ACOM700S HF + 6 m LINEAR AMPLIFIER OPERATING MANUAL Outstanding HF Power Products
TABLE OF CONTENTS 1. GENERAL INFORMATION..........................................................................................................................3 1-1. 1-2. 1-3. 1-4. 1-5. 2. INSTALLATION............................................................................................................................................5 2-1. 2-2. 2-3. 2-4. 3. Periodic maintenance; general checks and cleaning...............................................................25 Replacement of fuses...
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1. GENERAL INFORMATION 1-1. Inroduction and description This manual describes the installation, operation, and maintenance of the HF+6m solid-state linear power amplifier ACOM 700S. ACOM 700S is a state-of-the art linear amplifier, covering the amateur bands from 1.8 to 54MHz with 700W output power (PEP or continuous carrier) with less than 40W of drive. The amplifier operating information is shown on a multi-functional, high resolution color display.
• Automatic control – when connected to a transceiver with CAT capability, the amplifier will track the operating frequency, and will change bands accordingly. • Even if not CAT connected, the amplifier monitors the input signal frequency through the built-in frequency counter and automatically switches bands. • Remotely controlled by RS232 port. • Takes care of itself during operation via continuously working protection circuits in all modes.
W A R N I N G HIGH VOLTAGE! Both the mains voltage and the high DC voltage up to 500V inside the ACOM 700S amplifier are LETHAL! For your safety, disconnect the power plug from the mains and WAIT AT LEAST three minutes EACH TIME, BEFORE removing the cover of the amplifier.
NOTE Keep the original packing for possible future transportation. Unpack and inspect carefully the contents of the cardboard carton for possible transportation damages. On the amplifier, check-up the chassis, front panel, display, buttons, rear panel connectors, main power switch and fuses. 2-2. Amplifier operating location selection; cooling. Locate the amplifier close to the place where will be used.
b) KEY-IN jack - amplifier input for receive/transmit control from the transceiver. The transceiver switches the amplifier from receive mode into transmit mode (RX/TX) by grounding of the KEY-IN input. Run a shielded cable from the output of your transceiver, providing “ground on transmit”, to the KEY-IN input on the amplifier rear panel (RCA PHONO jack – Fig. 2-1). Use a standard RCA PHONO plug for connection to the amplifier.
The transceiver manufacturers give different names to this input, for example: TX-INHIBIT, MUTE, LINEAR, and others. Check the manual of your transceiver. Approach your dealer for details. If your transceiver has no such input, do not worry – ACOM 700S will operate normally with KEY-OUT unconnected. d) RF INPUT - Connect a coaxial cable with a PL-259 plug from the transceiver output (antenna jack) to the amplifier RF INPUT jack.
2-4. Installing options and connecting to external devices (transceiver, computer, etc.) a) CAT/AUX interface – used for connecting and operating with various transceiver models (see table 2-1 below and the respective menu in S. 5-3, table 5-1 and Fig. 5-3). Most of the modern transceivers can be connected by CAT to the ACOM 700S. This will allow the amplifier to track the transceiver frequency without any transmission and change the bands automatically when in Operate mode.
Table 2-2 RS 232 interface PIN NO. 1 2 3 4 5 6 7 8 Rear panel view 9 PIN NAME DESCRIPTION TxD RxD GND DSR CTS Not connected Transmitted Data Received Data Not connected Ground Remote Power On Not connected Remote Power On - SPECIFICATIONS RS232 level output RS232 level input 0 Volt RS232 level input RS232 level input Not connected - 3. INITIAL POWER ON AND OPERATION CAUTION Do not turn the amplifier on at least two hours after unpacking it and installing in its final operating position.
