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MODEL
ME7840A
POWER AMPLIFIER TEST SYSTEM
OPERATION AND
MAINTENANCE MANUAL
490 JARVIS DRIVE - MORGAN HILL, CA 95037-2809
P/N: 10410-00225
REVISION: A
PRINTED: JUNE 2000
COPYRIGHT 2000 ANRITSU CO
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WARRANTY The ANRITSU product(s) listed on the title page is (are) warranted against defects in materials and workmanship for three years from the date of shipment. ANRITSU’s obligation covers repairing or replacing products which prove to be defective during the warranty period. Buyers shall prepay transportation charges for equipment returned to ANRITSU for warranty repairs. Obligation is limited to the original purchaser. ANRITSU is not liable for consequential damages. LIMITATION OF WARRANTY
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Safety Symbols To prevent the risk of personal injury or loss related to equipment malfunction, ANRITSU Company uses the following symbols to indicate safety-related information. For your own safety, please read the informa- tion carefully BEFORE operating the equipment. Symbols used in manuals DANGER This indicates a very dangerous procedure that could result in serious injury or death if not performed properly. WARNING This indicates a hazardous procedure that could result in serious in- jury
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For Safety WARNING Always refer to the operation manual when working near locations at which the alert mark, shown on the left, is attached. If the operation, etc., is performed without heeding the advice in the operation manual, there is a risk of personal injury. In addition, the equipment perfor- mance may be reduced. Moreover, this alert mark is sometimes used with other marks and de- scriptions indicating other dangers. WARNING When supplying power to this equipment, connect the accessory 3
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Table of Contents Chapter 1 General Information SCOPE OF THIS MANUAL...............................1-1 INTRODUCTION ....................................1-1 RELATED MANUALS .................................1-1 CONVENTIONS.....................................1-2 SERIAL NUMBER ...................................1-2 ONLINE MANUALS ..................................1-2 PATS SYSTEM OVERVIEW ..............................1-2 HARDWARE DESCRIPTION..............................1-2 SYSTEM DESCRIPTION......
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Installation .....................................2-7 What else is on the CD?...............................2-7 Uninstalling the software..............................2-7 SERVICE CENTERS ..................................2-8 Chapter 3 Operations, General INTRODUCTION ....................................3-1 PREPARING THE SYSTEM ..............................3-1 Unused Connections ................................3-2 USING PATS SOFTWARE ...............................3-4 Software Organization......
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Gain and IMD Power Sweep ........................... 5-18 POWER SWEEP, ONE TONE............................. 5-22 Single Frequency Power Sweep.......................... 5-22 IMD........................................... 5-26 HARMONICS ..................................... 5-29 HOTS22 ........................................ 5-32 Chapter 6 Performance Verification Procedure INTRODUCTION ....................................6-1 CONVENTIONS.....................................6-1 TEST EQUIPMENT ...
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Figure 1-1. Model ME7840A Power Amplifier Test System (PATS)
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Chapter 1 General Information 1-1 SCOPE OF THIS This manual provides operating and maintenance information for the MANUAL ME7840A Power Amplifier Test System (PATS, Figure 1-1). The follow- ing topics are discussed: Equipment Description Equipment Installation and Connection Software Description Software Installation Calibration System Operation Test Procedures and Test Results Interpretation System Performance Verification The procedures described in this manual presume a workin
