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Amron 2820A, User Manual

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User Manual 

For 

Amron International, Inc.  

 

Model 2820A-XX & 2825A-XX Series 
Portable Two Diver Communicators 

 

S/N ____________________ 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

1380 Aspen Way, Vista California 92081-8349 

United States of America 

Phone: (760) 208-6500 

Fax (760) 599-3857 

Email: 

[email protected]

 

Web: 

www.amronintl.com

 

 
 

This manual and the information contained herein are provided for use as an operation and maintenance 
guide.  No license or rights to manufacture, reproduce, or sell either the manual or articles described 
herein are given. Amron International, Inc. reserves the right to change specifications without notice.  

 

Copyright© 2020 Amron International, Inc. 

Summary of Contents for 2820A

Page 1: ...6500 Fax 760 599 3857 Email sales amronintl com Web www amronintl com This manual and the information contained herein are provided for use as an operation and maintenance guide No license or rights t...

Page 2: ......

Page 3: ...DRAWING OPERATOR CONNECTIONS HEADSET 14 4 OPERATION 15 4 1 BATTERY CHARGING 15 4 2 BATTERY CONDITION 16 4 3 BATTERY INSTALLATION 16 4 4 MODES OF OPERATION 16 4 5 VOLUME CONTROLS 2 WIRE 18 4 6 VOLUME C...

Page 4: ...35 7 3 PARTS LIST MODEL 2825A 11 WEATHER RESISTANT AC POWER MODULE 35 7 4 PARTS LIST MODEL 2825A 12 WEATHER RESISTANT AC POWER MODULE DSP3 HELIUM UNSCRAMBLER OPTION 35 7 5 PARTS LIST MODEL 2825A 13 W...

Page 5: ...or an external 12 VDC power source All communicators are supplied with an outdoor weather resistant AC power entry module located on the case and country specific locking AC power cord of your choice...

Page 6: ...der Coated Enclosure High Impact UV Resistant Plastic Enclosure Color Bright International Yellow Length 14 5 In 36 8 Cm Width 9 0 In 22 9 Cm Height 10 0 In 25 4 Cm Model 2820A 11 with AC Power Module...

Page 7: ...ote wireless tender headset remote ultra light headset and carrying case The wireless tender option allows the tender freedom to move around up to 200 feet from the communicator The wireless tender op...

Page 8: ...irectly to the communicator 2 2 6 Item No 2490SM 28 NOISE REDUCTION HEADSET Single Ear Muff The Model 2490SM 28 Active Noise Reduction ANR headset isolates and reduces topside noise in loud environmen...

Page 9: ...WIRELESS TENDER HEADSET Dual Ear Muffs Dual ear muffs headset that is compatible with the 28B Wireless Tender option Additional headsets can be ordered to allow other crew members supervisors crane o...

Page 10: ...ommunications and possibly damage the microphone 3 1 10 TENDER HEADSET JACKS BLACK are dual banana jacks color coded black that functions as both an output earphone and input microphone for the tender...

Page 11: ...no chance of acoustic feedback since the PANEL SPEAKER is cut off when the tender uses the microphone When using the Push to Talk Microphone the SPEAKER SWITCH must be turned on in order to hear the...

Page 12: ...er This allows the tender to adjust the optimum microphone volume level for each individual diver 3 2 2 DIVER PUSH TO TALK SWITCH provided for each diver and used only in the 2 Wire Mode This function...

Page 13: ...ry 3 3 2 TREBLE BOOST Selects the amount of gain added to the High Frequency HF portion of the divers microphone signals This compensates for the HF drop off in the sensitivity of most microphones The...

Page 14: ...he volume level by rotating the knob in either direction 3 4 2 BASE STATION CHANNELS 1 2 programming buttons are located on the rear side of the base station Up to 3 remote headsets can be programed p...

Page 15: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 11 3 5 DRAWING 2 WIRE CONNECTIONS...

Page 16: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 12 3 6 DRAWING FULL DUPLEX 4 WIRE CONNECTIONS...

Page 17: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 13 3 7 DRAWING OPERATOR CONNECTIONS HAND HELD MICROPHONE...

Page 18: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 14 3 8 DRAWING OPERATOR CONNECTIONS HEADSET...

Page 19: ...e the battery after use simply connect power cord to an AC outlet rated from 90 264 VAC 50 60 Hz The charger will automatically adjust to the input voltage 4 1 2 The unit should be placed on charge an...

Page 20: ...sis Lift out radio using the handles and set it on its right side side away from speaker The 12V battery is now accessible Lift out battery and remove color coded slide terminals Install the battery a...

Page 21: ...post or firmly wrap the wire around the shaft Tighten the nut until the bare wire is firmly fastened by the nut The nut should not be fastened on the insulation of the wire nor should any of the bare...

