RU210 - Microphone Citronic - Free user manual and instructions

Product Type	Dual Multi-UHF Wireless System
Brand	Citronic
Model	RU210
Carrier Frequency Range	863.00 – 865.00 MHz
Number of Channels	81 tuneable UHF frequencies
Tuning Method	Phase-locked loop (PLL)
Signal-to-Noise Ratio	>105 dB
Total Harmonic Distortion	<0.5% @ 1 kHz
Frequency Response	50 Hz – 18 kHz (±1 dB)
Maximum Range	60 m (line of sight)
Output Impedance	2.2 kΩ
Output Level (Balanced)	0 – 400 mV
Output Level (Unbalanced)	0 – 200 mV
Power Supply (Receiver)	12 – 18 Vdc, 500 mA adapter (supplied)
Batteries (Transmitters)	4 x AA (1.5 V) included
Receiver Dimensions (W x H x D)	409 x 190 x 44 mm
Handheld Transmitter Dimensions	265 x 49 mm diameter
Bodypack Transmitter Dimensions	110 x 67 x 24 mm
Receiver Weight	1.37 kg
Handheld Transmitter Weight (without battery)	330 g
Bodypack Transmitter Weight (without battery)	75 g
Connectors	DC in, 2 x XLRM, 6.3 mm jack, 2 x BNC antenna
Package Contents	Dual receiver, rack ears, 2 antennas, 2 BNC leads, 2 handheld or 2 bodypacks with neckband/lavalier, power adapter, jack lead, 4 x AA batteries
Special Features	IR sync, dual microphones, group/channel selection, pilot tone squelch
Cleaning	Soft cloth with neutral detergent; sterile wipes for microphone grille

Frequently Asked Questions - RU210 Citronic

How do I pair the transmitters with the receiver?

Press the SET button twice to enter group selection, use ▲/▼ to choose group (1-7), press SET again to choose channel, then press SET to send IR sync. Hold the transmitter's IR detector near the receiver's IR sender to sync.

What batteries does the system use and how long do they last?

Each transmitter uses 2 x AA batteries (included). Battery life depends on usage; the manual recommends alkaline or NiMH batteries and suggests removing them for long periods of storage.

Can I use different microphones with the bodypack transmitter?

Yes, the bodypack has a 3.5mm threaded jack socket for connecting neckband or lavalier microphones. A gain adjustment is inside the battery compartment to match the microphone level.

Why is there no sound from the microphone even though the receiver power is on?

Check that the transmitter is switched on, batteries are good, and the transmitter is within range. Ensure the mute switch on the bodypack is off (for bodypack). Also verify that the receiver and transmitter are on the same frequency (see tuning).

How do I avoid feedback during use?

Do not point the microphone directly at loudspeakers. Keep the microphone at least a few feet away from speakers and reduce volume on the receiver or mixer if feedback occurs.

What is the maximum operating range?

The maximum range is 60 meters under optimal line-of-sight conditions. Walls and obstacles may reduce range.

Can I rack-mount the receiver?

Yes, use the supplied rack ears and BNC extension leads to front-mount the antennas. Do not place heavy equipment above the receiver in the rack.

What should I do if interference occurs?

Try a different group (1-6 have preset channels) or use group 7 to manually select frequencies in 25 kHz steps. Avoid frequencies used by other nearby transmitters.

How do I clean the microphones and receiver?

Use a soft cloth with a neutral detergent for the body of the handheld and receiver. For hygiene, sterile wipes can be used on the microphone grille. Do not use solvents.

Is there a mute function for the bodypack transmitter?

Yes, the bodypack has an Off-Mute-On switch. The mute position cuts the audio while keeping the carrier frequency active, useful for temporarily silencing the mic.

USER MANUAL RU210 Citronic

Dual Multi-UHF Wireless System

Item ref: 171.970UK, 171.971UK

User Manual

Version 1.0

Caution: Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty

Introduction

Thank you for choosing the Citronic RU210 wireless system. This professional wireless set provides 2 high quality microphones with a PLL tuned UHF radio system for freedom of movement without loss of audio quality. Please read this manual before using this equipment in order to avoid damage through incorrect operation and to get the best performance from your purchase.

Package Contents

• Dual UHF wireless receiver
- 19" rack ears
- 2 x UHF antennas
- 2 x BNC antenna extension leads
- 2 x handheld transmitters or 2 x bodypack receivers with neckband and lavalier microphones
- Mains power adapter
- 6.3mm mono jack lead
- 4 x 1.5V AA battery

If you find any accessory is missing or the product has arrived with any problems, please contact your retailer at once.

This product contains no user-serviceable parts so make no attempt to try to fix or modify this item yourself as this will invalidate the warranty. We recommend you keep the original package and proof of purchase for any possible replacement or returned demand.

