PDWM4400
PDWM4400
VHF WIRELESS SYSTEM
OPERATION MANUAL
VHF WIRELESS SYSTEM
OPERATION MANUAL
A.Overall system
Oscillation mode: Quartz controlled
Carrier Frequency Range: VHF 169-270MHz
Stability: 0.005%
Max Deviation: 56KHz with level limiting
Dynamic Range: 100dB
S/N Ratio: 80dB
T.H.D: 0.5%
Squelch: "Pilotone & Noise lock" dual squelch circuit
Frequency Response: 100Hz~15KHz
Operating range:
Up to 240 Feet
B. Receiver
Sensitivity: 6dB V at S/N>90dB
Image Rejection: >60dB
Stability: >80dB
Audio output: -12db/600ohms unbalanced and balanced
Power supply: 15VDC/0.5A
Dimensions: 16.5 8.2 1.8 inch
C. Transmitter
Mike capsule:
Antenna:
Condenser Microphone(Headset mic/clip-on mic)
External
RF Output: <10mW
Spurious: <-40dB
Battery: one 9V battery
VHF WIRELESS SYSTEM
OPERATION MANUAL
Thank you for buying the PDWM4400 Wireless System. Please
read through these operation instructions so you will know how
to operate your model properly. After you read it, put it away in a
safe place for future reference.
Precautions
System diagram
Bodypack transmitter
Receiver Front panel
Receiver Rear Panel
Installation
Trouble shooting
Specifications
* Avoid exposure of the system to rain or moisture.
* No user-serviceable parts inside the system. Refer all servicing to a qualified
technician only.
* Handle the wireless system carefully, dropping or other shocks may cause
failure.
* Avoid using the system where it may be subjected to heat, such as direct sunlight,
near radiators or other heat sources.
* Should any liquid be spilt on the system, stop using it immediately. It may be
possible to dry the system, but you should have it checked by a qualified technician
before using it again.
* Take care with the main power adapter and lead. If damaged in any way, do not use
the system and refer to a qualified technician for repair.
* Only use the system with the supplied components. Do not attempt to use with any
* other main power supply adapter .
wireless system
* If the is not going to be used for a while, remove the battery to
prevent leakage. In the event of electrolyte leakage inside the battery compartment,
carefully remove the leakage with a damp cloth. Take care not to get battery
electrolyte in contact with your skin, however if it does, wash your hands under a
running tap. If electrolyte comes into contact with your eyes, seek medical advice
immediately.
* Only replace the battery with the same or an equivalent type.
* Please dispose of old batteries in an environmentally friendly manner in accordance
with the relevant legislation.
* Do not use any solvents to clean any part of the .
wireless system
8
POWER
PDWM4400
PDWM4400 VHF PROFESSIONAL FOUR CHANNEL WIRELESS MICROPHONE SYSTEM
VOLUME
RF
CHANNEL 1
AF LEVEL
PDWM4400
VOLUME VOLUME VOLUME
RF
CHANNEL 2
AF LEVEL
The wireless microphone is not
turned on.
The on air
indicator does
not light up
The microphone receiver is not
turned on.
The microphone receiver is not
connected properly.
The battery in the wireless
microphone is weak.
The microphone receiver is not
No sound
turned on.
The connected audio equipment is
not turned on.
PDWM4400
PDWM4400
The speakers/headphones. are not
connected to the audio equipment.
The battery in the wireless
microphone is weak.
The AUDIO OUT on the receiver
is not set correctly.
RF
CHANNEL 3
AF LEVEL
RF
CHANNEL 4
The sound is
distorted
AF LEVEL
The distance between the wireless
A howling noise
heard from the
speakers.
microphone and speakers are too
close.
The battery in the wireless
microphone is weak
Turn on the wireless microphone
Turn on the microphone receiver
and the connected audio equipment
Turn on the microphone receiver
and the connected audio equipment
Replace the battery.
Turn on the microphone receiver
and the connected audio equipment.
Turn on the audio equipment.
Connect the speakers/
headphones
Replace the battery.
Adjust the volume controls.
Move the wireless microphone
away from the speakers or
change the direction of the
microphone.
Replace the battery.
7
Using the supplied audio cable, connect from the MIXED jack socket to the
"MIC IN" / "LINE IN" socket on amplifier.
Alternatively, you can connect an
optional XLR cable from the "XLR MIXED" socket on the receiver to a
professional mixer.
Connect the mains power adaptor from "DC 15V" jack to
a suitable mains power socket.
Installation Location:
At least 3 ft. above ground level
At Least 3 ft. away from wall
MIC LINE MIC LINE MIC LINE MIC LINE MIC LINE
AUDIO OUTPUT JACK
AUDIO SWITCH
ON MUTE
MIC/LINE
AUDIO POWER ATTENUATION POWER
LOW BATTERY LED
POWER LED
VOLUME SWITCH
POWER SWITCH
LOW BAT
-20dB
0dB
OFF ON
BELT CLIP
BATTERY COVER
9V +
ANTENNA
HEADSET MIC
LAVALIER MIC
XLR MIXED
MIXED
6
1. Open the battery cover to install a 9V battery (check polarities). Move the power switch to the ON position. The to
indicate normal operation. If the LOW BAT indicator turns red, replace with a fresh battery promptly.
power indicator will be green
2. Before operation, please confirm that the frequency of transmitter is same as the frequency of receiver. Plug the 3.5mm connector of headset mic
to screw-lock socket of transmitter. Move the audio switch to ON position.
The MUTE switch cuts off the audio output without shutting off the
transmitter.
ATTENUATION is for volume adjustment. Move it to 0dB position to get normal volume output. Move it to -20dB position to reduce distortion and
3.
avoid feedback.
4. If the system will not be used for a long time, please switch off the transmitter to avoid power consumption.
FRONT PANEL
3
3
REAR PANEL
1
PDWM4400 VHF PROFESSIONAL FOUR CHANNEL WIRELESS MICROPHONE SYSTEM
VOLUME
POWER
2
12
1. Power Indicator
2. Power Switch
3. Antenna
4. CH-1 RF Signal Indicator
5. CH-1 AF Indicator
6. CH-2 RF Signal Indicator
5
4
AF LEVEL
RF
CHANNEL 1
7. CH-2 AF Indicator
8. CH-3 RF Signal Indicator
9. CH-3 AF Indicator
10. CH-4 RF Signal Indicator
11. CH-4 AF Indicator
12. CH-1 Volume Control
VOLUME VOLUME VOLUME
13
6
RF
CHANNEL 2
7
AF LEVEL
Attach the two antennas and extend them vertically. Switch
on the receiver. The red power indicator will come on.
Switch on the transmitter. The red indicator RF/Channel1,
RF/Channel2, RF/Channel3, RF/Channel4 will come
on to
indicate signal reception. The green AF LEVEL meters
indicate the audio level.
8 9 10
AF LEVEL
RF
CHANNEL 3
14
15 1616
RF
CHANNEL 4
11
AF LEVEL
13. CH-2 Volume Control
14. CH-3 Volume Control
15. CH-4 Volume Control
16. Rack Mounts
Adjust the volume of receiver, transmitters and amplifier.
Please switch off the receiver, transmitters and amplifier
when the wireless microphone system is not being used.
MIXED
XLR MIXED
18 19 20
17
17.Mixed balanced output jack
18.Mixed unbalanced output jack
19.Individual unbalanced output jack
20.Squelch adjustor
21.DC Power in
SQUELCH
The squelch control on the rear of the receiver is preset at the factory.
If you must use the system in an area with considerable RF
interference and there is some noise from the receiver when your
transmitter is off, you can adjust the squelch control so that the system
will receive the signal from your transmitter only but squelch or
eliminate the unwanted background RF noise. This adjustment can
21
cause reduction in useable range of the wireless transmitter, so set the
control to the lowest position that reliablely mutes the unwanted RF
signals.
Note that switching the microphone on and off can cause interference
that will be heard if the microphone volume level of the amplifier
system is still set high.
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