Page 1 ML2430A SERIES POWER METER OPERATION MANUAL ANRITSU LTD (EMD) P/N: 10585-00001 RUTHERFORD CLOSE REVISION: K STEVENAGE PRINTED: MARCH. 2000 HERTS COPYRIGHT 2000 ANRITSU SG1 2EF www.valuetronics.com...
Page 2: Limitation Of Warranty
WARRANTY The ANRITSU product(s) listed on the title page is (are) warranted against defects in materials and workmanship for one year from the date of shipment. ANRITSU's obligation covers repairing or replacing products which prove to be defective during the warranty period.
Page 3: Safety Symbols
Safety Symbols Used on Equipment and in Manuals (Some or all of the following five symbols may or may not be used on all ANRITSU equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.)
Page 4 For Safety 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.
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Page 6: Table Of Contents
Table of Contents Chapter 1 - General Information 1-1 Scope of This Manual ......1-1 1-2 Introduction .
Page 7 Chapter 5 - Procedures 5-1 Introduction ....... . 5-1 5-2 Power Measurement ......5-1 5-3 Zeroing the Sensor .
Page 8 Appendix A - Specifications A-1 Introduction A-1 A-2 System Specifications ......A-1 A-3 System Defaults ......A-6 A-4 System Error Messages .
Page 9: Chapter 1 - General Information
Figure 1-1. ML2430A Series Power Meters INTRODUCTION This chapter provides information to familiarize the user with the basic ML2430A Series Power Meter. Included is information about the equip- ment identification number, models, options, and sensors. RELATED This manual is one of a two manual set consisting of this Operation Man-...
Page 10: Identification Number
IDENTIFICATION NUMBER GENERAL INFORMATION IDENTIFICATION The ML2430A Series ID number is affixed to the rear panel (see Figure NUMBER 3-2). Please use the complete ID number when ordering parts or corre- sponding with the Anritsu Customer Service department. POWER METER The ML2430A Series Power Meter is available with either one or two sen- sor inputs, and is delivered with a 1.5m sensor cable (ML2400A-20) for...
Page 11: Sensors
GENERAL SENSORS INFORMATION SENSORS The following sensors, sensor options, and sensor accessories are avail- able for use with the ML2430A Series Power Meters: Power Sensors (–70 to + 20 dBm) Model No. Range MA2468A 10 MHz – 6 GHz MA2469B 10 MHz –...
Page 12 ML2400A-30 Extra Operation Manual ML2437/38A The use of sensor ca- ML2400A-33 Printer bles greater than 10 MA2499B Anritsu Sensor Adapter meters in length is not MA2497A HP Sensor Adapter recommended when 1N75C 5W Limiter, 0.01 – 3 GHz, Nm-f, 75W...
Page 13: Chapter 2 - Installation
Installation This chapter provides information for the initial inspection and preparation INTRODUCTION for use of the ML2430A Series Power Meter. Shipping and storage infor- mation is also included. INITIAL Inspect the shipping container for damage. If the container or cushioning...
Page 14: Power Requirements
DC supply. Battery Power The ML2430A Series Power Meter can be operated using the optional internal battery pack. During battery operation, an icon will be displayed on measurement screens indicating the state of charge.
Page 15: Environmental Requirements
A grounding terminal is pro- vided on the rear panel to ground the unit during op- eration from a DC supply. The ML2430A Series Power Meter is designed to operate within the tem- ENVIRONMENTAL REQUIREMENTS perature range of 0 to 50° C (32 to 122° F) with a maximum humidity of 90% at 40°...
Page 16: Rack Mounting
RACK MOUNTING INSTALLATION The required parts and tools are listed below: Quantity Anritsu Part Max. Torque Description (each) Number Setting HANDLE, PULL, CHASSIS, PLASTIC, HARDWARE 783-1055 SPEED NUT 790-319 6-32, SST, WASHER, FLAT 900-345 M4, 8.00 MM, PHH, SCREW, FLAT HEAD...
Page 17 INSTALLATION RACK MOUNTING Locate the support bracket on the four PM case pillars. Secure with 4 screws 905-68 and 4 washers 900-345. (See max. torque settings page 2-4.) 5. Locate the front rack mounting bracket C37276 at the front of the PM on the other side to the large support bracket with two screws 905-68 and two washers 900-345.
Page 18 This assembly procedure also provides assem- bly instructions for fitting a ML2430A to a HP34401A Multimeter and a MF2412A Microwave Frequency Counter. The required parts and tools are listed below: Quantity Anritsu Part Max. Torque Description (each) Number...
Page 19 INSTALLATION RACK MOUNTING 1 Small Phillips screw driver Tools Required: 1 Large Phillips screw driver 1 Small Phillips torque screw driver 10cNm to 120cNm. 1 Assembly drawing “ML2400/03 SIDE BY SIDE OPTION” 1. Confirm the correct tools are available and the parts listed above are present. Re- Assembly Procedure fer to diagram on page 2-8 throughout this procedure.
Page 20 RACK MOUNTING INSTALLATION 900-345 49415 x 16 905-68 RACKMOUNT SIDE C37279 x 16 BRACKET (MULTI-FIT). RACKMOUNT BRACKET 900-807 X2 USE THIS BRACKET CENTER INNER REAR 900-806 X2 WHEN FITTING A USE THESE FIXINGS 49413 HP34401A WHEN FITTING A MF2412A RACKMOUNT BRACKET 900-795 COUNTER TO A ML2430A CENTER REAR...
Page 21: Battery Charging, Removal And Replacement
BATTERY CHARGING, REMOVAL AND REPLACEMENT INSTALLATION BATTERY The optional ML2430A Series Power Meter battery is a 12 Volt, 3000 CHARGING, mA-h nickel-metal hydride (Ni-MH) multi-cell pack, located in a compart- ment on the bottom of the housing. The compartment cover is secured by...
Page 22 Open the battery compartment as illustrated and remove the battery. Re- place the battery only with an identical battery or an equivalent as CAUTION recommended by an Anritsu Service Center. Ensure that the battery is • The ML2430A battery pack correctly connected and that the battery compartment cover is securely can leak, explode, or catch on fastened.
Page 23: Storage And Shipment
If this container is no Shipment longer available and the power meter is being returned to Anritsu for repair, ad- vise Anritsu Customer Service Center; they will send a new shipping container free of charge.
Page 24 STORAGE AND SHIPMENT INSTALLATION Table 2-3. ANRITSU Service Centers UNITED STATES FRANCE KOREA ANRITSU SALES COMPANY ANRITSU S.A ANRITSU KOREA 685 Jarvis Drive 9 Avenue du Quebec #901 Daeo building 26-5 Morgan Hill, CA 95037-2809 Zone de Courtaboeuf Yeoido Dong, Youngdeungpo...
Page 25: Chapter 3 - Connections
Sensor B Connector (ML2438A only) Figure 3-1. Model ML2430A Series Power Meter Front Panel Connectors This connector is a precision female N-Type, 50 Ohm connector that provides a Calibrator precision, traceable 0.0 dBm, 50 MHz reference signal for absolute calibration of 0.0 dBm Reference...
