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Summary of Contents for Anritsu ML2430A Series
- Page 1 ML2430A SERIES POWER METER MAINTENANCE MANUAL P/N: 10585-00003 490 JARVIS DRIVE • MORGAN HILL, CA 95037-2809 REVISION: E PRINTED: April 2009 COPYRIGHT 1998 - 2009 ANRITSU CO. www.valuetronics.com...
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Page 2: Limitation Of Warranty
WARRANTY The ANRITSU product(s) listed on the title page is (are) warranted against defects in materials and workmanship for one year from the date of shipment. ANRITSU's obligation covers repairing or replacing products which prove to be defective during the warranty period. -
Page 3: Safety Symbols
Safety Symbols Used on Equipment and in Manuals (Some or all of the following five symbols may or may not be used on all ANRITSU equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.) -
Page 4: For Safety
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 performance may be reduced. -
Page 5: Table Of Contents
Table of Contents Chapter 1 General Information SCOPE OF THIS MANUAL ......1-1 INTRODUCTION ....... . 1-1 RELATED MANUALS . - Page 6 4-10 FRONT PANEL CONNECTORS ......4-4 4-11 REAR PANEL CONNECTORS......4-5 4-12 POWER SUPPLY OPERATION .
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Page 7: Chapter 1 General Information
This manual provides general information, performance verification, cali- MANUAL bration, theory, and service information for the Anritsu ML2430A Series Power Meter. The ML2430A Series Power Meters are shown below in Fig- ure 1-1. Figure 1-1. ML2430A Series Power Meters INTRODUCTION... -
Page 8: Identification Number
IDENTIFICATION NUMBER GENERAL INFORMATION IDENTIFICATION The ML2430A Series ID number is affixed to the rear panel. Please NUMBER use the complete ID number when ordering parts or corresponding with the ANRITSU Customer Service department. The ML2430A Series Power Meter is available with either one or two MODELS, OPTIONS, AND sensor inputs. -
Page 9: Service Policy
SERVICE POLICY INFORMATION SERVICE POLICY The preferred ML2430A Series Power Meter service policy is to exchange the complete unit. This policy ensures minimum down time for the customer. Unit Exchange The customer returns the power meter to the nearest Anritsu Customer Serv- Policy ice Center and an identical meter is issued in exchange. -
Page 10: Component Handling
GENERAL INFORMATION COMPONENT HANDLING The ML2430A Series contains components that can be damaged by static electricity. The following figures illustrate the precautions that should be followed when handling static-sensitive subassemblies and components. If followed, these precautions will minimize the possibili- ties of static-shock damage to these items. -
Page 11: Chapter 2 Performance Verification
Chapter 2 Performance Verification INTRODUCTION Performance of the Anritsu ML2430A Series Power Meter can be verified us- ing the procedures in this chapter. TEST CONDITIONS The equipment is intended for use as calibration instruments, and as such must be operated under controlled conditions of temperature and humidity in order to meet its specified precision and stability. -
Page 12: Input Range
INPUT RANGE PERFORMANCE VERIFICATION 2. On connection of the sensor cable(s), the meter automatically detects a Range Calibrator is present and displays the performance verification menus. ANRITSU Range Calibrator - more - Figure 2-1. ML2419A Top Level Menu (single-channel) ANRITSU... - Page 13 PRINT The verification data can be printed using the PRINT selection. The data is output through the ML2430A Series Power Meter rear panel printer port. The printer parameters will be the same as those selected when operating the meter in stand-alone mode.
- Page 14 INPUT RANGE PERFORMANCE VERIFICATION 2.01 Zeroed Zeroed Figure 2-4. Example Range Calibrator Report 5. To exit the Range Calibrator mode, disconnect the sensor cables. The Power Meter will reset to the default mode. ML2430A MM www.valuetronics.com...
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Page 15: Range Data Interpretation
PERFORMANCE VERIFICATION RANGE DATA INTERPRETATION RANGE DATA The tabular data presented by the Range Calibrator consist of the values INTERPRETATION read by the meter for each range, with one measurement taken at each end of each range. For each of these measurements, there is an expected value. These measured values must meet the specification limits defined in the ML2419A Range Calibrator Operation and Maintenance Manual (10585-00007). -
Page 16: Range Calibrator Diagnostics
RANGE CALIBRATOR DIAGNOSTICS PERFORMANCE VERIFICATION RANGE The Range Calibrator Diagnostics mode allows the user to investigate meter CALIBRATOR problems by holding on any of the fixed level outputs to examine the results DIAGNOSTICS of a particular measurement. From the top-level menu press -more- and DIAGS. -
Page 17: Calibrator Frequency
CALIBRATOR FREQUENCY CALIBRATOR The following procedure is used to measure the Calibrator output frequency FREQUENCY of the ML2430A Series Power Meter. Equipment Required: Anritsu MF2412B Frequency Counter or equivalent RF Cable with BNC male connection at one end and an N-type male connection at other end. - Page 18 CALIBRATOR FREQUENCY PERFORMANCE VERIFICATION 3. On the MF2412B, press the Input key (also the number 0 key). Figure 2-7. MF2412B 4. On the MF2412B, press the Left Arrow key to highlight Input CH area. Figure 2-8. MF2412B ML2430A MM www.valuetronics.com...
- Page 19 PERFORMANCE VERIFICATION CALIBRATOR FREQUENCY 5. On the MF2412B, press the Enter key until Input 2 is selected. Figure 2-9. MF2412B 6. On the MF2412B, press the Right Arrow key to highlight the Impd2 area. Figure 2-10. MF2412B ML2430A MM www.valuetronics.com...
- Page 20 CALIBRATOR FREQUENCY PERFORMANCE VERIFICATION 7. On the MF2412B, press the Enter key until 50 W is selected. Figure 2-11. MF2412B 8. On the MF2412B, press the Return to Meas key. Figure 2-12. MF2412B 2-10 ML2430A MM www.valuetronics.com...
- Page 21 PERFORMANCE VERIFICATION CALIBRATOR FREQUENCY 9. Connect an RF cable from Input 2 of the MF2412B to the Calibrator output of the ML243xA. Figure 2-13. MF2412B and ML243xA 10. On the ML243xA, turn on the RF calibrator by pressing the Cal / Zero key, then the More soft key, then press the RF Off soft key so RF ON is displayed.
- Page 22 CALIBRATOR FREQUENCY PERFORMANCE VERIFICATION Calibrator Frequency The sources of uncertainties of the frequency counter measurement at Uncertainty: 50 MHz include: One Count: Least significant digits (LSD) of the frequency counter Time base accuracy from either of the following: GPS Disciplined Oscillator MF2412B Frequency Counter Residual error of the frequency counter: Normal-Mode Measurement Frequency / 1 x 10...
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Page 23: Calibrator Power Level
CALIBRATOR POWER LEVEL CALIBRATOR The following procedure is used to measure the Calibrator output POWER LEVEL power level of the ML2430A Series Power Meter. Equipment Required: Agilent 432A Analog Power Meter Agilent 34420A Nano Volt / Micro Ohm Meter or equivalent... - Page 24 CALIBRATOR POWER LEVEL PERFORMANCE VERIFICATION Connection shown to the Agilent 34420A volt meter. Figure 2-15. 34420A Volt Meter Connection shown to the rear of the 432A power meter: Green = V White = GND of V Red = V comp Black = GND of V comp Figure 2-16.
- Page 25 PERFORMANCE VERIFICATION CALIBRATOR POWER LEVEL 2. Connect the Agilent Power Sensor 8478B to the Agilent 432A Power Me- ter. 432A Power Meter shown connected to the 8478B power sensor. Figure 2-17. 432A Power Meter 3. Power on the 432A power meter and the 34420A voltmeter. Allow the units to warm up for 15 minutes before taking any measurements.
- Page 26 CALIBRATOR POWER LEVEL PERFORMANCE VERIFICATION 4. On the front panel of the 432A power meter, set the mount resistance to 200 W. Figure 2-18. 432A Power Meter 5. On the front panel of the 432A power meter, set the calibration factor to 100.
- Page 27 PERFORMANCE VERIFICATION CALIBRATOR POWER LEVEL 7. On the front panel of the 432A power meter, set the Range to 0 dBm. Figure 2-20. 432A Power Meter 8. On the ML243xA, set the RF Calibrator to RF OFF. This can be done by pressing the Cal/Zero hard key, then the More soft key, and then verify the left-most soft key shows RF OFF.
- Page 28 CALIBRATOR POWER LEVEL PERFORMANCE VERIFICATION 9. Connect the 8478B power sensor to the ML243xA Calibrator. Figure 2-22. ML243xA and 432A Power Meters and 34420A Volt Meter 10. Select DCV 1-2 on the Agilent 34420A. Record the number shown in the display of the 34420A as V = ____________ V Figure 2-23.
- Page 29 PERFORMANCE VERIFICATION CALIBRATOR POWER LEVEL 11. On the ML243xA, set the RF Calibrator to RF ON, by pressing the left-most soft key to change it from RF OFF to RF ON. Figure 2-24. ML243xA Power Meter 12. Record the new number on the Agilent 34420A as V = ____________ Volts 13.
- Page 30 CALIBRATOR POWER LEVEL PERFORMANCE VERIFICATION 14. Use the below equation to determine P (the Reference Calibrator out- meas put power in Watts). Start by finding the Mismatch (M), then using this number, along with V , R, and EE to solve for P comp meas ⎡...
- Page 31 PERFORMANCE VERIFICATION CALIBRATOR POWER LEVEL Calibrator Power The formula for standard uncertainty is: Level Uncertainty: × × Standard Uncertainty X Uncerta int ) ( Sensitivity C Divisor The divisor of each source of uncertainty is determined by the type of proba- bility distribution of each uncertainty source.
- Page 32 CALIBRATOR POWER LEVEL PERFORMANCE VERIFICATION The standard uncertainty of each source of uncertainty in Table 2-1 is calcu- lated as follows: − ⎡ ⎤ × × × × 000003 0000004 10 ⎢ ⎥ comp comp × × × EE M ⎣...
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Page 33: Chapter 3 Calibration Procedures
Chapter 3 Calibration Procedures INTRODUCTION This chapter details the process of calibrating an ANRITSU ML2430A Series Power Meter. This calibration entails adjusting the Reference Calibrator's 50 MHz output frequency and 1 mW output power level. The Power Meter is warmed up for 15 minutes and adjustments are made to the internal DC reference and the RF calibrator. -
Page 34: Test Conditions
TEST CONDITIONS CALIBRATION TEST CONDITIONS The ML2430A Series Power Meter must be operated under controlled condi- tions of temperature and humidity in order to meet its specified precision and stability. All tests should ideally be performed at a temperature of 25° C (77° F) ± 5° C and a relative humidity of less than 75%, non-condensing. -
Page 35: Pre-Test Setup
CALIBRATION PRE-TEST SETUP Figure 3-1. ML2430A Series Top Cover Removal ML2430A MM www.valuetronics.com... - Page 36 PRE-TEST SETUP CALIBRATION Figure 3-2. ML2430A Series Main PCB ML2430A MM www.valuetronics.com...
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Page 37: Dc Reference
CALIBRATION DC REFERENCE DC REFERENCE To calibrate the DC Reference: 1. Connect a sensor via a 1.5m sensor cable to input A. 2. Connect the DVM between TP 113 (gnd) and TP 1 (+5.000V). 3. Enter the ML2430A Service Mode by pressing the front panel keys as fol- lows: Press System Press -more-... -
Page 38: Calibrator Frequency
CALIBRATION CALIBRATOR The following procedure is used to adjust the Calibrator output frequency of FREQUENCY the ML2430A Series Power Meter. Equipment Required: Anritsu MF2412B Frequency Counter RF Cable with BNC male connection at one end and an N-type male connection at other end... -
Page 39: Calibrator Power Level
CALIBRATOR POWER LEVEL CALIBRATOR The following procedure is used to adjust the Calibrator output power POWER LEVEL level of the ML2430A Series Power Meter. Equipment Required: Agilent 432A Analog Power Meter Agilent 34420A Nano Volt / Micro Ohm Meter Agilent 8478B Power Sensor... - Page 40 www.valuetronics.com...
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Page 41: Chapter 4 Theory Of Operation
Power vs. Time Mode: Similar to Profile mode but with wider dynamic range (+20 dBm to –70 dBm) and longer time periods (approximately 20 seconds). Source Sweep Mode: This feature allows the ML2430A Series Power Meter to be synchronized to an RF source using the Horizontal ramp (to Analog Input) and Sequential Sync (Digital Input). -
Page 42: General Operation
This range changing is transparent. HUMAN The ML2430A Series Power Meter front panel has a large LCD unit, 240 pix- INTERFACE els wide by 64 pixels high, used to show measurement readouts and display soft key menus. -
Page 43: Gpib Operation
THEORY OF OPERATION GPIB OPERATION GPIB OPERATION The ML2430A Series Power Meter GPIB operation is provided by a fully inte- grated National Instruments TNT4882 IC. Most power meter front panel functions are available by GPIB command. The Anritsu Power Meter offers five modes of GPIB operation;... -
Page 44: Front Panel
The bottom 10% is a single text line for the menus. System Keys The operation of the ML2430A Series Power Meter is controlled by five sys- tem keys: Sensor, Channel, Trigger, System, and Cal/Zero. Each of these keys generates a soft key menu on the bottom line of the display. -
Page 45: Rear Panel Connectors
GPIB Standard General Purpose Interface Bus connector used to connect through GPIB to other test equipment and a host computer. The ML2430A Series is compatible with IEEE-488.1/2 requirements. Refer to the ML2430A Series Power Meter Operation Manual for information on using GPIB. -
Page 46: Power Supply Operation
This section describes the ML2430A Series Power Meter battery operation. OPERATION Battery The battery used in the ML2430A Series Power Meter is the 3000 mAh Du- racell DR36S or 3500 mAh Energizer NJ1020. The battery is intelligent and contains information on charge status. - Page 47 BLOCK DIAGRAM THEORY OF OPERATION Figure 4-1. ML2430A Series Power Meter Functional Block Diagram ML2430A MM 4-7/4-8 www.valuetronics.com...