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CONVENTIONS GENERAL INFORMATION 1-4 CONVENTIONS Throughout this manual, the ME7840A Power Amplifier System may be referenced as PATS or ME7840A; the MS462XC may be referenced as Scorpion or MS462XC; and the MS4782X Test Set may be referenced as Test Set or MS4782X. 1-5 SERIAL NUMBER All ANRITSU instruments are assigned a unique six-digit serial number, such as “940101.” This number is affixed to a decal on the rear panel of each unit. In any correspondence with ANRITSU Customer Service, please u
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GENERAL INFORMATION HARDWARE DESCRIPTION SOURCE 2 SOURCE 1 GPIB SYSTEM CONTROLLER (PC) FORWAR REVERSE D TRANSFER SWITCH GPIB STEP ATTENUATORS 70dB, 10dB/step ANALOG IN RECEIVERS EXT I/O a a b b 1 1 2 RF1 2 RF2 RF3 N N CONTROL KK K K N LINES OPTIONAL EXTERNAL PREAMPLIFIERS N K K K K N N K COMBINER C3 -30dB K C2 LIMITER EXTERNAL CIRCULATOR K C1 OPTIONAL STEP SPECTRUM ATTENUATOR ANALYZER 70dB, 10dB/step -30dB -30dB POWER -30dB METER NK N K N N AUT OPTIONAL OPTIONAL MODULATION POWER EXTERNAL SYNTHES
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HARDWARE DESCRIPTION GENERAL INFORMATION SOURCE 2 SOURCE 1 GPIB SYSTEM CONTROLLER (PC) FORWAR REVERSE D TRANSFER SWITCH GPIB STEP ATTENUATORS 70dB, 10dB/step ANALOG IN RECEIVERS EXT I/O a a 1 b b RF2 RF3 RF1 1 2 2 N NKK K K N CONTROL LINES OPTIONAL EXTERNAL PREAMPLIFIERS K N N K K K N COMBINER -30dB LIMITER OPTIONAL STEP SPECTRUM ATTENUATOR ANALYZER 70dB, 10dB/step -30dB -30dB POWER -30dB METER NK K N N N AUT OPTIONAL OPTIONAL MODULATION POWER EXTERNAL SYNTHESIZER SUPPLY PRE-AMP CURRENT PROBE In
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GENERAL INFORMATION SYSTEM DESCRIPTION Table 1-1. Test Set Configurations Frequency Range Max AUT Power Output Reverse Measurements Circulator Model (MHz) (Watts) (S , Hot S ,S Possible) (at AUT Output Path) 22 22 12 MS4782A 800 to 1000 50 Yes Internal MS4782D 800 to 2400 100 Yes External (Note 1) (Note 2) Notes: 1. This frequency range does not account for any restricting effects caused by use of external circulator. 2. This Max AUT power assumes a minimum isolation of 23 dB provided by externa
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SYSTEM DESCRIPTION GENERAL INFORMATION MS4782X Test Set The Series MS4782X Test Set contains a Wilkinson type combiner that combines the two RF signals from Ports 1 and 3 (RF1 & RF3) of the Scor- pion. External preamplifiers can optionally be provided at the combiner input to boost the input RF power to the amplifier-under- test (AUT). The combiner has power input rating of 30-Watts maximum when terminated with a VSWR of 1.2:1. For an open or short at the combiner output, the combiner input powe
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GENERAL INFORMATION SYSTEM DESCRIPTION Bandwidth: Should be sufficiently wide to cover the frequency band of the AUT. Isolation: Should be no less than (P 27 dB), where P is the o o power output in dBm of the AUT. Thus for Po = 47 dBm (50 watts), a 20 dB isolation is required. For a P greater than 47 dBm up to 50 o dBm (100 watts), two circulators in series can be used. Where S or Hot S measurements are not required, power amplifiers 22 22 with up to 100 watts average output power can be te
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SYSTEM DESCRIPTION GENERAL INFORMATION Serial Port Ethernet VGA SCSI-2 IEEE 488.2 GPIB LPT Line Printer Ext I/O Dedicated GPIB Ext Ext 47-440 Hz Analog Trigger 85-264VAC Output REPLACE FUSE ONLY WITH SAME TYPE AND RATING WARNING NO OPERATOR SERVICE- ABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. CAUTION FOR CONTINUED FIRE PROTECTION REPLACE ONLY WITH SPECIFIED TYPE AND RATED FUSE. N274 CAUTION DO NOT OPERATE WITH POWER CORD UNGROUNDED Noise Noise Ext Analog Ext Ext 10 MHz a a b b 1 2
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GENERAL INFORMATION K FACTOR S ) are not desired, then a circulator is not required. Instead, a through 22 line should be connected between connectors C1 and C2 (Figure 1-5). The MS4782A is shipped from the factory with this through line in place. 1-10 K FACTOR K factor is a parameter which is sometimes used to indicate the stability of an amplifier. K factor is a function of all four S parameters and is de - fined by the formula 2 22 1SS 11 22 K 2SS 11 21 Where =S S S S 11 22 12 21 Th