Page 26: Rear Panel Connectors
NOTE Only MA2400A Series sensors can be connected directly to the ML2430A Series Power Meters. MA4700A and MA4600A Series sensors require the MA2499A or MA2499B Anritsu Sensor Adapter. MP-Series (10-pin) sensors require an MA4001A or MA4002B adapter and an MA2499B.
Page 27 B, suitable for leveling Input. mation on using the Reference purposes. (with the default settling time of 0.1%), and programmable in PROFILE operation purposes. Calibrator output. mode and CUSTOM measurement mode. Figure 3-2. ML2430A Series Rear Panel ML2430A OM 3-3/3-4 www.valuetronics.com...
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Page 30: Front Panel Controls
If the GPIB box is on the screen and the system is not in a menu screen, and the system is in local mode (menus available), and no GPIB operations are pending, then pressing the CLR key clears the GPIB box off the screen. Figure 4-1. ML2430A Series Front Panel Controls ML2430A OM www.valuetronics.com...
Page 31: Power-On Procedure
OPERATION POWER-ON PROCEDURE POWER-ON At power-on, the power meter performs a brief power-on self test (POST). PROCEDURE After the POST, the instrument loads the last used configuration and dis- play settings. If a POST error occurs, information and available options will be displayed on the screen.
Page 32 "Restart unit. If error persists, con-tact Service Center." is displayed and the unit will halt the self test. Make note of the hexadeci- mal error code displayed and contact your nearest Anritsu Service Center (see Chapter 2, Table 2-1). Self test error messages are also available over the GPIB, as a self test status string (see STERR command, page 6-74).
Page 33: Sensor Menu4-5
Trigger controls are available with this sensor mode. Trigger Delay ment errors may result. (the time between the ML2430A Series receipt of a valid trigger event and the start of sample integration) and Gate Width (the du- ration of sample integration) controls are located in the Trigger menus.
Page 34 SENSOR MENU OPERATION NOTE Allows the operating range of the selected sensor to be set to the HOLD The HOLD selection is [RGH] desired range. Select a Range Hold value of 1 to 5, or Auto. When not available when in Auto, the range changes to take the best measurement automati- System/Setup/mode is cally.
Page 35 You will see a live up- quency. The V/GHz is supplied to the rear panel input connector of date of the Current Cal the ML2430A Series. The SETUP submenu has controls for cus- Factor only if that sen- tomizing the voltage and frequency relationship.
Page 36 SENSOR MENU OPERATION Factory Selects the Factory calibration factor table. Pressing Factory and the +/- key on the numeric keypad allows selection of a user- NOTE defined table in addition to the factory table. This allows full factory calibration to be active, and allows adjustments or corrections to be Whichever set, or sets, entered in the user-defined table.
Page 37 OPERATION SENSOR MENU Sets up the Start and Stop frequencies and voltages when Source SETUP [CVSTF is set to V/GHz. This tells the ML2430A how to determine the fre- CVSPF quency of the swept signal based on the applied rear panel voltage. CVSTV CVSPV] Sensor data averaging.
Page 38 SENSOR MENU OPERATION REPEAT averaging also allows the user to manually select the amount of averaging regardless of the signal level, however the dis- NOTE play is updated only when the NUMBER of readings specified have been taken (1-512). GPIB trigger com- mands automatically NOTE apply REPEAT averag-...
Page 39 OPERATION SENSOR MENU RESET Sweep average reset. If the graph sweep averaging state is ON, this key resets the data points and restarts the sweep to sweep mode. Between cursor averaging ON or OFF. When ON, a digital readout CURSOR [GRSWR] of the average power between the two cursors is displayed in the readout area of the PROFILE display.
Page 40 SENSOR MENU OPERATION Select the offset table number (1-5) when Offset TYPE is set to Ta- TABLE [OFFTBL ble. When a table is selected, additional soft keys become OFFTBR available: OFFTBU OFFVAL] EDIT This will bring up all of the selected offset table’s entries, with their associated frequencies and offsets.
Page 41: Channel Menu
OPERATION CHANNEL MENU CHANNEL MENU The Channel menu controls the operation of a display channel. There are two display channels, Channel 1 and Channel 2. Channel 1 appears at the top of the readout display and channel 2 at the bottom. If a channel input configuration is turned off, the remaining channel appears in the center of the screen.
Page 42 CHANNEL MENU OPERATION This function resets the Min/Max (when ON) for the channel RESET [MMRST] selected. Rel 1 After the relative power level is set by the operator, the Relative mode subtracts [REL] that value from the current measured power. If selected when in Relative mode, the relative operation for channel one is turned off.
Page 43 OPERATION CHANNEL MENU have been set for –10 dBm and the display units are subsequently changed from dBm to Watts, the system still checks for the reading to rise above –10, even though the display units type has been NOTE changed.
Page 44: Trigger Menu
TRIGGER MENU OPERATION TRIGGER MENU The Trigger function in the ML2430A allows the user to define under what condi- tions measurements are taken, and the time period they are taken over. For in- stance, the READOUT mode can be configured to display the average power of the ON period of a square wave, or an individual slot in a GSM burst.
Page 45 OPERATION TRIGGER MENU The trigger icons appear as shown in Figure 4-2. Modulated Average Continuous Manual Rising Edge Falling Edge Internal A NOTE Internal B External trigger is only effective at 800 KHz or lower. External Figure 4-2. Trigger Icons Only when a channel input configuration includes a sensor with a measurement mode that requires an icon, will an icon be displayed.
Page 46 TRIGGER MENU OPERATION In Profile mode, DELAY sets the time delay (after the display trigger DELAY [TRGDLY delay) to when the system starts to take and display readings, rep- GTDLY] resented by the left most cursor. Enter 0.0 to 1.0 seconds, in ms or NOTE Changing the left most cursor, or the trigger delay time, up- dates the cursor or the delay time value accordingly.
Page 47 OPERATION TRIGGER MENU GSM BURST FROM GENERATOR BURST TRIGGER SYNC FROM GENERATOR Figure 4-3. Typical Arming Diagram 1. Connect to the rear panel digital input. 2. Select Trigger|Setup|ARMING|Blanking ON. 3. Set the polarity of the blanking (System menu) Example power meter reading: –9.16 dBm. The Type selection (RISE or FALL) sets the trigger for a rising or TYPE [TRGTYP...
Page 48: Trigger Point
TRIGGER MENU OPERATION Figure 4-4 shows a typical trigger timing diagram. Note that the display trigger delay is only present when in Profile operation mode, and helps in setting the ‘window’ position along the signal. PRETRIGGER % CURSOR CURSOR GATE WIDTH DELAY INCOMING SIGNAL...
Page 49: System Menu
SYSTEM MENU The System menus control the operating modes, display visibility, sound, rear panel functions, and battery state of the ML2430A Series Power Meter. Note that the soft keys will appear differently depending upon the operation mode selected with the Setup soft key below.
