FOS technologies IWC-400 UHF Professional Wireless Conference Microphone User Manual

FOS technologies IWC-400 UHF Professional Wireless Conference Microphone

Product Information

The Wireless Conference Microphone is a professional wireless microphone designed for use in conference settings. It includes a receiver and a transmitter, both of which operate on a range of frequencies from 600-660MHz. The receiver features an LCD display and can be set to four different channels (A, B, C, D) to avoid interference. The transmitter includes noise-proofing and infrared frequency technology to minimize interference from mobile phones.

Receiver Operation Method

1. Before starting, make sure the transmitters are temporarily not open.
2. Turn the receiver volume to a minimum, and then press the power button to open the receiver.
3. The LCD display will show the current receiver access frequency. Use the Menu Navigation Key to set the receiver to one of the four channels (A, B, C, D).
4. Select the channel with the least amount of interference.
5. When the conference transmitter is turned on, adjust the volume to an appropriate level and speak directly into the microphone cartridge.
6. If there is no sound output or the level meter is not displayed, check if the RF signal level is displayed.
7. To turn off the receiver, long-press the power button until the color screen displays “BYE BYE.”

Conference Transmitter

The conference transmitter includes a base, an infrared frequency sensor, and a battery holder. It also features an LCD display that shows speaking time and RF frequency.

Operating Instructions

1. To turn on the conference transmitter, press the power button. The base switch button and speaking indicator light will turn on.
2. To begin speaking, speak directly into the microphone cartridge.
3. To turn off the conference transmitter, press the power button again.

Overall, the Wireless Conference Microphone is an excellent tool for conducting conferences and meetings. Its range of frequencies, noise-proofing technology, and infrared frequency sensor make it a reliable and effective choice for any conference setting.

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Presentation

In order to ensure your better use of this product, please read this manual carefully before use. Understand the correct operation method to obtain the best use effect, and please keep it well the manual for the future.

Application notice

1. Please confirm the correct voltage before installation and use.
2. For full ventilation, the minimum clearance around the equipment is 50CM.
3. Ventilation holes should not be covered with articles such as newspapers, table cloth, and curtains to impede ventilation.
4. The equipment shall not place naked flame sources, such as lighted candles.
5. Keep the equipment ventilated in tropical or temperate climates to avoid high temperatures and direct sunlight and humidity and other environments.
6. The machine shall not be subject to water drops or splashing, and it shall not be placed on the machine such as vases or something filled with liquid.
7. Non-technical personnel should not open the casing to explore its , which is in danger of voltage.
8. Do not collide, throw or vibrate the machine to avoid damaging it.
9. The hazard warning sign” £,” is marked on this unit: This sign is: Warning of dangers and electricity; External conductors marked with such flag port connections need to be directed by personnel to install or use ready-made leads or cords.
10. If you do not leave the working machine for a short time, please turn off the machine and adjust the power supply , when the machine is removed, it must not be left on.
11. The power cord can not trample or pull.
12. When loading the battery, do not insert the positive and negative terminals of the battery , if close the machine for a long time , please take the battery out of the transmitter.
13. It is strictly prohibited to use batteries with damaged insulation material in the outer shell, otherwise it may cause short circuit.
14. If you do not use the machine for a long time, please turn off the power supply and remove the power adapter. never let the it on.

