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User's Manual | ACOM 2S1 | Automatic XCVR Commutator  

Page  2 of 32  |  S e c t i o n   ABOUT DOCUMENTATION 

June 2022 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

This manual is for electronic distribution mainly. 

If you have it on paper and you no longer need it, please, recycle it! 

 
 

The latest versions of our User's Manuals are available at 

www.acom-bg.com 

 
 
 
 

Summary of Contents for 2S1

Page 1: ...ACOM 2S1 Automatic XCVR Commutator User s Manual Installation Operation and Maintenance June 2022 OUTSTANDING HF POWER PRODUCTS ...

Page 2: ... Page 2 of 32 S e c t i o n ABOUT DOCUMENTATION June 2022 This manual is for electronic distribution mainly If you have it on paper and you no longer need it please recycle it The latest versions of our User s Manuals are available at www acom bg com ...

Page 3: ...s which thereby become invalid The cover images used in the manual are illustrative only We are continuously striving to improve our documentation but nobody is perfect And our documentation is not an exception of this rule Have you found any errors or would you like to suggest changes in our documentation Please help us by sending your suggestions to the following e mail address documentation aco...

Page 4: ...onfirmed in the contract All rights are reserved with respect to the content of this manual and the availability of the product Copyrights 2022 ACOM Ltd Copying this document giving it to others and the use or communication of the contents thereof without express authority are forbidden Offenders will be held liable for infringement of any intellectual property of ACOM Ltd and all damages which ma...

Page 5: ...2 1 Unpacking and Initial Inspection 14 2 2 Commutator Location Selection 14 2 3 Connections 14 3 INITIAL CHECK AND OPERATION 19 4 MAINTENANCE 21 4 1 Periodic Maintenance 21 4 2 Cleaning 21 4 3 Schematic Diagram 21 4 4 Troubleshooting 24 5 SPECIFICATIONS 25 5 1 Parameters 25 5 2 Functions 25 5 3 Regulatory Requirements 26 5 4 Storage and Shipment 26 5 4 1 Storage Environment 26 5 4 2 Shipping Size...

Page 6: ...2 1 Rear panel Connections 14 Figure 2 2 Control cables YAESU FT 990 and FT 1000MP transceivers 15 Figure 3 1 Front panel Indicators 19 Figure 4 1 Schematic diagram Part 1 22 Figure 4 2 Schematic diagram Part 2 23 Tables Table 1 1 Production versions history 8 Table 1 2 Package contents 9 Table 2 1 Control cable wiring for YAESU FT 990 and FT 1000MP transceivers 16 Table 2 2 Signals and pin out of...

Page 7: ...ns Installation Operation and Maintenance of the ACOM 2S1 Automatic XCVR commutator The ACOM 2S1 is a TX RX commutator that allows two transceivers to use a common load It guards each transceiver s input while the other transceiver transmits prevents simultaneous transmission and allows simultaneous reception ACOM 2S1 commutator is especially designed to complete the ACOM 2000S SW ACOM 2000S autom...

Page 8: ...scribes the operating possibilities of all commutators produced till the publishing date of this manual This manual is valid till a new manual is issued Table 1 1 Production versions history Production Version Release Date Notes 11 1999 Basic design metal outside box in RAL 8019 color 04 2022 New metal outside box in black color No functional changes Table 1 1 Production versions history Figure 1 ...

Page 9: ... ACOM 2S1 automatic XCVR commutator is shipped in a cardboard carton The ACOM 2S1 is shipped as package consisting of Table 1 2 Package contents Nr PACKAGE CONTENTS Pcs 1 ACOM 2S1 1 2 Control cables 3 m 2 Table 1 2 Package contents The User s Manual is available as PDF file only The latest version of the User s Manual is available at www acom bg com NOTICE Control cables are directly suited for YA...

