotary controller to activate and move the cursor to the icon. When the icon starts to flash, the Lock function is ready to be set.

2. Rotate the rotary controller clockwise or counterclockwise to the “ON” position.

3. Press the rotary controller once to confirm and save the selected “ON” to lock all parameters.

NOTE: When locked, the receiver parameters can no longer be changed (except this

one!). However, you can still navigate to view existing settings and parameters.

L L

To Unlock Receiver:

1. Press the rotary controller to activate and move the cursor to the icon. When the icon starts to flash, the Lock function is ready to be set.

2. Rotate the rotary controller clockwise or counterclockwise to the “OFF” position.

3. Press the rotary controller once to confirm and save the selected “OFF” to unlock all parameters. Changes can now be made normally.

MIPRO'S Proprietary "ACT" Function and Operation

What is ACT?

“ACT” stands for “Automatic Channel Targeting”. MIPRO developed and patented this innovative InfraRed (IR) technology in 2001. MIPRO was the first manufacturer in the industry to automatically synchronise the frequency selected on the receiver to any ACT handheld or bodypack transmitter in the same frequency band.

ACT Benefits

No manual frequency adjusting needed, unlike traditional transmitters.

Simple, fast and precise frequency setup without mechanical errors.

Once the frequency has been set, the data is written to memory in the transmitter.

This ensures that the transmitter frequency now stays with that transmitter. That is, of course, until a change is required. By performing the “ACT” function again, the frequency can be re-programmed to another Group/Channel as necessary.

ACT Set-Up

Ensure a receiver channel is set up, the transmitter battery is charged, and the transmitter is powered ON.

Press and release the ACT button on the receiver to activate the ACT sync function. Once activated, the words “ACT” and “Sync” will illuminate.

Move the ACT handheld or bodypack transmitter IR window to within 30cm (12”) of the IR port on the receiver. The IR port on the receiver is located behind the “ACT” button itself and is indicated by a round, dark red dot. The frequency will sync automatically.

When the frequencies have successfully synchronised between the receiver and transmitter the illuminated “ACT” and “Sync” will disappear. The RF meter will now illuminate and show full RF strength.

( : icon illuminated: Parameters locked)

MHz

ADD

ACT

ANT

GRP

(no : icon: Receiver not locked)

MHz

ADD

ACT

ANT

GRP

MHz

ACT

ANT

ADD

GRP

Once ACT button is pressed, it automatically syncs the selected receiver frequency to any MIPRO ACT handheld or bodypack transmitter in the same frequency band quickly and precisely.

MHz

ACT

ANT

ADD

GRP

(

Page 13

Wideband Digital ReceiversWideband Digital Receivers

Setting ACT Transmitter Frequency

Press ACT buttonACT indicator illuminates

MHz

ADD

ACT

ANT

GRP

Indicates the frequencies did not sync successfully. Ensure the IR windows in both the receiver and transmitter are lined up and can “see” each other, then press the ACT button again.

To Activate:

Press the “ACT” button once to activate the ACT sync function. Once activated, the words “ACT” and “Sync” on the receiver will illuminate. Flashing will stop when the IR signal is received by the handheld or bodypack transmitter or no IR signal is received within 10 seconds.

To Cancel:

When the words “ACT” and “Sync” on the receiver illuminate, press the ACT button again.

When the words “ACT” and “Sync” on the receiver illuminate, do not press any button. ACT function will stop and cancel automatically after about 10 seconds.

BA: Transmitter Battery Meter (receiver display)

The battery meter illuminates when the transmitter is powered ON. The LCD battery meter gives a percentage (%) indication of remaining battery life, as shown above. Recharge the transmitter battery (or replace with a charged battery pack) immediately when battery indicators fall to 10% (1 bar showing as indicated above).

BA BA BA BA BA

Instructions:

1. Ensure a receiver channel is set up (Group / Channel), the transmitter battery is charged and the transmitter is powered ON.

