ETS LINDGREN 8000-063 RF Power Amplifier User Manual

ETS LINDGREN 8000-063 RF Power Amplifier User Manual

Notes, Cautions, and Warnings

Safety Symbols

Introduction

The ETS-Lindgren Model 8000-026 RF Power Amplifier is capable of supplying a minimum of 2500 watts into a 50 ohm load over the frequency range 10 kHz to 250 MHz. The amplifier is designed with sufficient gain so that it may be used with normal output levels of signal sources.

• A safety interlock on the rear panel is also provided, which will mute the amplifier when grounded.
• The unit is powered by a switched mode power supply for high efficiency, high power factor, and a wide voltage range operation. The unit is air cooled with integral fans and is protected against faulty cooling by excess temperature sensing
• A front panel fault indicator is provided to indicate over-temperature, loss of air flow or fan failure and any potential imbalance between the amplifier modules.

The amplifier is designed for rugged operation into a variety of loads and is primarily intended for use as an RF power source for EMC susceptibility testing, but is also applicable to other systems requiring a wide-band linear amplifier.

This amplifier is designated as Professional Equipment and should not be operated by untrained staff. As this product has the capability to generate high levels of RF energy it is not intended for use in a residential environment.

Standard Configuration

• The 8000-026 amplifier system comes already assembled and connected into a 19-inch 34U rack.
• The N type input and 7/16 output connectors are located on the rear panel.

Maintenance

Service Procedures

CONTACTING ETS-LINDGREN

SENDING A COMPONENT FOR SERVICE

1. Contact ETS-Lindgren Customer Service to obtain a Service Request Order (SRO).
2. Briefly describe the problem in writing. Give details regarding the observed symptom(s) or error codes, and whether the problem is constant or intermittent in nature. Please include the date(s), the service representative you spoke with, and the nature of the conversation. Include the serial number of the item being returned.
3. Package the system or component carefully. If possible, use the original packing materials or carrying case to return a system or system component to ETS-Lindgren.

CALIBRATION SERVICES

• Annual Calibration- -For reliable and repeatable long-term performance, annual recalibration of your measuring device by an ETS-Lindgren experienced technician is recommended. The ETS-Lindgren calibration team will calibrate most any type or brand of measuring device. Additional information is available at ets-lindgren.com.
• Calibration Services Plus!TM–Calibration Services Plus! is a customized, optional program to help you expertly maintain your test and measurement assets. It is designed to address the challenges of managing the calibration and repair of test and measurement components, including scheduling and planning to ensure peak performance. Additional information is available at ets-lindgren.com.

Specifications

Electrical Specifications

– 250MHz)*

• De-rating slope of 4.0W/MHz
  Output Power at 1dB Gain Compression| 2100W Minimum (10kHz – 100MHz) 2000W – 1300W (100MHz – 250MHz)*
• De-rating slope of 5.3W/MHz
  Gain| 64dB
  Third Order Intercept Point| 70dBm
  Gain Variation with Frequency| +/- 3dB
  Harmonics at 1300W Output Power| Better than -20dBc
  Output Impedance| 50 Ohms
  Stability| Unconditional
  Output VSWR Tolerance| Infinity:1
  Input VSWR| 2:1 (Max)
  RF Connector Style| Input: Type N Female Output: 7/16 Female
  Safety Interlock| 2 x BNC Female, S/C and O/C to Mute
  USB/GPIB/Ethernet Interface| Standard

Physical Specifications

Environmental

Before You Begin

Unpacking

The 8000-026 amplifier is supplied fully assembled in a 19 inch 34U rack and has the following contents:

• User Manual (This document)
• Calibration Test Report
• Remote Control Interface User Manual
• Remote Control Interface CD
• USB Cable

If any signs of damage are found no attempt should be made to install or operate the amplifier system. Contact ETS-Lindgren Customer Service immediately to report the problem.

If the shipping carton has been damaged, retain the shipping carton and packing material for the carrier’s inspection. Check that the equipment is complete and is in an undamaged condition, and then contact ETS-Lindgren Customer Service for further advice.

Safety Information

• This RF amplifier has been designed and tested in accordance with BS EN61010-1 and has been supplied in a safe condition. This manual contains warning information which must be followed to ensure safe operation and to retain the apparatus in a safe condition.
• This apparatus does not incorporate components liable to explode or implode during normal operating conditions.
• In normal operating conditions this apparatus does not liberate injurious or poisonous gases.
• Sound levels of this apparatus in a rack are below 85dBA as required by EN61010-1.
• If local regulations have a lower limit, appropriate action should be taken in line with the local regulations so as to comply.
• This apparatus is of Installation Category 2.