Page 50 SYSTEM MENU OPERATION With LINK readout/profile trigger set to ON, switching to Readout mode uses the same trigger conditions, but allows the full dynamic NOTE range of the meter to be used, as well as providing full GPIB speed on data acquisition. With LINK set to ON, Readout mode is tem- When moving between Readout and Profile modes, with LINK en-...
Page 51 OPERATION SYSTEM MENU This selects how the graph is displayed on the screen. Select from DATA HOLD [GRPIX] NORMAL, Min&Max, Min, or Max. NOTE NOTE Useful for tracking If either Min&Max, Min, or Max is selected, the display will peak levels over a pe- keep the “old”...
Page 52 SYSTEM MENU OPERATION Anritsu 68/69000 Synthesized Sweep Generator HORIZ OUT NOTE: USE SLOW BLO FUSES ONLY 10 MHz 10 MHz REF IN REF OUT ML2430A Series Power Meter CAUTION 220V > 18 kg 2.5A LINE 110V SELECT HORIZ AUX I/O...
Page 53 OPERATION SYSTEM MENU Sweep stop frequency (MHz or GHz) or power (dBm) STOP [SRCSPFRQ SRCSPPWR] NOTE When the power meter is communicating with a signal source/generator over the serial interface, if the source fre- quency power level or the frequency itself is changed, the source sweep display will be updated where appropriate.
Page 54 SYSTEM MENU OPERATION cursor 1 reading cursor 2 reading Power difference between cursor 1 and cursor 2 Time difference between cursor 1 and cursor 2 Between cursor average if ON Data hold = MIN (or MAX) : cursor 1 minimum reading, or maximum if MAX mode cursor 2 minimum reading, or maximum if MAX mode Power diff between cursor 1 and cursor 2 minimums (or maximums if MAX mode)
Page 55 OPERATION SYSTEM MENU cursor 2 reading Power difference between cursor 1 and cursor 2 X axis at cursor 1 X axis at cursor 2 Data hold = MIN (or MAX) : cursor 1 minimum reading, or maximum if MAX mode cursor 2 minimum reading, or maximum if MAX mode Power diff between cursor 1 and cursor 2 minimums (or maximums if MAX mode)
Page 56 SYSTEM MENU OPERATION Reduces the display contrast. Adjust to suit ambient conditions. Contrast DOWN [DCONTD DCONT] Increases the display contrast. Adjust to suit ambient conditions. Contrast [DCONTU DCONT] Sets the time limit when the backlight will turn off if the BACKLIGHT TIMED [DBLTIM] setting is set to TIMED.
Page 57 High limit Low limit Limits test Readout Measured value ------ Figure 4-7. Sample ML2430A Series Printout Controls battery setup when the optional battery pack is installed. Battery Enables or disables the automatic power off feature. Automatic AUTO [BAUTS] power off can be used to conserve battery power when operating from the internal battery.
Page 58 SYSTEM MENU OPERATION NOTE Immediately after power-on, the “estimated operating time remaining” displayed may not be genuine, as the battery requires a few minutes to calculate the present rate of dis- charge. An accurate indication will be displayed only after a few minutes of continuous operation.
Page 59 OPERATION SYSTEM MENU Source IF allows the power meter to communicate with an Anritsu 68/69000-series synthesizer when the operation mode is set to NOTE Source Sweep. For the power meter to communi- BAUD [RSBAUD] cate with Anritsu 68/69000-series Sets the serial port BAUD rate. Select from 1200, 2400, 4800, 9600 synthesizers using Source IF, the (default), 19200, or 38400.
Page 60 SYSTEM MENU OPERATION POWER [MODPWR] – If this is set, and the power cycles on the meter, then the number specified in the “phone number” field will be dialed. When a connection is established, an SRQ will be sent to the host PC.
Page 61 OPERATION SYSTEM MENU ACMod output (port 1 only) is a TTL signal synchronized to the in- ternal chopper (when used) of the signal channel. This signal can be used for synchronization with external sources or when viewing AC range (chopped) signals. Leveling outputs - To allow the power meter to be used in a leveling loop, the sig- nal channel output is available on the rear panel.
Page 62 Also see Figure 4-4, page 4-20. Secure Normally OFF. When the system is powered on the ML2430A Series returns to [SECURE] the state it was in when it was powered off. This includes all the offset tables, cali- bration adjust values, etc.
Page 63: Cal/Zero Menu
OPERATION CAL/ZERO MENU RF ON/OFF Turns the RF calibrator ON or OFF. [RFCAL] Zeros the rear panel multi-purpose BNC connector used for Volts per GHz con- Ext V [VZERO] nection (Analog Input). This will calibrate the units to read zero volts on this BNC. During this operation the connector should either not be connected to anything, or should be connected to a 0 Volt source.
Page 64: Chapter 5 - Procedures
This chapter presents some common procedures for use with the INTRODUCTION ML2430A Series Power Meter. These procedures refer to the ML2430A Series front and rear panel connectors and front panel keys and menus as explained in Chapter 3, Connections, and Chapter 4, Front Panel Op- eration.
Page 65: Sensor Calibration
The sensors can also be zeroed using the GPIB ZERO command (see Chapter 6, “GPIB Operation”). Referencing power sensors to the ML2430A Series 50 MHz, 0.0 dBm cali- SENSOR CALIBRATION brator is recommended. Sensors should be zeroed before being cali- brated, either as a separate operation (Section 5-3) or in conjunction with calibration (Section 5-5).
Page 66: Sensor Zero/Cal
Chapter 6,” GPIB Operation”). PERFORMANCE The performance of the Power Meter’s individual signal channel inputs can be VERIFICATION verified using an Anritsu ML2419A Range Calibrator. Refer to the ML2419A Range Calibrator Operation and Maintenance Manual (10585-00007) for specific instructions. ML2430A OM...
Page 67: Printer Connection
See Chapter 3, Connectors, for the location of the parallel port connector on the CONNECTION rear panel. Connect a parallel printer cable from the ML2430A Series rear panel 25-pin D-sub connector to the printer. Select System|Print to begin printing. See Chapter 4, Front Panel Operation, for specific printer connector configuration options.
Page 68: Serial Remote Operation
PROCEDURES SERIAL REMOTE OPERATION SERIAL REMOTE The ML2430A Series Power Meter can be operated remotely through the rear OPERATION panel serial connector (See Chapter 3, Connectors, for the location of the serial connector). Whereas GPIB has restrictions on total cable length and cable length between instruments, RS232 serial communication is not as limited.
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Page 70: Rs232 Modem Support
PROCEDURES RS232 MODEM SUPPORT Connected Device Character Sequence Computer connected directly "+++at\r\rS\n" Modem offline from phone network modem status data followed by "S\n" Sequence will be seen if remote connection established Modem connected through to remote com- "+++S\n" puter GPIB/RS232 Modem The following table lists the GPIB/RS232 Modem Commands and the special se- rial interface only commands: Commands...
