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POWER METER ML2430A SERIES MAINTENANCE MANUAL

1. Fast Charge The battery can be charged in the power meter in approximately two hours The charge control is accessed from a front panel menu The unit can not be operated while the unit is charging An external battery charger is available as an option if required 4 6 PN 10585 00003 Rev F ML2430A MM 4 13 Battery Operation Chapter 4 Theory Of Operation Battery Life Indicator When operating under battery power a battery charge indicator is displayed on the front panel LCD If the battery charge falls too low the unit will automatically power down 8 304 31v9NMANA NMOHS TINNVHO TWNOIS JOVIYSILNI SHOSN3S LN4NI ZHD A YOLOWI WO S30N343338 NOLLWegnvo NOISIOTUA YOLVH8N wo TANNVHO TWNOIS JOVAYNALNI yaga L8LZaY dsa Z TINNVHO indino JOHLNOO AXILLVS FUL IOANON YSOYWHO TOXLNOS LEVAS Aala YOLWTTISSO 30N343438 owa LNdiNO 3JOVIY3ILNI T NYd yV3y AYOW 3W Hsvla LY 3409 ONISSSIO d NIV e ol 3 2 E 833 Sn Ea ay Ez g W a w w a SMUVLS 5 1 3 5l i2 2 a ao ao S ML2430A Series Power Meter Functional Block Diagram Figure 4 1 4 7 PN 10585 00003 Rev F ML2430A OM PM MM etc 4 13 Battery Operation Chapter 4 Theory Of Operation 4 8 PN 10585 00003 Rev F ML2430A MM Chapter 5 Firmware Updates 5 1 Introduction Chapter 5 Firmware Updates 5 1 Introduct
2. Vo V Figure 2 23 34420A Volt Meter ML2430A MM PN 10585 00003 Rev F 2 17 2 7 Calibrator Power Level Chapter 2 Performance Verification 21 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 SENSOR A not fitted Figure 2 24 ML243xA Power Meter 22 Record the new number on the Agilent 34420A as V4 Vi Volts 23 While the RF is still ON press the DCV key on the 34420A and record this number as Vcomp Volts Figure 2 25 34420A Volt Meter 2 18 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 7 Calibrator Power Level 24 Use the below equation to determine Pmeas the Reference Calibrator output power in Watts Start by finding the Mismatch M then using this number along with Vo V1 Vcomp R and EE to solve for Pine as 2x Vo x V V V2 V2 comp Ems 4x Rx EEx M 2 1 r 1 4 7 1er xT Where cd rd Worst case value for M should be used in the Pmeas equation above T Reflection coefficient of the 8478B sensor found in the 8478B calibration data EE Effective Efficiency of the 8478B sensor found in the 8478B calibration data Ue Effective Efficiency uncertainty of the 8478B sensor found in the 8478B calibration data needed for uncertainty calculation in Step 15 T 0 019 Reflection coefficient of the ML243XA Reference Calibrator o
3. 0 20V can be measured via a BNC connector on the rear panel Resolution to mV level ML2430A OM PM MM etc PN 10585 00003 Rev F 4 1 4 3 General Operation Chapter 4 Theory Of Operation 4 3 General Operation The ML2430A Series Power Meter operation is controlled by a Siemens 80C165 16 bit RISC processor clocked at 20 MHz The operating program is stored in FLASH memory which can be updated through an RS232 serial link Static RAM memory is provided for storage of unit set up status when no power is applied A small lithium battery with a 10 year life span provides power to the RAM memory All unit functions including the front panel keys display power supply rear panel functions signal processing and battery operation are coordinated by the main processor Digital Signal Processor DSP A dedicated processor is used to control all signal processing including measurement timing triggering sensor interface internal channel calibration zeroing averaging and communication to the main processor The DSP receives a digital output from the signal channel ADC via a direct link At power on the main processor downloads the DSP operating program which runs a self test and confirms all hardware is operational Signal Channel There are two available signal channels one is standard and the second optional Both channels are independent allowing ratio measurements The sensor output is fed via a linear amplifier chain to the inter
4. 36 1 700 x 103 1 000 1 006 x 103 Ww 1 709x 1078 1 7094 M 0 999345 9 728 x 10 A 1 414 9 998 x 10 w 6 877 x 107 0 6877 CR 0 1 000 x 1073 1 000 1 000 x 103 w 1 000 x 108 1 0000 Combined Uncertainty uW 3 5809 Expanded Uncertainty K 2 mW 0 00716 Expanded Uncertainty K 2 0 716 2 20 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 7 Calibrator Power Level Table 2 2 The standard uncertainty of each source of uncertainty in Table 2 1 is calculated as follows 1 Vampa F5 x 000003x Veep 0 000004 x 104 V Yui 5 2 0 00003 x Vamp 0000004 x 10 ee Rx EEx 7 zy Viuw 5 x 4 2 0 00003x Vin 000004 x 10V ear EEx mp Vi Vo Vo Vi 4x R x EExM 2 V V 4x Rx al Rie x Q00006x R Q000002 x 1000 x WV EE ne rales ME ERA 7 AAA EN Mone x axr xD x e Ak 2 4x Rx EEx M 1 CR ne X 01 x 001 200000117 Combined Uncertainty Vamp nc Viuine Wua Rene EE me Meine CReinc Expanded Uncertainty K 2 2 x Combined Uncertainty x 1000 95 level of confidence Expanded Uncertainty K 2 determined from the above equations Now that you have Pmeas and Expanded Uncertainty K 2 you can calcu late lower and upper limits with the below equation P aus Paros E Pop X Expanded Uncertainty K 2 Paus LOWer mW Pru Upper ___ mW The accuracy specification for the Reference Calibrator
5. 860dB Range 3 lower 41 803dB 41 803dB Range 4 upper 41 803dB 41 803dB Range 4 lower 57 812dB 57 812dB Range 5 upper 57 812dB 57 812dB Range 5 lower 61 732dB 61 732dB 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 PN 10585 00003 Rev F 2 3 2 4 Range Data Interpretation Chapter 2 Performance Verification 2 4 Range Data Interpretation dB Error Figure The tabular data presented by the Range Calibrator consist of the values 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 Pass Fail Criteria The Range Calibrator measures the Zero level and the Upper and Lower limits of each of the five ranges both channels on a dual channel meter To calculate the dB Error Figure for each level subtract the expected level from the measured level The meter should be accepted as PASSED if it meets the following conditions applied to the error figures calculated by the above method Note that the Excel spreadsheet form provided with the ML2419A Range Calibrator can also be used to determine pass fail status Range 1 and Range 3 Absolute Error and Li
6. A Sede ea ei eo hes A ee 2 1 2 2 Test ConditionSi 04 saciid ahd a it a A id saben ea a pha dt 2 1 2 3 MPRI E iros dase PAG SAY ova sale a Bie eae alae aod Rah eta ao 2 1 2 4 Range Data Interpretation 000 cece eee 2 4 OB Error Figura ler 2 4 2 5 Range Calibrator Diagnostics 0 0 eee eee 2 5 2 6 Calibrator Frequency 0 cece eee teens 2 5 2 7 Calibrator Power Level oo 2 11 2 8 ML243xa VSWR Verification Procedure 00 0c e eee eee 2 22 Required Equipment 00 000 eee eee 2 22 Mount Resistance Measurement 2 22 Find Input Voltage Reflection Coefficients Gamma 1 and Gamma 2 M1 and P2 2 23 Finding VO V1 and Vcomp for 200 Ohms 02 00 000 cece 2 24 Finding Vo V4 and Vcomp for 100 Ohms 00 00 0002 2 24 Chapter 3 Calibration Procedures 3 1 Introduction e132 23 weet A A OR ce PASE eee 3 1 3 2 Required Test Equipment 0 naa a a aa n a a a A aaa Aa 3 1 3 3 Test Conditions nr Iria nd a Da sae Gated Swale wee ia Sa 3 1 3 4 Pre test Setup 3 1 3 5 gt DC References ici A ee A a a ea el 3 4 3 6 Calibrator Frequency aen ea a a cc a T A E E eee be ne ee 3 4 3 7 Calibrator Power Level ooo 3 6 Chapter 4 Theory Of Operation 4245 INTFOdUCION ee a sis tl a Seas 4 1 4 2 Product OvervieW o 4 1 4 3 General Operation 0 0000 eee eens 4 2 4 4 Human Interface 4 2 30SA MM PN 10585 00003 Rev F Contents
7. F 6 1 6 2 Front Panel Chapter 6 Troubleshooting Recommended Action 1 Reprogram the power meter using the bootload method described in sectio in Bootload Mode on page 5 3 2 Replace the front panel assembly 3 Replace the main PCB assembly Fault Measurement problems with Input A or Input B Problems are encountered when calibrating zeroing or making power measurements with the Power Meter on Input A or B Recommended Action 1 Remove the top cover and confirm the two flexible cables are correctly seated in J1 and J2 on the right hand side of the main PCB Note that to re seat these connectors correctly the main PCB must be removed from the lower case 2 Confirm that the flexible cable has not become disconnected from the front panel Input A and B connectors 3 If the display indicates Sensor A or B are not fitted when sensors are connected 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 If both inputs A and B perform a sensor zero but will not perform a 0 dBm calibration see Fault RF Calibrator below 5 For all other measurement problems with Input A and B replace the front panel assembly 6 If replacing the front panel assembly does not fix the problem replace the main PCB assembly Fault RF Calibrator The frequency or power level is out of specifica
8. IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WITH REGARD TO THE PRODUCT THE USER ASSUMES THE ENTIRE RISK OF USING THE PRODUCT ANY LIABILITY OF PROVIDER OR MANUFACTURER WILL BE LIMITED EXCLUSIVELY TO PRODUCT REPLACEMENT NO LIABILITY FOR CONSEQUENTIAL DAMAGES TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW IN NO EVENT SHALL ANRITSU COMPANY OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL INCIDENTAL INDIRECT OR CONSEQUENTIAL DAMAGES WHATSOEVER INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS PROFITS BUSINESS INTERRUPTION LOSS OF BUSINESS INFORMATION OR ANY OTHER PECUNIARY LOSS ARISING OUT OF THE USE OF OR INABILITY TO USE THE PRODUCT EVEN IF ANRITSU COMPANY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES BECAUSE SOME STATES AND JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES THE ABOVE LIMITATION MAY NOT APPLY TO YOU TRADEMARK ACKNOWLEDGMENTS Windows Windows XP Microsoft Paint Microsoft Word Microsoft Access Microsoft Excel Microsoft PowerPoint and Visual Studio are all registered trademarks of Microsoft Corporation Acrobat Reader is a registered trademark of Adobe Corporation MATLAB is a a registered trademark of The MathWorks Corporation NI is a trademark of the National Instruments Corporation NOTICE Anritsu Company has prepared this manual for use by Anritsu Company personnel and customers as a guide for the prope
9. Pre test Setup Chapter 3 Calibration Procedures ST p sf ESESESRIE A lefele O 7 Pee F a oft e Om E ML2430A Series Main PCB Figure 3 2 3 3 PN 10585 00003 Rev F ML2430A MM 3 5 DC Reference Chapter 3 Calibration Procedures 3 5 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 follows e Press System e Press more e Press more e Press more e Press the blank soft key to the left of the back soft key e Press the number 0 on the numeric keypad e Press the blank soft key to the left of the back soft key 4 Press CONTROL 5 Press DSP CAL 6 Press the number 1 key on the numeric keypad 7 Press Enter 8 Adjust pot R94 for a reading of 5 000V 2 mV on the DVM 3 6 Calibrator Frequency The following procedure is used to adjust the Calibrator output frequency of FREQUENCY the ML2430A Series Power Meter Equipment Required e Anritsu MF2412B Frequency Counter RF Cable with BNC male connection at one end and an N type male connection at other end e Adjustment tool Note When making adjustments to the reference calibrator output frequency make sure that the area where the following steps will be performed is ESD protected Procedure 1 If the 50 MHz calib
