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Form 080/01
Complimentary Reference Material
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Summary of Contents for E&I 240L
- Page 1 Complimentary Reference Material This PDF has been made available as a complimentary service for you to assist in evaluating this model for your testing requirements. TMG offers a wide range of test equipment solutions, from renting short to long term, buying refurbished and purchasing new. Financing options, such as Financial Rental, and Leasing are also available on application.
- Page 2 240L 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 3 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 4 Over 100 watts of saturated power can be produced with increased distortion products. A highly linear Class A design, the 240L will amplify inputs of AM, FM, SSB, pulse and any complex modulation signals. The amplifier has 50 dB gain it is unconditionally stable and will not oscillate even with combinations of mismatched source and load impedance.
- Page 5 Chapter 2 Operation 2.1 INTRODUCTION The 240L RF amplifier is used to amplify the RF level of signal sources in the 10 KHz to 12 MHz range. No tuning or any other form of adjustment is required. The 240L produces rated power output at its output connector, regardless of load impedance.
- Page 6 2.3.2 Front Panel Display The 240L 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 If the fault persists, please contact Field Service. 2.3.3 RS 232 Interface The 240L 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 8 Chapter 3 Technical Description 3.1 GENERAL DESCRIPTION The 240L is designed to amplify signals by 50 dB in the frequency band of 10 KHz to 12 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 Chapter 4 Maintenance 4.1 INTRODUCTION The E&I 240L 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 The material contained in this document is the property of Electronics &...
- Page 10 input signal in excess of the specified 1 volt rms equivalent to a power level of 13dBm. 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.
- Page 11 Set the sweep generator to the video sweep mode with the start frequency at 10 kHz and the sweep width to 12 MHz. Disconnect the 240L from the set-up and connect the sweep/generator RF output directly to the 30 dB attenuator.
- Page 12 Reconnect the 240L into the test set-up of Figure 4-1. Place the 240L power switch to the "ON" position. Observe the gain versus frequency sweep on the oscilloscope. The average gain should be greater 50 dB • The gain variation should be within the 3 dB as shown on the •...
- Page 13 harmonics is less than -25 dB with respect to the carrier while manually scanning the frequency band of 10 KHz to 12 MHz. An indicated power output of 40W 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.
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