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Page 72 PROCEDURES RS232 MODEM SUPPORT 4. To set a limit for channel 1 and to have the power meter autodial a remote computer when this limit fails, send the following sequence: LLIM 1,-12DBM Sets low limit on channel 1 to -12dBm LLIMS 1,ON Turn low limit testing ON for channel 1 MODLIM ON...
Page 73 PC. To clear the status register, use the command: *CLS\n 5-11 The ML2430A Series Power Meter can be used to view signals in Profile, Read- PROFILE OPERATION MODE out, Power vs. Time and Source Sweep modes. This section describes setting up and viewing signals in the Profile mode.
Page 74: Profile Operation Mode
PROCEDURES PROFILE OPERATION MODE To view the time profile of a signal, enter the PROFILE mode via SYSTEM|SETUP|MODE (toggles through READOUT, PROFILE and POWER vs. NOTE TIME ). Parameters needed to set up a PROFILE display are: To operate the Univer- 1.
Page 75: Cursor Readout
PROFILE OPERATION MODE PROCEDURES NOTE With a CONTINUOUS trigger such as this, there will most likely not be specific points of interest, so the movement of the cursors is rather arbitrary. If modulation is applied to the signal, or its power level al- tered, the signal should change on the display.
Page 76 PROCEDURES PROFILE OPERATION MODE cussed more fully in the Triggered Measurements section below. Range Hold may be selected (see page 4-6) to limit dy- namic range and prevent small range change distur- bances on very high speed signals. Use Range Hold 1 for measurements down to –25 dBm, and Range Hold 2 up to –25.
Page 77 PROFILE OPERATION MODE PROCEDURES The unique method of range changing applied in this mode means that the change between range 1 and 2 is effected in less than 2 ms. In most cases it is not notice- able, although there may be a slight discontinuity. Due to the range-change method, if a triggered signal is not repetitive the range change may not settle instantly, and the displayed result may be in error.
Page 78 PROCEDURES PROFILE OPERATION MODE NOTE For smaller values of display trigger delay, it is possible that the display will cover time intervals (on the left of the display) for which there is no data. In these conditions, the cursors are normally prevented from displaying data taken there as it will be in error (there is no data).
Page 79 TTL, the SENSOR|SETUP|Range HOLD feature can still be applied to restrict dynamic range if required. 5-12 This feature allows the ML2430A Series Power Meter to be synchronized to an SOURCE SWEEP MODE RF source using the Horizontal ramp (to Analog Input) output on the RF source.
Page 80: Source Sweep Mode
PROCEDURES SOURCE SWEEP MODE Frequency Sweep When the sensor/cal factor source is set to V/GHz in Source Sweep mode, the start and stop voltages are assumed to be 0 and 10V, and the start and stop fre- Mode quencies are taken from the System|Source sweep menu. Calibrate the V/GHz setup by setting 0 and 10v and the frequencies (F1 and F2) that these voltages correspond to (sweep width).
Page 81: Power Vs. Time Mode
Contact your nearest Anritsu Service Center for a firmware upgrade if necessary. 5-13 POWER vs. The ML2430A Series Power vs. Time mode is a graphical chart display of one of the display channels, as selected in the SYSTEM|PWRvsTIME menu. The trig- TIME MODE gering setup is as set for Readout mode operation.
Page 82: User Cal Factors
It is not necessary to re-setup the new meter. tor indicator, signifies User Cal Factors are The first time a sensor is used with the ML2430A Series, a slight delay may be active. experienced when the sensor is first plugged in. This is caused by the firmware preparing the sensor to accept user cal factor tables.
Page 83 USER CAL FACTORS PROCEDURES Cal factor tables are accessed through the Sensor|CalFactor|USE TABLE front panel menus (Chapter 4), or through GPIB commands (Chapter 6). ML2430A Sensor CalFactor -more- USE TABLE %/dB EDIT Figure 5-4. Cal Factor Table Key Sequence Use the key sequence Sensor|Cal Factor|EDIT to get to the table edit menu. Use Example Procedure the TABLE key to select the table, then the EDIT key to edit that table.
Page 84: Optimizing Readings
This section presents information on how to get the fastest readings from the READINGS ML2430A Series power meter when operating under GPIB control. Refer to Chapter 6, GPIB Operation, for specific command descriptions. Measurement speed depends greatly on the type of measurements being taken, the power level, and the amount of settling used.
Page 85 OPTIMIZING READINGS PROCEDURES Send(0, 13, “O 1”, 3L, NLend); Receive(0, 13, buffer[i], 20, STOPend); Settling (%) Power Level (dBm) Readings/Second –30 10.0 –30 The 0.1% settling on –30 dBm power level results were not improved because of the amount of time needed to settle to 0.1% on –30 dBm. Using the FAST command (page 6-37) limits the types of measurements that can FAST be taken.
Page 86 Settling (%) Power Level (dBm) Readings/Second –30 By changing the sensor measurement mode to Custom, the ML2430A Series can Changing measurement modes be precisely configured to meet the needs of the specific application. In this example, the Trigger Gate Width (page 6-79) has been reduced to 1 ms, Channel 1 is set to Sensor A, and Channel 2 is off.
Page 87: Operator Maintenance
%i = %s”, i+1, buffer[i]); 5-16 OPERATOR The ML2430A Series does not require any operator maintenance. All re- MAINTENANCE pairs must be performed by qualified service personnel only. Refer to Ta- ble 2-1 for the nearest Anritsu Service Center.
Page 88: Chapter 6 - Gpib Operation
This chapter provides alphabetically-ordered listings and descriptions of all INTRODUCTION ML2430A Series GPIB programming commands. The majority of the GPIB com- mands have equivalents in the front panel menu settings. Note that GPIB opera- tion is not available when the power meter is running from the internal battery (option ML2400A-11).
Page 89: Data I/O Formats
The suffix unit is always allowed but is not required and is shown in brackets where appropriate. Table 6-1 lists the numeric data suffix mnemonics for the ML2430A Series Power Meter. These mnemonics are used when entering numeric data with GPIB com- mands (use of these codes is optional).
Page 90 GPIB addresses (1 to 30) User Averaging number in the AVG command (1 to 512) Display contrast number (1 to 12). The ML2430A Series data formats are summarized below: This notation represents ASCII integer values. A comma (,) is used to separate <NR1>...
Page 91: Query Commands
*IDN?, 488.2 common query. In the example, the instrument identifies it- self as an Anritsu 2410A, with serial number 123456, and software version 1.0 in- stalled. Note that decimal 10 (0Ah character) must be sent with the EOI to signal end of transmission.
Page 92: Gpib Pc Card Setup
The following GPIB driver configuration set up is recommended for reliable GPIB SETUP communication with the ML2430A Series power meter. The set up is expressed in the terms used by the National Instruments GPIB ISA and PCI cards and driv- ers for WIN95 and DOS.
Page 93: Using 488.1 Gpib
This command triggers a GPIB device. An action predefined by the setup of the Device trigger (GET) device being triggered will take place. On the ML2430A Series, the device trigger provides a trigger of the type defined by the GTn commands previously sent and a reading put into the output buffer for each display channel that is not OFF.
Page 94: Using 488.2 Gpib
USING 488.2 GPIB standardization of GPIB communication. This section explains the fundamentals of 488.2 GPIB operation and how it is implemented in the ML2430A Series Power Meter. Refer to the full IEEE 488.2 standard for more detailed information. 488.2 Command...
Page 95 USING 488.2 GPIB GPIB OPERATION Operation Complete. When a program message that includes the *OPC com- mand has been completed, and the GPIB interface is idle, with any responses read out of the output buffer this bit is set. For example, if the last command in a configuration sequence is *OPC, the OPC bit in the event status register will be set when that configuration list has been completed.
Page 96: Service Request Status (Srq)
GPIB OPERATION SERVICE REQUEST STATUS (SRQ) 2. Request data from display channel 1 by sending: The SRQ will be set with the new reading which will now be in the output buffer ready to be read. The data should now be read so that the MAV bit will be cleared.
Page 97: Functional Groups
FUNCTIONAL GROUPS GPIB OPERATION If any of the event register bits are set and the corresponding event status enable bits are set the ESB bit in the status byte will be set. This bit can be used to set an SRQ by setting the same bit in the SRE register using the *SRE command. The ESB bit is cleared when the ESR is read by using the *ESR? command (pages 6-14, 6-54, 6-101).
Page 98 GPIB OPERATION FUNCTIONAL GROUPS SENSOR The SENSOR group commands select the data acquisition controls for the se- lected sensor. SYSTEM The SYSTEM group commands control the overall functionality of the ML2430A Series Power Meter, including the system operation mode, cursor control, display configuration, sound, printing, battery control and status, rear panel configuration, graphics, system security, and system identity.
Page 99 This section provides an alphabetical listing of the GPIB commands (mnemonics) COMMANDS used to program the Model ML2430A Series Power Meter in ML24XXA (native) mode. The emulation mode can be set through the front panel SYSTEM|more|more|Rear panel|GPIB|MODE menu (see Chapter 4, Operation) or through the GPIB command EMUL (page 6-35).
Page 100: Ml24Xxa Native Commands
GPIB OPERATION ML24XXA NATIVE COMMANDS configuration combines sensors, the combination is done in linear units. If the result of the combination produces a negative linear value and the displayed units are log (i.e., dB) this would be an illegal logarithmic operation. Printer error - A print was requested and this error was returned.
Page 101 Operations complete GPIB 488.2 Syntax: *OPC Remarks: The ML2430A Series generates the OPC event in the standard event status register when all pending operations have finished. An operation is complete when all input messages before the command have been completed and any responses have been read out of the output buffer.
Page 102: Set|Reset
Syntax: *RCL <val> val: 1 to 10 Remarks: The ML2430A Series can store up to 10 instrument configurations for con- venient recall. The configuration parameters stored are: Sensor Setup, Channel Setup, and Trigger Setup. This command sets the ML2430A Series to a configuration previously stored in memory locations 1 through 10.
Page 103 ML24XXA NATIVE COMMANDS GPIB OPERATION Related Commands: *RCL *SRE Setup service request enable register GPIB 488.2 Syntax: *SRE <val> val: 8-bit mask Remarks: Sets the Service request enable register bits. *SRE? Return Service Request Enable register GPIB 488.2 Syntax: *SRE? Remarks: Returns the Service Request Enable register.
Page 104 Change GPIB address GPIB SETUP Syntax: ADDR <val> val: 1 to 30 Remarks: Once the address has been changed, the ML2430A Series will no longer respond to the old address. The power meter default address is 13. Query: ADDR? Returned ADDR <val>...
Page 105 ML24XXA NATIVE COMMANDS GPIB OPERATION same command as the one which changes to AUTO averaging, it will also update the USER averaging number. Example: AVG A, AUTO, 64 This command will set the system to AUTO averaging and the USER av- eraging number to 64.
Page 106 Remarks: Sets the low level averaging window for the sensor. At resolution settings of 0.01 and 0.001dB, digital readouts may flicker due to the high reading rate of the ML2430A Series. Low level averaging applies a low pass filter to post-average data readings to achieve a more stable front panel display without slowing down the response of the meter to larger changes in level.
Page 107 ML24XXA NATIVE COMMANDS GPIB OPERATION Syntax: BAUTS <state> state: ENABLE or DISABLE Remarks: Enable/disable the battery auto power shut off. NOTE: Although GPIB is not available under battery operation, the state of this parameter can be changed for later use. Query: BAUTS? Returned BAUTS <state>...
Page 108 A or B Remarks: Performs a 0dBm calibration when the sensor is attached to the reference 0 dBm source on the ML2430A Series (or another 0 dBm reference source). If the calibration fails, the 'execution error' bit in the Event Status Register is set.
Page 109 ML24XXA NATIVE COMMANDS GPIB OPERATION val: .07 to 150% +31.55 to -1.76dB Remarks: If the Cal factor source is set to manual, this is the calibration factor number used. CFCAL A, %, 99 Example: Sets the calibration factor to 99% for sensor A. CFCAL A, DB, 0.2 Sets the calibration factor to .2 dB for sensor A.
Page 110 GPIB OPERATION ML24XXA NATIVE COMMANDS Manual uses the CFCAL number itself. VGHz takes the frequency from the V/GHz input and uses it to look up the calibration factor from the EEPROM in the sensor. Related Commands: CFVAL Query: CFSRC? <s> Returned CFSRC <s>,<source>...
Page 111 ML24XXA NATIVE COMMANDS GPIB OPERATION Remarks: Clears the cal factor table to one entry for 50 MHz at 100%, but does not clear the identity of the table. The cleared table is automatically saved to the sensor. CFUID Cal factor table identity update SENSOR Syntax: CFUID <s>,<table number>,<identity>...
Page 112 GPIB OPERATION ML24XXA NATIVE COMMANDS binary data: Same data as that recieved by CFURD Remarks: Loads binary data into the cal factor table. This command will automatically save the data to the sensor. CFUPT Preset cal factor table SENSOR Syntax: CFUPT <s>,<table number> A or B table number:...
Page 113 ML24XXA NATIVE COMMANDS GPIB OPERATION This message can be manipulated to program a different table using the CFULD command. CFUSAV Cal factor table save SENSOR Syntax: CFUSAV Remarks: This command saves the cal factor table currently being edited to the ap- propriate sensor.
Page 114 GPIB OPERATION ML24XXA NATIVE COMMANDS Remarks: Returns a number indicating the cal factor table, or combination of tables, being used by the selected sensor. Possible returned values are: 0 = factory default table 1 to 10 = user table being used 11 to 20 = factory table + user table being used CFUVLD Valid cal factor table check...
Page 115 ML24XXA NATIVE COMMANDS GPIB OPERATION CHCFG Channel input configuration CHANNEL Syntax: CHCFG <c>,<config> 1 or 2 config: OFF, A, B, V A–B, B–A A/B, B/A Remarks: A, B, V = Sensor A, Sensor B, or External Volts (If V is sent when in Profile or Source Sweep mode, an execution error will occur.) A–B, B–A = Sensor A minus Sensor B, Sensor B minus Sensor A A/B, B/A = Sensor A divided by Sensor B, Sensor B divided by Sensor A...