Warning

To prevent the risk of fire or electric shock, do not expose any of the components to rain or moisture. If liquids are spilled on any component, stop using immediately, allow unit to dry out and have checked by qualified personnel before further use.

Avoid impact or heavy vibration to any of the components, dropping a microphone can cause capsule failure. No user serviceable parts inside transmitter or receiver - refer servicing to qualified service personnel.

Safety

• Ensure that the correct adapter is used with adequate current rating and that the mains voltage is as stated on the adapter.
• Avoid ingress of water or particles into the transmitters or receiver
• Use alkaline or NiMH batteries in the transmitters and remove if unused for long periods.
• Observe the correct polarity when replacing batteries

Placement

• Keep all components out of direct sunlight and away from heat sources.
• Do not place heavy objects on top of the receiver or transmitters
  • If rack-mounting, use rack ears provided and do not place heavy equipment above the receiver.
• Keep the transmitters and receiver away from damp or dusty environments.

Cleaning

• Use a soft cloth with a neutral detergent to clean the body of the handheld transmitter and receiver.
• Lightly damp sterile wipes may be used on the microphone grille for hygiene purposes
- To avoid damage, do not use solvents to clean the components

Receiver

1. Channel A output volume control
2. Channel A Group/Channel setting up
3. Channel A Group/Channel setting down
4. Channel A Group/Channel set
5. LCD display
6. Channel B Group/Channel setting up
7. Channel B Group/Channel setting down
8. Channel B Group/Channel set

9. Channel B output volume control

10. IR sync sender

11. Power on/off switch
12. DC power in jack (5.5 x 2.1mm)
13. Antenna B connector (BNC)
14. Channel B balanced XLRM output
15. Mix A+B unbalanced 6.3mm jack output
16. Channel A balanced XLRM output
17. Antenna A connector (BNC)

Transmitters

1. LCD display
2. IR sync detector
3. On/off switch
4. Battery compartment
5. Antenna
6. On indicator
7. Off - Mute - On switch
8. 3.5mm threaded jack socket
9. LCD display
10. On/off button
11. Battery compartment

Setting Up

Insert the supplied AA batteries into each of the transmitters by carefully unscrewing the base of the handheld microphone or opening the flap of the bodypack to reveal the battery compartment. Insert the batteries (ensuring that + and - are the correct way round for each cell) and carefully replace each cover.

For neckband or lavalier microphones, connect the 3.5mm jack into each of the bodypacks, screwing the threaded jack securely into the socket.

The receiver antennas may be connected directly to the BNC connectors on the rear panel or alternatively front-mounted on rack ears.

If the receiver is to be rack-mounted, place the supplied rack ears against each side of the receiver and fix securely with 2 screws in each. These rack ears have holes for front-mounting the antennas and BNC extension leads for fixing into the holes. These should be connected to the BNCs on the rear panel, creating front sockets for the antennas to connect onto.

A choice of mixed output of both microphones on 6.3mm jack or individual balanced XLR outputs is available on the rear panel of the receiver. Connect the jack or XLR (optional) leads to the relative output connector(s), turn down the volume of any equipment (mixer, amplifier etc.) that the signal will be fed into and then connect the jack or XLRs to the equipment.

Position the receiver within the best available line of sight to the transmitters and connect the DC jack of the supplied power adaptor to the receiver and the plug-top to the mains outlet.

Operation

Turn microphone levels down on the receiver and switch on power on the front panel of the receiver.

Warning! - take care not to point microphones towards speakers – this can cause damaging feedback (loud whistle or howling noise) – try to point microphones away from the speaker cabinets.

For the handheld version, move the switch on each handheld transmitter upward to switch it on and the LCD display should light for a few seconds, showing the carrier frequency and battery status.

For bodypack transmitters, press and hold the front on/off button until the display lights up briefly, ensuring that the Mute switch is off. Displays will show the current carrier frequency and battery status. Transmitter frequencies should match those on the receiver. If not, see “Tuning” below.

Gradually increase the microphone level on the receiver, then increase the volume on the mixer or amplifier until the sound from each microphone can be heard through the equipment.

Tuning

For each microphone, the carrier frequency may be selected on the receiver unit by pressing the SET button twice, which causes the GROUP label to flash in the display. The ▲ and ▼ buttons can be used to select the Group from 1 to 7. Pressing the SET button again causes the CHANNEL label to flash. The channel can be selected within a group using the ▲ and ▼ buttons. Tuning microphone A to a particular channel will mean that the same channel cannot be selected for microphone B and vice versa.

Groups 1 to 6 have between 3 and 5 preset channels, whilst Group 7 allows access to all 81 possible frequencies. Depending upon any other radio signals in the vicinity of the operating environment, one particular Group may offer a better channel spacing than another and this should be determined by experimentation. If a particular group of frequencies results in poor reception or interference, try another or use Group 7 to manually select carrier frequencies in 25kHz steps.

Once a channel is selected, press SET to accept the channel and press SET again to transmit the IR sync signal (animated lines will show next to IR in the display). Hold the IR detector on the handheld microphone or inside the bodypack battery compartment up to the IR sender on the main unit to sync the carrier frequency to the transmitter.

In Use

Switching on each transmitter will open up the radio carrier frequency to the receiver and also send a pilot tone frequency, which is not audible but is used by the receiver to open the audio channel. This system helps to avoid any spurious radio frequencies interfering with the wireless microphone signal.

When the transmitter's RF signal is recognized by the receiver, an RF meter will show the carrier signal strength in the LCD display. Likewise, speaking into the microphone will send audio over this carrier and an AF volume meter will show the audio level in the LCD display.

For neckband or lavalier microphones, there is also a mute switch on the top of each bodypack, which can be used to temporarily cut the microphone output whilst maintaining the carrier frequency. This may be useful to silence the mic whilst moving across the front of speakers or as a standby setting.

In addition, each bodypack has a Gain adjustment inside the battery compartment to match the gain level for the type of neckband or lavalier microphone that is connected to it.

If the wireless system is to be out of use for longer than a few seconds, it is preferable to switch the transmitter off, which mutes the audio, deactivates the radio carrier signal and powers down the transmitter. Be sure to turn down the volume of the mixer or amplifier before switching off the receiver.

Unplug signal leads from the receiver and mixer or amplifier when moving or packing away. If the system is not to be used for long periods of time, remove the batteries from the transmitters and unplug the power adapter from the receiver and the mains outlet.

Folding away or removing the antennas can also help avoid damage when the system is not in use.

Specifications

Power supply	12-18Vdc 500mA adaptor (supplied)
Batteries	4 x AA (included)
Carrier frequency	863.00 to 865.00MHz
Channels	81 tuneable UHF frequencies
Tuning method	Phase-locked loop
S/N ratio	>105dB
THD	<0.5% @ 1KHz
Frequency response	50Hz - 18kHz (±1dB)
Image rejection	85dB typical
Range	60m (max)
Output impedance	2.2k ohms
Output level	Balanced: 0-400mv, unbalanced: 0-200mv
Connectors	DC in, 2 x XLRM, 6.3mm jack, 2 x BNC antenna
Dimensions - handheld transmitter	265 x 49mm∅
Dimensions - bodypack transmitter	110 x 67 x 24mm
Dimensions - receiver	409 x 190 x 44mm
Weight - handheld transmitter	330g (no battery)
Weight - bodypack transmitter	75g (no battery)
Weight - receiver	1.37kg

Troubleshooting

"POWER" LED does not light on receiver	Ensure power adapter is connected to mains and working properly
	Ensure receiver is switched on
"POWER" LED is lit but no "RF" or "AF" LEDs	Ensure transmitter is switched on
	Check that transmitter is not out of reception range
	Check that transmitter batteries are good / charged
	Ensure that genuine Citronic RU series transmitters are being used.
	Ensure transmitter and receiver frequencies are synced (see "Tuning")
"POWER" and "RF" LEDs are lit but no "AF" and no sound	Check that transmitter switch is not in "MUTE" position
	Ensure transmitter has good / charged batteries
	Ensure there is no other nearby transmitter with the same frequency
All LEDs lit but no sound from mic	Make sure receiver is properly connected to amplifier/mixer
	Ensure that receiver and amplifier/mixer channel volumes are turned up
Microphone output is very loud or distorted	Turn down VOLUME on receiver
	Reduce Gain on mixer / amplifier
	Ensure that the XLR output is not fed to a line input
Microphone output is very low	Turn up VOLUME on receiver
	Increase gain on the mixer or amplifier
	Ensure that the jack output is not fed to a low Z input
	Check transmitter batteries

Disposal: The "Crossed Wheelie Bin" symbol on the product means that the product is classed as Electrical or Electronic equipment and should not be disposed with other household or commercial waste at the end of its useful life. The goods must be disposed of according to your local council guidelines

Hereby, AVSL Group Ltd. declares that the radio equipment type 171.970UK and 171.971UK are in compliance with Directive 2014/53/EU

The full text of the EU declaration of conformity for 171.970UK is available at the following internet address: http://www.avsl.com/assets/exportdoc/1/7/171970UK%20CE.pdf

The full text of the EU declaration of conformity for 171.971UK is available at the following internet address: http://www.avsl.com/assets/exportdoc/1/7/171971UK%20CE.pdf

Errors and omissions excepted. Copyright© 2021.

AVSL Group Ltd. Unit 2-4 Bridgewater Park, Taylor Rd. Manchester. M41 7JQ

AVSL (EUROPE) Ltd, Unit 3D North Point House, North Point Business Park, New Mallow Road, Cork, Ireland.