Product features

• UHF band makes fewer interference compared with the conventional VHF band and more reliable transmission;
• DQPSK digital modulation and frequency synthesis technology provides up to 200 channel selection within interval of 300KHZ within the range of 60MHZ.Due to the inherent high immunity of digital modulation to intermodulation interference, it is very simple and convenient to realize the simultaneous use of multiple sets of machines (for example, 5 sets, a total of 20 transmitting bases). and keep away interference;
• Digital modulation and transmission technology with random unique ID is adopted to completely avoid the risk of off-site eavesdropping on the traditional wireless conference microphone system with FM modulation!Ensure confidentiality in signal transmission.
• The receiver adopts DQPSK dual-antenna true diversity reception. In a normal indoor environment with a radius of 30-60 meters, it can completely avoid the possible interruption and noise problems in the traditional analog FM modulation single antenna reception mode!
• Digital modulation and high fidelity reception ensure that the audio index of the whole machine is consistent!Unlike the traditional FM modulation mode, it will deteriorate with the increase of transmitting distance (with the traditional FM receiving mode, its receiving noise, distortion and other indicators will deteriorate with the increase of transmitting distance!).
• Both the receiver and the transmitter base adopt high-definition color LCD TFT display, which makes the working status of the receiver and transmitter clear at a glance:
• The TFT display information on the front panel of the receiver includes: under normal working conditions, the channel number of each channel when the four channels (NB/C/D) are working in real time, RF working frequency, volume level display, and real-time AF ,RF signal strength display, real-time display of important information such as the battery level of each channel’s transmitter; under the setting menu, the selection of each working channel, working frequency, channel volume and other important parameter settings can be easily switched and executed. The smooth UI interface allows on-site engineering staff to quickly operate proficiently!
• The TFT display information of the transmitting base includes: after infrared frequency alignment, the status display of the working channel (NB/C/D) where the transmitting base is located, RF frequency point and RF power tap display, real-time display of important information such as speech time, AF level and battery power.

Two-channel&Four-channel receiver

Names and functions of each part of receiver

Front panel

1. Display
2. Infrared frequency
3. Menu navigation key (press type encoder)
4. Power switch

Two-channel Back panel

Four-channel Back panel

1. Antenna interface
2. DC power interface
3. Frequency switching
4. Four-channel independent balanced output
5. Mixed output (unbalanced)
6. Mixed output (balance)

Eight-channel receiver

Names and functions of each part of receiver

Front panel

1. CD Display
2. Infrared frequency
3. Menu navigation key (press type encoder)
4. Power switch

Back panel

1. CD Antenna interface
2. DC power interface
3. Frequency switching
4. Four-channel independent balanced output
5. Mixed output (unbalanced)
6. Mixed output (balance)

Operating instructions for the receiver’s LCD panel

LCD panel display

1. CD Channel display
2. Channel number of the channel @ Display AF audio parameters @ Display Channel frequency
3. Display RF parameters
4. Return to the upper display page (J) Display volume level
5. Infrared frequency
6. Display battery level

Operating instructions

1. Lightly press the “menu navigation key ” to activate the selection, and the setting is confirmed.
2. Turn the “Menu Navigation Key” to select the corresponding channel, and adjust the data by pressing and turning the “Menu Navigation Key”.
3. After setting a single channel, turn the “menu navigation key” to select the ” ” return arrow, press the “menu navigation key” to confirm, and return to the display homepage.

Note : If there is no operation on a single channel interface for more than 15 seconds, it will automatically jump to the display homepage.

Receiver operation method

Before starting, transmitters temporarily not open, first the receiver volume to minimum, and then press the power button to open the receiver , power conduction, LCD display background lights, all the characters, according to a subsequent LCD displays the current receiver access frequency, automatic corresponds to frequency . Press and turn the “Menu Navigation Key” to set the receiver in the required four channels A, B, C, and D.The user can choose which channel to set according to the range indicated by each channel, as shown in the following figure:
Channel and frequency range of each channel (taking 600-660mhz operating frequency band as an example)

• CHANNEL A: CH-A0l – CH-A50
  FREQUENCY: 600.000MHZ – 658.800MHz with STEP= l .2MHz

• CHANNEL B: CH-B0l – CH-B50
  FREQUENCY: 600.300MHZ – 659. l 00MHZ with STEP= l .2MHz

• CHANNEL C: CH-C0l – CH-C50
  FREQUENCY: 600.600MHZ – 659.400MHz with STEP= l .2MHz

• CHANNEL D: CH-D0l – CH-D50
  FREQUENCY: 600.900MHZ – 659. 700MHz with STEP= 1.2MHz

In the case of does not open conference transmitter to observe the first four channels of RF and AF indicator light , if there is no corresponding RF or AF indicator, that the channel interference is too big, should try to avoid interference .
After open the transmitter power, the corresponding channel of RF level signal display, adjust the volume to the appropriate , and then to the conference transmitter cartridge pronunciation, receiver AF level transmitter volume display corresponding meeting . If there is no sound output and the level meter is not displayed, please check whether the RF signal level has been displayed
Long press the power button, the color screen displays “BYE BYE”, the receiver power is off .

