MIPRO ACT-311/312/323/343 Diversity Wireless Receivers User Guide

Important Safety Instructions

! IMPORTANT SAFETY INSTRUCTIONS !

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.
19. Where the MAINS plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable.

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.

[Caution Symbol] This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit.

[Symbol] This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit.

[FCC Logo] & [CE Logo] - ID THIS DEVICE COMPLIES WITH PART15 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: Dispose of any unusable devices or batteries responsibly and in accordance with any applicable regulations. [Battery Disposal Symbol] 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!

Part Names

Fig. 1: Illustration showing the front and rear panels of the MIPRO ACT series wireless receivers.

1. ACT-311 Single-Channel Receiver

Front Panel: Includes Power Switch, LCD Screen, Volume Control, SET Button, ACT Button, ACT Sync Port, and various indicators.

Rear Panel: Features B/A Antenna Connector, DC Input Jack, Mixed Balanced Audio Output B XLR Connector, Mixed Unbalanced Audio Output B 6.3 Ø Phone Jack, Balanced and Unbalanced Volume Level Switch, and Balanced and Unbalanced Output Mixed Switch.

2. ACT-312 Dual-Channel Receiver

Front Panel: Similar layout to ACT-311, with controls for two channels.

Rear Panel: Includes Antenna Connectors (A & B), DC Input, Mixed Balanced Audio Output A/B XLR Connectors, Mixed Unbalanced Audio Output A/B 6.3 Ø Phone Jacks, Volume Level Switches, and Output Mode Switches.

3. ACT-323 Dual-Channel Receiver

Front Panel: Features Power Switch, LCD Screen, Volume Controls, SET Button, ACT Button, and ACT Sync Port.

Rear Panel: Similar to ACT-312, with Antenna Connectors (A & B), DC Input, Mixed/Separate Balanced Output A/B XLR Connectors, Mixed/Separate Unbalanced Output A/B 6.3 Ø Phone Jacks, Volume Level Switches, and Output Mode Switches.

4. ACT-343 Quad-Channel Receiver

Front Panel: Features Power Switch, LCD Screen, Volume Controls, SET Button, ACT Button, and ACT Sync Port for four channels.

Rear Panel: Similar to ACT-323, with Antenna Connectors (A & B), DC Input, Mixed/Separate Balanced Output A/B XLR Connectors, Mixed/Separate Unbalanced Output A/B 6.3 Ø Phone Jacks, Volume Level Switches, and Output Mode Switches.

Receiver Installation

Fig. 2: Rear panel connections. Numbered components include: 9. Antenna Connector, 10. DC Input Jack, 11. Mixed Balanced Audio Output B XLR Connector, 12. Mixed Unbalanced Audio Output B 6.3 Ø Phone Jack, 13. Balanced and Unbalanced Volume Level Switch, 14. Balanced and Unbalanced Output Mixed Switch, 15. Balanced Audio Output A XLR Connector, 16. Unbalanced Audio Output A 6.3 Ø Phone Jack. The diagram also shows example connections for antennas, power, and audio outputs.

1. Antenna Connection: Connect an antenna to each of the antenna connectors [Antenna Connector] on the rear panel. Antenna connectors provide an 8-volt DC bias to work with MIPRO antenna boosters. If the antenna cable is longer than 10 meters, it is advisable to install an antenna booster to ensure optimal reception.
2. Power Connection: Connect the power supply to the receiver DC input [DC Input Jack] and plug it into an AC power source.
3. Audio Output Connection:
   • (A) When connecting the audio output to the MIC IN jack of the mixer or amplifier, switch output level switch [Volume Level Switch] to 0 dB. When connecting to LINE IN jack, set output level switch to +16 dB when using balanced XLR connector or set output level switch to +10 dB when using unbalanced (6.3 Ø) connector. When connecting to an amplifier with non-standard gain, set output level switch to -6 dB when there is distortion at the maximum output level.
   • (B) Output for electric guitar/bass: Use a 6.3 Ø phone cable. One end to receiver's unbalanced output jack and the other end to guitar/bass amplifier's input jack. Switch the output level to the "+10 dB” position.
   • (C) Use an XLR cable to connect the receiver audio output jacks [Balanced Audio Output XLR Connector] to a mixer or an amplifier's MIC IN jack.
   • (D) Use a PHONE cable to connect the unbalanced phone jacks [Unbalanced Audio Output Phone Jack] to a mixer or an amplifier's LINE IN jack.
   • (E) To mix the multiple channel outputs, connect to the mixed output jacks [Mixed Output Jack] or and switch the output switch to the MIX position.
   • (F) See Fig. 4 for a 3-pin XLR connector wiring diagram.

