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3

 

 
 
 
 
 

6.  

MAINTENANCE .................................................................................................... 17

 

6-1. 

Cleaning………………………………………………………………………………….17 

6-2. Fuses 

Replacement………………………………………………………………………17 

6-3. 

Tube 

Replacement……………………………………………………………………….17 

6-4. 

The 

ACOM1500 

Simplified 

Schematic 

Diagram…………………………………………17 

6-5. 

Troubleshooting……………………………………………………………………..…..18 

 

7. 

SPECIFICATIONS……………………………………………………………………..20 

7-1. 

Parameters………………………………………………………………………………..20 

7-2. 

Functions………………………………………………………………………………….20 

7-3.Storage 

and 

Shipment……………………………………………………………………..21 

NOTE 

This unit has been set for 240VAC at the factory. Means is provided, however, to 
reconnect it for 200/240VAC, as well as for 100/120VAC, in 10-Volt steps. 

Please contact your dealer or look at the enclosed schematic diagram whenever a 
change is needed. 
 
 
 
 
 
 
 

Содержание 1500

Страница 1: ...ser s Manual External Radio Frequency Power Amplifier ACOM 1500 Model 1500 Array Solutions 2611 North Beltline Rd Suite 109 Sunnyvale Texas 75182 USA Tel 214 954 7140 fax 214 954 7142 E mail info arraysolutions com ...

Страница 2: ...ocation Selection 6 2 4 Connections 7 2 5 Installation of External Fan 8 3 POWER ON CONTROLS AND INDICATORS 9 4 OPERATION 11 4 1 Turning ON and OFF 11 4 2 Changing Operate and Standby Modes 11 4 3 Antenna charge 12 4 4 Tuning 12 4 5 ON LINE Information Screens and Control Functions 14 4 6 Auto Protection System 15 5 OFF LINE OPERATION 16 5 1 Display brightness control 16 5 2 Auto Operate enabling ...

Страница 3: ...shooting 18 7 SPECIFICATIONS 20 7 1 Parameters 20 7 2 Functions 20 7 3 Storage and Shipment 21 NOTE This unit has been set for 240VAC at the factory Means is provided however to reconnect it for 200 240VAC as well as for 100 120VAC in 10 Volt steps Please contact your dealer or look at the enclosed schematic diagram whenever a change is needed ...

Страница 4: ...4 ...

Страница 5: ...bled maintains the amplifier in OPERATE mode for you thus saving manual operations and time No heavy outboard antenna tuners required for antenna VSWR up to 3 1 and higher on some bands Your amplifier will perform the functions of an antenna tuner thus enabling you to change antennas faster and use them over a wider frequency range saving tuning time An amplifier that is both user friendly and tha...

Страница 6: ...lector and tuner against severe damage in case of possible break down High voltage power supply inrush current protection which eliminates the danger of affecting sensitive devices connected to the same mains circuit important when used portable The amplifier can be configured for 8 nominal line voltages 100 110 120 200 210 220 230 and 240VAC 50 or 60Hz Continuous monitoring and or selectable meas...

Страница 7: ...g into holes in the case this will cause electric shock NEVER TOUCH AN ANTENNA during transmission this may result in an electric shock or burn NEVER EXPOSE the amplifier to rain snow or any liquids AVOID placing the amplifier in excessively dusty environments or in direct sunlight DO NOT OBSTRUCT AIR INTAKE rear panel and EXHAUST top cover areas of the amplifier Keep a minimum distance of 10cm 4 ...

Страница 8: ...r for instructions on how to change the voltage selector inside the amplifier The only exception to this is if the unit has been custom ordered in which case the voltage selection will be noted in the Table of Individual Data Table 2 1 below Voltage Selector Tube s n VAC AMPs n Table 2 1 ACOM 1500 Individual Data C A U T I O N The current consumed by the amplifier from the line mains supply should...

Страница 9: ...te that the grounding system may have to withstand currents over 20A with insignificant voltage drop on it Therefore it may be necessary to improve it considerably i e to become less resistive with heavier leads and lower resistive ground path The grounding leads should be at least 8mm2 AWG 8 or SWG 10 Fig 2 1 Connections a First connect the ground stud of the amplifier on the rear panel marked GN...

Страница 10: ...let for the amplifier W A R N I N G If your amplifier is only fitted with one line mains fuse it is suitable for the European Union ONLY Your dealer will check that your amplifier is correctly fused before it is shipped to you based upon your indicated location Customers should check with a qualified electrician if the amplifier is to be used outside the country in which it was purchased Due to th...

Страница 11: ...amplifier on for at least 2 hours after unpacking it in the room where it will be used Pay particular attention when you move it from a very cold into a warm place condensation is likely and this could result in damage to the high voltage circuits In such a case wait at least 4 hours A similar effect can occur after a rapid warming of the operating room for instance after switching on a powerful h...

Страница 12: ...ed off the tube is not powered at all The control of the amplifier is accessible during OFF LINE and ON LINE states each having several information screens and control functions see Fig 3 2 Fig 3 2 Information Screens and Control Functions Structure The OPER button changes operate and standby modes alternatively S 4 2 while ON LINE Please note that Auto Operate might be enabled The same button act...

Страница 13: ...h can be selected by pressing repeatedly the NEXT or PREV buttons see fig 3 2 Their purpose and method of use are described in the next five sections 4 1 through 4 6 4 1 Turning ON and OFF In order to turn on the amplifier while the Main Power Switch located on the rear panel is on press the red ON OFF button located under the red LED on the front panel right bottom corner and hold it on for about...

Страница 14: ...ong time it is best to turn it off using the Main Power Switch on the rear panel as well 4 2 Changing Operate and Standby Modes With the Auto Operate function disabled see S 5 2 the OPER button changes two modes alternatively When Auto Operate is enabled the amplifier will be maintained to operate mode by default unless you use the OPER button manually to go to standby then Auto Operate is suppres...

Страница 15: ...igher VSWR The maximum usable forward power at VSWR 3 1 is 1200W with 300W reflected For higher than 300W reflected power you ll get the REFLECTED POWER soft fault protection trip For instance this can happen at full scale I500W forward and 375W reflected power into an antenna having a VSWR of 3 1 or worse C A U T I O N Using a feeder of coaxial cable at VSWR 3 1 on HF and particularly on the and ...

Страница 16: ... By pressing repeatedly either PREV or NEXT button whichever is nearest until you reach the TRI scale This will not insert the attenuator so you ll have to use less than 20W drive unless the amplifier is near correct tuning otherwise the next step would be executed automatically By simply applying a normal working 60 85W drive power while the amplifier is not yet tuned This will automatically invo...

Страница 17: ...e You may prefer to use this hint when your drive power is insufficient or when you need less output but better efficiency for instance at heavy duty modes RTTY SSTV etc where less heat is wanted not only in the amplifier but also in the transceiver Tuning to the left of the center would lead to the opposite less gain and more power attainable Of course this requires more drive power more plate cu...

Страница 18: ...ch conditions but you are close to a trip threshold b The second degree of protection is a trip in standby mode Soft Fault You ll get an appropriate message for instance GRID CURRENT All Soft Fault messages are marked with two asterisks on both screen edges The message remains on the display until you press any button or auto operate function returns to operate mode automatically The Soft Faults a...

Страница 19: ...e feature The Auto Operate screen will appear on the bottom line Use the PREV button to select OFF or the button NEXT to select ON Press shortly the PREV NEXT buttons again in order to reach the last control function the antenna outputs assignment see the next S 5 3 Alternatively you may leave the buttons unused for 20 seconds if you want to exit this menu without exciting it In any case the selec...

Страница 20: ... the amplifier paint or plastics Do not open the amplifier Cleaning of the amplifier outer surface can be done with a piece of soft cotton cloth lightly moistened with clean water 6 2 Fuses Replacement If it is necessary to replace the mains fuses use only standard ones The two Primary Mains Fuses of the amplifier are located on the rear panel Fig 2 I They are of the fast quick blow type 1 1 4 x 1...

Страница 21: ...I wattmeter current transformer TAI and a high pass filter RFCasw Casw for frequencies below I00kHz to the antenna switch and the three outputs The chokes RFC3 and RFCasw keep track of the antenna relay contact conditions and together with Casw prevent the plate supply from reaching the antenna RFCasw shunts the high voltage to ground should the DC blocking capacitor Cb3 fail The resistor Rasw pro...

Страница 22: ...chematic diagram and signal type 1 peak forward power pfwd analogue 2 reflected power rfl analogue 3 input drive power inp analogue 4 peak anode alternate voltage paav analogue 5 screen grid current g2c analogue 6 plate current ipm analogue 7 high voltage hvm analogue 8 exhaust air temperature temp analogue 9 drive power exists GRIDRF logic A antenna power exists PANT logic B output relay closed O...

Страница 23: ...minutes up to several hours depending on ambient temperature the external auxiliary fan must be installed c Intermodulation Distortion Better than 35dB below PEP rated output d Hum and noise Better than 40dB below rated output e Harmonic Output Suppression I 8 29 7MHz better than 50dB below rated output 50 54MHz better than 66dB below rated output f Input and Output Impedances Nominal value 50 Ohm...

Страница 24: ...utton on the front panel c T R System QSK operation with built in vacuum RF antenna relay special quiet installation d Protections Cover interlock for operator s safety Inrush power on current control High voltage control grid screen grid and plate currents Exhaust air temperature T R sequencing Antenna relay contacts including RF power induced in antenna from another nearby transmitter Antenna ma...

Страница 25: ...rom the rear panel of the amplifier remove the ground connection the last Finally pack the amplifier in its original carton a Storage environments the amplifier can be kept packed in dry and ventilated unheated premises without chemically active substances acids alkalis etc in the following climatic environment Temperature range 40 to 70 degs Celsius Humidity up to 75 35 degs Celsius b Shipping Si...

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