CHIAYO IrDA-9000 UHF 1-2 19 Inch Single-Channel 2-Way Sync True Diversity Wireless Microphone System User Manual

June 3, 2024
CHIAYO

IrDA-9000 UHF 1-2 19 Inch Single-Channel 2-Way Sync True
Diversity Wireless Microphone System

User Manual
CHIAYO ELECTRONICS CO., LTD.

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

CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto Sync Diversity Receiver -
Figure 1

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.

Parts and functions

CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto Sync Diversity Receiver -
Figure 2CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto Sync
Diversity Receiver - Figure 3

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. CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto Sync Diversity Receiver -
Figure 5

CHANNEL SYNCHRONIZING of the receiver and transmitter Align infrared areas of the receiver and transmitter within 10~30cm. CHIAYO NDR-3120 UHF 1-2 19
Inch Dual-Channel Auto Sync Diversity Receiver - Figure
6

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. CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto
Sync Diversity Receiver - Figure 8

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.
    CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto Sync Diversity Receiver -
Figure 9

  • 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.
    CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto Sync Diversity Receiver -
Figure 10

  • 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.

CHIAYO NDR-3120 UHF 1-2 19 Inch Dual-Channel Auto Sync Diversity Receiver -
Figure 13

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 12I1397

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