10. Shine a light down into the lower case and verify that the battery contacts fit into the main PCB connectors Correct alignment is most easily achieved if the front mounting pillars are correctly engaged first 4 Fully lower the PCB and ensure that the it fits onto all six mounting pillars and that the rear panel is correctly positioned The mounting pillars should be level with the top surface of the PCB Install the mounting screw with nylon washer in the center of the PCB and torque to 27 CNm 2 39 in lbs 5 Replace the PSU Power Supply on page 7 2 6 Replace the top cover Figure 3 1 on page 3 2 7 5 Rear Panel Removal of the ML2430A Series Power Meter rear panel first requires removal of the PSU and the main PCB The rear panel can them be detached from the main PCB 7 4 PN 10585 00003 Rev F ML2430A MM Chapter 7 Removal and Replacement Procedures 7 5 Rear Panel The ML2430A Series Power Meter rear panel removal instructions will vary depending upon the various connector options installed Models Options And Accessories on page 1 2 Complete only those steps that apply to the specific unit under repair Tools Required Phillips screwdriver Slotted screwdriver 3 16 nut driver 9 16 deep socket Procedure 1 Remove the AC or DC power cord and the battery if fitted 2 Remove the top cover Figure 3 1 on page 3 2 3 Remove the PSU Power Supply on page 7 2 4 Remove the main
11. after Feb 1998 B41319 Non slip Pad Foot Insert Black B41256 RF Calibrator Cable Assembly and N Connector Front Panel B41257 RF Calibrator Cable Assembly and N Connector Rear Panel 551 577 Two pin jumper for use during firmware boot loading ML2430A MM PN 10585 00003 Rev F 1 3 1 7 Spare Parts Listing Chapter 1 General Information 1 4 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 1 Introduction Chapter 2 Performance Verification 2 1 Introduction Performance of the Anritsu ML2430A Series Power Meter can be verified using the procedures in this chapter 2 2 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 All tests must be performed at a temperature of 25 C 77 F 10 C and a relative humidity of less than 75 at 40 C 104 F non condensing Prior to making any precision measurements allow the equipment to warm up for the manufactures specified time period at least 15 minutes from power on for the ML2430A or as indicated in the procedures If the power supply is interrupted for any reason allow a similar settling period 2 3 Input Range The Anritsu ML2419A Range Calibrator is required for this procedure as it provides a traceable series of voltages to facilitate accuracy measurements for the po
12. consequent degradation in performance Table A 1 Allowable Mating Connector Pin Depth Testy Port Connector Type Pin Depth Inches Pin Depth Gauge Reading N Male 0 207 0 000 tolerance 0 003 0 207 0 000 tolerance 0 003 K Male 0 000 K Female 0 002 Same as Pin Depth V Male 0 000 V Female 0 002 Avoid Over Torquing Connectors Over torquing connectors may damage the connector center pin Finger tight is usually sufficient for Type N connectors Always use a connector torque wrench 8 inch pounds when tightening K or V type connectors Never use pliers to tighten connectors Cleaning Connectors The precise geometry that makes possible the RF component s high performance can easily be disturbed by dirt and other contamination adhering to the connector interfaces To clean the connector interfaces use a clean cotton swab that has been dampened with denatured alcohol Most cotton swabs are too large to fit in the smaller connector types In these cases it is necessary to peel off most of the cotton and then twist the remaining cotton tight Be sure that the remaining cotton does not get stuck in the connector Cotton swabs of the appropriate size can be purchased through a medical laboratory type supply center Note A 2 PN 10585 00003 Rev F ML2430A MM Appendix A Connector Care and Handling A 2 Connector Care And Handling The following are some important tips on cleaning con
13. of 25 C 77 F 5 C and a relative humidity of less than 75 non condensing Procedures in this and the following sections should be performed by qualified technical Caution personnel only These procedures require access to internal test points and adjustment pots and care should be taken to avoid contact with potentially hazardous voltages 3 4 Pre test Setup Some of the procedures in this chapter require removal of the instrument s top cover to gain access to adjustment points With power disconnected open the unit by loosening the six captive screws on the underside see Figure 3 1 and separating the top half of the case from the base Ensure that the front and rear panels remain firmly in place during this operation ML2430A MM PN 10585 00003 Rev F 3 1 3 4 Pre test Setup Chapter 3 Calibration Procedures Apply power to the unit using the AC inlet on the rear panel and verify that the meter has completed the Power On Self Test POST Prior to making any precision measurements allow the Power Meter to warm up for a period of 15 minutes from power on If the power supply is interrupted for any reason allow a similar settling period Refer to the Main PCB drawing Figure 3 2 for the location of test points and components z Ei Q e O O 2 LOOSEN THESE SCREWS LOOSEN THESE SCREWS Figure 3 1 ML2430A Series Top Cover Removal 3 2 PN 10585 00003 Rev F ML2430A MM 3 4
14. on and the MF2412B frequency counter should be reading the frequency of the Calibrator output Record the frequency below Emeas 2 MHz 2 10 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 7 Calibrator Power Level Calibrator Frequency Uncertainty The sources of uncertainties of the frequency counter measurement at 50 MHz include e One Count Least significant digits LSD of the frequency counter Time base accuracy from either of the following GPS Disciplined Oscillator e MF2412B Frequency Counter e Residual error of the frequency counter Normal Mode Measurement Frequency 1x1010 Fast Mode Measurement Frequency 2x109 Use the following equation to determine the expanded measurement uncertainty UF with coverage factor K 2 95 level of confidence For the MF2412B use the following numbers to determine UF e lcount 1 Time base accuracy for the MF2412 e TBA 7 5x10 8 with option 1 TBA 4 5x10 8 with option 2 e TBA 1 5x10 8 with option 3 e Measurement Frequency F neas Frequency reading from the MF2412B in Hz e Residual Error ERR E ee ET U 2 a Us x TBA ERR U Hz Verify the frequency of the calibrator F meas Up is within the range of 50 MHz 10 kHz If the frequency is outside the 50 MHz 10 kHz limits then proceed to the Calibrator Frequency calibration procedure in Chapter 3 2 7 Calibrator Power Level The following
15. output power level is 1 mW 0 012 mW mW per year The maximum permissible error for the power output level Pactual should be within the range of 1 mW 0 0015 mW mW for example 0 9985 mW to 1 0015 mW If Pactual is outside of the 1 mW 0 0015 mW mW limit then continue to the Calibrator Power Level calibration procedure in Chapter 3 ML2430A MM PN 10585 00003 Rev F 2 21 2 8 2 8 ML243xa VSWR Verification Procedure Chapter 2 Performance Verification ML243xa VSWR Verification Procedure Required Equipment Agilent 34401A Multimeter Agilent 432A Analog Power Meter Agilent 34420A Nano Volt Micro Ohm Meter Agilent 8478B Thermistor Power Sensor MS2024B VNA Master Procedure Make copy of the logsheet provided in Table 2 3 to use when recording the following measurements Mount Resistance Measurement 1 With Agilent 432A power meter off set the mount resistance switch to 200 ohms 2 Connect the Multimeter between the center pin of the BNC VRF connector on the rear panel of the Agilent 432A see Figure 2 26 to pin 1 on the thermistor mount end of the sensor cable See Figure 2 27 Center Pin of Vrr A Figure 2 26 Agilent 432A 2 22 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 8 ML243xa VSWR Verification Procedure Figure 2 27 Pin One of Sensor Cable 3 Record the resistance as R1 Value should be approximately 200 ohms 4 Set the Agil
16. particular measurement From the top level menu press more and DIAGS When the Diagnostics option is selected the SENSOR LEVEL and ZERO soft keys become available Range Calibrator Diagnostics Sensor A Level Range 1 upper 6 990 as SENSOR LEVEL ZERO exit Figure 2 5 Diagnostics Mode Menu SENSOR Toggles the display to show the measurements for each channel If only one channel is connected the SENSOR soft key shown in Figure 2 5 will not be displayed LEVEL Selects the level to be verified ZERO The selected sensor input is zeroed When a SENSOR and LEVEL are selected the range calibrator outputs the required signal to the appropriate sensor input on the meter and the meter continuously measures it The reading obtained for a particular range should be the same as when the full set of tests were run To obtain an accurate measurement it is important to ZERO at each selection of SENSOR and LEVEL 2 6 Calibrator Frequency The following procedure is used to measure the Calibrator output frequency of the ML2430A Series Power Meter Equipment Required e Anritsu MF2412B Frequency Counter or equivalent RF Cable with BNC male connection at one end and an N type male connection at other end Procedure 1 Power on the ML243xA and MF2412B Allow to warm up for 15 minutes before taking any measurements ML2430A MM PN 10585 00003 Rev F 2 5 2 6 Calibrator Frequency Chapter 2 Performance Verif
17. the SERVICE MODE following key press sequence 1 On the Power Meter front panel press e System e more e more e more 2 Press the blank softkey just to the left of the back softkey 3 Press the 0 key on the numeric keypad 4 Press the blank softkey just to the left of the back softkey The service menu will be displayed as shown below Service menu service SENSOR BOOTLOAD firmware CONTROL SENSOR BOOTLOAD CONTROL Figure 8 1 Sensor Service Mode The SENSOR service mode is detailed in the following section of this chapter BOOTLOAD mode is covered in Chapter 5 and the CONTROL mode is used in manufacturing and not required by service personnel ML2430A MM PN 10585 00003 Rev F 8 1 8 3 Sensor Mode Chapter 8 Service Mode 8 3 Sensor Mode Pressing the SENSOR softkey selection will bring up the Service sensor SERVICE MODE menu Note A single channel meter ML2437A will only show the Sensor A information Service sensor menu SensorA type MA2472A serial 970308 module Sensor B type No sensor fitted serial module PASSWORD Figure 8 2 Service Sensor Password Entering the Password The example display above shows an ML2438A dual channel meter with an MA2472A power sensor connected to input A and no sensor connected to input B A single channel meter ML2437A will only show the Sensor A information The sensor serial number and other parameters are protected by
18. up for 15 minutes before taking any measurements 2 14 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 7 Calibrator Power Level 14 On the front panel of the 432A power meter set the mount resistance to 200 Q page Figure 2 18 432A Power Meter 15 On the front panel of the 432A power meter set the calibration factor to 100 Jas 4 du 7 ct Figure 2 19 432A Power Meter 16 6 After the 432A and 34420A have warmed up for 15 minutes perform a zero of the 432A power meter according to the instructions listed in the 432A user manual ML2430A MM PN 10585 00003 Rev F 2 15 2 7 Calibrator Power Level Chapter 2 Performance Verification 17 On the front panel of the 432A power meter set the Range to 0 dBm TA Figure 2 20 432A Power Meter 18 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 If it shows RF ON then press it once to show RF OFF Figure 2 21 ML243xA Power Meter 2 16 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 7 Calibrator Power Level 19 Connect the 8478B power sensor to the ML243xA Calibrator Figure 2 22 ML243xA and 432A Power Meters and 34420A Volt Meter 20 Select DCV 1 2 on the Agilent 34420A Record the number shown in the display of the 34420A as Vo
