Acom 1500 User Manual
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Acom 1500 User Manual

External radio frequency power amplifier
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Exhibit 6: User'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
info@arraysolutions.com
E-mail:
1

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  • Page 1 Exhibit 6: User’s Manual External Radio Frequency Power Amplifier ACOM 1500 Model 1500 Array Solutions 2611 North Beltline Rd Suite 109 Sunnyvale, Texas 75182 Tel: 214 954 7140 fax: 214 954 7142 info@arraysolutions.com E-mail:...

  • Page 2: Table Of Contents

    Table of Contents 1. GENERAL INFORMATION ..............…3 1-1. Introduction and Description ..............3 1-2. Owner Assistance ................. 3 1-3. Equipment Supplied ................3 1-4. Features ....................3 1-5.Safety Considerations, Explicit Definitions ..........4 2. INSTALLATION ..................6 2-1.Unpacking and Initial Inspection ............6 2-2.
  • Page 3 6. MAINTENANCE ....................17 6-1. Cleaning………………………………………………………………………………….17 6-2. Fuses Replacement………………………………………………………………………17 6-3. Tube Replacement……………………………………………………………………….17 6-4. ACOM1500 Simplified Schematic Diagram…………………………………………17 6-5. Troubleshooting……………………………………………………………………..…..18 SPECIFICATIONS……………………………………………………………………..20 7-1. Parameters………………………………………………………………………………..20 7-2. Functions………………………………………………………………………………….20 7-3.Storage 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.

  • Page 5: General Information

    ACOM's specialists, the contact information is as follows: fax + 359 2 920 96 56, tel. + 359 2 920 96 55, e-mail acom@mail.orbitel.bg or by mail: bul. Nikola Mushanov Nr.151, 1330 Sofia, Bulgaria.

  • Page 6: 1-5.Safety Considerations, Explicit Definitions

    Using an EXCEL APPLICATION (available from ACOM or your dealer free of charge) and a PC you can decode the signatures by yourself, too. Less noise in the shack: the input bypassing and the vacuum antenna relays are virtually •...
  • Page 7 W A R N I N G notes call attention to a procedure which, if not correctly performed, could result in personal injury, fire hazard or electric shock. C A U T I O N notes call attention to a procedure which, if not correctly performed, could result in equipment damage, not only in the amplifier.

  • Page 8: Installation

    AMP s/n Tube s/n Voltage Selector 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 not exceed 16A from 200/240VAC and 20A from 100/120VAC.

  • Page 9: Connections

    No magnetic-field sensitive devices should be located next to the right side of the amplifier as its power transformer is located there. It's best to position it to the right of your transceiver. No temperature sensitive devices should be located above the exhaust hot air area, so don't push it under a shelf.
  • Page 10 c) Connect a suitable coaxial cable from your antennas to the appropriate amplifier output on the rear panel, marked ANTENNA 1, ANTENNA 2, and ANTENNA 3, using PL-259 plugs with PTFE insulation. d) Run a cable terminated in a Phono (RCA) connector from the transceiver socket providing "ground on transmit"...

  • Page 11: Installation Of External Fan

    Make sure the main Power Switch on the rear panel is in OFF position and insert amplifier's mains plug into the wall outlet prepared for it. The amplifier remains switched off. 2-5. Installation of External Fan This fan (Fig. 2-1) is not necessary in SSB and CW modes, nor in continuous carrier modes (RTTY, SSTV etc.) with carrier down times of maximum 15 minutes and a subsequent pause of 3 minutes.
  • Page 12 Fig.3-1 ACOM1500 Display and Control You'll note that the upper line of the LCD always reads the peak forward power, even in STBY mode. The 1500W scale resolution is 15W per bar. Note that levels below 20W may be not detected.

  • Page 13: Operation

    a) You can use the OFF LINE information screens and control functions. They refer to the auto-protection signatures list, Display brightness control, as well as the Auto-Operate feature. This is described in S5. b) You can turn on the amplifier and start the warm-up sequence. After 3 minutes you may tune and begin operating the amplifier and you can use the ON LINE information screens or control functions (see below).

  • Page 14: Changing Operate And Standby Modes

    Pressing either the PREV or NEXT buttons during this period will result in changing the screen to one of the I4 available information screens described in S.4-5 below. This action will not influence the warming-up process, so you may pass through all information screens, for instance to monitor the High Voltage value or the Exhaust Air temperature.

  • Page 15: Tuning

    4-4. Tuning Tuning is possible only in operate mode, so you may need to press the OPER button in order to illuminate the LED above it (unless Auto-Operate is active). a) Preliminary information. Tuning the amplifier is a procedure of matching the impedance of the currently used antenna to the optimum tube load resistance.
  • Page 16 We recommend that you tune-up at the center frequencies of the preferred frequency band. First select the band switch and the correct antenna number (never with RF applied!). Then use table 4-I in order to achieve an approximate preset for both TUNE capacitor and LOAD capacitor knobs: Band, MH z Tune Knob Dial...

  • Page 17: On Line Information Screens And Control Functions

    N O T E Appearance of an arrow on either left or right TRI scale edges means that the LOAD knob is too far from the proper position. To correct this, turn the LOAD knob to the prompted direction until the triangle marker appears inside the scale field.

  • Page 18: Auto-Protection System

    b) You can control the display brightness, Auto-Operate feature, and antenna outputs assignment also while ON LINE. In order to enter the control menu press the PREV+NEXT buttons simultaneously and hold them for two seconds. Further proceed as described for OFF LINE mode below - see S.5-1, S.5-2, and S.5-3 for details.

  • Page 19: Display Brightness Control

    5. OFF LINE MODE There are two control functions and I4 information screens available in this state of the amplifier. You can control the VFD brightness, enable/disable the Auto-Operate feature, and assign the antenna outputs. You can also list the auto - protection signatures. The tube is not powered at all (only the micro-controller is active) during these operations.

  • Page 20: Maintenance

    In order to read them press the OPER button while OFF LINE. The display will light at full brightness and you'll see the beginning of the signatures list. Use NEXT and PREV buttons to navigate through 7 pairs of screens. For each auto-protection trip there is a pair of information screens, beginning with nA...

  • Page 21: The Acom1500 Simplified Schematic Diagram

    SUPPLY PCBs. The control grid, screen grid, and plate currents, plate cooling airflow temperature, reflected power etc. are permanently monitored. Many software-derived protections are based on this information. * Detailed electrical schematic diagrams are available from ACOM or from your dealer on request. 6-5. Troubleshooting See S.5-4 for the method of reading the auto-protection signatures.
  • Page 22 SB0 - tests made in Stand-By, during the warm-up period or while entering Stand By (from Operate); SB2 - tests made during Stand-By, after the warm-up period; PR0 - tests made while entering Operate; PR2 - tests made during Operate; TR0 - antenna relay tests made while changing from Tx to Rx (during Operate) TR2 - antenna relay tests made while changing from Rx to Tx (during Operate) TR4 - antenna relay tests made during Tx (Operate mode)

  • Page 23: Specifications

    * Additional information is available from ACOM or from your dealer on how to interpret these values. Using an EXCEL APPLICATION (available from ACOM or your dealer free of charge) and a PC, you can decode these signatures by yourself.

  • Page 24: Functions

    h) Primary Power: I00-264V (I00, II0,I20, 200, 2I0, 220, 230 & 240V nominal taps, +I0% -I5% tol.), 50-60Hz, single phase, 3500VA consumption at rated output. i) Complies with CE safety and electromagnetic compatibility requirements as well as FCC-regulations (I0 & I2m bands lock provided). l) Size &...

  • Page 25: Shipment

    i) Tube: a single 4CX1000A/8168 ceramic and metal radial beam tetrode with plate dissipation of 1000W (forced air cooled, grid-driven), specifically designed for class AB1 RF linear amplifiers. 7-3. Storage and Shipment C A U T I O N Should you need to transport the amplifier, use the original packing as described below.

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