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® REDBACK UHFCBand Microphone REDBACK® 8890BDiversity 700 Ch UHFWireless Band Diversity Wireless MicSystem System
®
700 CHANNEL UHF BAND TRUE DIVERSITY WIRELESS MICROPHONE SYSTEM
Operating Instructions Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia. Phone: 1300 780 999 Fax: 1300 790 999 Internet: www.altronics.com.au
Manufactured exclusively for Altronic Distributors Pty Ltd
REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System Congratulations on purchasing a REDBACK PLL synthesized true diversity wireless microphone system. The UHF band wireless microphone and receiver are the latest generation high quality audio systems. The PLL synthesized diversity wireless microphone system operates on UHF band frequency (540-570MHz) with 700 selectable channels. Please read this instruction manual completely before operating the system. These instructions cover the transmitters, and receiver model C 8890B. The receiver unit is used with compatible 700 channel handheld (C 8892B) and lavalier (C 8893B) transmitters. System Features: • Operates on UHF band frequency range 540-570MHz with PLL synthesized control. • Auto-scan function to easily find an interference free channel. • Preset channel groups allow up to 8 transmitters and receivers with the use of the autoscan function, up to 12 transmitters can be used in the same location. • PLL (Phase Locked Loop) synthesized wireless microphone system with 700 selectable frequencies making it easy to choose non-interference channels. • Excellent reception system ensures super high sensitivity, and a high signal to noise ratio. • Units are supplied with SMT assembled PCB modules ensuring high reliability and easy serviceability. • High dynamic range handheld microphone for all vocal applications. • Lapel microphone that minimises static pickup resulting in very low noise. Receiver Features: • 12V DC Power supply (supplied) • 1/2 19” size case with power and RF indicators. Rack ears available for mounting one or two systems into 19” rack equipment. • Removable aerials making the unit suitable for portable or fixed installations. Aerials are fitted with BNC connectors. • Includes in-built power supply for antenna booster. Receiver Specifications: Carrier Frequency Range: ............................................................................................................ UHF band 540-570MHz Frequency Stability: ............................................................................................ ±0.005% with PLL synthesized controlled S/N Ratio: .................................................................................................................................. Over 94dB, at 60dB/μV Image and Spurious Rejection: .............................................................................................................. 80 dB minimum Receiving Sensitivity: .................................................................................................... 10uV over 80dB/uV antenna input Selectivity: .......................................................................................................................................................... >50dB Dynamic Range: ................................................................................................................................................ >100dB Modulation Mode: ......................................................................................................................................................FM IF Frequency: ................................................................................................................ 1st : 243.95MHz 2nd: 10.7MHz Service Area: ............................................................................................................................ 100m in ideal conditions AF Response: ................................................................................................................................ 80Hz to 16kHz(±3dB) T.H.D.: ..................................................................................................................................Less than 1% (at 1kHz) Receiver Audio Output: .................................................................. Unbalanced: max. 775mV (0dB=0.775V) at 5KΩ Load Balanced: max. 1V (0dB=1V) at 5KΩ Load Receiver Power Supply: ............................................................................................................................ DC 12 Adapter Transmitter Specifications (transmitters sold separately): Carrier Frequency Range: ............................................................................................................ UHF band 540-570MHz RF Power Output: ...................................................................................................................................... 10mW (max.) Spurious Emission: .............................................................................................. More than 60dB below carrier frequency Frequency Stability: .................................................................................. Within ±0.005% with PLL synthesised controlled Maximum Deviation: .................................................................................................. ±48kHz within limiting compressor Microphone Capsule: .............................................................................................. Uni-directional condenser microphone Operating Voltage: .................................................................................................... DC1.5Vx2 AA (UM-3) or rechargeable Current Consumption: ........................................................................................................ Approx 120mA ± 10mA(max.)
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System Figure 1: Front and Rear Panel views
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1. Power: To switch on, press and hold power switch until display can be seen. 2. ▲ Button: Used to select mode, and search channel forwards. 3. SYNC: Press this button when synchronising the receiver and transmitter frequency. See SYNC Mode (Page 7) for operation description. 4. Set Button: See ‘Channel Selection Modes’ (Pages 4-6) section for more information on this button’s operation. 5. LCD: Displays the channel number, frequency level, RF & AF signal strength, and mode. 6. GP: Indicates the preset group number, eg. P1, P2 etc. 7. CH: Indicates the preset channel number eg. C1 C2 etc. 8. CH: Indicates the channel number, from 001 to 700. 9 FREQ: Indicates the frequency. 10. RF Level Indicators: 5-segment meter illuminates to indicate RF signal strength. If no LEDs illuminate then the unit is not receiving a signal. 11. AF Level Indicators: 5-segment meter illuminates to indicate audio signal strength. If no LEDs illuminate then the unit is not receiving an audio signal. 12. MANUAL: This mode allows you to select your own interference free channels. 13. SCAN: This mode scans for an interference free channel and selects one automatically. 14. PRESET: This mode selects an interference-free channel from preset-groups. There are 4 preset groups. In each group there are 8 preset channels (see Table 1). This allows up to 8 systems to be used simultaneously. 15. Volume Control: Use this rotary control to adjust the receiver output level to match the input sensitivity of an audio mixer or an amplifier. 16. Antenna Input Connector: BNC-type connectors provide connection to the supplied antennas or to coaxial cable used with an antenna divider, antenna boosters or remote antennas. 17. Balanced Output: 3-pin XLR connector provides balanced low-impedance output. 18. Unbalanced Output: Unbalanced 6.3mm mono jack audio output for connecting to a line point. 19. Mic/Line Switch: Use this to adjust output (XLR balanced connector and 6.35mm unbalanced phone jack) for microphone (-20dB) or line-level (0dB). 20. Squelch: Use the squelch to adjust the output level to suppress noise. The higher the squelch control, the lower the sensitivity of the receiver and smaller the service area of the system. Set the squelch to minimum before turning the receiver on. If you have unwanted noise increase the squelch control until the noise disappears. 21. DC IN: DC Input connector for the included 12V DC power supply.
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System Connection: 1. Connect the cable, one end to the balanced or unbalanced output jack of the receiver, the other end to the mic mixing input of amplifier, audio mixer etc. 2. For best results set the output volume control at about three quarter level and adjust mixer / amplifier level to suit. 3. The squelch level is adjustable by the rotary pot at the back of the unit. Adjust the squelch level to prevent external noise. Note: setting the squelch high (towards max) will reduce the range of the system. 4. When the receiver is not in use disconnect from the mains power. CHANNEL SELECTION MODES: The receiver operates in three channel selection modes. Manual Channel Selection: This mode allows you to manually select interference free channels. Table 1 shows the frequencies available. If two transmitters are being used in the same area, ensure the selected frequencies are at least 10 channel spaces apart. This reduces interference.
Use the ▲ button to select the MANUAL mode so that the ‘MANUAL’ marker appears on the LCD display.
Press the SET button for two seconds until the ‘MUTE’ marker appears on the receiver’s LCD display, and when the frequency and channel data start flashing, then release the button.
Use the ▲ button to select the frequency. Hold the up arrow button to fast forward through all available frequencies until a suitable frequency is found.
Press the SET button to lock the setting or let the selected channel and frequency values keep flashing five times, until they lock into that setting.
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System Scan Channel Selection: This mode automatically searches for an interference free channel. Note: Have the transmitter 1m from the receiver when using this function.
Use the ▲ button to select the SCAN mode so that the ‘SCAN’ marker appears on the LCD display.
Press the SET button for two seconds until the ‘MUTE’ marker appears on the receiver’s LCD display, and when the frequency and channel data start flashing, then release the button.
Use the ▲ button to allow the unit to scan for a vacant or unused frequency. Press the up arrow button to initiate each frequency channel search – no need to hold button.
Press the SET button to lock the setting or let the selected channel and frequency values keep flashing five times, until they lock into that setting.
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System Preset Channel Selection: This mode is used when multiple C 8890B systems are used in the same area. Each receiver is setup to use PRESET mode. This allows each receiver to select a channel in one of four preset groups. Within each preset group is eight selectable channels. See Table 1 for a list of frequencies within each preset group. Once configured, up to eight transmitters and receivers may be used in the same location without interference. If more than eight frequencies are required, once a group of eight is selected, go to autoscan mode and continue to set frequencies nine through twelve. If interference occurs within the selected preset group, try switching to the next preset group. If all groups exhibit interference, use manual or auto scan mode to find a suitable channel.
Use the ▲ button to select the PRESET mode so that the ‘PRESET marker appears on the LCD display. Press the SET button for two seconds until the ‘MUTE’ marker appears on the receiver’s LCD display, and when the frequency and channel data start flashing, then release the button. There are four preset groups each with eight preset channels.
Press the up arrow button to select a preset group.
Press the SET button again to change to the channel selection zone within the chosen preset group. Press and hold the ▲ button to scroll through the channel numbers in order to select a preset frequency channel.. Press the SET button to lock the setting or let the selected channel and frequency values keep flashing five times, until they lock into that setting.
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System SYNC Mode: Select the SYNC mode to quick match the interference-free channel on the receiver with Handheld Mic/Bodypack. First use one of the other modes to select an interference-free channel. When using SYNC function, the distance from the receiver and transmitter should be within one metre.
Press and hold the SYNC button on the Handheld Mic/Bodypack. The ‘SYNC’ marker will start flashing on the receiver LCD display.
Keep pressing the SYNC button on the Handheld Mic/Bodypack. Then press the SYNC button on the receiver at the same time. SY N
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When the ‘SYNC’ marker disappears from the LCD display and the RF signal shows up, it will lock the setting and memorize the channel. Now the Receiver and the handheld units are paired.
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System PLEASE NOTE: ALL TRANSMITTERS ARE SOLD SEPARATELY Handheld Transmitter Features: • High sensitivity unidirectional dynamic capsule reduces unwanted handling noise to a minimum • Special noise absorption design which eliminates switch shock and handling noise. • PLL synthesised control. • Accepts two AA batteries (not supplied). • Low battery LED indicator. Figure 2: Handheld Microphone Transmitter C 8892B
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1. Grille: Protects the microphone capsule and helps reduce breath sounds and wind noise. 2. LCD: Displays channel number & battery level. 3. Power ON/OFF Switch 4. Battery Compartment 5. SYNC button: For frequency pairing with receiver.
6. Battery Cover 7. Colour Clip: This colour clip helps to identify the frequency for multi-channel systems operation. 8. Anti Roll Ring: Prevents microphone from rolling when placed on furniture.
Operation: (See Fig 2.) 1. Unscrew to open the battery compartment. 2. Insert two AA Size 1.5V batteries into the battery holder according to polarity (+) and (-) indicators marked on the battery housing. The transmitter accepts dry cell batteries or rechargeable batteries. 3. Replace battery cover. 4. Push and hold the power switch until the LCD illuminates to switch on. The LCD shows channel number and battery status. 5. To change channel/frequency, press the SYNC button and synchronise the receiver and transmitter frequency. See SYNC Mode for operation description. 6. To switch off, press and hold the power button until the LCD displays ‘OFF’. 7. Remove the batteries from the unit if it is not to be used for a long time. This will prevent damage to the unit that a defective leaking battery may cause.
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System Beltpack Microphone: A range of microphones and pickups are available for the belt pack transmitter including tie clip mic, lecture type headset, aerobics type headset and guitar. The belt pack microphone is equipped with a line/mic switch. Figure 3: Beltpack Microphone Transmitter C 8893B
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Power ON/OFF Switch Mini XLR Connector: For microphone or guitar pick-up. Antenna: Permanently connected, helical antenna. LCD: Displays channel number and battery power level. SYNC: For frequency pairing with the receiver. Mic/Line Selector: This switch sets the audio input either to microphone level or line level. Gain: This rotary control adjusts the input audio level of the transmitter. The gain adjustment range is 10dB. Mic Unit: Pictured with the C 8893B lapel. Tie Clip: To clip on the tie or lapel for free-movement. Cable: With mini XLR connector cable to connect the transmitter. Battery Compartment
Operation: (See Fig 3.) 1. Slide open the battery compartment. 2. Insert two AA Size 1.5V batteries into the battery holder according to polarity (+) and (-) indicators marked on the battery housing. The transmitter accepts dry cell batteries or rechargeable batteries. 3. Replace battery cover. 4. Connect the microphone or guitar pick-up to the unit. 5. For microphone set the mic/line switch to mic. For guitar input set to line. 6. To switch on, push the power switch until the LCD illuminates. The LCD shows channel number and battery status. 7. To change channel/frequency, Press the SYNC button and synchronise the receiver and transmitter frequency. See SYNC Mode for operation description. 8. Adjust gain to optimum level. If the unit overdrives reduce gain. 9. To switch off, press and hold the power button until the LCD displays ‘OFF’. 10. Remove the batteries from the unit if it is not to be used for a long time. This will prevent damage to the unit that a defective leaking battery may cause.
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System SPEAKER
Fig 4. Wireless Receiver Connection Via Mic In
WIRELESS RECEIVER
AUDIO MIXER Mic IN
AMPLIFIER
Line IN Line OUT
3 Pin XLR Lead SPEAKER
Fig 5. Wireless Receiver Connection Via Line In
WIRELESS RECEIVER
AUDIO MIXER Mic IN
AMPLIFIER
Line IN Line OUT
6.35mm Stereo jack Lead
Figure 6: The unit may be 19” rack mounted individually, shown in (A). Or side by side with an additional receiver, shown in (B).
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B.
REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System Note: TWO OR MORE WIRELESS MICROPHONES WHICH TRANSMIT AT THE SAME FREQUENCY CAN NOT BE USED IN THE SAME LOCATION. WHEN TWO OR MORE WIRELESS MICROPHONES (HANDHELD AND/OR LAVALIER) ARE USED IN THE SAME LOCATION ENSURE THAT 10 OR MORE CHANNEL SPACES ARE BETWEEN EACH SELECTED FREQUENCY SO THAT INTERFERENCE DOES NOT OCCUR. If interference still occurs (which is due to harmonics) select another frequency. TABLE 1 shows 4 groups of 8 frequencies which may be used together in the same area. ALTERNATIVELY USE THE SCAN FUNCTION.
TABLE 1: 540-570MHz CH
GROUP 1
CH
GROUP 2
CH
GROUP 3
CH
GROUP 4
CH 1
2
540.075
18
540.875
32
541.575
65
543.225
CH 2
47
542.325
113
545.625
95
544.725
182
549.075
CH 3
162
548.075
133
546.625
308
553.575
323
554.075
CH 4
245
551.475
204
550.125
350
554.975
447
558.225
CH 5
399
556.625
264
552.125
378
555.925
504
560.175
CH 6
554
562.675
488
559.575
426
557.525
529
561.425
CH 7
608
565.375
647
567.325
542
562.075
572
563.575
CH 8
631
566.525
661
568.025
679
568.925
698
569.875
TROUBLESHOOTING: Signal dropouts and noise may be suddenly encountered by interruption from outside if there is too long a distance between microphone and receiver, or battery power is low. In such a case, adjust receiver antenna or change battery. No Sound Output
• Check the transmitter and receiver power supply and switch. • Check that the transmitter and receiver are tuned to the same frequency. • Check that the audio amplifier or mixer is switched on and that the receiver output is connected. • Check whether transmitter is too far away from receiver or SQUELCH control set too high. • Check whether transmitter or receiver is located too close to a metal object or there are obstructions between transmitter and receiver.
Sound Interference
• When using two or more microphone sets simultaneously, ensure that the chosen frequencies do not interfere (see Table 1 for frequency guide). • Check for interference from other devices - wireless microphones, TV, radio etc. • Improve antenna location.
Distortion
• Check the receiver volume level is not set too high. • Check for interference from other devices - wireless microphones, TV, radio etc.
PRECAUTIONS: * Avoid extremely dirty or dusty environments. * Avoid use in areas where extremely high humidity is present. * Do not drop the microphone on a hard concrete floor, nor strike the microphone head front with fist or fingers, nor blow strongly into the microphone head front. * Remove the battery in microphone if not in use for a long time. This will prevent damage that a defective "leaking" battery may cause. DESIGN AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE. Page 11
REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System For long distance requirements or special or difficult applications such as stadiums, auditoriums, shopping centres, a range of accessories are available to increase transmission distance or to reduce drop outs. These include: C 8841 or C8841A C 8842 or C8842A C 8843 or C8843A
Ceiling mount antenna Vertical mount antenna booster Mounting bracket to suit C 8842 antenna booster
In addition to the above, for multiple system installations a range of accessories are available to aid cabling and installation. These include: C 8844 or C8844A C 8846 or C8846A
Antenna splitter / combiner Antenna divider
For further information on these and technical help please contact your nearest Redback dealer or consult the product manuals for the above.
The detachable antenna is highly recommended for long-distance purposes, such as in a stadium or in an auditorium.
The antenna booster is designed for long distance receiving applications, eg. if the distance exceeds 30M.
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UHF Antenna
Antenna Mounting Bracket
Antenna Booster
Continued next page
REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System
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REDBACK® C 8890B 700 Channel UHF Band Diversity Wireless Mic System
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REDBACK® C 8890B 700 Ch UHF Band Diversity Wireless Mic System
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REDBACK® C 8890B 700 Ch UHF Band Diversity Wireless Mic System Altronic Distributors warrants this product for 12 months from date of purchase from Altronics or its resellers to the consumer. If this item is part of an installation or another product, please contact the installer or supplier for your warranty. During the warranty period, we undertake to repair or replace your product at no charge if found to be defective due to a manufacturing fault. The warranty excludes damage by misuse or incorrect installation (i.e. failure to install and operate device according to specifications in the supplied instruction manual), neglect, shipping accident, or no fault found, nor by use in a way or manner not intended by the supplier. For repair or service please contact your PLACE OF PURCHASE. If this item was purchased directly from Altronics please make a warranty claim by: 1. FOR MAIL ORDER CUSTOMERS (includes school and trade orders), a) Ringing us on 1300 797 007 and quoting your Tax invoice number. b) Upon contacting Altronics, we will issue an R.A. (Return Authorisation). As Altronics have a number of service agents throughout Australia, a copy of the R.A. will be emailed, faxed or mailed to you with full instructions of how and where to send the goods. The freight for shipping goods back to Altronics for all repairs is at the customers expense. c) A copy of the R.A. form, (or at the very minimum, the R.A. number) must accompany the goods to effect the repair. d) Altronics will pay the return freight to the customer where the warranty claim has been accepted. e) Please quote the R.A. number in any correspondence to us. 2. FOR OVER THE COUNTER PURCHASES; to make a warranty claim, please return the goods to us in any of our stores, with a copy of your proof of purchase (tax invoice). a) Upon leaving the goods at one of our stores, an R.A. (return authorisation) number will be issued to you. b) Once repaired, you will be contacted, advising that the goods are ready to be collected from the store. It is at Altronics discretion as to whether the goods will be repaired or replaced (whilst under warranty); and as to whether identical goods will be used to replace the item due to changes of models / products. Note: Under no circumstances should you attempt to repair the device yourself or via a non-authorised Altronics service centre, as this will invalidate the warranty! Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
NOT FIELD SERVICEABLE. Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia. Phone: 1300 780 999 Fax: 1300 790 999 Internet: www.altronics.com.au Page 16
Revision 12042012