Fig. 3: Diagram showing how to mix multiple channel outputs.

Fig. 4: 3-pin XLR connector wiring diagram: Pin 1: GND, Pin 2: HOT +, Pin 3: COLD -.

Receiver Operation

1. Before turning on the receiver, ensure all transmitters are powered off and the mixer's volume control is set to a minimized setting. When the receiver is turned on and the LCD screen [LCD Screen] glows, it is working normally.
2. RF meter level [RF Signal Meter] glows when a transmitter is powered on. Once the audio signal is received from the transmitter, the AF level meter [Audio Signal Meter] glows in accord with signal strength. The system is abnormal if the RF indicator or AF meter does not glow, then adjustment or repair might be required.
3. (For ACT-311/ACT-312 only) The microphone volume is adjusted at the amplifier or mixer. No adjustment is needed at the receiver.

Rackmount Installation for Receivers

Fig. 5: Illustration showing the assembly of the rackmount kit.

Fig. 6: Components of the 1/2-rack kit and 1-rack kit.

1. Single half-rack or single 1-rack receiver: Install the optional rack mount kit and fasten with screws on both sides.
2. Fasten the receivers on an EIA standard 19-inch rack case.

Fig. 7: Illustration of receivers mounted in a 19-inch rack case.

3. For ideal reception range, install the receiver at least 1 meter above the ground and away from EMI / RFI “noise" sources. Besides, place the transmitter at least 1 meter away from the receiving antenna, as shown in Fig. 8.

Fig. 8: Diagram illustrating optimal placement for reception: receiver 1 meter above ground and away from noise sources, transmitter 1 meter from receiving antenna.

4. Proper installation of antennas affects the operating efficiency of the receiver. The main principle is to minimize the distance between the receiving antenna and transmitter for best reception quality.
5. Use MIPRO supplied antennas to ensure proper receiver sensitivity.
6. The antenna connector provides an 8V DC bias output. Short circuits should be avoided.
7. Install MIPRO directional antennas and boosters if extended reception distance is required.
8. Use the antenna distributor in the multiple channel wireless systems to simplify the antenna installation and improve receiving efficiency.
9. For multiple wireless systems operations, it is recommended to select MIPRO's factory preset interference-free channels within the same group to ensure optimum performance.

LCD Screen

Fig. 9: Illustration of the MIPRO LCD screen displaying various parameters.

The LCD Screen displays functions and parameters:

• 19 Antenna A/B Indicator [Antenna A/B Indicator]
• 20 Group [Group Indicator]
• 21 Channel [Channel Indicator]
• 22 Frequency [Frequency Indicator]
• 23 Lock Mode [Lock Mode Indicator]
• 24 Interference Warning Indicator [Interference Warning Indicator]
• 25 Squelch Meter [Squelch Meter]
• 26 Transmitter Battery Meter [Transmitter Battery Meter]
• 27 RF Signal Meter [RF Signal Meter]
• 28 Audio Signal Meter [Audio Signal Meter]
• 29 Group/Channel/Frequency Display [Group/Channel/Frequency Display]

Receiver Parameters: Use the 'SET' button [SET Button] to select one of 4 functions. Each function can be programmed by pressing the Down [Down Arrow] or Up [Up Arrow] button.

Fig. 10: Illustration showing parameter selection using SET, Down, and Up buttons for GRP, CH, FRQ, SQ.

Programmable Parameters:

(A) GRP: GROUP Setting

Fig. 11: Illustration of Group Setting screen with blinking group number and cursor.

1. Press the 'SET' button [SET Button] until both GRP [Group Indicator] cursor and a group number start blinking to denote it is ready to accept parameter change.
2. During blinking, press the Down [Down Arrow] or Up [Up Arrow] button to select one of the factory preset groups.

(B) CH: CHANNEL Setting

Fig. 12: Illustration of Channel Setting screen with blinking channel number and cursor.

