Av-Art WR-930A User manual

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AV V- -A AR RT T W
WR R- -9 93 30 0 S SE ER RI IE ES S
Instruction Manual
Thank you for purchasing this product
Please read this manual before using Guarantee included

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PRODUCT WARRANTY
Description
This product is through high-quality products strict quality management
and inspection, where the customers to buy the products in normal use can be according
to the following guarantee.
1. By the letter of guarantee from the date of purchase within one year. In normal use failure or
damaged parts replacement parts free of charge.
2. In the guarantee period, natural disaster, because of improper operation or other human
factors (including non repair or replacement of damaged the company's installation
site damage) the parts are damaged, or fails to provide guarantee, the guarantee
period or more will charge the parts cost.
3. Generally outside the family (such as business relations, long
time use business places, vehicle or ship) using site failure or not in the free
repair guarantee range.
4. If malfunction, please stop using do not self demolition, so as not to affect the product
quality and safety.
5. Please keep the warranty, if the loss of the company is no longer a
replacement, the guarantee if no seller signature also no effect.
AVART PRODUCT WARRANTY
CLIENT:________ DISTRIBUTOR
DATE:________
PRODUCT:________
SERIAL NUMBER:________
CONTACT:____________________________

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INDEX
Product warranty…………………………………………………………………………2
The index …………………………………………………………………………………3
Product features …………………………………………………………………………3
Technical specification…………………………………………………………………4
WR-930A /WR-930D the name specification …………………………………… 5
WM-915 the name and description of function …………………………………7
Solution for frequent asked problem…………………………………………………9
Product features
Wireless microphone to the company's use of UHF automatic frequency and high
sensitivity, its biggest characteristic is can be wired microphone equal quality and
stability, can also enjoy free singing sensation.
The wireless system for radio frequency of 2 32 band, A CH(Hz) and B CH (Hz), select
the appropriate frequency range.
Antenna streamlined microphone tube body and a hidden type can have a comfortable
grip and easy battery replacement, patent design does not drain battery liquid so that the
microphone is stronger.
Note: Only use frequencies that at approved and legal in your country and follow this instruction
manual.

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TECHNICAL SPECIFICATION
Technical data and specifications (System characteristics)
Carrier Frequency Range: UHF518MHZ~928MHZ
Frequency stability:±0.005%
Modulation: FM
Peak deviation: ±48KHZ with Audio Compandor
AF Frequency Response: 50HZ~18KHZ
Operation Temperature Range: ﹣10℃~55℃
(Receiver characteristics)
Antenna inputs:4 monopole Antenna (2Monopole Antenna with power splitter)
Receiving principle: True Diversity
Oscillator:PLL synthesized
Receiving Sensitivity: At 12dBuV antenna input over 80dB S/N ratio
Audio dynamic range:＞90dB
S/N ratio : ＞100dB, at peak deviation and 50dBuV antenna input
Total Harmonic Distortion :＜1% (at 1KHZ)
Receiving Squelch: SQ VR (at Max):25dBuV antenna input
SQ VR (at Min):10dBuV antenna input
Audio output level: Balance Max. ﹣12dBV (Mic) 660ΩLoad
Unbalance MAX. ﹣5dBV(Line)/ ﹣15dBV(Mic)/660ΩLoad
Power Supply:12VDC 400mA±50mA
SIZE (L×W×H) about43×30×7cm
Weight: about 1857g
(Transmitter Characteristic)
RF Power output: 10dbm (High)/ 4dbm (Low) (Hand-Held)
10dbm (pocket)
Oscillator: PLL synthesized
Current consumption: 150mA (High)/60mA (Low) (Hand-Held)
95mA (Pocket)
Battery:DC1.5V(AA) × 2
Size: Hand-Held:ψ53×240mm
Pocket:112×66×25mm (L×W×H)
Weight: approx.390g (Hand-Held) (without battery)
approx.86g (pocket) (without battery)

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WR-930A/WR-930D SPECIFICATION
1. Power switch: Operate the receiver (when receiver turns on, the light is bright.)
2. Volume controller: Control the level of volume (before switching on the power, please
turn the volume to min. to protect loudspeakers of your system.)
3. Diversity A.B. Indicator: This LED lights to indicate that A or B RF signal is being
received.
Interference Indicator: This LED lights with red color to indicate the chosen frequency
are interfered, you must to change anther frequency from channel selector.
4. AF level signal lamp: Indicate Audio signal level. The audio signal with microphone
emits, the LED is bright.
5.32 channels selection:Offer 32channels.A CH is from 614 to 630 M Hz: B CH is between
677 and 693 M Hz. (Set the receiver and transmitters in the same channel.)
6.Antenna: Fixed antenna turns 180°. The best position is right angle (90°),referring to the
picture as below.
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1. Balanced /Unbalanced volume switch: ”LOW” represents audio output; ”HIGH” stands
for AUX output.
2. XLR output: Output for the XLR audio signal.
3.φ6.3 A CH+B CH mixing audio output.
4.”SQ”controller: Level of SQ can be reset if needed. Increase muting in clockwise to
avoid signal interference, but shortening the best situation after assembling.)
5. DC power supplier plug: connecting DC power adapter (DC 12~15V, 800mA)
6.Antenna: Fixed antenna turns 180°. The best position is right angle (90°),referring to the
picture as below.

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7
WM-915 DESCRIPTION OF FUNCTION
1. Microphone head: Protect microphone unit and reduce noise “POP”
2. Color-coded protection ring: avoid microphone rolling on the surface and help to
distinguish different channels.
3. Sound head: the sound signal is converted into electronic signals. This product uses
a separate portfolio.
4. Microphone body: Metal or plastic material (Metal material presents better texture.
Plastic material is easy to use.) Chassis assembling with microphone unit and PCB
inside the body and battery case are one-piece molding.
5. EVA pads: prevent battery loose.
6. Battery case: Insert batteries &ensure the correct polarity(2×AAA)
7. Power switch: Turn “ON” when using microphone; turn ”OFF” when not using
microphone.
8. Audio level signal lamp: Indicate the level of the receiving voice. The louder the sound
is, the brighter the LED is.
9. RF power level switch: To change transmitter RF power.
10. 32 channels selection: Offer 32 channels shoeing as below. (Set the receiver and
transmitters in the same channel.)
11. Frequency standard: marking channel selector corresponding to the frequency
of each channel, there are 32 combinations.
Main features
1.Emission circuit using PLL phase radiation characteristics of low harmonic most
stable locking oscillation circuit.
2. Emission circuit adopts a channel selector, channel to set the use, the channel must be
the same, and receiver channel, simple operation, low failure rate.
3. The connecting end and transmitting circuit with 3 sound head, easy
disassembly and assembly, with a variety of sound head for the user to debug using.
4. Head and body aluminum upper separate circuit switch
combination , ON/OFF, audio display light (blue light) with power shortage
and display (red light) in combination with aluminum tube at the lower part of the body of
plastic components , replace the battery 2 AA5 batteries) or confirm the channel, on the
lower body to plastic components ,convenient operation.
5. Transmitter module exclusive design (sound head, transmitting circuit) and the network
head, aluminum body with one firm, no fracture. The battery holder and transmission
circuit isolation patent design, battery fluid will not damage to a transmitting circuit, the
battery will not loose.

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NOTICE
1. These products follow the relevant regulations set by NCC, Taiwan & FCC, The U.S.A.
2. It is possible to cause interference between different RF in UHF system.
3. Do not point microphone head direct to speaker to avoid loud hissing noise which may
cause damage to your hearing or the loudspeakers of the system.
4. Do not use external force to damage products for a longer lifetime.
5. Do not place or storage products in the environment of high humidity and temperature
for a long time.
6. Please remove batteries for protection of the transmitters when not using transmitters in
a long time.
7. Do not take the products apart to repair by yourself if any problem occurs.
Solution for frequent asked problem
Problem
Possible cause
Possible solution
No RF signal
Microphone and receiver are
not on the same channel.
Set the microphone to the same
channel as the receiver
Microphone is out of range.
Check the squelch threshold setting
Shorten the distance between
microphone and receiving antenna
Microphone or receiver turns
off.
Ensure the correct polarity and turn
on the switches.
Microphone is out of battery.
Replace new batteries.
Disconnection
to a certain
channel or noise
Signal interference from the
environment
Reposition the antennas
Reset ”SQ”
Set the microphone and receiver to
another channel
TROUBLESHOOTING

Cautions to the user
RF exposure statements
Notice:
The changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
IMPORTANT NOTE:
To comply with the FCC RF exposure compliance requirements, no change to the antenna or
the device is permitted.Any change to the antenna or the device could result in the device
exceeding the RF exposure requirements and void user’s authority to operate the device.
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