19. 1 Table of Contents Continued 425 GRIB Operation 5 s 20 id eos es BAe he Ad oid ba ii 4 2 ASG OR anata ah earn uate RNA 4 2 4 7 Case Construction siei rae Pa ia ae i a a EE eee eee 4 3 4 8 Internal Construction 2 25 4 5d d4 0la ardid ada a eo edad ole 4 3 4 93 Front Panels mespre wave idee tee Ree a Hike A a Gade bare wee Mente Rae hae 4 4 4 10 Front Panel Connectors n saasaa 0000 0 cece teeta 4 4 4 11 Rear Panel Connectors 0 0000 ccc eee eee eee 4 4 4 12 Power Supply Operation 000 cece teeta 4 5 4 13 Battery Operation eee pots eri ee pa ee ee nee eee eee beeen 4 6 Chapter 5 Firmware Updates Hed SINTFOPUCHION 4 inlet ies ate oe thd chun aes haha SEM Sk are NS 5 1 5 2 Code loader a tt teed eee bah had Bebe ee eke ae ed a 5 1 5 3 Bootload MOde s 0 42 as oe eee cee Daren ced ae we ead Raa eae a oe eae 5 3 5 4 Serial Interfa e Cable neoane aiae niaan eia i a ia a e eee 5 4 Chapter 6 Troubleshooting 6 1 Introduction ics ade A BN te oh ek es A eh es 6 1 6 2 Front Panel 41 ieee a ee ee ee ae oe ee CE Ged Be 6 1 6 37 Rear Panel nai tare ta cp als dine ot Ele ety da dd 6 3 6 4 Battery io ad ap Salted ater des Sie eG ale ey e S 6 4 6 5 General Faults iio o eek eae Reid a Me ed ele Mee Be eat hice bb 6 5 Chapter 7 Removal and Replacement Procedures TEA A dP dtd a e ia a p Rade dee dud Dade ee ane eel ee ekg a 7 1 22 pront Panel RO 7 1 Tools Re
20. 30A Series Power Meter main PCB requires removal of the PSU The front and rear panels can be removed in concert with the main PCB and detached after the assembly is clear of the case Tools Required e Phillips screwdriver Removal Procedure 1 Remove the AC or DC power cord and the battery if fitted 2 Remove the top cover Figure 3 1 on page 3 2 3 Remove the PSU Figure 7 3 ML2430A MM PN 10585 00003 Rev F 7 3 7 5 Rear Panel Chapter 7 Removal and Replacement Procedures 4 Remove the Phillips screw and nylon washer that secures the main PCB to the bottom case Main PCB Mounting Screw Figure 7 4 Main PCB Mounting Screw 5 Carefully lift the main PCB with front and rear panels attached straight up and clear of the bottom case 6 Remove the front panel Front Panel on page 7 1 and rear panel Rear Panel on page 7 4 as required Replacement Procedure 1 Install the front panel Front Panel on page 7 1 and rear panel Rear Panel on page 7 4 to the Procedure main PCB 2 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 The battery spring connectors on the underside of the main PCB must mate correctly with the connectors in the bottom case Confirm that the battery connectors are correctly aligned by half Note lifting the front panel out on the left hand side of the bottom case
21. 3xa VSWR Verification Procedure Table 2 3 Test Results Measurement Measured Value Expected Approximate Value Ri 200 ohms R2 100 ohms E 0 Pa 0 33 Vo_200 lt 400 pV V4_100 80 mV Vcomp200 5V Vo_100 lt 100 mV V4_100 lt 100 mV Veomp100 4 3V P200 P400 M Ts P 2 Veomp200 V1z00 Vozoo Vor0 UIN j 200 ARG Calculate P100 2 Veomp100 Vi 100 Vor00 T Voro0 Vro 4R Pico Calculate M _ Poo0 1 212 Proo 1 11 17 ML2430A MM PN 10585 00003 Rev F 2 25 2 8 ML243xa VSWR Verification Procedure Chapter 2 Performance Verification Calculate F p 205 1M 12D y Irl 2111M A T M al M 1 2 1K 12M 112192 One of the two numbers from the above equation should be a number between 1 and 1 This will be the correct number to use in the below equation to get a VSWR value greater than 1 Calculate VSWR IID VSWR _ 1 ITs Verify the calculated VSWR is less than 1 04 2 26 PN 10585 00003 Rev F ML2430A MM Chapter 3 Calibration Procedures 3 1 Introduction Chapter 3 Calibration Procedures 3 1 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 a
22. Maintenance Manual POWER METER ML2430A SERIES MAINTENANCE MANUAL Anritsu Anritsu Company Part Number 10585 00003 490 Jarvis Drive Revision F Morgan Hill CA 95037 2809 Published January 2014 USA Copyright 2014 Anritsu Company 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 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 Accessories included with this product are not included in the standard warranty LIMITATION OF WARRANTY The foregoing warranty does not apply to Anritsu connectors that have failed due to normal wear Also the warranty does not apply to defects resulting from improper or inadequate maintenance unauthorized modification or misuse or operation outside of the environmental specifications of the product No other warranty is expressed or implied and the remedies provided herein are the Buyer s sole and exclusive remedies DISCLAIMER OF WARRANTY DISCLAIMER OF WARRANTIES TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW ANRITSU COMPANY AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO
23. PCB with the front and rear panels attached Main Pcb on page 7 3 5 Disconnect the rear panel Sensor Input A flex cable from J1 on the main PCB 6 Disconnect the rear panel Sensor Input B flex cable from J2 on the main PCB 7 Disconnect the rear panel RF Calibrator cable assembly from J400 on the main PCB 8 On the inside of the rear panel remove the front panel and AC input module ground wires green yellow 10 11 12 13 from the ground stud Remove the BNC connector nuts using the 9 16 deep socket Remove the jack screws from the RS232 parallel printer and GPIB connectors Retain all hardware for reuse Remove the rear panel Remove the AC input module if necessary Replacement is the opposite of removal ML2430A MM PN 10585 00003 Rev F 7 5 7 5 Rear Panel Chapter 7 Removal and Replacement Procedures 7 6 PN 10585 00003 Rev F ML2430A MM Chapter 8 Service Mode 8 1 Introduction Chapter 8 Service Mode 8 1 Introduction It is strongly recommend that ML2430A Series Power Meter service be performed by qualified technical personnel only The preferred ML2430A Series Power Meter service policy is the unit exchange program Service Policy on page 1 2 as this policy ensures minimum down time for the customer This chapter describes the use of the Service Mode menus and GPIB commands 8 2 Accessing Service Mode The service mode is accessed through the System front panel key using
24. a password The default password is 1234 To enter the password 1 Select the PASSWORD softkey 2 Enter the current numeric password 3 Press the PASSWORD softkey again 8 2 PN 10585 00003 Rev F ML2430A MM Chapter 8 Service Mode 8 3 Sensor Mode This will bring up the Service sensor menu with the EDIT A EDIT B and EDIT PASSWD options Pressing the more key will bring up the FACTOR A FACTOR B PRINT A and PRINT B options Service sensor menu SensorA type MA2472A serial 970308 module Sensor B type MA2472A serial 970310 module EDITA EDIT B EDIT PASSWD more Figure 8 3 Service Sensor Edit Menu Changing the Password To edit the password 1 Select EDIT PASSWD The password will not be reset when a RESET or FACTORY reset is selected from the front Mote panel System menu or through the GPIB commands RST or FRST 2 Enter the old password and press Enter 3 Enter the new password 1 to 4 digits and press Enter 4 Enter the new password again to confirm and press Enter The CLR key on the numeric keypad will clear the current entry The Abort softkey will abort the password changing process and exit this menu Sensor Serial Number To edit the sensor serial number e Select EDIT A or EDIT B if appropriate Enter the new sensor serial number using the front panel numeric keypad Press Delete to delete entries Enter to accept the new serial number or Cancel to quit with
25. and LVD directive of the European Union EU C tick Conformity Marking Anritsu affixes the C tick marking onto its conforming products in accordance with the electromagnetic compliance regulations of Australia and New Zealand in order to indicate that these products conform to the EMC regulations of Australia and New Zealand ON274 Mercury Notification This product uses an LCD backlight lamp that contains mercury Disposal may be regulated due to environmental considerations Please contact your local authorities or within the United States the Electronics Industries Alliance www eiae org for disposal or recycling information Front 4 PN 10585 00003 Rev F ML2430A MM Table of Contents Chapter 1 General Information 1 1 Scope Of This Manual 0 0000 c eee 1 1 152 INtrOdUCHON 02 25 4482 244 crdbaaiaceS a dd Mad tt Medd al 1 1 123 Related Manlals costal cine ase fle a ale ae abs pak e fa A Sa diss ae E 1 1 1 4 Identification Number 0000 tee ee 1 1 1 5 Models Options And AccessorieS 0 0 0 0 nnana anaana eee eee eens 1 2 TEO lt SOMVICEPOliC Wie sok a dd ds ad de be 1 2 Unit Exchange Poly se rerik reris heb iad ioe hag tans io Mette eink hase a ies 1 2 Spares KItProgram a4 ar nea wedded a ode eed placed have 1 3 17 Spare Pattts ISting tutti ssl capil Rahs pe doa gue ate SRY Kaha eigenen a esas GAN E 1 3 Chapter 2 Performance Verification 221 introduction ita oe ie
26. are And Handling 0 0 0 0 eee te eae A 1 Beware of Destructive Pin Depth of Mating Connectors 0 000 eee eee eee A 1 Avoid Over Torquing Connectors 0 0 0 0 eee A 2 Cleaning Connectors orea is resa a e nett A 2 ML2430A MM PN 10585 00003 Rev F Contents 3 Contents 4 PN 10585 00003 Rev F ML2430A MM 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 information carefully before operating the equipment Symbols Used in Manuals Danger This indicates a risk from a very dangerous condition or procedure that could result in serious injury or death and possible loss related to equipment malfunction Follow all precautions and procedures to minimize this risk Warning This indicates a risk from a hazardous condition or procedure that could result in A light to severe injury or loss related to equipment malfunction Follow all precautions WARNING and procedures to minimize this risk Caution This indicates a risk from a hazardous procedure that could result in loss related to equipment malfunction Follow all precautions and procedures to minimize this risk Safety Symbols Used on Equipment and in Manuals The following safety symbols are used inside or on the equipment near operation locations to provide infor
27. are entered using the same format as the GPIB interface 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 BNC I O Ports There are four BNC connectors mounted on the rear panel Two are multi function outputs and two are inputs Printer Port A PC standard 25 pin D connector provides an interface to a standard parallel printer Compatible printers include the HP 340 Deskjet and most other 300 and 500 Series HP Deskjet printers and the Canon BJC80 Many desk top Centronics printers are also compatible Full data print outs are available in all measurement modes 4 12 Power Supply Operation This section describes the ML2430A Series Power Meter power supply operation Auto Sequencing The power supply automatically determines what types of power are available and then configures itself to use the most suitable This sensing is fully automatic and requires no action by the operator If more than one type of power is connected and the one being used is interrupted the PSU will automatically switch to the next available power source Early power meters will reset and restart when switching from line or external DC to battery power If the power is restored the PSU automatically stops using the battery Supply Priori
28. ce the product of the reflection coefficient of the 8478B Gd and the reflection coefficient of the ML243XA Reference Calibrator Gs The uncertainty of connector repeatability CR is set to 0 1 for example 60 dB for precision connectors The sensitivity Cix of each source of uncertainty except for connector repeatability CR is the first partial derivative of the P neas equation with respect to the uncertainty source variable The equation below shows how the sensitivity of Vcomp and Civeomp 18 obtained E o d IP __ d 2x Vamp x Vi Vo Vo V1 2x V V amp gy Wimesi gy 4x Rx EExM Far EEx M comp comp Taking the partial first derivative of Pmeas With respect to the variable uncertainty source needs to be done to obtain sensitivity C for the rest of the uncertainty except for connector repeatability CR which has a sensitivity set to 0 001 W Table 2 1 Uncertainty Calculation of an ML243XA Reference Calibrator Output Power Level Sources of Units Readings Uncertainty Units Divisor Sensitivity Units Standard Standard Uncertainty Uncertainty Uncertainty w uW Veomp V 5 1627784 1 949 x 10 V 1 732 1 950 x 10 V Q 2 194 x 10 0 0219 Vo V 0 0009813 2 756 x 10 V 1 732 1 300 x 10 V Q 2 068 x 10 2 0680 V4 v1 0 0784392 2 756 x 10 V 1 732 1 280 x 107 V Q 2 037 x 10 2 0369 R Q 200 1 400 x 102 Q 1 732 4 996 x 108 W Q 4 038 x 108 0 0404 EE E 99