1. Press the 'SET' button [SET Button] until both CH [Channel Indicator] cursor and a channel number start blinking to denote it is ready to accept parameter change.
2. During blinking, press the Down [Down Arrow] or Up [Up Arrow] button to select one of the factory preset channels.
3. In GRP 1~2, the channel number changes 01, 02, 03, ..., 08, 01 accordingly. In GRP 3~7, the channel number changes 01, 02, 03, ..., 16, 01 accordingly. (Frequency bands dependent)

(C) FRQ: FREQUENCY Display

Press the 'SET' button [SET Button] to locate FRQ [Frequency Indicator], and the screen displays the frequency of the preset channel. GRP 7 (frequency bands dependent) is user-defined and designated for frequency programmable only. Otherwise, frequencies are listed and corresponded to preset channels and cannot be programmed.

Fig. 13: Illustration of the Frequency Display screen.

(D) FRQ: FREQUENCY Setting

Fig. 14: Illustration of the Frequency Setting screen with blinking frequency number.

1. Press the 'SET' button [SET Button] until the GRP [Group Indicator] cursor blinks. Press the Down [Down Arrow] or Up [Up Arrow] button to select group 7 (frequency band dependent).
2. Press the 'SET' button [SET Button] again to the desired channel 01~16 (frequency band dependent).
3. Press the 'SET' button [SET Button] to the FRQ [Frequency Indicator] cursor. Press 'SET' again. The first 3 numbers start blinking to denote it is ready to accept parameter change.
4. Press the Down [Down Arrow] or Up [Up Arrow] button to move down or up by 1 MHz step.
5. Press the 'SET' button [SET Button] during blinking and the last 3 numbers start blinking to denote it is ready to accept parameter change.
6. Press the Down [Down Arrow] or Up [Up Arrow] button to move down or up by 25 kHz step.

(E) SQ: SQUELCH Setting

Fig. 15: Illustration of the Squelch Setting screen with blinking SQ cursor.

1. Press the 'SET' button [SET Button] until the SQ [Squelch Meter] cursor starts blinking to denote it is ready to accept parameter change.
2. During blinking, press the Down [Down Arrow] or Up [Up Arrow] button to increase or decrease one squelch level.
3. Decreased SQ level setting has higher sensitivity level resulting in a longer reception range.

(F) Lock & Unlock Receiver Panel

Fig. 16: Illustration showing the Lock icon appearing on the display.

1. To Lock: Press and hold the 'SET' button [SET Button] until the Lock icon [Lock Icon] appears. The display panel is locked and the parameters are not allowed to be changed.
2. To Unlock: Press and hold the 'SET' button [SET Button] until the Lock icon [Lock Icon] disappears.

ACT Sync Setting

Fig. 17: Illustration of the ACT Sync screen, showing GRP/CH blinking and the alignment of IR ports.

1. Press the ACT button [ACT Button] and the GRP/CH [Group Indicator]/[Channel Indicator] numbers start blinking to denote the synchronization process starts.
2. Ensure transmitter is powered-on. Align the ACT IR port [IR Port] of both transmitter and receiver within 30 cm (12 inches).
3. Once the sync is completed, the ACT function will stop automatically and the full grid of RF meter [RF Signal Meter] glows. The LCD on the transmitter also displays the same group and channel of the receiver.

Battery Meter: BA displays the battery meter in percentage (%) indication of remaining battery life when received the transmitter signal. Replace with new, fresh batteries when battery indicators fall to 10% (1 indicator remaining), as shown in Fig. 18.

Fig. 18: Illustration of the battery meter display showing different levels: 100%, 90%, 80%, 40%, 10%, 0%.

Error Message: ERR01 indicates internal data error.

LCD Backlight Display Status: Setting status is deactivated automatically if no function controls are pressed in 5 seconds. Half lightened, standby status is activated if no transmitter signal is received or function controls are not pressed in 10 seconds.

Receiver Power On: Power on the receiver and the LCD screen [LCD Screen] glows. Later, the LCD screen is half lightened denoting standby status. When the transmitter signals are received or function controls are pressed, the LCD screen will be fully lightened.

Design and specifications are subject to change without prior notice. Refer to actual product in the event of product discrepancy.

Frequency range, output power, and maximum deviation to adhere to local telecom regulations.

Company Information

MIPRO Electronics Co., Ltd

Headquarters: No. 814, Beigang Rd., Chiayi City 600079, Taiwan

Tel: +886.5.238.0809

Fax: +886.5.238.0803

Website: www.mipro.com.tw

Email: mipro@mipro.com.tw

[CE Logo] [FCC Logo]

All rights reserved. Do not copy or forward without prior approvals of MIPRO. Specifications and design subject to change without notice.