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2200L
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
Jan 2006
Revision B
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Summary of Contents for E&I 2200L
- Page 1 2200L 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 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 Chapter 1 Introduction The 2200L is a broadband solid state amplifier covering the frequency spectrum from 10 KHz to 12 MHz. It is rated at 200 watts of RF power with low harmonic and intermodulation distortion. Over 300 watts of saturated power can be produced with increased distortion products.
- Page 4 Chapter 2 Operation 2.1 INTRODUCTION The 2200L 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 2200L produces rated power output at its output connector, into most loads, regardless of load impedance.
- Page 5 2.3.2 Front Panel Display The 2200L 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 If the fault persists, please contact Field Service. 2.3.3 RS 232 Interface The 2200L 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 Chapter 3 Technical Description 3.1 GENERAL DESCRIPTION The 2200L is designed to amplify signals by 53 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 8 Rev _in DC_ok_ret DC Status_ret DC Status PSU Enable ret PSU Enable Controller LCD1 Title 2200L RF Amplifier 3200L RF Amplif ier Size Document Number 2200L – SCH-01 3200L-SCH-01 1/12/05 Date: Sheet The material contained in this document is the property of Electronics & Innovation Ltd., it is subject to change without notice.
- Page 9 Chapter 4 Maintenance 4.1 INTRODUCTION The E&I 2200L 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 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. 4.2.1 Initial Check The following check can be made after repair and adjustments or whenever the condition of the unit is in question.
- 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 2200L into the test set-up of Figure 4-1. The material contained in this document is the property of Electronics & Innovation Ltd., it is subject to change without notice.
- Page 12 Place the 2200L 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 4 dB as shown on the •...
- Page 13 scanning the frequency band of 10 KHz to 12 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.