Page 116 GPIB OPERATION ML24XXA NATIVE COMMANDS units: W (Watts) DBM (dB) DBUV (dBmV) DBMV (dBmV) Remarks: DBM 0dB is equal to 1mW readout mode W = Watts readout mode V = Volts readout mode. This selection is automatically made when the channel input configuration is set to External volts (EXT V).
Page 117 ML24XXA NATIVE COMMANDS GPIB OPERATION Related Commands: GRDDT, SRCSPFRQ, SRCSTFRQ, SRCSTPWR, SRCSPPWR CURLK Link cursors in all graphic modes PROFILE SETUP Syntax: CURLK <state> state: Remarks: Links the two cursors together on the graph. When either cursor moves left or right, the other cursor follows. Subsequent changes to delay will move both cursors.
Page 118 GPIB OPERATION ML24XXA NATIVE COMMANDS Related Commands: CVSPF, CVSTF, CVSTV Query: CVSPV? <s> Returned String: CVSPV <s>,<val> CVSTF V/GHz calibration factor start frequency SENSOR Syntax: CVSTF <s>,<val>[units] A or B 10 kHz to 122 GHz val: Remarks: Sets the start frequency of the V/GHz calibration factor settings. Related Commands: CVSPV, CVSPF, CVSTV Query: CVSTF? <s>...
Page 119 ML24XXA NATIVE COMMANDS GPIB OPERATION Remarks: Sets the mode of the LCD backlight when under Battery power. ON = back light is ON all the time OFF = back light is OFF all the time TIMED = back light is on for a limited time period set by the DBLTIM com- mand.
Page 120 GPIB OPERATION ML24XXA NATIVE COMMANDS Returned DCONT <val> String: DCONTD Set display contrast down by one DISPLAY Syntax: DCONTD Remarks: Make the display lighter by lowering the contrast by one level. DCONTU Set display contrast up by one DISPLAY Syntax: DCONTU Remarks: Make the display darker by increasing the contrast by one level.
Page 121 ML24XXA NATIVE COMMANDS GPIB OPERATION B = Sensor B only A&B = Sensors A and B displayed at the same time OFF = Turns the peak meter display off. The peak meter display range covers 12 dB. When above the displayed maximum or below the displayed minimum, the range is switched by 10 dB in the appropriate direction.
Page 122 String: DUTYS <s>,<state> EMUL GPIB emulation mode GPIB SETUP Syntax: EMUL <mode> ML24XX (Anritsu ML2430A Series native mode) mode: HP436A (Hewlett-Packard) HP437B (Hewlett-Packard) HP438A (Hewlett-Packard) ML4803 (Anritsu ML4803A Series) Remarks: Set the GPIB emulation to emulate other types of power meters. This com- mand is available in any emulation mode, and resets the whole GPIB inter- face when the emulation mode is changed.
Page 123 ML24XXA NATIVE COMMANDS GPIB OPERATION ENTERR Entry Error beep SYSTEM Syntax: ENTERR <state> ON or OFF state: Remarks: Turns the user entry error warning beep On or Off. Query: ENTERR? Returned String: ENTERR <state> ERRLST Returns the DDE error list DATA OUTPUT Syntax: ERRLST Remarks: On detecting a DDE event, this command returns the error list giving the...
Page 124 GPIB OPERATION ML24XXA NATIVE COMMANDS NOTES The GPIB command error and GPIB execution error are always enclosed within exclamation marks (!). If no errors have been produced since the last ERRLST was read, the ERRLST will end with '!!!'. When read for the first time after startup, a sensor may be reported as not fitted even though it is.
Page 125 ML24XXA NATIVE COMMANDS GPIB OPERATION e. Sensor OFFSETS are applied. f. Relative is applied if it is set to on before switching to FAST mode, and if display channel 1 is configured for a single sensor and dB units. g. No other data output requests are processed while in FAST mode, ex- cept for serial poll.
Page 126 SYSTEM Syntax: FRST Remarks: Resets the ML2430A Series to the factory default configuration (see Ap- pendix A). Unlike the *RST command, the offset tables are cleared and all external interfaces are reset. Note that any settings in the *ESE and *SRE registers prior to this command will be reset.
Page 127 ML24XXA NATIVE COMMANDS GPIB OPERATION GPRST Reset min/max graph PROFILE SETUP Syntax: GPRST Remarks: When profile DATA HOLD mode is set to Min/Max points, this command is used to reset the min/max values for each data point. Related Commands: GRPIX GRAUTO Auto scaling SYSTEM...
Page 128 GPIB OPERATION ML24XXA NATIVE COMMANDS Returned GRCP <state> String: GRDATA Display Graph Cursor Data PROFILE SETUP Syntax: GRDATA <state> ON or OFF state: Remarks: Display the graph cursor data readout box. GRDATA must be turned on be- fore attempting to execute the GRDRQ command to send the data over the GPIB.
Page 129 ML24XXA NATIVE COMMANDS GPIB OPERATION GRDRQ <channel_number>,<Cursor_1_dB>,<Cur- sor_2_dB>,<Delta_power>,<Delta_time>[,<Average>] <Delta_power> and <Delta_time> are absolute values. <Average> is only present when between cursor averaging is turned ON with the GRAVG command. If no data is available, that is, a sensor is not fitted, the profile is not trig- gered, or the Power vs.
Page 130 GPIB OPERATION ML24XXA NATIVE COMMANDS Syntax: GRPIX <mode> mode NORM MINMAX Remarks: Changes the type of graph displayed: NORM: Profiles the sensor readings vs. time from the triggered point. MINMAX: Plots both the MIN and MAX values for each point on the graph. If connect points (GRCP) is ON, a vertical bar is drawn between the min and max points.
Page 131 ML24XXA NATIVE COMMANDS GPIB OPERATION Remarks: Sets the pre trigger percentage of the profile screen. The percentage of the data collection period that shows pretrigger infomation if the display trigger delay is 1/PRF. Query: GRPTP? Returned String: GRPTP <val> GRSWP Graph Averaging Number for Profile or Source Sweep PROFILE SETUP Syntax: GRSWP <s>,<val>...
Page 132 GPIB OPERATION ML24XXA NATIVE COMMANDS Related Commands: GRSWP GRSWR Query: GRSWS? Returned String: GRSWS <state> GRTMM Profile Min/Max tracking mode PROFILE SETUP Syntax: GRTMM <mode> mode: SINGLE INFINITE Remarks: Set Minimum and maximum tracking mode between the cursors. SINGLE: Resets min and max values after each sweep. INFINITE: Never resets the min and max values.
Page 133 Set 'GET' command to TR1 type (immediate) trigger GPIB TRIGGER Syntax: GT1 Remarks: When the ML2430A Series receives a GET or *TRG command, the system will perform a TR1-type trigger command. Related Commands: *TRG, Group Execute Trigger (GET), GT0, GT2...