Page 10: ...e The ACOM 2S1 may be used to commutate an antenna only or can be adapted in other systems too ACOM 2S1 is especially designed to complete the ACOM 2000S automatic antenna selector and ACOM 2000SW remote antenna switch and the ACOM 2000A automatic HF linear amplifier Integrated power supply There is no need of external power supply device The ACOM 2S1 uses power supply directly from the transceive...

Page 11: ...nd instructions related to hazards that should be followed by the user in order to ensure safe operation and to keep the device in a safe working condition at all times The EXPLICIT DEFINITIONS described below apply to this User s Manual DANGER These notes call attention to a procedure or instructions which if not correctly performed will result in serious personal injuries and even death WARNING ...

Page 12: ...at may improve equipment reliability and or personnel performance or to emphasize a concept ORANGE TEXT as LINKS marks all internal links in the document between Sections Figures Tables etc for your convenience The safety instructions contained in this User s Manual feature specific signal words Danger Warning Caution or Notice and where required a safety alert symbol in accordance with actual sta...

Page 13: ...ed with it not covered by warranty The manufacturer is not liable for another s actions and responsibility shall be assumed by the doer WARNING To avoid damage not covered under warranty read the Section 2 INSTALLATION of this User s Manual carefully If you have any doubts about the installation or safety of the device please consult your dealer NOTICE Some types of transceivers are not suitable t...

Page 14: ...vident notify your dealer immediately Delay may void the carrier s warranty Keep all packing materials for possible future commutator shipment see Section 5 4 4 Returning to the Service Provider 2 2 Commutator Location Selection Position the commutator near your transceivers or power amplifiers You will need an easy access to the LED indicators on the front panel as well as to the rear panel cabli...

Page 15: ...ifier s input or antenna switch or to the antenna directly whichever is used Please see Figure 2 1 Rear panel Connections Pos c d CONTROL A and CONTROL B connectors If you use YAESU FT 990 and or FT 1000MP transceivers please follow instruction below NOTICE Delivered control cables are directly suited for BAND DATA connectors of YAESU FT 990 and FT 1000MP transceivers Using an inappropriate cable ...

Page 16: ... view 2 TX GND 2 2 2 TX GND OUT 3 GND Shield 3 3 3 GND 4 TXINHIBIT 4 8 4 Band A OUT Housing Not connected 4 5 Band B OUT Not connected 5 6 Band C OUT Not connected 6 7 Band D OUT Not connected 7 8 LINEAR Housing Cable shield Housing Housing Table 2 1 Control cable wiring for YAESU FT 990 and FT 1000MP transceivers NOTICE Designation MIC type is used for a circle 4 pin connector type and does not m...

Page 17: ... to the transceiver s output providing ground on transmit it s usually dedicated for external amplifier T R control Prefer an electronic output to a relay contact Transceiver producers give different names to this signal for instance TX GND SEND T R LINE etc Some transceivers require that ground on transmit is implemented via a software command or by changing the setting of a switch on the rear pa...

Page 18: ...careful not to mix A and B control and RF cable pairs Damage to the commutator and or other equipment is possible not covered by the warranty e KEY OUT and KEY IN connectors Run a daisy chain wiring using Phono RCA connector terminated cables From the commutator s KEY OUT connector see Figure 2 1 Rear panel Connections Pos e to the amplifier KEY IN connector From the amplifier KEY OUT connector to...

Page 19: ... below 1 Transceivers Power On After following all instructions in Section 2 3 Connections you can turn ON both transceivers This will apply DC voltage to the commutator Powering sequence makes no difference Both LED indicators A and B see Figure 3 1 Front panel Indicators on commutator s front panel must be OFF in RX mode LED indicators A or B light only while the respective transceiver transmits...

Page 20: ...ssion Try the same as described in Point 3 above but with B and A exchanged 5 Repeat instructions in Points 3 and 4 above at a low 5 10 Watts output level Try QSK CW from both transceivers a first pressed KEY must reject CW dots and dashes of the second one The second transceiver must be automatically enabled when the first one returns to RX Both transceivers must be able to receive in the pauses ...