2. Press the ACT button on the receiver to activate the ACT function. Once activated, the words ACT and Sync will illuminate.

3. Bring the ACT handheld or bodypack transmitter within 30cm (12”) of the IR port on the receiver (check your transmitter documentation to find out where the IR port is located on the transmitter). The receiver IR port is located behind the “ACT” button and indicated by a round dark red dot. The transmitter/receiver frequency will sync automatically.

4. When the frequencies are successfully synchronised the words ACT and Sync will disappear and the RF meter will immediately indicate full RF signal received.

NOTE: If encryption is turned on, the ACT function will also send a new encryption key

to the transmitter and lock it. To unlock the transmitter it is necessary to re-sync the transmitter again using ACT with the receiver in “Encryption OFF” mode.

Page 14

Wideband Digital ReceiversWideband Digital Receivers

Computer Network Interface Operation

1. MIPRO ACT receivers are fitted with an ACT-BUS interface to enable remote control and monitoring via a PC-based control system. To enable this to communicate, an optional MIPRO interface adapter and software package is required.

2. Wiring Instructions

! Network interfacing of the ACT-818/ACT-828 receivers is achieved via the

REMOTE IN of the Network Interface Connector. This enables the receiver(s) to be linked to a computer using a MIPRO-DVJ (Serial) or MIPRO-DVU (USB) interface connector. Using the RS-232 or USB connector, you can link to a computer through the RS-232 COM port or USB port. (See diagram below)

Connect to keyboard jack on PC Connect to RS-232 jack on PC

ANTENNA A

+8V DC BIAS

ANTENNA A

+8V DC BIAS

ANTENNA A

+8V DC BIAS

MIPRO DVJ

AC INPUT: 100~240V

MADE IN TAIWAN

AC INPUT: 100~240V

MADE IN TAIWAN

AC INPUT: 100~240V

MADE IN TAIWAN

Connector of keyboard

RX 1

RX 2

RX 3

should plug in here

Connect to USB jack on PC

ANTENNA B

+8V DC BIAS

LIFT LIFT

LINE LINE

MIC MIC

GND GND

BALANCED OUT CH1 BALANCED OUT CH2

ANTENNA B

+8V DC BIAS

LIFT LIFT

LINE LINE

MIC MIC

GND GND

BALANCED OUT CH1 BALANCED OUT CH2

ANTENNA B

+8V DC BIAS

LIFT LIFT

LINE LINE

MIC MIC

GND GND

BALANCED OUT CH1 BALANCED OUT CH2

MI PR O DV U

SPDIF OUT CH1 SPDIF OUT CH2

OUTPUT CH1 OUTPUT CH2

SPDIF OUT CH1 SPDIF OUT CH2

OUTPUT CH1 OUTPUT CH2

SPDIF OUT CH1 SPDIF OUT CH2

OUTPUT CH1 OUTPUT CH2

REMOTE

OUT

This connector can not be connected to telecommunication networks.

REMOTE

OUT

This connector can not be connected to telecommunication networks.

REMOTE

OUT

This connector can not be connected to telecommunication networks.

DC INPUT

(12~15V)

DC INPUT

(12~15V)

DC INPUT

(12~15V)

! Plug one side of the supplied telephone-type cable (RJ-11 connectors) to the

REMOTE OUT socket of the on the rear of the receiver and the other end of the cable to the REMOTE IN socket on the rear of the second receiver. Repeat this connection for each receiver in the system as per the illustration above. Finally, connect the REMOTE IN socket on the rear of the first receiver to the MIPRODVU or MIPRO-DVJ.

! The system can link, monitor and control up to 64 receiver channels

simultaneously.

! The connection cable to the computer can be up to 300 metres (330 yards) in

length. However, signal stability and data transmission speed decreases as cable distance gets longer. RF it is recommended not to exceed 100m (110 yards) to maintain the highest data quality as well as a high transmission speed.