Page 134 GPIB OPERATION ML24XXA NATIVE COMMANDS Remarks: Sets the profile trigger arming ON or OFF. If set to ON, the system first checks to see if the BNC sweep blanking input is TRUE before it starts to trigger. If set to OFF, the system triggers on whatever trigger source it has been set up for.
Page 135 ML24XXA NATIVE COMMANDS GPIB OPERATION Syntax: GTLVL <val> val: –30 to +20 dBm Remarks: When the system trigger in profile mode is set to either INTA or INTB (in- ternal sensor A or B) it will trigger on a power level given by the sensor. This command sets the level.
Page 136 Remarks: When the profile system trigger source is set to INTA or INTB (Internal A or B) the ML2430A Series triggers on a power level (GTLVL) rising or falling. This command sets the trigger for a rising or falling edge.
Page 137 ML24XXA NATIVE COMMANDS GPIB OPERATION val: Units –99.99 +99.99 dBmV –53.00 147.00 7.00 207.00 dBµV Watts 50.0 Remarks: Sets the high limit. The HLIMS command turns the limits on and off. It is not necessary to enter the units as the limit value is checked against the displayed value.
Page 138 GPIB OPERATION ML24XXA NATIVE COMMANDS Syntax: HOLD <state> state: ON or OFF Remarks: This command holds the present graph displayed on the screen and is available in all graph modes. In Profile and Power vs. Time modes, this command will not work when trigger source is set to MANUAL. The held graph can be requested over GPIB by using the OGD or OGBD com- mands.
Page 139 ML24XXA NATIVE COMMANDS GPIB OPERATION state: ON or OFF Remarks: This will link the trigger set-up between Profile mode and Readout mode so that the sample delay and the gate width will agree. A change to the trigger set-up in either Readout or Profile system set-up will affect either display mode.
Page 140 GPIB OPERATION ML24XXA NATIVE COMMANDS Remarks: The LLIMS command turns the limits on and off. Related Commands: LLIM Query: LLIMS? <c> Returned String: LLIMS <c>,<state> MMRST Min Max Tracking reset CHANNEL Syntax: MMRST <c> 1 or 2 Remarks: This command resets the min/max values when in 'Readout' or 'Power vs.. Time' mode.
Page 141 ML24XXA NATIVE COMMANDS GPIB OPERATION MNGD <number_of_elements>,<element_1>,<element_2>,<ele- ment_n>...<\n> The first number in the string is the number of elements to follow, and is al- ways 200 for the ML2430A Series. MNMXS Track min and max values CHANNEL Syntax: MNMXS <c>,<state>...
Page 142 GPIB OPERATION ML24XXA NATIVE COMMANDS Syntax: MODLIM <state> value: TRUE or FALSE Remarks: When set to TRUE, produces an SRQ and autodials the phone number (set with MODPH) when a channel limits failure occurs. See Section 5-10 for more information on modem operation. Query: MODLIM? Returned MODLIM <true>...
Page 143 ML24XXA NATIVE COMMANDS GPIB OPERATION Syntax: MODRED <count> count: 0 to 10 Remarks: Sets the number of retrys after a failure to connect. The delay between retrys is set using MODDEL. See Section 5-10 for more information on mo- dem operation. Query: MODRED? Returned MODRED <count>...
Page 144 The format is as follows: GD <number_of_elements>,<element_1>,<element_2>,<ele- ment_n>...<\n> The first number in the string is the number of elements to follow, and is al- ways 200 for the ML2430A Series. Return display channel reading DATA OUTPUT Syntax: O <c> 1 or 2 Remarks: Readout and Power vs.
Page 145 ML24XXA NATIVE COMMANDS GPIB OPERATION port: 1 or 2 1 or 2 Remarks: This command changes the channel represented by BNC output modes that can take data from either channel 1 or 2, such as “Analog Output” and “Pass/Fail” modes. Query: OBCH? <port>...
Page 146 GPIB OPERATION ML24XXA NATIVE COMMANDS Query: OBDST? <port> Returned OBDST <port>,<units>,<val> String: OBMD BNC output mode select Syntax: OBMD <port>,<mode> 1 or 2 port: mode: 'OFF' (output set to ground) port 1 or 2 'AOUT' (analog scaled output) port 1 or 2 'PASS/FAIL' (pass/fail) port 1 or 2 'SIGA' (signal output sensor A) port 1 only ‘LVLA1’...
Page 147 ML24XXA NATIVE COMMANDS GPIB OPERATION port: 1 or 2 –5.00 to +5.00 Volts val: Remarks: Sets up the stop value for the voltage output in analog output mode. At- tempting to set the start value to a voltage greater than the stop value, or the stop value lower than the start value, will result in an execution error.
Page 148 GPIB OPERATION ML24XXA NATIVE COMMANDS OFFFIX Offset fixed value SENSOR Syntax: OFFFIX <s>,<val>[units] A or B val: –99.999 to +99.999 units: Remarks: The value added to the sensor if the offset type is set to FIXED. Example: To set the fixed offset for sensor A to -47 dBm: OFFFIX A,-47DB Query: OFFFIX? <s>...
Page 149 ML24XXA NATIVE COMMANDS GPIB OPERATION Returned OFFTBL <s>,<val> String: OFFTBR Output an offset table SENSOR Syntax: OFFTBR <val> 1 to 5 val: Remarks: Outputs the selected offset table. The returned string is constructed as fol- lows: OFFTBR #<length><number_of_bytes>,<element1<element2><ele- mentn> Where <length> is the character size of the <number_of_bytes> field and <number_of_bytes>...
Page 150 GPIB OPERATION ML24XXA NATIVE COMMANDS –10.234 becomes 10479, converted to hexadecimal FFFFD711. See the programming examples for more detail. OFFTYP Offset type to use SENSOR Syntax: OFFTYP <s>,<type> A or B type: FIXED TABLE Remarks: Selects the type of offset to use. OFF = No offset to be used.
Page 151 The format is as follows: OGD <number_of_elements>,<element_1>,<element_2>,<ele- ment_n>...<\n> The first number in the string is the number of elements to follow, and is al- ways 200 for the ML2430A Series. OGSD Output Valid Samples Array (power vs. time mode only) DATA OUTPUT...
Page 152 PWRTIM = graph of channel power versus time SRCSWP = source sweep graphic display To use Graph output commands, the ML2430A Series must be in Profile or Power vs. Time mode. To use the output channel data commands, the ML2430A Series must be in the digital readout mode.
Page 153 ML24XXA NATIVE COMMANDS GPIB OPERATION and measurement channel setups. When in Readout mode, the Channel 1 and Channel 2 values, and the max/min values if present, are printed below the header. In Profile and Power vs. Time modes, a graph is printed out below the header with all the details shown.
Page 154 GPIB OPERATION ML24XXA NATIVE COMMANDS range 3 upper, range 3 lower, range 4 upper, range 4 lower, range 5 up- per, range 5 lower. Relative control CHANNEL Syntax: REL <c>,<mode> 1 or 2 mode: 0 Turn OFF 1 Turn ON and reference 2 Turn ON, use old references if not first time.
