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E&I 3100L Instruction Manual
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E&I 3100L Instruction Manual

Broadband power amplifier
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3100L
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.
1
February 2007
Revision B

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Summary of Contents for E&I 3100L

  • Page 1 3100L 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 12 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: General Information

    Chapter 1 Introduction The 3100L is a broadband solid state amplifier covering the frequency spectrum from 150 KHz to 120 MHz. It is rated at 100 watts of RF power with low harmonic and intermodulation distortion. Over 200 watts of saturated power can be produced with increased distortion products.

  • Page 4: Operation

    RACK MOUNTING: Chapter 2 Operation 2.1 INTRODUCTION The 3100L RF amplifier is used to amplify the RF level of signal sources in the 150 KHz to 150 MHz range. No tuning or any other form of adjustment is required. The 3100L produces rated power output at its output connector, regardless of load impedance.
  • Page 5 2.3.2 Front Panel Display The 3100L 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 6 Service Department. 2.3.3 RS 232 Interface The 3100L 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.

  • Page 7: Technical Information

    Chapter 3 Technical Description 3.1 GENERAL DESCRIPTION The 3100L is designed to amplify signals by 50 dB in the frequency band of 150 KHz to 150 MHz. The signal from the front panel N connector is fed via a length of 50 ohm coaxial cable into the input of the driver amplifier module.

  • Page 8: Maintenance

    Chapter 4 Maintenance 4.1 INTRODUCTION The E&I 3100L 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 9 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 10 Set the sweep generator to the video sweep mode with the start frequency at 150 kHz and the sweep width to 120 MHz. Disconnect the 3100L from the set-up and connect the sweep/generator RF output directly to the 30 dB attenuator.
  • Page 11 Return sweep/generator output level to full deflection. Rotate the step attenuator (CCW) so that the output is reduced by 50 dB. Reconnect the 3100L into the test set-up of Figure 4-1. Place the 3100L power switch to the "ON" position.

  • Page 12: Safety

    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. If this is not available, wrap the instrument in heavy paper or plastic and place in a rigid outer box of wood, fiberboard or very strong corrugated cardboard.