Page 22: ...less Tender Option NOTE Acoustic feedback may occur when operating with a standby diver who does not have his hat helmet on This can be avoided by turning his DIVER MICROPHONE VOLUME control down This...

Page 23: ...algorithm which filters out background noise while allowing the diver s speech to be clear and intelligible Amron NRF automatically captures the frequency spectrum of applied background noise within t...

Page 24: ...features two key technologies unmatched active noise reduction and unique dynamic noise cancelling microphone The proprietary electronic circuitry design shapes and equalizes incoming audio signals t...

Page 25: ...an RF signal to the communicator then sends the signal down the umbilical to the diver 4 9 4 When the diver speaks the signal is sent up the umbilical to the communicator and then transmitted as an RF...

Page 26: ...This indicates that the base station is ready to link to a Remote Headset 4 11 5 Press the Power button on the Remote Headset and release The Power button should be flashing blue and ready to be prog...

Page 27: ...into the microphone You should be able to hear yourself in the headset Adjust the DIVER TO TENDER VOLUME control and verify the level can be adjusted to a comfortable level 7 Move the headset microph...

Page 28: ...urself in the headset Remove the short Turn off the SPEAKER SWITCH 9 Move the microphone lead to the DIVER MICROPHONE red jack and move the headset lead to the TENDER HEADSET jack 10 Talk into the mic...

Page 29: ...panel or connectors using a clean damp cloth Pay particular attention to where the various front panel components attach to the panel Inspect the outer case for any damage Inspect the PUSH TO TALK BU...

Page 30: ...ION The BATTERY CONDITION INDICATOR indicates the battery level or state of charge by monitoring the battery voltage The battery voltage can be measured independently using a Voltmeter by measuring th...

Page 31: ...SH TO TALK BUTTON and talking into the PANEL SPEAKER If this solves the problem then the tender headset may be wet or defective If the tender is using the PANEL SPEAKER to talk to the diver check the...

Page 32: ...etermine the source of the acoustic feedback is to cover each active microphone with your hand one at a time Another method is to adjust the volume controls one at a time The volume control that stops...

Page 33: ...he tender is using the PANEL SPEAKER as the microphone with the PUSH TO TALK BUTTON make sure the SPEAKER SWITCH is turned on If neither of these solves the problem there could be a broken wire inside...

Page 34: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 30 6 1 PARTS IDENTIFIER MODEL 2820A 11 WEATHER RESISTANT AC POWER MODULE...

Page 35: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 31 6 2 PARTS IDENTIFIER MODEL 2825A 11 WEATHER RESISTANT AC POWER MODULE...

Page 36: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 32 6 3 PARTS IDENTIFIER MODEL 2825A 12 WEATHER RESISTANT AC POWER MODULE DSP3 HELIUM SPEECH UNSCRAMBLER...

Page 37: ...2820A XX 2825A XX SERIES TWO DIVER COMMUNICATOR USER MANUAL 282XA UM REV 5 0 33 6 4 PARTS IDENTIFIER MODEL 2825A 13 WEATHER RESISTANT AC POWER MODULE 28B WIRELESS TENDER...

Page 38: ...erial number Failure to provide sufficient information may hinder our ability to fill your parts orders promptly and correctly 7 1 PARTS LIST FOR 282XA XX SERIES FRONT PANEL ASSEMBLIES REF PART NO DES...

Page 39: ...DULE PART NO DESCRIPTION 570 1008 20 2 DV AMPLIFIER PC CARD DELUXE 2820 302 CASE ASSEMBLY WITH POWER MODULE 2825A 400 FRONT PANEL ASSEMBLY 2824 502 CHASSIS ASSEMBLY 2405 28 HAND HELD MICROPHONE PUSH T...

Page 40: ...2820A 01 2825A SERIES 7 6 PARTS LIST 2820 302 CASE ASSEMBLY WITH POWER ENTRY MODULE PART NO DESCRIPTION 2820 3006 LID GASKET 3 FT REQUIRED 2820 3031 PANEL GASKET 160 0500 01 POWER ENTRY MODULE WEATHER...

Page 41: ...82XA UM REV 5 0 37 PART NO DESCRIPTION QTY FOR 570 1008 XX AMPLIFIER CARD LEDHOLDER BLK 25 MOUNTING CLIP FOR 5MM LED 2 LT2462 24 D51 LED BI COLOR RED GREEN 2 LEDGREEN LED GREEN BRITE 2 130 1002 01 FUS...

Page 42: ...se negligence accident repair or alterations SERVICE POLICY For technical assistance or to request a repair please complete one of the following Amron Communicator Repair https www amronintl com commu...

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