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E&I 1020L Manual

Broadband power amplifier
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1020L
Broadband Power Amplifier
HIGH RF VOLTAGES MAY BE PRESENT AT THE OUTPUT OF THIS UNIT. All
operating personnel should use extreme caution in handling these voltages and be
thoroughly familiar with this manual.
Do not attempt to operate this unit prior to reading this manual.
The material contained in this document is the property of Electronics & Innovation Ltd., it is subject to
change without notice.
August 2012
Revision F
1

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Summary of Contents for E&I 1020L

  • Page 1 1020L Broadband Power Amplifier HIGH RF VOLTAGES MAY BE PRESENT AT THE OUTPUT OF THIS UNIT. All operating personnel should use extreme caution in handling these voltages and be thoroughly familiar with this manual. Do not attempt to operate this unit prior to reading this manual.

  • Page 2: Table Of Contents

    Warranty Electronics & Innovation Ltd., (hereafter E&I) warrants for the period of one year from the date of original delivery, each unit to be free of defects in materials and workmanship. For the period of 36 months E&I will, at its option, repair or replace defective parts so as to render the unit fully operational such that it performs according to the original specifications;...
  • Page 3 Over 300 watts of saturated power can be produced with increased distortion products. A quasi linear Class AB design, the 1020L will amplify inputs of AM, FM, SSB, pulse and any complex modulation signals. The amplifier has 53 dB gain it is unconditionally stable and will not oscillate even with combinations of mismatched source and load impedance.

  • Page 4: Chapter 1 General Information

    Table 1-1. SPECIFICATIONS FREQUENCY COVERAGE: 10 kHz to 5 MHz GAIN: 53 dB min, ±1.5 variation CLASS AB OUTPUT: 200 watts SATURATED RF POWER OUTPUT: 300W Min. from 30kHz - 4MHz; INPUT IMPEDANCE: 50 ohms, VSWR, 1.5:1 Maximum OUTPUT IMPEDANCE: 50 ohms, VSWR, 2:1 Maximum Continuous operation into any load or STs STABILITY:...

  • Page 5: Chapter 2 Operation

    Chapter 2 Operation 2.1 INTRODUCTION The 1020L RF amplifier is used to amplify the RF level of signal sources in the 10 KHz to 5 MHz range. No tuning or any other form of adjustment is required. The 1020L produces rated power output at its output connector, regardless of load impedance.
  • Page 6 The 1020L front panel has a passive LCD display designed for simplicity and ease of use. During initialization, the LCD shows the software revision. After the amplifier is initialized, the LCD indicates Forward Power, Reflected Power, and amplifier status (see figure 2.1).
  • Page 7 The 1020L features a standard RS-232 serial interface suitable for connection to a PC or host system. The communication protocol is extremely simple to facilitate readback and control with readily available terminal programs such as Hyperterm. The RS-232 link has the following parameters:...

  • Page 8: Technical Information

    Chapter 3 Technical Description 3.1 GENERAL DESCRIPTION The 1020L is designed to amplify signals by 53 dB in the frequency band of 10 KHz to 5 MHz. The signal from the front panel BNC connector is fed via a length of 50 ohm coaxial cable into the input of the driver amplifier module.

  • Page 9: Maintenance

    Chapter 4 Maintenance 4.1 INTRODUCTION The E&I 1020L RF amplifier requires no periodic maintenance. The instrument is unconditionally stable and is fail-safe under all load conditions. Damage can only be externally caused by the incorrect selection of the AC supply voltage or by an input signal in excess of the specified 1 volt rms equivalent to a power level of 13dBm.
  • Page 10 This chapter therefore, deals only with certain fundamental procedures for fault location. Performance limits quoted are for guidance only and should not be taken for guaranteed performance specifications unless they are also quoted in the Specification Section 1.2. 4.2 PERFORMANCE CHECKS To determine the amplifier’s performance carry out the following procedure.
  • Page 11 Set the sweep generator to the video sweep mode with the start frequency at 10 kHz and the sweep width to 5 MHz. Disconnect the 1020L from the set-up and connect the sweep/generator RF output directly to the 30 dB attenuator.
  • Page 12 (CCW) so that the output is reduced by 53 dB. Reconnect the 1020L into the test set-up of Figure 4-1. Place the 1020L power switch to the "ON" position. Observe the gain versus frequency sweep on the oscilloscope.

  • Page 13: Chapter 5 Safety

    scanning the frequency band of 10 KHz to 5 MHz. An indicated power output of 200W should be maintained during this operation. PACKAGING FOR RESHIPMENT In the event of the equipment being returned for servicing it should be packed in the original shipping carton and packing material.