General Tips for Improving System Performance

Since the installation of the antenna influences the operating efficiency of the receiver, the most important rule is to minimise the distance as much as possible between the receiving antenna and the microphone for the best reception and performance.

Use MIPRO supplied antennas to ensure proper receiver sensitivity.

A built-in worldwide approved switching power supply assures stable performance in the range of 100-240V AC mains power input.

The antenna socket provides an 8V DC biased output. RF, shorting the antenna socket should be avoided. Temporary shorts on the antenna socket will not affect system performance (provided the short is removed), however, a continuous short on the socket may cause permanent system damage.

If extended reception distance is required, installing a MIPRO wideband active directional antenna kit (AT-90W) will increase antenna performance and thus achieve better range.

Proper antenna distribution is vital to achieving ideal performance from multiple wireless systems operating in the same environment. To greatly reduce antenna clutter in multi-system installations, a MIPRO AD-707a UHF wideband antenna divider system is recommended. Each AD-707a supports up to four UHF diversity receivers to operate from a single pair of antennas. When combined with an AT-70A omni-directional extension antenna and an AT-70B antenna booster or an AT-90W wideband active directional antenna, the AD-707a antenna divider provides optimal signal reception with minimal dropouts or interference. Note that the AD-707a antenna divider must match the same band designation (7A,7B,8A,8B etc.) as the receiver to ensure proper operation.

MIPRO's factory preset “interference-free” channels within the same channel group are recommended to ensure optimum performance from multiple wireless systems installed in the same venue. Use of preset “interference-free” channels from different channel groups may cause interference due to intermodulation issues, and is therefore not recommended.

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Wideband Digital ReceiversWideband Digital Receivers

Troubleshooting

Symptom

No Sound

Signal Drop-outs

Limited Range

Solutions

! Power-on receiver & transmitter.

! Receiver is plugged into a power outlet and cable connected

! Fresh batteries in transmitter and inserted with correct

! Match receiver & transmitter frequency.

! Close proximity between the transmitter and receiver antenna.

! Line-of-sight path between the transmitter and receiver

! Reposition the receiver and/or receiver antennas.

! Receiver antennas are connected.

! Elevate receiver antennas as high as possible.

! Keep hands off of the transmitter antenna.

! Close proximity between the transmitter and receiver antenna.

! Adjust antenna orientation.

! Reposition the receiver and/or receiver antennas.

! Receiver antennas are connected.

! Undamaged antennas.

! Fresh batteries in transmitter.

! Adjust for proper squelch level setting.

to mixer/amplifier.

polarity.

antenna.

Troubleshooting

Symptom

RF Interference

Feedback

Solutions

! Press AutoScan button to locate a clear, interference-free

! Use preset compatible channels in the same group when

! Place receivers away or remove the sources of RF interference

! Avoid operating a frequency on a local TV channel.

! A higher squelch setting improves protection against

! Turn off one transmitter, if both transmitters are operating on

! Fresh batteries in transmitter.

! Turn down the sound system volume.

! Move microphone closer to the performer's mouth.

! Reduce transmitter gain if set too high.

! Position microphone further away from the speakers. Do not

! Use right type of microphone for the specific applications.

! Power off all unused microphones.

channel.

operating multiple systems.

like solid metal objects, electronic equipment & digital devices, dimmers, effect equipment, motors.

interference. (however, resulting in limited range)

the same frequency.

point towards speakers.

Uni/Omni, Supercardioid / Cardioid.

No RF Signal

Distortion

! Match receiver & transmitter frequency.

! Adjust for proper squelch level setting.

! Reduce transmitter gain, if set too high.

! Recommendation: set to 0dB (Mic Level).

! Reduce receiver output setting.

! Proper setting on mixer input gain or integrated amplifier mic

level control.

! Fresh batteries in transmitter.

MIPRO ACT-818 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual