Redback C 8860 Owner's manual

www.altronics.com.au
UHF BAND AUTO SCAN
WIRELESS MICROPHONE
SYSTEM
®
O
OPERA
PERATING TING
I
INSTRUCTIONS
NSTRUCTIONS
Manufactured exclusively for Altronic Distributors Pty Ltd
REDBACK®C 8860 UHF Band Auto Scan Wireless Mic System
Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia.
Phone: [phone] Fax: [phone]
Internet: www.altronics.com.au

REDBACK®C 8860 UHF Band Auto Scan Wireless Mic System REDBACK®C 8860 UHF Band Auto Scan Wireless Mic System
Page 6
REDBACK®C 8860 UHF Band Auto Scan Wireless Mic System
Overview
The C 8860 features an Auto-Scan system allowing quick and easy selection of an interference free
operating frequency. This is particularly useful when there are many existing systems in use nearby.
Incorporates diversity reception ensuring a consistent and clear microphone signal with minimal dropout
and noise interference. 16 channels allow interference free operation with multiple systems in the one
location. Noise reduction system automatically compensates for high level sound inputs thus avoiding
distortion. Channel and volume settings are adjusted via front panel. Transmitters can be recharged via a
front panel port (when fitted with rechargeable batteries). A range in excess of 100m is possible in ideal
conditions. Output is via 3 pin XLR balanced or 6.35mm unbalanced. LEDs are provided for displaying
system status. The system operates from 12-18VDC (power supply included).
Features:
• 16 Channels in 800MHz UHF Band
• LED display shows selected channel
• Half rack 1RU desk mount case
• Dual diversity
• Transmitter battery recharging facility
• Tone squelch circuit
• Range over 100m in ideal conditions
• 6.35mm line output
• 3 pin balanced XLR mic output
Receiver Specifications:
Carrier Frequency Range ......................................................................................................................UHF band
Frequency Stability ....................................................................................................................................±0.005%
Receiving Sensitivity........................................................................................At 8 dBµV over 80dB S/N ratio
Image and Spurious Rejection....................................................................................................80 dB minimum
Selectivity........................................................................................................................................................>50dB
Modulation Mode ..............................................................................................................................................FM
IF Frequency ..................................................................................................................1st: 56MHz; 2nd: 10.7MHz
Tone Signal..............................................................................................................................................32.768KHz
S/N ratio....................................................................>94dB, at 48KHz deviation and 60dBµV antenna input
AF Response ......................................................................................................................80Hz to 12KHz (±3dB)
T.H.D. ..............................................................................................................................Less than1.0% (at 1KHz)
Power Supply ..................................................................................................................................DC 12V ~ 18V
Audio Output ....................................................Balanced and unbalanced outputs (Mic. -20dB / Line 0dB)
Current consumption ......................................................................................................................150mA (Max.)
Note: TWO OR MORE WIRELESS MICROPHONES (HANDHELD AND/OR LAVALIER)
WHICH TRANSMIT AT THE SAME FREQUENCY CANNOT BE USED IN THE SAME
LOCATION.
DESIGN AND SPECIFICATIONS SUBJECT TO BE CHANGED WITHOUT NOTICE.
PRECAUTIONS:
* AVOID EXTREMELY DIRTY OR DUSTY ENVIRONMENTS.
* AVOID AREAS WHERE THERE IS EXTREMELY HIGH HUMIDITY.
Page 1
Fig 8: Connecting the transmitters to the charging circuit
IMPORTANT NOTE:
DO NOT CONNECT THE CHARGER CABLE
WHEN USING NON-RECHARGEABLE (DRY
CELL / ALKALINE) BATTERIES IN THE
TRANSMITTER.

REDBACK®C 8860 UHF Band Auto Scan Wireless Mic System REDBACK®C 8860 UHF Band Auto Scan Wireless Mic System
Page 5
REDBACK®C 8860 UHF Band Auto Scan Wireless Mic System
Operation: (See Fig 1.)
Note: Do not operate transmitters nearby when setting frequency on the receiver. Ensure all transmitters
are at least 2 to 3m away.
• To turn power on, press and hold the power button for 2 to 3 seconds until display illuminates.
• 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. See figures 6 and 7 for connection information.
• For best results set the output volume control at three quarter level (3 o'clock position) and adjust
mixer / amplifier level to suit.
• The squelch level is adjustable by the squelch adjustment 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.
• When the receiver is not in use disconnect from mains power.
• A maximum number of 6 Redback systems can be used in the one location at the same time.
Manual Mode
1. Press “set/scan” button for 1 second. Display will flash the current channel number set.
2. Press the channel selection UP/DOWN buttons for 2 seconds to change the channel as desired.
3. After channel is selected the display will flash 5 times before locking in your selection.
Auto-Scan Mode
1. Press “set/scan” button for 3 seconds to initiate auto scan mode. The system will lock in the next
interference free channel it locates.
2. After receiver selects a channel it will flash the display 5 times before locking in the selection.
3. If using multiple systems in the same area, ensure all systems (receivers and transmitters) are
switched on so that the auto-scan function will ignore occupied channels.
Note: An interference free channel must be selected on the receiver before you can set up the
transmitters to a matching channel.
1. Power Switch
2. RF Level Indicator
3. Channel Display
4. Channel Selectors
5. Set/Scan Button
6. Level Control
7. Transmitter Charging Port
8. Antenna B
9. Balanced Output
10. Unbalanced Output
11. Mic/Line Switch
12. Squelch Adjustment.
13. DC Socket
14. Antenna A
Fig 1:
Page 2
Fig 5: Fitting the rack mounting brackets to
the unit.
1
8910 11
2 3 4 5 6 7
12 13 14
3 Pin XLR Lead
AMPLIFIER
SPEAKER
Mic IN Line IN
AUDIO MIXER
WIRELESS
RECEIVER
Line OUT
6.3mm Stereo Jack Lead
AMPLIFIER
SPEAKER
Mic IN Line IN
AUDIO MIXER
WIRELESS
RECEIVER
Line OUT
Fig 6. Wireless Receiver Connection Via Mic In
Fig 7. Wireless Receiver Connection Via Line In

REDBACK®C 8860 UHF Band Auto Scan Wireless Mic SystemREDBACK®C 8860 UHF Band Auto Scan Wireless Mic System
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REDBACK®C 8860 UHF Band Auto Scan Wireless Mic SystemREDBACK®C 8860 UHF Band Auto Scan Wireless Mic System
Page 4
Handheld Transmitter Features:
• High sensitivity cardioid capsule reduces unwanted handling noise to a minimum
• Special noise absorption parts, which eliminate switch shock and handling noise.
• PLL synthesized control circuitry.
• Easy-opening battery compartment for quick replacement. Requires 2 x AA batteries (not supplied).
• Low battery LED indicator..
Specifications:
Carrier Frequency Range ..................................................................................................................UHF band
RF Power Output ..........................................................................................................................10mW (max.)
Oscillation Mode................................................................................PLL synthesized, 16Channel selectable
Frequency Stability ................................................................................................................................±0.005%
Maximum Deviation ................................................................................±48KHz with limiting compressor
Spurious Emission ..........................................................................................>60dB below carrier frequency
T.H.D. ............................................................................................................................................<1% (at 1KHz)
Handheld Microphone Capsule ......................................................Uni-directional electret condenser unit
Tone Signal ..........................................................................................................................................32.768KHz
Battery ......................................DC3V (2 x 1.5V AA alkaline ) or DC 2.4V ( 2 x 1.2V AA rechargeables)
Current consumption......................................................................................................................110mA at 3V
Operation: (See Fig 3.)
1.Unscrew the bottom half of the microphone, to access the battery compartment and channel selector.
2. Insert 2 x AA Size 1.5V batteries into the battery holder according to polarity (+) and (-) indicator
marked on the battery housing.
3. Set the rotary channel selection switch to the same channel as your receiver.
4. Screw the battery cover back onto the microphone.
5. Push the power switch to "ON". The LED indicator will flash once to indicate the unit is operational.
6. Push the power button to "OFF" when mic is not in use. Remove the batteries from the unit if not to
be used for a long time. This will prevent damage to the unit that a defective "leaking" battery may
cause.
7. If the LED indicator is permanently illuminated, the battery needs to be replaced.
1. Screen head
2. Low battery LED Indicator
3. ON/OFF switch
4. Battery compartment
5. Group selector
6. Channel selector
7. Battery cover
8. Charging input
Fig 2:
12 3 4
8
5 6 7
PLEASE NOTE: ALL TRANSMITTERS ARE SOLD SEPARATELY
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 pickup. The belt pack microphone is equipped
with a line/mic switch.
Operation: (See Fig 4.)
1. Push to open the battery cover.
2. Insert 2 x 1.5V batteries into the battery holder according to polarity (+) and (-) indication marked
on the battery housing.
3. Set the rotary channel selection switch to the same channel as your receiver.
4. Replace Battery Cover.
5. Connect the microphone or guitar pickup to the unit.
6. Set the line / mic switch to match the sound source (line / mic). Line is for guitar input.
7. Push the power switch to “ON”. The LED indicator will flash to indicate the unit is operational.
8. Push the power button to “OFF” when mic is not used, and remove the battery in microphone if not
used for a long time. This will prevent damage to the unit that a defective "leaking" battery may
cause.
9. If the LED indicator is permanently illuminated, the battery needs to be replaced.
10. If the LED indicator does not flash at all when first switched on then check battery is inserted
correctly and batteries are not completely flat.
PRECAUTIONS:
* AVOID EXTREMELY DIRTY OR DUSTY ENVIRONMENTS.
* AVOID AREAS WHERE THERE IS EXTREMELY HIGH HUMIDITY.
* TWO OR MORE WIRELESS MICROPHONES (HANDHELD AND/OR LAVALIER) WHICH
TRANSMIT AT THE SAME FREQUENCY CAN NOT BE USED IN THE SAME LOCATION AS
THIS WILL CAUSE INTERFERENCE.
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LINE MIC.
OFFON
LO W B A TT
INPUT
() *+
() *+
1
13
9
5
1. On/Off switch
2. Low batt. LED
3. Line/mic switch
4. Cable
5. Antenna
6. Frequency select.
7. Gain control
8. Lavalier microphone*
9. Tie clip*
10. Battery compartment
11. Charging input
*Sold separately
1
2
3
7
8
9
10
11
5
6
4
Fig 3:
PLEASE NOTE: ALL TRANSMITTERS ARE SOLD SEPARATELY