Page 155 Remarks: EXTCOM = External communication. GPIB commands are sent and re- ceived via an RS232 connection. SRCSWP = Source sweep. Connected to a sweeper so updates to the sweepers power of frequencies etc. are automatically updated on the ML2430A Series also. Query: RSMODE? Returned String: RSMODE <s>...
Page 156 GPIB OPERATION ML24XXA NATIVE COMMANDS Remarks: Normally when the system is powered on the ML2430A Series returns to the state it was in when it was powered off. This includes all the offset ta- bles, calibration adjust values, etc. If Secure is set to ON, non-volatile memory is disabled and all stored val- ues are reset to the factory defaults when the system is powered on.
Page 157 ML24XXA NATIVE COMMANDS GPIB OPERATION SENSTL Set Sensor Settle Percentage SENSOR Syntax: SENSTL <s>,<val> A or B val: 0.01 to 10% Remarks: Sets how long the system waits for the signal to settle. The value parame- ter is only used in DEFAULT measurement sensor mode. The settling time allows some control over the tradeoff between speed, and the extent to which a measurement has settled to its final value.
Page 158 GPIB OPERATION ML24XXA NATIVE COMMANDS Remarks: Determines the stop frequency when in frequency sweep mode. Query: SRCSPFRQ? Returned SRCSPFRQ <frequency> String: SRCSPPWR Source Sweep Stop Power SYSTEM Syntax: SRCSPPWR <power_value> power value: power Remarks: Determines the stop power level of power sweep mode. Query: SRCSPPWR? Returned String:...
Page 159 ML24XXA NATIVE COMMANDS GPIB OPERATION power power value: Remarks: Determines the start power level of power sweep mode. Query: SRCSTPWR? Returned SRCSTPWR <power> String: START Initial startup self test command GPIB SETUP Syntax: START Remarks: This is useful for ATE control. After the system has been given time to start up, this command can be used to find out what state the system is in.
Page 160 GPIB OPERATION ML24XXA NATIVE COMMANDS B–A, '5' = A/B, '6' = B/A, '7' = EXT Volts. D = Channel 1 units: '0' = dBm, '1' = Watts, '2' = Volts, '3' = dBmV, '4' = dBmV. E = Channel 2 units: '0' = dBm, '1' = Watts, '2' = Volts, '3' = dBmV, '4' = dBmV.
Page 161 ML24XXA NATIVE COMMANDS GPIB OPERATION V = Sensor A zeroed status: '0' = Not zeroed, '1' = Zeroed. W = Sensor B Zeroed status: '0' = Not zeroed, '1' = Zeroed. X = GPIB trigger mode: '0' = TR0 hold ON, '1' = Free run. Y = GPIB group trigger mode: '0' = GTO, '1' = GT1, '2' = GT2.
Page 162 NARY output that allows the stored setup to be programmed into other ML2430A Series power meters and stores via the SYSLD command. If a request for a store number that has not had a setup stored into it is made, an execution error event will be set in the Event Status Register (ESR).
Page 163 ML24XXA NATIVE COMMANDS GPIB OPERATION Related Commands: SYSLD TEXT User text command SYSTEM Syntax: TEXT <text string> text string: Text string of up to 20 characters Remarks: Defines the text string that will be displayed using the TEXTS command. Related Commands: TEXTS Query: TEXT? Returned...
Page 164 GPIB OPERATION ML24XXA NATIVE COMMANDS Related Commands: TR1, TR2, TR3, *TRG, Group Execute Trigger (GET), GT0, GT1, GT2 Trigger immediate GPIB TRIGGER Syntax: TR1 <c> 1 or 2 Remarks: Triggers a single reading which is added to the internal digital filter and the updated filter power level is returned on the GPIB.
Page 165 Commands: TR0, TR1, TR3, *TRG, Group Execute Trigger (GET), GT0, GT1, GT2 Trigger free run GPIB TRIGGER Syntax: TR3 Remarks: Sets the ML2430A Series back into free run mode on both channels. Related TR0, TR1, TR2, *TRG, Group Execute Trigger (GET), GT0, GT1, GT2 Commands:...
Page 166 GPIB OPERATION ML24XXA NATIVE COMMANDS 1, 2 or 1&2 0.0 to 1.0 seconds val: Remarks: The time the system waits after a trigger event has happened before taking measurements when in READOUT or POWER vs. TIME mode. Select channel 1, 2 or 1&2. Selecting 1&2 allows both channels to trigger together on the same conditions without having to set up two sets of trig- ger data.
Page 167 ML24XXA NATIVE COMMANDS GPIB OPERATION Remarks: If the Trigger source is set to INTA or INTB (internal A or B) the system triggers on a rising or falling power level edge. Use this command to set the level the channel must rise above or fall below before it triggers when in READOUT or POWER vs.
Page 168 GPIB OPERATION ML24XXA NATIVE COMMANDS MANUAL (manual push button trigger) CONT (continuous) Remarks: This command is overridden by the TR0, TR1 and TR2 commands when in READOUT or POWER vs. TIME mode. If TR3 is sent, the trigger source reverts back to the previously selected type of triggering. Select channel 1, 2 or 1&2.
Page 169 ML24XXA NATIVE COMMANDS GPIB OPERATION type: RISE FALL Remarks: Sets the control type of the external trigger input used when the trigger source is set to EXTTTL in READOUT or POWER vs. TIME mode. Select channel 1, 2 or 1&2. Selecting 1&2 allows both channels to trigger together on the same conditions without having to set up two sets of trig- ger data.
Page 170: Gpib Emulation Modes
GPIB OPERATION GPIB EMULATION MODES 6-11 GPIB EMULATION The ML2430 Anritsu power meter emulates the GPIB communication of other MODES power meters. The emulation mode can be set through the front panel SYSTEM|more|more|Rear panel|GPIB|MODE menu (see Chapter 4, Operation) or through the GPIB command EMUL (page 6-86). The available emulation...
Page 171: Ml4803A Emulation Commands
ML4803A This section provides an alphabetical listing of the GPIB commands (mnemonics) EMULATION used to program the Model ML2430A Series Power Meter in ML4803A mode. The emulation mode can be set through the front panel COMMANDS SYSTEM|more|more|Rear panel|GPIB|MODE menu (see Chapter 4, Operation) or through the GPIB command EMUL (page 6-86).
Page 172 ODT for the cal factor, offset and reference values, and OMR for mem- ory store settings. If these output requests are received simultaneously, only the data for the command received last will be available. Unsupported The following ML4803A commands are not supported in the ML2430A Series Power Meter GPIB interface: Commands DBV50...
Page 173 GPIB command REF. EMUL GPIB emulation mode Syntax: EMUL <mode> mode: ML24XX (Anritsu ML2430A Series native mode) HP436A (Hewlett-Packard) HP437B (Hewlett-Packard) HP438A (Hewlett-Packard) ML4803 (Anritsu ML4803A Series) