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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

SYNC

CHANNEL 1

MIN

MAX

MIN

MAX

IR

RF

AF

SYNC

CHANNEL 2

NDR-3120

DIVERSITY RECEIVER

P O W E R

A N T.B

S Q B

M IC LIN E

A F O U T B

M IX E D

M IC O U T B

M IC O U T A

A F O U T A

M IX E D S E PA R AT E

S Q A

A N T.A

O U TP U T

M O D E

B A L A N C E D

A F O U T

L E V E L

D C 12V

Summary of Contents for NDR-3120

Page 1: ...CHIAYO ELECTRONICS CO LTD Operation manual NDR 3120 UHF Dual Channel Auto Sync Receiver 0 6 9 9 IR RF AF SYNC CHANNEL MIN MAX MIN MAX IR RF AF SYNC CHANNEL NDR 3120 WIRELESS RECEIVER PWR ...

Page 2: ...n 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 trans...

Page 3: ...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 f...

Page 4: ...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 ...

Page 5: ...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 SYNC CHANNEL 1 MIN MAX MIN MAX IR RF AF SYNC CHANNEL 2 NDR 3120...

Page 6: ...IC 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 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 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 O...

Page 7: ...ould 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 ...

Page 8: ...p 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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