Conference transmitter

1. The names and functions of each part of the conference transmitter
2. Power switch
3. LCD display
4. Remove the microphone rod
5. Speaking indicator light
6. Noise proof
7. IR infrared frequency
8. Battery holder
9. Conference transmitter LCD display
10. Speaking time
11. Transmitter battery display
12. AF audio parameters
13. Frequency display
14. Channel display
15. Infrared frequency

Operating instructions

1. Press the power button to turn on the wireless conference transmitter, press the power button again, the base switch button light and speaking indicator light will light up, and enter the speaking state. After use, press the power button to turn it off.
2. Conference transmitters are excellent against RF interference, especially from mobile phones.

Handheld transmitter (optional)

1. The names and functions of each part of the handheld transmitter
2. Gauze head
3. Battery holder
4. LCD display
5. IR infrared receiving
6. Switch button
7. Up the tube
8. Down the tube
9. Handheld transmitter LCD display
10. Transmitter battery display
11. Speaking icon CD
12. High and low frequency display
13. Frequency display
14. Infrared frequency
15. AF audio parameters

LCD screen can be automatically rotated

1. When the power is turned on, the LED backlight is on, and the LCD screen displays all working channels and battery power at the same time.
2. If the working frequency needs to be changed, the receiver frequency should be changed first, then the infrared frequency window “IR” on the transmitter and receiver should be aligned,The new frequency parameters are passed to the transmitter

Wearing transmitter(Optional)

The names and functions of various parts of the wearing transmitter

• Microphone input interface
• Power switch
• IR infrared frequency
• Antenna
• LCD display
• Battery holder

Wearing a transmitter LCD display

• High and low-frequency display
• Infrared frequency
• Transmitter battery display
• Frequency display
• AF audio parameters

Operating instructions

1. When the power is turned on, the LED backlight is on, and the LCD screen displays all working channels and battery power at the same time.
2. If the working frequency needs to be changed, the receiver frequency should be changed first, then the infrared frequency window “IR” on the transmitter and receiver should be aligned,The new frequency parameters are passed to the transmitter

Correct use of the system

1. How to use the wireless conference transmitter correctly

2. Wireless conference transmitter uses a built-in antenna, so the transmitter should not direct contact with the human body, nor should it be entangled with the transmitter connection line, otherwise it will reduce the use effect ..

3. The sensitivity should be appropriately adjusted according to the distance between the speaker and the sound head.

4. The speaker should be more than l 0cm away from the front end of the sound head to avoid the introduction of friction noise or noises.

5. How to use the receiver correctly

6. When the receiver adopts an omnidirectional antenna, the antenna should be 0.5m away from the wall (especially the metal).

7. The receiving range is related to many factors and varies greatly. There is no large metal block component resistance in the transmission direction, can get better transmission effect.

8. lf the receiving conditions are not satisfactory, the extension cable can be used, and the external high-gain antenna can be connected, even for antenna amplifier can achieve very increasing effect.

9. When the receiver surface is built into the metal case , better reception will be provided the effect when the antenna is connected to the front panel .

10. When the receiver is close to the edge of the operating situation, the directional antenna is used to point to the scope of use can get better reception.

11. How to correctly use multiple sets of wireless conference transmitters at the same location

12. First of all, the frequency configuration without modulation should be selected. Within 50MHz bandwidth, support 20sets be used at the same time conferencetransmitter, if you need to use more wireless conference transmitters, you need to configure other frequency bands type.

