Derrica U-6298 User manual

FCC Caution.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.
* RF warning for Portable device:
The device has been evaluated to meet general RF exposure requirement. The device can be used in portable
exposure condition without restriction.
User’s Manu
for
UHF wireless microphone
U-6298 U-6198
When you want to set-up a new frequency, please do use the AUTO Searching function by
pressing Set-Up key in 1 seconds of the receiver to search the best frequency around you, and then
press the Set-Down key for 1 seconds and put the transmitter IR close to the Receiver IR window, to
match the receiver and transmitter in same frequency.
Don’t just press the Set-UP or DOWN key to change a new frequency simply.
▲2*100 Channels 1*100 channels
▲Auto channel searching，infrared channel matching
▲microphone (transmitter) can be worked with anyone of this
receiver

Preview
Welcome to choose this UHF wireless microphone system. This UHF wireless
microphone system is professionally designed and manufactured with:
●Perfect sound quality
●The improved DPLL receiving mode with multi-channels
●UHF frequency, 2*100 channels to avoid interference.
●100 frequencies in each Microphone makes more stable operating , more reliable
transmitting.
●Auto-channel-searching and locking makes the operating easily.
●Infrared-channel-matching makes the operating of matching the receiver and
transmitter in same frequency easily.
Don’t operate the system under the following situation, for any repairing, only
professional technicians are allowed to avoid danger.
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Receiver Operating------------Receiver Front Panel
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6 5 4 3 2 2 1
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Receiver Rear Panel
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6 7 8 9 10 8 7 6
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1. Power On/Off
2. Volume
3. Set-A and Set-B
Searching Best Frequency: Press “SET-- ▲” key for 1 second to search the best operating
channel (frequency)
Auto Matching: Press “SET--▼-”key for 1 second, put the transmitter ASC aim to the
receiver ASC window, transmit the channel index to transmitter, it may automatically matching the
channel between receiver and transmitter.
press “▲” or “▼”in 3 second to change the selected channel, press “SET-
▼”key for 1 second again to match the transmitter (we don’t prefer to change the
channel in this way)
4. ASC window
5. LCD display: Channel number, RF level, AF level, Mute, Frequency
6. Antenna
7. Audio balanced output
8. Squelch and noise mute adjusting button. Adjusting range is 0-40dB.
9. Audio Unbalanced output
10.Power Jack: connecting a 12v DC 50/60Hz adaptor for power.
LCD of receiver
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1. 8-level RF display: to display the RF level
2. 8-level AF display: to display the AF level
3. Frequency display: when FREQ lighting, the last 6 figure means the working frequency.
4. Channel Display: when CHAN lighting, it display the working channel.
5. Channel or Frequency display. It shows the working channel or frequency.
6. MUTE display: MUTE lighting means the system hasn’t receive the RF signal.
Receiver Operating
1. Turn Off the transmitter, Turn the Volume to “low”.
2. Turn on the receiver, check the RF and AF level, if interference too large, change the channel to
avoid any interference .
3. Turn on the transmitter, the working RF-level display lighting, turn the volume to suitable level, then
speak, the AF-level display working according to your voice.
4. Take off the power switch when finish using.
--3--
Auto searching Channel
1. Set-up the left Channel (Set.A)
Press “SET--▲” key for 1 second, the display shows the system is automatically searching the best
workable frequency (channel). (Picture 1).
Infrared matching channel
Put the transmitter’s ASC sensor close to the receiver’s ASC sensor, press “SET--▼” key for 1
seconds, it will automatically transmit the channel index to the transmitter (microphone)----(Picture
2)
After the 1st and 2nd steps fnished, the handheld microphone (transmitter) LED light,means working.
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2. Set-up the right channel (Set.B)
Set-up the right channel (Set.B) in same steps.
When the microphone and receiver shows same channels, the system is workable.(Pic. 3)
Remarks: press “▲” or “▼” in 3 seconds to change the working channel. (we
don’t prefer to change the channel in this way)
--4-

Function of Handheld Transmitter(Microphone in Metal body)
1. Microphone head
2. ASC sensor
3. LCD display
4. Up/Down key, for changing channel or frequency
5. Handheld mic---Power ON/OFF switch—press it for 5 seconds
Mute—Press it for 3 seconds
Bodypack Transmitter: ON—MUTE--OFF
6. Battery case: 2pcs of 1.5v AA batteries.
7. Gain
8. Microphone Input Jack
--5--
LCD display of transmitter (Microphone)
1. Frequency : indicate the working frequency
2. Channel: indicate the working channel
3. Low battery display: indicate the battery state.
Operating of the handheld transmitter (Microphone)
1. Turn on the transmitter, the LCD display will show the frequency, channel, battery state.
2. If the display show different frequency (channel) with receiver, take the microphone “ASC
sensor” close to the receiver “ASC” window, press the receiver “SET-- ▼” key for 1 second,
check again the receiver and microphone are in same frequency (channel), the RF light on the
front panel of receiver lights, then the system is workable.
BATTERY
1. Screw out the battery case cover, push it out.
2. Put in 2 new 1.5v AA (NO.5) batteries, please make sure the batteries in right
direction.
3. Push the cover in and make it tighten.
Take off the batteries if not using for long time, the waist batteries must
be take to Recycling Box.
--6--

Technical Index
System
Carrier Frequency Range: 480-529.75MHz
Mode: FM (wide band)
Channels:100 channels * 2
Channel distance: 1MHz
Stability: +/- 0.005%
Dynamic Range: 100dB
Max deviation: +/-45KHz with level limiting
Frequency Response: 60Hz-18KHz (+/-3dB)
S/N ratio: >98dB
T.H.D.: <0.5%
Operating Range: 80m (under typical conditions)
Ambient Temperature: -10℃~+50℃
Receiver
Receiving Mode: DPLL
M Frequency: 110MHz, 10.7MHZ
Antenna input: BNC/50Ω
Sensitivity: 7dBuV (90dB S/N)
Sensitivity Adjusting Range: 12-32dBuV
Noise Rejection: >75dB
Max output Level: +400mVp
Handheld Transmitter
RF Output power: +8dBm (6.3mW typical)/50Ω
Harmonic/Spurious emission: -50dBc normal
Input Impedance: 10kΩ
Controls: Power OFF/ON, MUTE
LCD/LED Display: Channel/Frequency, BATT status, Mute LED
Antenna Type: Integral
Battery Type: 2 x AA alkaline or NiMH
Battery life: 8-10 hours typical, alkaline
Dimensions: 9.5”L x 1.5”D (24.1cm x 5.1cm)
Weight (w/o batteries): 10.4 oz (323.5g)
Housing Construction: ABS Plastic
Body-pack Transmitter
RF Output power: +8dBm (6.3mW typical) /50Ω
Harmonic/Spurious emission: -50dBc normal
Input Impedance: 5kΩ (Lavaliere); 500kΩ (Instrument)
Controls: Power OFF/ON, MUTE
Input Connector: locking 3.5mm mini-jack
LCD/LED Display: Channel/Frequency, BATT status, Mute LED
Antenna Type: External attached
Battery Type: 2 x AA alkaline or NiMH
Battery life: 8-10 Hours typical, alkaline
Dimensions: 2.5”W x 0.75”H x 4.2”D (6.35cm x 1.9cm x 10.7cm)
Weight (w/o batteries): 2.6 oz (80.87g)
Housing Construction: ABS Plastic
--7--