Alpha Communications Duo Com DC-300 Hoja de instrucciones

DC-300

Ticket Window Intercom

Installaon & Conguraon

Manual

Alpha Communicaons®

42 Central Drive

Farmingdale, NY 11735-1202

Phone: 631-777-5500

Fax: 631-777-5599

hp://www.alphacommunicaons.com

AWD282 – Rev 1.0

December 2020

»Get to Know the DC-300

① Operator microphone

② Intercom indicator light

③ 3.5mm headset single jack

④ Operator speaker

⑤ Power ON/OFF switch

⑥ Customer speaker volume adjustment

⑦ Operator speaker volume adjustment

⑧ Power indicator light

⑨ Customer microphone

⑩ Customer speaker

»Included in Package

1 x Operator Intercom

1 x Customer Intercom

1 x DC-300 connecon cable

1 x M3 plum blossom with doed L-shaped wrench

2 x Cable es

1 x Plug-in power supply adapter

1 x Copy of this Instrucon Manual

»Installation

① The operator poron is placed on the workbench while the customer poron is placed at the window, and one end of the

connecng wire with a terminal is inserted into the corresponding interface of the operator board J5. The other end of the cable is

connected to J1 of the customer board. The wiring method is shown on Page 3.

② Connect both ends of the power supply cable to the J2 port of the operator side motherboard (as shown below), and then plug

the power adapter into the power supply. Be sure to observe polarity!!

③ Aer checking that the connecon of each connecon port is correct, turn on the power switch on the operator side, and make

sure the power indicator light is ON.

④ Adjust the volume adjustment knob(s) on the operator unit gradually from low to high to make the internal and external volume

suitable.

⑤ Speak into the microphone on the workbench, the voice is broadcast on the customer poron outside when the operator talks,

the indicator light displays a blue signal. Speak into the customer unit, and the sound will be broadcast to the operator poron of the

system.

⑥ The operator unit or customer unit can output analog audio signals for recording through the RECORD interface.

⑦ You can start a conversaon immediately when you plug in the headset, and you need to wait about 30 seconds to switch the

gooseneck microphone when you unplug the headset.

NOTE: Under normal circumstances, it is not recommended that customers adjust the SIDE MIC ADJUST (R16, R49). If it must

be adjusted due to environmental factors, it should be ne-tuned to avoid self-excitaon or howling or intermient calls due to

excessive adjustment.

»DC-300 Mounting Options & Details

»DC-300 Block Wiring Diagram

»Troubleshooting

The system is completely silent

① Check whether the power supply is properly connected (with polarity observed) and whether the power indicator is ON;

② Check whether the internal and external unit cables are connected rmly and correctly;

③ Check whether the volume adjustment is adjusted to the o state or the volume is set too low;

④ NOTE: It takes 30s to wait for the switch from low to loud when the headset is just unplugged.

The system is howling / feedback

① Need to be installed in a certain soundproof environment, otherwise it will cause sound return amplicaon (howling);

② The distance between two or more intercom devices is too small.

③ Volume sengs are too high.

Customer can not hear the Operator

① The Operator is too far from the microphone;

② Try turning up the ”TALK” knob;

③ Try adjusng the compensaon “INSIDE MIC ADJUST”.

Operator can not hear Customer

① The Customer is too far from the microphone;

② Try turning up the ”LISTEN” knob;

③ Try adjusng the compensaon “OUTSIDE MIC ADJUST”.

Communicaon is broken up or choppy

① Either the Customer or Operator is too far away from the microphone;

② The ambient noise is too loud, causing frequent switching of calls and causing interrupons.

③ If you turn the volume to the maximum when you use the headset, turn the volume back to a low level when you

unplug the headset or wait for about 15 seconds before returning to normal

»Specications

Input Voltage AC100~240, 50/60Hz

Output Voltage DC12V

Output Current 1000mA

Operang Voltage DC12V

Consumpon ≤3.8W

Sta Microphone 36~38db, 20Hz-20000Hz

Customer Mic. -56db, 20Hz-16000Hz

Operang Temp -13~122°F (-25~50°C)

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