13. When multiple sets of conference transmitters are used together, they should be at least 20cm apart to avoid interference from each other.

14. When multiple sets of receivers are used together, it is recommended to install high gain antenna, antenna amplifier and receiving shunt .

15. The speaker should be at a proper distance from the front end of the head, too close to generate poof sound, too far to pick up sound sensitivity down, field amplification has to be raised in the volume, will result in a sharp but audible roar.

16. The frequency set between the four channels of wireless conference transmitter should not be adjusted at the same interval channel as far as possible. If CHANNAL
    A is set to channel 20, the other three channels should avoid setting to 48 , 80, and l 00 , at this time, the same channel configuration of four transmitters should also avoid setting equal spacing frequency .

17. The gooseneck of the wireless conference transmitter should be in good contact with the canons as far as possible, otherwise, it will cause heavy dry .

System specifications

• Frequency range: 600-660/620-690/640-700/ ….. ./880-940/900- 960MHz A total of 16 optional working frequency bands, a total of 360MHz frequency coverage. (For details, please refer to “FREQUENCY SELECTION TABLE”)!
• Modulation mode: DQPSK
• RF operating bandwidth: 60MHz
• Channels: 200
• Channel interval: 300KHz
• Frequency stability: ±0.005%
• Dynamic range: >l00dB
• Frequency response: 60Hz-l 8KHz(±3dB)
• SNR: > 106 dB
• Distortion: <0.2%
• Working temperature -l 0°C -+40 °C

Receiver specifications

• Receiver mode: DQPSK dual antenna true decomposition reception
• Wireless interface : BNC/50O
• Max output level : +l0dBV

Transmitter specifications

• Wireless program: wearable transmitter uses l /4 wavelength whip antenna, handheld microphone built-in helical antenna
• Output power: High powerl 0mW; Low power 3m
• Stray rejection: -60dB
• Power supply : 2 AA batteries(2800mAh)
• Duration time : l 0mW>8 hours(l 0mW); 3mW > l 2hours(3mW)

Excellent stacking performance

Up to 5 sets (20 conference transmitter) modulating methods under the same space and the same frequency band:
For example, the actually set working frequency can be:

• Set l:A0l, B03, C05, D07
• Set 2:All, B13, Cl5, D17
• Set 3:A2L B23, C25, D27
• Set 4:A32, B34, C36, D38
• Set 5 :A4 l, B43, C46, D49

Remark:

Specific work frequency point set, can according to the actual situation, jumped in the environment interference frequency points [receiver comes with RF environment noise level detection and display function, like a simple version of the spectrometer, is very convenient for the commissioning and installation of engineering personnel work), and to ensure that each channel on the number of channels can be greater than or equal to 2.For example, A2l/B23/C25/D27, or A32/B34/C36/D38, etc. (i.e. theoperating frequency interval between channels is greater than 2.4m).

Frequency Selection Table

Simple fault phenomenon and causes

If the fault is not inc luded in the above it , do not take it apart for repair, please contact the manufacturer or local distributor.

Use and save

• Do not put the machine in high humidity, strong electromagnetic field, strong direct sunlight, high temperature and another env environment to use or store, if it a lon g time off , the receiver power should be removed, transmitter battery removed.
• Cleaning: the power plug must be unplugged before cleaning and cleaned with a wet cloth. Do not use any detergent or solvent liquid, otherwise, the surface will be damaged.
• Power supply: make sure the power supply is in the required range, too high or too low will affect the work. When the transmitter is loaded into the battery, do not reverse the power supply, otherwise, it may damage it.
• Repair: if the receiver is fault or the performance drops, please do not remove the case to repair, so as to avoid electric shock or serious damage it, and will lose the warranty
• Please contact the local distributor or manufacturer, we will try our best to help you.
• Attachment: please use the attachment provided by the manufacturer or the approved attachment product to achieve the best performance.
• Warranty: this receiver do not contain any repairable part, please do not open the housing , otherwise it will lose the warranty.

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