Chiayo NDR-3120 is a UHF Dual-Channel Auto Sync Receiver that offers reliable wireless microphone operation for various applications. With its auto-sync feature, you can conveniently synchronize the receiver and transmitter with ease. The receiver boasts adjustable volume control, channel selection, and squelch level adjustment to optimize audio performance. Its balanced and unbalanced audio outputs provide connectivity options for mixers and amplifiers, making it suitable for both professional and personal use.
Chiayo NDR-3120 is a UHF Dual-Channel Auto Sync Receiver that offers reliable wireless microphone operation for various applications. With its auto-sync feature, you can conveniently synchronize the receiver and transmitter with ease. The receiver boasts adjustable volume control, channel selection, and squelch level adjustment to optimize audio performance. Its balanced and unbalanced audio outputs provide connectivity options for mixers and amplifiers, making it suitable for both professional and personal use.
Operation manual
CHIAYO ELECTRONICS CO., LTD.
NDR-3120
UHF Dual-Channel Auto Sync Receiver
0
6
9 9
IR RF AF SYN CCHANNEL
MIN
MAX
MIN
MAXIR RF AF SYN CCHANN EL
NDR-3120
WIR ELESS REC EIVER
PWR
1
NDR-3120
UHF Dual-Channel Auto Sync Receiver
Thank you for choosing this wireless microphone system! For more details, please take a few
moments to read this operating manual to have a thorough understanding of the function and
operation of both transmitter and receiver.
In the box
NDR-3120 receiver
two transmitters
(handheld/beltpack)
audio cable
switching adaptor
operation manual
** Remark: The above specifications are subject to change without prior notice.
Important
1. Please make sure that the output DC voltage range of the switching power covers that
specified by the receiver before turning it on.
2. The RF indicator will glow to denote RF signal received after turning on the transmitter.
3. The receiver and transmitter must be the same frequency.
4. While using the transmitter, the audio signal indicator will glow to denote audio signal
received.
0
6
9 9
IR RF AF SYNCCHANN EL 1
MIN
MAX
MIN
MAXIR RF AF SYNCCHANNEL 2
NDR-3120
DIVERS ITY RE CEIVER
2
Instructions
Parts and functions
0
6
9 9
IR RF AF SYNCCHANNEL
MIN
MAX
MIN
MAXIR RF AF SYNCCHANNEL
NDR-3120
WIRELESS RECEIVER
PWR
POWER ANT.B SQ B MIC LINE AF OUT B
MIXED
MIC OUT B MIC OUT A AF OUT A
MIXED SEPAR ATE
SQ A ANT.A
OUTPUT
MODE
BALANCED
AF OUT
LEVEL
DC 12V
Channel synchronization button
Audio signal indicator
RF signal indicator
IR sensor LED
Channel scan buttons
CH-A Squelch control
Mixed audio output switch
CH-A
unbalanced audio output
CH-A balanced audio output
CH-B / MIXED balanced audio output
CH-B
/ MIXED
unbalanced audio output
MIC/LINE output impedance switch, only
for unbalanced audio output.
CH-B
Squelch control
DC input
CH-A
CH-B
Antennas (fixed)
CH-A
volume control
Power/
CH-B
volume control
Channel indicator
3
NDR-3120
UHF Dual-Channel Auto Sync Receiver
Function settings on NDR-3120
Adjusting VOLUME level
Volume level can be adjusted by rotating the Power/volume knob.
Scanning & Changing CHANNEL
First turn on main power switch, the two 7-segment display LED will show last stored frequency.
For example, if channel 88 is 630.325MHz, the LED will first display
63
,
03
and
25
in sequence
and return to
88
. Select a channel that corresponds to the transmitter. When transmitter is
turned on, either A or B diversity indicator will light up to indicate that it is connected.
For an interference- free operation, a cleaner channel might be necessary if the current one
receives too much interference. Before scanning, the transmitter must be switched off.
Press ▲or▼and the receiver will scan and stop at the next clean channel.