- Page 48 www.valuetronics.com...
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Page 49: Chapter 5 Firmware Updates
Chapter 5 Firmware Updates INTRODUCTION The ML2430A Series Power Meters use a Flash EPROM to store the operat- ing program. New versions of the operating program can be installed using a personal computer connected through the Power Meter serial interface. -
Page 50: Code Loader Program
CODE LOADER PROGRAM FIRMWARE UPDATES 7. Press the softkey labeled BOOT LOAD. The LCD will display: L o a d i n g S o f t w a r e - - - - - P l e a s e W a i t 8. -
Page 51: Bootload Mode
Interface cable (ANRITSU PN B41323) or equivalent (see section 5-4). 4. Fit a jumper (ANRITSU PN 551-577) to J501 (BOOT) located to the right of the power supply on the main PCB board. This will force the Power Me- ter into the Bootload Mode when power is applied. -
Page 52: Serial Interface Cable
The 9-pin null-modem serial interface cable necessary for upgrading CABLE the ML2430A Series Power Meter firmware is available from the AN- RITSU Customer Service department. Order part number B41323. The cable can also be assembled from the following readily available... -
Page 53: Chapter 6 Troubleshooting
Chapter 6 Troubleshooting INTRODUCTION It is strongly recommend that ML2430A Series Power Meter repair be per- formed by qualified technical personnel only. The preferred ML2430A Series Power Meter service policy is the unit exchange program (see section 1-6, CAUTION page 1-3). This policy ensures minimum down time for the customer. Only... -
Page 54: Front Panel
FRONT PANEL TROUBLESHOOTING FRONT PANEL The following procedures refer to possible faults with the power meter front panel. Fault No measurement display. When External DC or line power is applied, no measurement display is seen. Recommended 1. Press the front panel ON/OFF key. If the unit now starts up, but did not Action when line power was applied, replace the PSU. - Page 55 TROUBLESHOOTING FRONT PANEL 3. If the display indicates Sensor A or B are not fitted when sensors are con- nected to the front panel Inputs A or B, replace the front panel assembly including the flexible signal channel cable. 4. Connect the sensor to another 0 dBm, 50 MHz source and verify proper operation.
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Page 56: Rear Panel
REAR PANEL TROUBLESHOOTING REAR PANEL The following procedures refer to possible faults with the power meter rear panel. Fault The power meter does not print. When a compatible printer is connected and a print is started, no printout is generated or an incorrect printout is made. Recommended 1. -
Page 57: Battery
TROUBLESHOOTING BATTERY BATTERY The following procedures refer to possible faults with the optional power me- ter battery. Fault Battery incorrectly detected or not detected, battery will not charge, or bat- tery operating time is too short. The unit will not power up when a battery is fitted. The battery status is not correct, for example, the battery type is not shown. -
Page 58: General Faults
GENERAL FAULTS TROUBLESHOOTING GENERAL FAULTS The following procedures refer to general system faults. Fault The power meter loses non-volatile memory. The power meter loses all non-volatile memory (stored setups, cal factors, cal factor tables, etc.) when powered off for more than two minutes. Recommended 1. -
Page 59: Chapter 7 Removal And Replacement Procedures
Removal and Replacement Procedures INTRODUCTION It is strongly recommend that ML2430A Series Power Meter repair be per- formed by qualified technical personnel only. The preferred ML2430A Series Power Meter service policy is the unit exchange program (see section 1-6, page 1-3), as this policy ensures minimum down time for the customer. Only... -
Page 60: Front Panel
REMOVAL AND REPLACEMENT FRONT PANEL The ML2430A Series Power Meter front panel removal instructions will vary depending upon the various connector options installed (see section 1-5, page 1-2). Complete only those steps that apply to the specific unit under repair. - Page 61 REMOVAL AND REPLACEMENT FRONT PANEL 7. On the inside of the rear panel, remove the front panel ground wire (green/yellow) from the ground stud. Rear Panel Ground Stud J607 Figure 7-2. Front Panel Ground Wire Connection to Rear Panel Ground Stud 8.