Page 21: ...s GA and GB are used by the logic to disable transmission while the opposite antenna input is not yet grounded Two other signals PA and PB disable transmission if no RF input is connected to the output The transmission requests TXA or TXB are controlled via a trigger logic composed by U3B U3C U4A and U4B It judges which request is earlier and disables the other until the first one finishes transmi...

Page 22: ...User s Manual ACOM 2S1 Automatic XCVR Commutator Page 22 of 32 S e c t i o n MAINTENANCE June 2022 Figure 4 1 Schematic diagram Part 1 Figure 4 1 Schematic diagram Part 1 ...

Page 23: ...User s Manual ACOM 2S1 Automatic XCVR Commutator June 2022 S e c t i o n MAINTENANCE Page 23 of 32 Figure 4 2 Schematic diagram Part 2 Figure 4 2 Schematic diagram Part 2 ...

Page 24: ...se inspect all cabling according to Section 2 3 Connections Clean all connectors with alcohol as needed and check the cables for continuity or parasitic connections Make an initial operational check according to Section 3 INITIAL CHECK AND OPERATION If the problem persists you will need to contact your dealer see Section 1 3 Owner Assistance ...

Page 25: ...s with CE safety and electromagnetic compatibility requirements as well as with the US Federal Communications Commission FCC regulations f Size Weight operating excluding connected cables WxDxH 110x42x67 mm 0 25 kg 4 4x1 7x2 7 inches 0 56 lbs g Operating Environments Temperature range 0 to 50 degrees Celsius 32 o F to 122 o F Relative air humidity up to 95 35 degrees Celsius 95 o F Height up to 30...

Page 26: ... with no chemically active substances such as acids or alkalis within the following environment ranges Temperature range 40 to 70 degrees Celsius 40 o F to 158 o F Humidity up to 75 35 degrees Celsius 95 o F 5 4 2 Shipping Size and Weight WxDxH Approx 200x150x70 mm 0 45 kg 7 9x5 9x2 8 inches 1 0 lbs Please contact ACOM see 1 3 Owner Assistance for shipment details 5 4 3 Transportation All types of...

Page 27: ...r shipping as described below Switch off your transceivers Disconnect KEY OUT and KEY IN cables Disconnect CONTROL A and CONTROL B cables Disconnect OUTPUT cable Disconnect INPUT A and INPUT B cables Pack the commutator and CONTROL A CONTROL B cables in its original cardboard carton see Section 2 1 Unpacking and Initial Inspection Seal the commutator cardboard carton with self adhesive tape Now th...

Page 28: ... should not place the electrical item in the general waste Waste electricals This symbol three green arrows going in a triangle with electrical plug in the center means that according to local laws and regulations this product should be sent for recycling Old electrical and electronic equipment and batteries should be recycled at a facility capable of handling these items and their waste byproduct...

Page 29: ...User s Manual ACOM 2S1 Automatic XCVR Commutator June 2022 S e c t i o n NOTES Page 29 of 32 NOTES ...

Page 30: ...User s Manual ACOM 2S1 Automatic XCVR Commutator Page 30 of 32 S e c t i o n NOTES June 2022 ...

Page 31: ...utator June 2022 S e c t i o n NOTES Page 31 of 32 This manual is for electronic distribution mainly If you have it on paper and you no longer need it please recycle it The latest versions of our User s Manuals are available at www acom bg com ...

Page 32: ... The used images are illustrative only Subject to change without notice I Printed in Bulgaria All rights reserved I Design and content by ACOM Ltd ACOM 2S1 User s Manual I Second Edition Revision 01 I June 2022 ACOM Ltd Bulgaria Bozhurishte 2227 Sofia Bozhurishte Industrial Park 6 Valeri Petrov Str GPS coordinates 42 748616о 23 209801о support acom bg com ...

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