29. ded power outlet If a grounded 3 pin outlet is not available use a conversion adapter and ground the green wire or or connect the frame ground on the rear panel of the equipment to ground If power is supplied without grounding the equipment there is a risk of receiving a severe or fatal electric shock Warning WARNING This equipment can not be repaired by the operator Do not attempt to remove the equipment covers or to disassemble internal components Only qualified service technicians with a knowledge of electrical fire and shock hazards should service this equipment There are high voltage parts in this equipment presenting a risk of severe injury or fatal electric shock to untrained personnel In addition there is a risk of damage to precision components Caution des Electrostatic Discharge ESD can damage the highly sensitive circuits in the instrument ESD is most likely to occur as test devices are being connected to or disconnected from the instrument s front and rear panel ports and connectors You can protect the instrument and test devices by wearing a static discharge wristband Alternatively you can ground yourself to discharge any static charge by touching the outer chassis of the grounded instrument before touching the instrument s front and rear panel ports and connectors Avoid touching the test port center conductors unless you are properly grounded and have eliminated the possibility of sta
30. djustments are made to the internal DC reference and the RF calibrator Procedures in this section should be performed by qualified technical personnel only These Note procedures require access to internal test points and adjustment potentiometers and care should be taken to avoid contact with potentially hazardous voltages 3 2 Required Test Equipment The following test equipment is required to perform the procedures in this chapter e Anritsu MF2412B Frequency Counter e Agilent 432A Analog Power Meter e Agilent 34420A Nano Volt Micro Ohm Meter or equivalent Insure that the Agilent 34420A Meter is warmed up for two hours prior to use e Agilent 8478B Power Sensor The calibration data including measurement uncertainty for the Agilent 8478B must be available to obtain the reflection coefficient and effective efficiency RF Cable with BNC male connection at one end and an N type male connection at other end e Adjustment tools flat head and hex screwdrivers Ensure all test equipment is within its calibration period and is traceable to national standards Note An example of traceable national standards is NIST or through an internationally recognized accredited laboratory 3 3 Test Conditions The ML2430A Series Power Meter must be operated under controlled conditions of temperature and humidity in order to meet its specified precision and stability All tests should ideally be performed at a temperature
31. e Calibrator output power level is outside of the 1 mW 0 0015 mW limits adjust R409 and recalculate Pactual Upper and Pactual Lower with the new Vo Vj and Voomp numbers using the same equations in the previous section 2 Continue doing the previous step until Pactya Lower are Upper and P ctua both within specification Me l Mo amn anns S P 6 WENNNNITE app gaia dad Figure 3 4 R409 Adjustment If a metal adjustment tool is used it must be removed from the varistor R409 before reading the Note counter as the metal tool could affect the frequency 3 6 PN 10585 00003 Rev F ML2430A MM Chapter 4 Theory Of Operation 4 1 Introduction Chapter 4 Theory Of Operation 4 1 Introduction This chapter contains a general theory of operation and an operational block diagram for the ML2430A Series Power Meter 4 2 Product Overview The ML2430A Series Power Meter is a light weight portable instrument featuring high accuracy and fast measurement speeds The large front panel LCD provides a simultaneous two channel readout with an available graphical display of pulse power measurements Measurement Channels The ML2437A Power Meter features a single measurement channel The ML2438A Power Meter adds an optional second measurement channel Each channel has a linear amplifier chain coupled to a DSP Digital Signal Processor via an ADC Analogue to Digital Converter Each channel has a d
32. ed correctly If the battery status is not shown on the front panel display but the unit does operate with the battery there is a failure of the intelligent link to the battery Confirm that the battery contacts on the lower case are mated correctly with the PCB connector as described above If the battery case connections are correct and the battery is charged but the unit still does not operate correctly replace the PSU If the battery case connections are correct the battery is charged and the PSU has been replaced but the unit still does not operate correctly replace the main PCB 6 If a battery will not charge replace the battery PSU or main PCB in that order 7 If the battery operating time is too short confirm that after charging the battery status indicates at least 80 charged If not discharge the battery and recharge the battery fully five times If the battery does not recover after this conditioning process replace it To extend battery operation time turn the backlight off during use 6 4 PN 10585 00003 Rev F ML2430A MM Chapter 6 Troubleshooting 6 5 General Faults 6 5 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 Action 1 Confirm the jumper is
33. el The rear panel is made from sheet aluminum and contains the ground stud line power input module printer output connector RS232 I O connector GPIB connector four BNC I O connectors and the external DC Input connector The rear panel is attached to the main PCB and fits into slots in the top and bottom cases Handle and Rack Mount An optional handle can be fitted using the two circular mounting points on each side of the unit A special top and bottom case are available to provide rack mounting capability 4 8 Internal Construction The ML2430A Series Power Meter contains the main PCB the power supply unit and the battery compartment Main PCB The main PCB is thicker than normally required in order to add strength to the unit construction The multi layer PC board is 95 surface mount with some components through hole mounted One common PCB is used for the ML2438A dual channel and ML2437A single channel units For the ML2437A components are omitted from the PCB The board is mounted on six pillars in the bottom case and secured by one centrally located screw Power Supply The power supply unit is mounted on top of the main PCB on four nylon standoffs Connection to the main PCB is by two 20 pin connectors Line power is fed through an input filter module mounted on the rear panel The heat sink of the PSU has thermal conductive material that contacts a heat spreader mounted on the underside of the top case Battery Compar
34. ent 432A mount resistance switch to 100 ohms 5 Record the resistance as R2 Value should be approximately 100 ohms Find Input Voltage Reflection Coefficients Gamma 1 and Gamma 2 T1 and 12 6 Connect the thermistor to the sensor cable of the Agilent 432A 7 Set the mount resistance to 200 ohms 8 Connect the micro volt meter to the Agilent 432A 9 Power on the Agilent 432A and 34420A 10 Connect the thermistor to a calibrated VNA and measure the VSWR at 50 MHz Record this value as 11 Calculate T 1 e TIZ VSWR 200 VSWR_200 1 T1 should be number near zero 12 Record 1 13 Change mount resistance on Agilent 432A to 100 ohms and measure the VSWR at 50 MHz Record this value as VSWR op 14 Calculate T2 e T2 VSWR100 1 VSWR100 1 e T2 should be a number near 0 33 15 Record T2 ML2430A MM PN 10585 00003 Rev F 2 23 2 8 ML243xa VSWR Verification Procedure Chapter 2 Performance Verification Finding Vo V and Vcomp for 200 Ohms 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Connect the thermistor to the RF Calibrator of ML243xA Ensure the RF Calibrator is off Set the Agilent 432A mount resistance to 200 ohms Set the Agilent 432A Range switch to Coarse Zero Adjust the front panel Coarse Zero control to obtain a zero meter indication Set the Agilent 432A Range switch to 1 mW Fine zero the Agilent 432A by pressing down the fine zero switch and hold for 2 seconds t
35. er supply on the main PCB board This will force the Power Meter into the Bootload Mode when power is applied 5 Apply AC power to the Power Meter 6 Go to Step 8 of the Running the Program instructions Running the Program on page 5 1 and load the program as described 7 Remove power from the meter and remove the jumper 8 Replace the top cover taking care not to over tighten the captive screws 9 Replace the battery if so equipped ML2430A MM PN 10585 00003 Rev F 5 3 5 4 Serial Interface Cable Chapter 5 Firmware Updates 5 4 Serial Interface Cable The 9 pin null modem serial interface cable necessary for upgrading 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 components e 2 meters of 8 conductor cable ANRITSU PN 800 365 e 2 each 9 pin female D connectors Assemble the cable according to the following connection diagram and description CONNECTOR 1 CONNECTOR 2 ORANGE 2 2 RED RED 3 X 3 ORANGE BROWN 4 MA 4 YELLOW YELLOW 6 j BROWN 6 BLUE 7 7 WHITE WHITE 8 OK 8 BLUE GREEN 5 5 GREEN CABLE SHIELD gt 5 Figure 5 1 Connection Diagram Description Connector 1 pin 2 connected to pin 3 on connector 2 Connector 1 pin 3 connected to pin 2 on connector 2 Connector 1 pin 4 connected to pin 6 on connector 2 Connector 1
36. es of GPIB operation ML24XXA Native mode HP 436A emulation mode HP 437B mode HP 488A mode and ML4803 mode GPIB is not available when the unit is battery powered due to the high power requirement of the GPIB IC 4 6 Printer The ML2430A Series Power Meter is equipped with a standard parallel printer interface Compatible printers include the HP 340 Deskjet and most other 300 and 500 Series HP Deskjet printers and the Canon BJC80 Many desk top Centronics printers are also compatible Data print outs are available in all measurement modes 4 2 PN 10585 00003 Rev F ML2430A MM Chapter 4 Theory Of Operation 4 7 Case Construction 4 7 Case Construction The ML2430A Series Power Meter has a clam shell case structure The top and bottom covers are of a rugged molded plastic construction The top case has raised slots which align with the feet of the bottom case to allow unit stacking The front and rear panels are fitted into slots in the top and bottom cases The bottom case features a battery compartment with a cover plate secured with two quarter turn fasteners Front Panel The front panel assembly is made up of a conductive contact rubber key pad sandwiched between the molded plastic front panel and the LCD PCB assembly Depending upon the option configuration selected the front panel may contain the signal channel input connectors and the RF calibrator reference output Connection to the main PCB is by ribbon cable Rear Pan
37. fitted to J500 on the two pins nearest the on board Action Lithium battery the RUN position as silkscreened on the PCB 2 Measure the DC voltage of the Lithium battery mounted to the center of the main PCB This battery should measure 3 7V If the voltage is less than 3 5V replace the battery or the main PCB Fault The buzzer does not sound The noise generator does not make any sound or the sound is too low Recommended Action 1 Reset the unit to the factory defaults and try again 2 Replace the main PCB ML2430A MM PN 10585 00003 Rev F 6 5 6 5 General Faults Chapter 6 Troubleshooting 6 6 PN 10585 00003 Rev F ML2430A MM Chapter 7 Removal and Replacement Procedures 7 1 Introduction Chapter 7 Removal and Replacement Procedures 7 1 Introduction It is strongly recommend that ML2430A Series Power Meter repair be performed by qualified technical personnel only The preferred ML2430A Series Power Meter service policy is the unit exchange program Service Policy on page 1 2 as this policy ensures minimum down time for the customer Only when the unit exchange method is not possible should the removal and replacement procedures described in this chapter be used Always verify the need for a component replacement using the troubleshooting guidelines presented in Chapter 6 Troubleshooting Repair or replacement in the field to a level beyond the subassemblies listed in this chapter is not recomme
38. hen release back to the original position Press the DCV1 2 button on the Agilent 34420A Record this reading as Vo 200 V _200 should be less than 400 pV On the ML248xA turn the RF Calibrator on Record the Agilent 34420A reading as V1 200 Vi_200 Should be approximately 80 mV On the ML243xA turn the RF Calibrator off Press the DCV button on the Agilent 34420A and record this value as Veomp 200 Veomp_200 Should be approximately 5 volts Finding Vo V4 and Vcomp for 100 Ohms 31 32 33 34 35 36 37 38 39 Set the Range on the Agilent 432A from 1 mW to 10 mW Switch the mount resistance from 200 ohms to 100 ohms Set the Range back to 1 mW Press the DCV 1 2 button on the Agilent 34420A and record the value as Vo 100 On the ML243xA turn the RF Calibrator on Record the Agilent 34420A reading as V1 _ 309 On the ML243xA turn the RF Calibrator off Press the DCV button on the micro voltmeter and record this value as Veomp 100 Weomp_100 Should be approximately 4 3 volts All measurements are now recorded Use the equations on the Test Results page to determine the VSWR of the Anritsu RF Calibrator port Note Due to the complexity of the equations it s a good idea to create a spreadsheet for example MS Excel where the collected values can be entered and the spreadsheet will then calculate the VSWR 2 24 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 8 ML24
39. ical personnel only These Caution procedures may require access to internal components and care should be taken to avoid contact with potentially hazardous voltages 6 2 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 Action 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 2 If the unit has recently been reprogrammed remove the top cover Figure 3 1 on page 3 2 and confirm that the jumper at J501 has been removed If not remove the jumper and reapply power 3 If the unit still does not start up remove the top cover and measure the voltage on the PSU connector PL1 pins 15 to 14 gnd Confirm a reading of 5 25V 160 mV If no voltage is present replace the PSU 4 If the 5V is present reprogram the power meter using the bootload method described in Bootload Mode on page 5 3 5 If the unit still fails to start replace the front panel assembly 6 If the unit still fails to start replace the main PCB Fault Front Panel display is working but the buttons are not working The front panel LCD operates normally during start up and displays a normal measurement display but one or all of the front panel buttons do not work ML2430A MM PN 10585 00003 Rev
40. ication 2 On the MF2412B press the Preset key T Figure 2 6 MF2412B 3 On the MF2412B press the Input key also the number 0 key UL Figure 2 7 MF2412B 2 6 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 6 Calibrator Frequency 4 On the MF2412B press the Left Arrow key to highlight Input CH area Figure 2 8 MF2412B 5 On the MF2412B press the Enter key until Input 2 is selected Figure 2 9 MF2412B ML2430A MM PN 10585 00003 Rev F 2 7 2 6 Calibrator Frequency Chapter 2 Performance Verification 6 On the MF2412B press the Right Arrow key to highlight the Impd2 area Figure 2 10 MF2412B 7 On the MF2412B press the Enter key until 50 Q is selected Figure 2 11 MF2412B 2 8 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 6 Calibrator Frequency 8 On the MF2412B press the Return to Meas key Figure 2 12 MF2412B ML2430A MM PN 10585 00003 Rev F 2 9 2 6 Calibrator Frequency Chapter 2 Performance Verification 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 11 Now the ML243xA Calibrator output should be turned
41. ion The ML2430A Series Power Meters use a Flash EPROM to store the operating program New versions of the operating program can be installed using a personal computer connected through the Power Meter serial interface Firmware updates are available on disk part number 2300 283 from your nearest ANRITSU Customer Service Center This chapter describes the use of the Code Loader Program and the configuration of the required RS232 cable 5 2 Code Loader The Power Meter Code Loader Program is a DOS based program used to PROGRAM transfer updated firmware into the Power Meter EPROM The Power Meter Code Loader program requires about 1 Mb of hard drive space Installation 1 On the personal computer hard drive create a directory to contain the Code Loader Program files ML2430A for example 2 Copy the BOOT EXE file from the Code Loader Program floppy disk into this directory 3 From within the designated directory type BOOT This will unzip the Code Loader Program files into the above designated directory There will be seven files including the original BOOT EXE The installation on the personal computer is now complete Running the Program 1 Connect the personal computer serial COM port to the ML2430A Series Program Power Meter back panel RS232 Serial Connector using the ANRITSU Serial Interface cable PN B41323 or equivalent Serial Interface Cable on page 5 4 N Apply power to the Power Meter and allow it to com
42. irst 2048 words of data from the selected sensor EEPROM to the currently selected attached printer 8 4 GPIB Service The following GPIB service commands can be used to change or save factory COMMANDS cal factor data and to output the instrument serial number history CFFCHG Change factory cal factor values Syntax CFFCHG lt password gt lt sensor gt lt frequency gt suffix lt cal factor gt lt units gt password Password for the Service mode sensor edit control sensor A or B frequency A Factory table frequency entry suffix MHz or GHz cal factor The new cal factor value for the factory frequency entry units or DB Remarks This command will change the cal factor value for a frequency entry in the factory cal factor table Cal factors once entered will be available for use by the DSP They will NOT be saved to the Warning sensor though until the save command CFFSAV is executed If the sensor is changed or power is lost before saving then all changes since the last save will be lost CFFSAV Save the changed factory cal factor table Syntax CFFSAV lt password gt lt sensor gt 8 4 PN 10585 00003 Rev F ML2430A MM Chapter 8 Service Mode 8 4 GPIB Service password Password for the Service mode sensor edit control sensor AorB Remarks This command saves the changed factory cal factor table to the sensor EEPROM SERHIST Outputs the serial nu
43. l and the supplied line power cable connects to it The module contains filtering elements to ensure immunity to external noise and reduce emissions The ML2430A Series Power Meter automatically senses the line level and internally configures itself accordingly The specified line power requirement is 85 264V AC 50 440Hz An internally mounted 2A slow blow fuse provides fault protection Note this fuse can NOT be changed by the operator 4 4 PN 10585 00003 Rev F ML2430A MM Chapter 4 Theory Of Operation 4 12 Power Supply Operation External DC Input An External DC jack connector is mounted on the main PCB and is accessed via a hole in the rear panel The specified External DC level is 12 to 24V Greater than 21V is required to charge the internal battery An internally mounted diode protects against reverse connection of the supply and a 3A slow blow fuse provides fault protection Damage may occur if the input voltage level exceeds 28V Note this fuse can NOT be changed by the operator Ground Stud A ground stud provides a ground for External DC operation or an additional ground connection RS232 Port A PC standard 9 pin D connector provides connection to the serial port The serial port can be used to update the power meter operating firmware and to control operation of the power meter from a PC or terminal The hardware handshake lines RTS and CTS are used to control the flow of data Serial control and data output commands
44. lly installed by pressing e System e more e more e more e Identity The new firmware version will be displayed on the front panel 5 2 PN 10585 00003 Rev F ML2430A MM Chapter 5 Firmware Updates 5 3 Bootload Mode 5 3 Bootload Mode If power is lost during programming or the Power Meter EPROM has been corrupted in some other way the Power Meter can be forced into a special bootload mode and reprogrammed The procedure in this section should be performed by qualified technical personnel only This Caution procedure requires access to internal components and care should be taken to avoid contact with potentially hazardous voltages Refer to the Main PCB drawing Figure 3 2 on page 3 3 for the location of test points and components 1 With AC power disconnected open the unit by loosening the six captive screws on the underside Figure 3 1 on page 3 2 and separate the top half of the case from the base Ensure that the front and rear panels remain firmly in place during this step 2 Remove the optional Ni Mh battery if so equipped Refer to the ML2430A Series Power Meter Operation Manual PN 10585 00001 3 Connect the personal computer serial COM port to the ML2430A Series Power Meter back panel RS232 Serial Connector using the ANRITSU Serial 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 pow
45. mation about safety items and operation precautions Ensure that you clearly understand the meanings of the symbols and take the necessary precautions before operating the equipment 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 This indicates a prohibited operation The prohibited operation is indicated symbolically in or near the barred circle This indicates a compulsory safety precaution The required operation is indicated symbolically in or near the circle This indicates a warning or caution The contents are indicated symbolically in or near the triangle This indicates a note The contents are described in the box wi O OY These indicate that the marked part should be recycled 3 x ML2430A MM PN 10585 00003 Rev F Safety 1 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 Moreover this alert mark is sometimes used with other marks and descriptions indicating other dangers Warning When supplying power to this equipment connect the accessory 3 pin power cord to a 3 pin groun
46. mber history Syntax SERHIST Remarks This command returns the instrument serial number history data in a binary format Response SERHIST 3272 lt first ever serial number gt lt serial numbers gt All serial numbers are terminated with a null character and padded with OxFF to 16 characters All unused serial number positions are filled with OxFF The last valid serial number in the list is the current serial number ML2430A MM PN 10585 00003 Rev F 8 5 8 4 GPIB Service Chapter 8 Service Mode 8 6 PN 10585 00003 Rev F ML2430A MM Appendix A Connector Care and Handling A 1 A 1 Introduction This appendix provides information on the proper care and handling of RF sensor connectors A 2 Connector Care And Handling ANRITSU Power Meters are high quality precision laboratory device and should receive the care and respect normally afforded such devises Follow the precautions listed below when handling or connecting these devices Complying with these precautions will guarantee longer component life and less equipment downtime due to connector or device failure Also such compliance will ensure that Power Meter failures are not due to misuse or abuse two failure modes not covered under the ANRITSU warranty Beware of Destructive Pin Depth of Mating Connectors Based on RF components returned for repair destructive pin depth of mating connectors is the major cause of failure in the field When a RF Mating co
47. mponent connector is mated with a connector having a destructive pin depth damage will usually occur to the RF component connector A destructive pin depth is one that is too long in respect to the reference plane of the connector Figure A 1 CT hw S Y 4 J SS 2 y l a K P PIN DEPTH DEPTH INCHES INCHES FEMALE MALE Figure A 1 N Connector Pin Depth Definition ML2430A MM PN 10585 00003 Rev F A 1 A 2 Connector Care And Handling Appendix A Connector Care and Handling The center pin of a precision RF component connector has a precision tolerance measured in mils 1 1000 inch The mating connectors of various RF components may not be precision types Consequently the center pins of these devices may not have the proper depth The pin depth of DUT connectors should be measured to assure compatibility before attempting to mate them with Power Meter or sensor connectors An ANRITSU Pin Depth Gauge Figure A 2 or equivalent can be used for this purpose B Epa Figure A 2 Pin Depth Gauge If the measured connector is out of tolerance in the region of the outer scale the center pin is too long Table A 1 Mating under this condition will likely damage the precision RF component connector If the test device connector measures out of tolerance in the region the center pin is too short This should not cause damage but it will result in a poor connection and a
48. nal ADCs There are five amplifier ranges the top two ranges are DC and the bottom three ranges are AC AC modulation chopping is used on the lower ranges to give measurement stability and noise immunity The signal channel automatically changes range as the level being measured varies This range changing is transparent 4 4 Human Interface The ML2430A Series Power Meter front panel has a large LCD unit 240 pixels wide by 64 pixels high used to show measurement readouts and display soft key menus The intensity of the display can be varied from just visible to blooming by a contrast control menu A display backlight is permanently on when using AC or external DC power Under battery power the backlight can be turned off to extend battery life The display can be configured to show a single channel or a dual channel readout The operations menus are driven by five main system keys Each one of these keys produces a soft key menu on the LCD which can be accessed by the four soft menu keys directly below the display On the left of the display is a key pad used to enter numeric data The power meter may be switched to stand by mode by the white ON OFF key in the bottom left corner of the front panel 4 5 GPIB Operation The ML2430A Series Power Meter GPIB operation is provided by a fully integrated National Instruments TNT4882 IC Most power meter front panel functions are available by GPIB command The Anritsu Power Meter offers five mod
49. nded Refer to Spare Parts Listing on page 1 3 for a listing of spare parts mentioned in this chapter Contact your nearest Anritsu Customer Service or Sales Center www anritsu com for price and availability information The procedures in this chapter should be performed by qualified technical personnel only These Caution procedures may require access to internal components and care should be taken to avoid contact with potentially hazardous voltages or damage from static electricity 7 2 Front Panel The ML2430A Series Power Meter front panel removal instructions will vary depending upon the various connector options installed Models Options And Accessories on page 1 2 Complete only those steps that apply to the specific unit under repair Tools Required e Phillips screwdriver e 3 16 nut driver Procedure 1 Remove the AC or DC power cord and the battery if fitted 2 Remove the top cover Figure 3 1 on page 3 2 3 Disconnect the Display Panel ribbon cable from J510 on the main PCB 4 Disconnect the Sensor Input A flex cable from J1 on the main PCB 5 Disconnect the Sensor Input B flex cable from J2 on the main PCB ML2430A MM PN 10585 00003 Rev F 7 1 7 3 Power Supply Chapter 7 Removal and Replacement Procedures 6 Disconnect the RF Calibrator cable assembly from J400 on the main PCB Display Panel Ribbon Cable RF Calibrator Connector J400 Sensor Input A Connector J1 Sen
50. nearity The calculated absolute errors for Range 1 Upper and Range 3 Upper should each be s 0 021 dBm e The calculated absolute error for Range 1 Lower should differ from the Range 1 Upper error by s 0 021 dBm e The calculated absolute error for Range 3 Lower should differ from the Range 3 Upper error by s 0 021 dBm Ranges 2 4 and 5 Linearity For Ranges 2 and 4 the absolute error calculated as above for the range Lower Level should differ from that range s Upper Level error by s 0 021 dBm For Range 5 the absolute error calculated as above for the range Lower Level should differ from the Upper Level by s 0 033 dB Range Change Error The Range Change Error is defined as the difference between the errors for the two dB levels at the overlap between any two ranges The maximum Range Change Error between ranges is specified below Range 1 Lower Range 2 Upper 0 021 dB Range 2 Lower Range 3 Upper 0 021 dB Range 3 Lower Range 4 Upper 0 021 dB Range 4 Lower Range 5 Upper 0 046 dB If any of the Range figures are outside of specification then proceed to the DC Reference calibration procedure in Chapter 3 2 4 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 5 Range Calibrator Diagnostics 2 5 Range Calibrator Diagnostics The Range Calibrator Diagnostics mode allows the user to investigate meter problems by holding on any of the fixed level outputs to examine the results of a
51. nectors Use only denatured alcohol as a cleaning solvent Do not use excessive amounts of alcohol as prolonged drying of the connector may be required Never put lateral pressure on the center pin of the connector If installed do not disturb the Teflon washer on the center conductor pin Verify that no cotton or other foreign material remains in the connector after cleaning it If available carefully use compressed air to remove foreign particles and to dry the connector After cleaning verify that the center pin has not been bent or damaged ML2430A MM PN 10585 00003 Rev F A 3 A 2 Connector Care And Handling Appendix A Connector Care and Handling A 4 PN 10585 00003 Rev F ML2430A MM Anri su EL AO Anritsu Company OY 490 Jarvis Drive BA Anritsu prints on recycled paper with vegetable soybean oil ink Morgan Hill CA 95037 2809 http www anritsu com
52. nit on from standby mode The switch is a software control switch which indicates to the PSU control circuitry what state the unit should be in The power meter is in standby mode when either AC line power or external DC is applied 4 10 Front Panel Connectors This section describes the ML2430A Series Power Meter front panel connectors Signal Channel Inputs On standard model ML2430A Series Power Meters the signal channel A and B input connectors are mounted on the front panel The connectors are 12 pin Hirose type A sensor cable provided with the meter is used to connect an Anritsu power sensor to the signal channel The connectors are snap push fit and require the outer body to be pulled to enable removal The A and B signal channel connectors may optionally be fitted on the rear panel Refer to Models Options And Accessories on page 1 2 RF Reference Calibrator The internal 50 MHz 0 dBm reference provides a high stability high accuracy level for signal channel calibration The output connector is a flange mounted female N type With the power sensor connected to the calibrator output a Zero Cal will automatically zero the signal channel and then perform a 0 dBm calibration All measurements are then referenced to the 0 dBm level 4 11 Rear Panel Connectors This section describes the ML2430A Series Power Meter rear panel connectors Line Power Input The AC line power input module is mounted on the rear pane
53. ory defaults and try again 2 Replace the main PCB Fault Incorrect operation of the rear panel BNC Inputs or Outputs One or more of the BNC connector fails to operate correctly Recommended Action 1 Visually inspect all of the BNC connectors If any physical damage is ob Action served replace the main PCB 2 If there is no physical damage yet the BNC Inputs or Outputs do not work correctly replace the main PCB ML2430A MM PN 10585 00003 Rev F 6 3 6 4 Battery Chapter 6 Troubleshooting 6 4 Battery The following procedures refer to possible faults with the optional power meter battery Fault Battery incorrectly detected or not detected battery will not charge or battery 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 When a fully discharged battery is installed it will not charge Recommended Action 1 Confirm the battery being used has some charge by press the charge indicator on the battery If no charge is shown replace the battery If the battery is charged and still the unit will not run when the battery is installed confirm that the battery contacts on the lower case are mated correctly with the PCB connector To do this remove the top cover and lift the left hand corner of the front panel up slightly Shine a bright light down into the case and verify that the contacts are mat
54. out changing the sensor serial number When Enter is pressed to accept the new serial number a warning message is displayed to remind the user not to remove the sensor while the serial number is being saved Ignoring this message and removing the sensor while programming could corrupt the sensor data Cal Factor Edit Menu Pressing the more softkey will bring up the FACTOR A or FACTOR B softkeys With this selection cal factors but not frequencies can be changed in the factory cal factor tables stored in the sensor EEPROM To edit the factory cal factor tables ML2430A MM PN 10585 00003 Rev F 8 3 8 4 GPIB Service Chapter 8 Service Mode 1 Select the FACTOR A or FACTOR B softkey 2 Use the down and up softkeys to select the frequency factor to change The current selection is marked by the gt gt Press the CHANGE softkey Use the numeric keypad to enter the new cal factor value Select dB or as appropriate Use the down and up softkeys to select the next cal factor to change or select the exit softkey if finished Select the SAVE softkey to save the changes to the sensor EEPROM or select the DISCARD softkey to discard the changes and return to the Service sensor menu Press the CANCEL softkey to return to the cal factor edit menu NOD OF A Printing the EEPROM data Pressing the more softkey again will bring up the PRINT A or PRINT B softkeys Selecting one of these softkeys will print the f
55. p Level Menu single channel ML2430A MM PN 10585 00003 Rev F 2 1 2 3 Input Range Chapter 2 Performance Verification ANRITSU Range Calibrator A B Aand B more KON N N ZN LEA Figure 2 2 ML2419A Top Level Menu dual channel 3 The performance verification tests will begin when the soft key for the sensor input to be verified is selected For single channel power meters ML2437A press the A soft key For dual channel models ML2438A press A B or A and B If the A and B softkey is selected all measurements are first taken on sensor input A then repeated for sensor input B Performance verification tests for each sensor input are performed in the following sequence The signal channel input is zeroed The Power Meter signal channel s are checked at the upper and lower levels of each measurement range A null is performed at each range setting prior to every measurement 4 When all measurements have been performed on the selected inputs the results are presented on the screen and the following soft keys are displayed ON Rangecalibratorresults SensorA Range upper Range lower 1 6 996 1 11 822 2 11 822 2 25 771 3 25 864 3 41 808 4 41 806 4 57 814 5 57 805 5 61 727 SENSOR PRINT REPEAT exit Figure 2 3 ML2419A Verification Results Menu Example SENSOR Toggles the display to show the data for each sensor channel verified If onl
56. pin 5 connected to pin 5 on connector 2 Connector 1 pin 6 connected to pin 4 on connector 2 Connector 1 pin 7 connected to pin 8 on connector 2 Connector 1 pin 8 connected to pin 7 on connector 2 Connector 2 pin 5 connected to the cable shield 5 4 PN 10585 00003 Rev F ML2430A MM Chapter 6 Troubleshooting 6 1 Introduction Chapter 6 Troubleshooting 6 1 Introduction It is strongly recommend that ML2430A Series Power Meter repair be performed by qualified technical personnel only The preferred ML2430A Series Power Meter service policy is the unit exchange program Service Policy on page 1 2 This policy ensures minimum down time for the customer Only when the unit exchange method is not possible should the fault finding and repair work detailed below be used Refer to Spare Parts Listing on page 1 3 for a listing of spare parts mentioned in this chapter Contact your nearest Anritsu Customer Service or Sales Center for price and availability information See Chapter 7 for specific module removal and replacement instructions The procedures in this chapter suggest the most likely remedies in a logical order of severity It is best to follow the steps as presented in order to properly isolate the fault Refer to the ML2430A Series Power Meter Operation Manual 10585 00001 for the specific operating instructions referred to in these procedures The procedures in this chapter should be performed by qualified techn
57. plete the POST Power sensors need not be connected at this time i On the Power Meter front panel press e System e more e more e more 4 Press the blank softkey just to the left of the back softkey 5 Press the 0 key on the numeric keypad 6 Press the blank softkey just to the left of the back softkey 7 Press the softkey labeled BOOT LOAD ML2430A MM PN 10585 00003 Rev F 5 1 5 2 Code Loader Chapter 5 Firmware Updates The LCD will display Loading Software Please Wait UN N eN N LA Disable Windows screen savers before attempting to run the code loader program Do not Caution interrupt the down loading process as corruption of the EPROM program may result Refer section Bootload Mode on page 5 3 8 From a DOS Prompt on the computer select the drive and directory where the Code Loader Program was installed 9 Type BOOTLOAD n QUART_FL Where n is the PC COM port used usually 1 or 2 Note the space before and after the COM port number The program will proceed to download the new operating system to the Power Meter The program takes about eight minutes to complete the update during which time the Power Meter LCD screen will be dark When the down loading is complete the Power Meter will reboot and be ready for normal use 10 Disconnect the serial interface cable from the computer and the Power Meter 11 Verify that the new firmware version was successfu
58. procedure is used to measure the Calibrator output power level of the ML2430A Series Power Meter Equipment Required e Agilent 432A Analog Power Meter e Agilent 34420A Nano Volt Micro Ohm Meter or equivalent e Agilent 8478B Power Sensor ML2430A MM PN 10585 00003 Rev F 2 11 2 7 Calibrator Power Level Chapter 2 Performance Verification Procedure 1 Connect the Agilent 34420A to the Agilent 432A using the 4 wire cable provided with the Agilent 34420A 4 wire cable provided with the Agilent 34420A along with two BNC to binding posts adapters needed to connect the four wires to the rear of the 432A power meter Figure 2 14 34420A Volt Meter 4 Wire Cable 2 12 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 7 Calibrator Power Level Connection shown to the Agilent 34420A Volt Meter Figure 2 15 Agilent 34420A Volt Meter Connection shown to the rear of the 432A Power Meter Green Vrf White GND of Vrf Red Vcomp Black GND of Vcomp be Figure 2 16 432A Power Meter Rear Panel ML2430A MM PN 10585 00003 Rev F 2 13 2 7 Calibrator Power Level Chapter 2 Performance Verification 12 Connect the Agilent Power Sensor 8478B to the Agilent 432A Power Meter 432A Power Meter shown connected to the 8478B Power Sensor Figure 2 17 423A Power Meter 13 Power on the 432A power meter and the 34420A voltmeter Allow the units to warm
59. quired 7 1 Procedure aia A alte tea eel tate dake DAN e ad ait 7 1 23 Power SUPRA A A Bee baa eee 7 2 Tools Required 7 2 Procedufevecxciae gente an alety fue ooh adie tina alas INEN at al ats paas Ooh dass o Be 7 3 124 Mal PCD ir o cell Det aceon Ree Giese Sete Gaara eda Wan a a 7 3 TOOIS REQUIFED 2 02 28 ala Wend a A A Ad da a EA aed 7 3 Removal Procedure 7 3 Replacement Procedure 7 4 To Rear Panels oi ase st as an ao e wal diac a 7 4 TOO REQUIERA ase oes ig 7 5 Procedure toa wae ahaa cit a a A AA als pleted 7 5 Chapter 8 Service Mode S Introduce A yl aha eee eed 8 1 8 2 Accessing Service Mode 0 cee eae 8 1 Contents 2 PN 10585 00003 Rev F ML2430A MM Table of Contents Continued 9 3 Sensor Mode eis wiht tik ds A bd Bate batt R dod 8 2 Entering the Password 0 0 00 cece teeta 8 2 Changing the Password 0 ee eee ee eee 8 3 Sensor Serial Number 2 2 ee eed eee ene ee es 8 3 CalFactor Edit Menus son tale ee ta sete daft a das Palatal Be 8 3 Printing the EEPROM data 0 cc ee bed ee EE EI E eee 8 4 3 4 GPIB SENO xs wis it ot an ole Mase Nee dane aoe bin mee inet Gee ee hol wage ae Paves eo 8 4 GCEECHG Aiea airada orde 8 4 CFESAV its a aes a pe eee he eae ay aCe oe ng 8 4 SERHS tecca suave na ene talked Ret cae Staats A A Seg Gaol tae ne tata aa 8 5 Appendix A Connector Care and Handling AGT SAS INOCUCHION 2 Aes Wate ae Eos taa e a ete A 1 A 2 Connector C
60. r installation operation and maintenance of Anritsu Company equipment and computer programs The drawings specifications and information contained herein are the property of Anritsu Company and any unauthorized use or disclosure of these drawings specifications and information is prohibited they shall not be reproduced copied or used in whole or in part as the basis for manufacture or sale of the equipment or software programs without the prior written consent of Anritsu Company UPDATES Updates if any can be downloaded from the Documents area of the Anritsu Website at http www anritsu com For the latest service and sales contact information in your area please visit http www anritsu com contact asp Notes On Export Management This product and its manuals may require an Export License or approval by the government of the product country of origin for re export from your country Before you export this product or any of its manuals please contact Anritsu Company to confirm whether or not these items are export controlled When disposing of export controlled items the products and manuals need to be broken or shredded to such a degree that they cannot be unlawfully used for military purposes CE Conformity Marking Anritsu affixes the CE Conformity marking onto its conforming products in accordance with Council Directives of The Council Of The European Communities in order to indicate that these products conform to the EMC
61. rator output frequency is outside the 10 kHz limit proceed as follows 2 Power down and disconnect the AC power cord from the ML243xA 3 Remove the six screws from the bottom of the ML243xA and remove the top cover 4 Power the ML243xA on and allow 15 minutes for it to warm up 3 4 PN 10585 00003 Rev F ML2430A MM Chapter 3 Calibration Procedures 3 6 Calibrator Frequency 5 Adjust the inductor core L401 so the frequency counter reads 50 MHz 10 kHz shee a Ja gt TRUITT VA E o al VALIIIITDS bj idddda q das N AF tit i B 4 s R i BAB cri f weese if gt js y ii Figure 3 3 L401 Adjustment If a metal adjustment tool is used it must be removed from the inductor core L401 before More reading the counter as the metal tool could affect the frequency ML2430A MM PN 10585 00003 Rev F 3 5 3 7 Calibrator Power Level Chapter 3 Calibration Procedures 3 7 Calibrator Power Level The following procedure is used to adjust the Calibrator output power POWER LEVEL level of the ML2430A Series Power Meter Equipment Required e Agilent 432A Analog Power Meter e Agilent 34420A Nano Volt Micro Ohm Meter Agilent 8478B Power Sensor e Adjustment tool Note When making adjustments to the reference calibrator output power level make sure that the area where the following steps will be performed is ESD protected Procedure 1 If the Referenc
62. s Power Meter is available with either one or two sensor inputs Model numbers options and accessories are listed below Table 1 1 Models Options And Accessories Models Model No Number of Sensor Channels ML2437A Single Channel ML2438A Dual Channel Options Model No Option ML2400A 01 Rack Mount single unit ML2400A 03 Rack Mount side by side ML2400A 05 Front Bail Handle Options 01 thru 05 are mutually exclusive ML2400A 06 Rear Panel Mounted Input A ML2400A 07 Rear Panel Mounted Input A and Reference ML2400A 08 Rear Panel Mounted Inputs A B amp Reference ML2400A 09 Rear Panel Mounted Inputs A and B Options 06 thru 09 are mutually exclusive ML2400A 11 3000 mA h NiMH Battery ML2400A 12 Front Panel Cover Can not be used with rack mounted units ML2400A 13 External Battery Charger Accessories Part No Item 760 206 Hard Sided Transit Case D41310 Soft Sided Carry Case with shoulder strap ML2419A Range Calibrator MA2418A 50 MHz 0 dBm Reference Source B41323 Serial Interface Cable 1 6 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 Policy The customer returns the power meter to the nearest Anritsu Customer Service Center and an identical meter is issued in exchange The original unit is repaired calibrated and ret
63. sor Input B Connector J2 Figure 7 1 Main Motherboard 7 Disconnect the green yellow ground wire from J607 on the main PCB Rear Panel Ground Stud J607 Figure 7 2 Front Panel Ground Wire Connection to Rear Panel Ground Stud 8 Gently pull straight up on the front panel assembly and remove Take care to pull the ground wire free of the back panel and under the main PCB Replacement is the opposite of removal 7 3 Power Supply The PSU is mounted on top of the main PCB on four nylon standoffs Connection to the main PCB is by two 20 pin connectors Tools Required e Phillips screwdriver 7 2 PN 10585 00003 Rev F ML2430A MM Chapter 7 Removal and Replacement Procedures 7 4 Main Pcb Procedure 1 Remove the AC or DC power cord and the battery if fitted 2 Remove the top cover Figure 3 1 on page 3 2 3 Disconnect the BLUE and BROWN wires connecting the AC input module to the PSU Blue Wire Brown Wire Figure 7 3 4 Remove the four Phillips screws and nylon washers securing the PSU to the Main PCB 5 Gently lift up on the PSU to disengage the through board connector pins at PL1 and PL2 Take care not to damage the pins 6 Angle the PSU so as to pull it up and away from the rear panel and remove Replacement is the opposite of removal 7 4 Main Pcb The main PCB is mounted on six pillars in the bottom case and secured by one centrally located screw Removal of the ML24