Warnings

WARNING: This apparatus is capable of delivering harmful levels of radio frequency power. Ensure at all times during operation that the RF output is properly terminated with an adequately rated termination or transducer and that the cables and connectors attached to the apparatus are in good condition.

The use of suitably rated mains cords must only be used as specified within this document, see Rear Panel, Mains Input on Page 16.

The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. The protective action must not be negated by the use of an extension cord without a protective conductor.

The opening of covers or removal of parts is likely to expose live parts.

This apparatus must only be serviced by qualified service personnel and must be disconnected from all voltage sources before it is opened for adjustment, replacement, maintenance, or repair.

Make sure that only fuses of the required rated current and of the specified type are used for replacement. The use of makeshift fuses and the short-circuiting of fuse holders are prohibited.

Installation

Star / Delta Configuration

If supplied with 3 phase mains in Star (Y) connection, a neutral line must be supplied. In Delta configuration no neutral is required.

Mains Input

Mains input is via a ready wired IEC 60309 3 phase plug.. Star (Y) configuration is supplied with a 5-pin plug. Delta configuration is also supplied with a 5-pin plug; although neutral is present, it is unused. If the plug requires rewiring, the brown, black and grey lines are live 1, 2 and 3 respectively, blue is neutral (Star (Y) only) and green/yellow is earth.

Amplifier Protection

The amplifier is protected by means of a miniature circuit breaker (MCB) which is located at the rear of the power supply unit. Where possible it is best to position the amplifier so that the MCB is accessible.

Operation

Equipment Use

The equipment must only be used for its intended purpose. All parts of the equipment must remain connected to ensure that protective circuits operate. Disconnecting parts of the equipment may impair operation and safety.

Mains Switch

The amplifier is switched on or off by pressing the green/red button on the front of the power supply unit.

Standby/Operate Switch (Centre Unit)

Pressing the standby/operate switch toggles the state of the amplifier between Standby and Operate modes. The blue halo indicator flashes in Standby mode, whereas steady blue indicates Operate mode.

Fault Indicator (Red LED)

Should a fault be detected, the red LED on the centre unit front panel will be illuminated. The amplifier will be forced into standby mode and the unit will cease to function (only the fans will continue to operate). This action is latching, therefore only when the fault has been cleared can the amplifier be reset; this is done by pressing the standby/operate switch.

The reasons for the system fault light to illuminate are as follows:

• Excess module temperature
• Air cooling failure (fans failing to operate)
• Power supply failure
• High imbalance detected in final combiner (within the centre unit)

Interlock Indicator (Orange LED)

When the rear panel interlock is activated the interlock indicator will illuminate and the amplifier gain stages will all be turned off. This action is latching; therefore, the amplifier will return to Standby mode when the interlock is released.

Local Lockout Indicator

This indicator is used with the USB/GPIB/Ethernet Interface. Refer to the separate Remote Control Interface manual supplied.

RF Input (Rear Panel Mounted)

The RF input will accept a signal from an RF generator. This input must be within the operating frequency range of the 8000-026 amplifier system. An amplitude of up to 0dBm will be sufficient to saturate the amplifier. Operation outside the specified frequency range should not be attempted as it may subject the amplifier to undue internal stress.

RF Output (Rear Panel Mounted)

This connector must be suitably terminated at all times during operation. Ensure that the cable is capable of handling the power available, which may be as much as 4000 watts.

Air Inlet

This amplifier requires a free air supply for cooling; the front air inlet must not be restricted.

Safety Interlock

• A dual interlock system can be operated by applying either short circuit (S/C) or open circuit (O/C) to mute the amplifier.
  In order for the amplifier to operate, the  Interlock  BNC connector must be S/C and the Interlock must be O/C. If the  Interlock  is O/C or the Interlock is S/C the amplifier will be muted.

• The amplifier is delivered without the interlock applied and will be ready to operate.

• The interlock function is latching so when the interlock is removed the amplifier will be in standby mode. Press the standby/operate switch to return to normal operation.

• Current drawn from the interlock BNC connectors under short circuit conditions will typically be 2.8mA

Fan Outlet

This amplifier requires a free air supply for cooling; the rear air outlets must not be restricted.

Appendix A: EC Declaration of Conformity

ETS-Lindgren Inc. declares these products to be in conformity with the following standards, following the provisions of EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU:

Model 8000-026, RF Power Amplifier

Emission:  EN 61326-1:2013, Class A Electrical equipment for measurement, control, and laboratory use.
Immunity:  EN 61326-1:2013, Industrial level, performance criteria A Electrical equipment for measurement, control, and laboratory use.
Safety:  EN 61010-1:2010, AMD1:2016
Safety requirements for electrical equipment for measurement, control, and laboratory use.
Technical Construction Files are available upon request.

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