CHANNEL SYNCHRONIZING of the receiver and transmitter
Align infrared areas of the receiver and transmitter within 10~30cm.
0
6
9 9
IR RF AF S YNCCHAN NEL 1
MIN
MAX
MIN
MAXIR R F AF S YNCCHA NNEL 2
NDR-3120
DIVE RSITY REC EIVER
0
1
IR RF AF SYNCCHANNEL
MIN
MAX
0
1
IR RF AF SYNCCHANNEL
MIN
MAX
0
6
IR RF AF SYNCCHANNEL
MIN
MAX
4
Instructions
Changing the receiver’s channel
Press the sync button on the receiver. The receiver will transmit the frequency to the transmitter
and synchronize the channel.
If it doesn’t work check that you have the IR sensor panels aligned, that they are facing each
other, devices are within 30cm of each other, and try again.
Adjusting SQUELCH level
When interference is encountered try reducing the sensitivity of the receiver by turning the SQ
control clockwise, thus less susceptible to interference. If this still does not solve the problem it
means this frequency is not suitable. Adjust the squelch back to where it was and use the scan
function to locate a clear channel.
0
1
9 9
IR RF AF SYNCCHANNE L 1
MIN
MAX
MIN
MAXIR RF AF SYNCCHANNE L 2
NDR-3120
DIVERSITY RECEIVER
POWER ANT.B SQ B MIC LINE AF OUT B
MIXED
MIC OUT B MIC OUT A AF OUT A
MIXED SEPARATE
SQ A ANT.A
OUTPUT
MODE
BALANCED
AF OUT
LEVEL
DC 12V
5
NDR-3120
UHF Dual-Channel Auto Sync Receiver
Audio output connection
Balanced output: XLR connector provides balanced audio output signal from this jack to the
mixer/amplifier.
Use an audio output cable with “XLR” or “Cannon” connector, connect one
end to the balanced output jack of the receiver, and the other end to the “MIC IN” jack of the
mixer/ amplifier.
①
MIC IN + Separate
②
MIC IN + Mixed
Level ▼
Mode ▼
Level ▼
Mode ▼
MIC
SEPARATE
MIC
MIXED
Unbalanced output: ¼” PHONE PLUG connector provides unbalanced audio output signal
from this jack to the mixer/amplifier.
Use an audio output cable with ¼” PHONE PLUG
connectors. Connect one end from the unbalanced output jack of the receiver, and the other
end to the “LINE IN” or “MIC IN” jack of the mixer/ amplifier.
Level switch setting: When connecting to the LINE /AUX IN of a mixer/amplifier, switch to
“LINE” position. DO NOT use the “MIC” position as they may not deliver a sufficient high
output level. When connecting to the “MIC IN” jack of a mixer/amplifier, switch to “MIC”
position. Overload distortion may occur at the wrong level position.