64. tic discharge Repair of damage that is found to be caused by electrostatic discharge is not covered under warranty Safety 2 PN 10585 00003 Rev F ML2430A MM Chapter 1 General Information 1 1 Scope Of This Manual Chapter 1 General Information 1 1 Scope Of This Manual This manual provides general information performance verification calibration theory and service information for the Anritsu ML2430A Series Power Meter The ML2430A Series Power Meters are shown below in Figure 1 1 ML2430A Series Power Meters 1 2 Introduction This chapter provides information on other related manuals the unit identification number instrument options service policies and component handling precautions 1 3 Related Manuals This manual is one of a two manual set consisting of this Maintenance Manual and the ML2430A Series Power Meter Operation Manual ANRITSU part number 10585 00001 These manuals are available as Adobe Acrobat pdf files from The files can be viewed using Acrobat Reader a freeware program provided from Adobe 1 4 Identification Number The ML2430A Series ID number is affixed to the rear panel Please use the complete ID number when ordering parts or corresponding with the ANRITSU Customer Service department ML2430A MM PN 10585 00003 Rev F 1 1 1 5 Models Options And Accessories Chapter 1 General Information 1 5 Models Options And Accessories The ML2430A Serie
65. tion or the RF level is not present at all Recommended Action 1 If the RF Calibrator is ON yet no power is present at the Calibrator connector replace the N type connector cable assembly from the main PCB to the front panel 2 Calibrate the RF Reference and output power as per sections Calibrator Frequency on page 3 4 and Calibrator Power Level on page 3 6 If calibration is not possible replace the main PCB 6 2 PN 10585 00003 Rev F ML2430A MM Chapter 6 Troubleshooting 6 3 Rear Panel 6 3 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 Action 1 Reset the unit back to factory default and try again 2 Replace the main PCB Fault The power meter will not load firmware It is not possible to load a firmware update or bootload firmware into the unit Recommended Action 1 Check that the PC configuration is correct for firmware transfer Refer to Chapter 5 Firmware Updates 2 Confirm that the serial cable is correctly wired and not damaged Refer to Serial Interface Cable on page 5 4 3 Replace the main PCB Fault No GPIB communication When connected to a compatible GPIB controller no communication occurs Recommended Action 1 Reset the unit back to fact
66. tment In the lower case is a compartment where the optional battery is installed The compartment has an access panel secured by two quarter turn fasteners The battery connects to five contacts mounted in the lower case which in turn make contact with five spring connectors mounted on the underside of the main PCB The battery is firmly secured in the compartment by foam pads ML2430A OM PM MM etc PN 10585 00003 Rev F 4 3 4 9 Front Panel Chapter 4 Theory Of Operation 4 9 Front Panel This section describes the ML2430A Series Power Meter front panel functional description LCD The large front panel Liquid Crystal Display presents measurements and operations menus Ninety percent of the top section of the display is for measurement readouts 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 system keys Sensor Channel Trigger System and Cal Zero Each of these keys generates a soft key menu on the bottom line of the display Soft Keys The four soft keys either apply functions directly or access second or third level menus Each key is related to the text displayed directly above it Data Entry Key Pad The data entry key pad features the numbers 0 through 9 decimal point and clear keys These keys are used to enter numeric data such as a sensor cal factor frequency ON OFF Key The soft ON OFF key is used to turn the u
67. ty The power meter will operate from supplied power in the following order of priority AC line power external DC and battery power ML2430A OM PM MM etc PN 10585 00003 Rev F 4 5 4 13 Battery Operation Chapter 4 Theory Of Operation On Off Control There are three ways to control the operation of the ML2430A Series Power Meter To turn the power meter on or off Connect or remove the AC line power cord external DC power cord or the battery e Use the soft ON OFF key on the front panel of the unit e Use the line power switch fitted on the early model power meter rear panels 4 13 Battery Operation This section describes the ML2430A Series Power Meter battery operation Battery The battery used in the ML2430A Series Power Meter is the 3000 mAh Duracell DR36S or 3500 mAh Energizer NJ1020 The battery is intelligent and contains information on charge status Operating Time The ML2430A Series Power Meter can operate for a maximum of nine hours on battery power with the battery fully charged to at least 90 of maximum capacity The display backlight must be turned off to achieve this operating time Intelligent Operation The battery retains a charge and discharge history which ensures correct charging and discharging is performed This is vital to ensure the maximum capacity and life of the battery is retained The intelligent link also allows current battery status data to be available at the operators request
68. urned to the customer whereupon the customer returns the exchange unit to the Anritsu Customer Service Center The original power meter is returned with the same identification marks and serial number as it had before the repair 1 2 PN 10585 00003 Rev F ML2430A MM Chapter 1 General Information 1 7 Spare Parts Listing Spares Kit Program Under circumstances where unit exchange is not possible a spares kit made up of major modular subassemblies is available from any Anritsu Sales Center 1 7 Spare Parts Listing The following spare parts are available for the ML2430A Series Power Meter Refer to Chapter 7 for Removal and Replacement procedures Contact your nearest Anritsu Customer Service or Sales Center for price and availability information Table 1 2 Parts Listing Part Number Description ND41357 Power Supply Assembly w power switch ND41358 Top Case Assembly ND41359 Bottom Case Assembly ND41401 Rear Panel Assembly no power switch ND41474 Rear Panel Assembly no power switch rear mounted A B and Cal ND41402 Power Supply Assembly no power switch ND44172 Front Panel Assembly ML2438Ae ND45354 Main PCB Assembly ML2437A ND45361 Rear Panel Assembly w power switch ND45365 Main PCB Assembly ML2438A ND45368 Front Panel Assembly ML2437A ND41469 Battery Cover with fastener B41294 Feet green as used before Feb 1998 B41411 Feet green as used
69. utput needed for uncertainty calculation in Step 15 R Mount Resistance of the 432A Power Meter Veomp ____ From Step 13 above V From Step 12 above Vo From Step 10 above Pmeas Calculated from the Pmeas equation above 25 After Pmeas is determined the next step is to calculate the expanded uncertainty with coverage factor K 2 This is done by using the equations below to get a value for the Expanded Uncertainty K 2 Table 2 1 on the following page shows an uncertainty calculation of an ML243xA Reference Calibrator Power Level The table shows the resulting expanded uncertainty and each source of uncertainty ML2430A MM PN 10585 00003 Rev F 2 19 2 7 Calibrator Power Level Chapter 2 Performance Verification Calibrator Power Level Uncertainty The formula for standard uncertainty is Standard Uncertainty X x Uncertaint y x Sensitivity C 1 Divisor The divisor of each source of uncertainty is determined by the type of probability distribution of each uncertainty source The uncertainty equations of Vo V1 Vcomp and R are obtained from the Agilent 33420A multimeter s accuracy specifications for 1 year 2345 C as stated in the product s datasheet The uncertainties of Vo V1 Vcomp and R vary model to model of the multimeter used The uncertainty of Effective Efficiency EE is obtained from the thermistor mount 8478B calibration data The uncertainty of Mismatch M is obtained by taking twi
70. wer meter signal channels The voltages are produced by means of a precision voltage reference and a series of switchable attenuators operated by a microcontroller All voltages produced are accurate stable and low noise such that errors inherent in the Range Calibrator itself do not contribute significantly to the error measurements of the signal channel The Range Calibrator is controlled remotely using the power meter menu system via the sensor cable s On connection of a sensor cable the meter automatically senses the presence of the Range Calibrator From this point the Range Calibrator is controlled using the ML2430A keyboard and displayed menus The performance of the ANRITSU ML2430A Series Power Meter s individual signal channel inputs are verified using the following procedure References in this procedure to sensor input B apply to model ML2438A dual channel power meters only 1 Connect the Range Calibrator to the Power Meter using 1 5m sensor cables The input s to be verified must be connected to the corresponding connector s on the Range Calibrator that is connect Power Meter connector A to Range Calibrator connector A and connector B to connector B ML2438A only 2 On connection of the sensor cable s the meter automatically detects a Range Calibrator is present and displays the performance verification menus R al IQ e CallDIalOl A B Aand B more LX gt gt Figure 2 1 ML2419A To
71. y one channel has been verified the SENSOR soft key shown in Figure 2 3 will not be displayed 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 Refer to the ML2430A Series Power Meter Operation Manual 10585 00001 for information on print commands and supported printers 2 2 PN 10585 00003 Rev F ML2430A MM Chapter 2 Performance Verification 2 3 Input Range See Figure 2 4 for an example of a printed Range Calibrator Report The results of the Range Calibrator tests are available from the power meter via the GPIB once Note the Range Calibrator is disconnected from the power meter Refer to the description of the RCD command in the ML2430A Series Power Meter Operation Manual Chapter 6 GPIB Operation REPEAT The last selected performance verification sequence is repeated exit Returns the user to the top level menu Figure 2 1 or Figure 2 2 ANRITSU Power Meter ML2438A s n 97310026 Range Calibrator Report Firmware 2 01 Date Time Operator Range Calibrator s n Range Input A Input B Zeroed Zeroed Zero 84 790dB 86 864dB Range upper 6 9904B 6 9904B Range 1 lower 11 834dB 11 834dB Range 2 upper 11 834dB 11 834dB Range 2 lower 25 774dB 25 774dB Range 3 upper 25 860dB 25
72. ynamic range of 20 to 70 dBm with one sensor Sensors Two types of sensors are available diode and thermal Diode sensors provide fast response speed and a wide dynamic range 20 dBm to 70 dBm for example Thermal sensors provide high accuracy and stable averaged readings with a dynamic range of 20 dBm to 30 dBm Internal 50 MHz Reference A high accuracy and stable 50 MHz reference is provided within the meter for convenient sensor calibration Battery The optional rechargeable battery offers portable operation for up to nine hours Measurement Modes Readout Mode Power measurement is displayed digitally in dBm dB milli watts dByV dB micro Volts dBmV dB milli Volts or W Watts Resolution can be set to 1 2 or 3 decimal points Profile Mode Power level is plotted against time in a graphical form This allows measurement of power pulses with nanosecond pulse width resolution Triggering may be manual external or internal Display scaling is available with cursor measurement 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 Ratio When two channels are fitted a ratio of A B or B A can be made External DC Volts DC volts from

POWER METER ML2430A SERIES MAINTENANCE MANUAL

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