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Page 62: Power Supply
POWER SUPPLY REMOVAL AND REPLACEMENT POWER SUPPLY The PSU is mounted on top of the main PCB on four nylon standoffs. Connec- tion to the main PCB is by two 20-pin connectors. Tools Required Phillips screwdriver Procedure 1. Remove the AC or DC power cord, and the battery if fitted. 2. -
Page 63: Main Pcb
The main PCB is mounted on six pillars in the bottom case and secured by one centrally located screw. Removal of the ML2430A Series Power Meter main PCB requires removal of the PSU. The front and rear panels can be re- moved in concert with the main PCB, and detached after the assembly is clear of the case. - Page 64 MAIN PCB REMOVAL AND REPLACEMENT Replacement 1. Install the front panel (section 7-2) and rear panel (section 7-5) to the Procedure main PCB. Carefully lift the assembly and position the front panel into the case. 3. Lower the main PCB onto the positioning pillars in the bottom case. NOTE The battery spring connectors on the underside of the main PCB must mate correctly with the connectors in the...
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Page 65: Rear Panel
REMOVAL AND REPLACEMENT REAR PANEL REAR PANEL Removal of the ML2430A Series Power Meter rear panel first requires re- moval of the PSU and the main PCB. The rear panel can them be detached from the main PCB. The ML2430A Series Power Meter rear panel removal instructions will vary depending upon the various connector options installed (see section 1-5, page 1-2). - Page 66 www.valuetronics.com...
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Page 67: Chapter 8 Service Mode
Chapter 8 Service Mode INTRODUCTION It is strongly recommend that ML2430A Series Power Meter service be per- formed by qualified technical personnel only. The preferred ML2430A Series Power Meter service policy is the unit exchange program (see section 1-6, page 1-3), as this policy ensures minimum down time for the customer. -
Page 68: Sensor Service Mode
SENSOR SERVICE MODE SERVICE MODE SENSOR Pressing the SENSOR softkey selection will bring up the Service sensor SERVICE MODE menu: Service sensor menu NOTE Sensor A type MA2472A serial 970308 A single channel meter module Sensor B type No sensor fitted (ML2437A) will only show serial the Sensor A information. - Page 69 SERVICE MODE SENSOR SERVICE MODE Changing the To edit the password: Password 1. Select EDIT PASSWD. NOTE 2. Enter the old password and press Enter. The password will not be reset when a RESET or 3. Enter the new password (1 to 4 digits) and press Enter. FACTORY reset is se- lected from the front panel 4.
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Page 70: Gpib Service Commands
GPIB SERVICE COMMANDS SERVICE MODE Printing the Pressing the -more- softkey again will bring up the PRINT A (or PRINT B) EEPROM Data softkeys. Selecting one of these softkeys will print the first 2048 words of data from the selected sensor EEPROM to the currently selected attached printer. GPIB SERVICE The following GPIB service commands can be used to change or save factory COMMANDS... - Page 71 SERVICE MODE GPIB SERVICE COMMANDS Response: SERHIST #3272,<first ever serial number><serial num- bers>... All serial numbers are terminated with a null character and padded with 0xFF to 16 characters. All unused serial number positions are filled with 0xFF. The last valid serial number in the list is the current serial number.
- Page 72 www.valuetronics.com...
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Page 73: Appendix A Connector Care And Handling
INTRODUCTION This appendix provides information on the proper care and handling of RF sensor connectors. CONNECTOR ANRITSU Power Meters are high-quality, precision laboratory devices CARE AND and should receive the care and respect normally afforded such de- HANDLING vices. Follow the precautions listed below when handling or connecting these devices. - Page 74 CONNECTOR CARE AND HANDLING APPENDIX A If the measured connector is out of tolerance in the “+” region of the outer scale, the center pin is too long (see Table A-1). Mating under this condition will likely damage the precision RF component con- nector.
- Page 75 APPENDIX A CONNECTOR CARE AND HANDLING The following are some important tips on cleaning connectors: Use only denatured alcohol as a cleaning sol- vent. Do not use excessive amounts of alcohol as pro- longed drying of the connector may be required. Never put lateral pressure on the center pin of the connector.
- Page 76 www.valuetronics.com...
- Page 77 Index General Information ....1-1 GPIB ....2-3,4-3,4-5,6-4,7-7 accessories power meter ....1-2 Adobe .
- Page 78 Safety ..... 1-1 - 1-2 Scope of the Manual ....1-1 sensor care .
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