①
LINE IN + Separate
②
LINE IN + Mixed
③
MIC IN + Separate
④
MIC IN + Mixed
LINE/AUX IN
LINE/AUX IN
MIC IN
MIC IN
Level ▼
Mode ▼
Level ▼
Mode ▼
Level ▼
Mode ▼
Level ▼
Mode ▼
LINE
SEPARATE
LINE
MIXED
MIC
SEPARATE
MIC
MIXED
POW ER AN T.B SQ B MIC LINE AF O UT B
MIXE D
MIC O UT B MIC O UT A AF O UT A
MIXE D S EPAR ATE
SQ A ANT.A
OUTP UT
MOD E
BALA NC ED
AF O UT
LEVE L
DC 1 2V
POW ER AN T.B SQ B MIC LINE AF O UT B
MIXE D
MIC O UT B MIC O UT A AF O UT A
MIXE D S EPAR ATE
SQ A ANT.A
OUTP UT
MOD E
BALA NC ED
AF O UT
LEVE L
DC 1 2V
AF OUT
LEVEL
MIC LINE
OUTPUT
MODE
MIXED SEPARATE
AF OUT
LEVEL
MIC LINE
OUTPUT
MODE
MIXED SEPARATE
POW ER ANT. B S Q B MIC L INE AF O UT B
MIXE D
MIC O UT B M IC O UT A AF O UT A
MIXE D S EPAR ATE
SQ A ANT.A
OUTP UT
MOD E
BALA NC ED
AF O UT
LEVE L
DC 1 2V
POW ER ANT. B S Q B MIC L INE AF O UT B
MIXE D
MIC O UT B M IC O UT A AF O UT A
MIXE D S EPAR ATE
SQ A ANT.A
OUTP UT
MOD E
BALA NC ED
AF O UT
LEVE L
DC 1 2V
POW ER ANT. B S Q B MIC L INE AF O UT B
MIXE D
MIC O UT B M IC O UT A AF O UT A
MIXE D S EPAR ATE
SQ A ANT.A
OUTP UT
MOD E
BALA NC ED
AF O UT
LEVE L
DC 1 2V
POW ER ANT. B S Q B MIC L INE AF O UT B
MIXE D
MIC O UT B M IC O UT A AF O UT A
MIXE D S EPAR ATE
SQ A ANT.A
OUTP UT
MOD E
BALA NC ED
AF O UT
LEVE L
DC 1 2V
MIC LINE
AF OUT
LEVEL
OUTPUT
MODE
MIXED SEPARATE
MIC LINE
AF OUT
LEVEL
OUTPUT
MODE
MIXED SEPARATE
AF OUT
LEVEL
MIC LINE
OUTPUT
MODE
MIXED SEPARATE
AF OUT
LEVEL
MIC LINE
OUTPUT
MODE
MIXED SEPARATE
CHANNEL B only
CHANNEL B only
CHANNEL B only
6
Instructions
Mixed audio output
Either Balanced or unbalanced output socket of CHANNEL B generates mixed output of both
channels. The balanced output socket (XLR) must connect to the balanced input socket of the
mixer. The unbalanced output socket (¼ ”) must connect to the unbalanced input socket.
Receiver installation
For best operation, the receiver should be at least 1m above the
ground and 1m away from a wall or metal surface to minimize
reflections. The transmitter should also be at least 1m away from a wall
or metal surface to minimize reflections. The transmitter should also be
at least 1m away from the receiver. Keep antennas away from noise
source such as motors, automobiles, neon light as well as large metal
objects.
Rack mounting
The slide rail structure on both sides of the receiver is designed to facilitate the user to connect
the two receivers in parallel and quickly install onto the cabinet.
►
Rack mount of two receivers
Rack mount of single receiver
PO WE R ANT.B SQ B M IC L INE A F O UT B
MI XED
MI C O UT B MI C O UT A AF OU T A
MI XED SE PARAT E
SQ A AN T.A
OU TPU T
MO DE
BA LAN CED
AF OU T
LE VEL
DC 12 V
OUTPUT
MODE
MIXED SEPARATE
1m
1m
1m
CHIAYO ELECTRONICS CO.,LTD.
Http://www.chiayo.com.tw
｜
Email: sales@chiayo.com.tw
Office: 30, Lane 27, Section 4, Jen-Ai Road, Taipei 10685, Taiwan
Tel: 886-2-27415741
｜
Fax: 886-2-27525242
Factory: 88, Chung-Hsiao Street 2, Chiayi 60080, Taiwan
Tel: 886-5-2711000
｜
Fax: 886-5-5767611
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Chiayo NDR-3120 is a UHF Dual-Channel Auto Sync Receiver that offers reliable wireless microphone operation for various applications. With its auto-sync feature, you can conveniently synchronize the receiver and transmitter with ease. The receiver boasts adjustable volume control, channel selection, and squelch level adjustment to optimize audio performance. Its balanced and unbalanced audio outputs provide connectivity options for mixers and amplifiers, making it suitable for both professional and personal use.
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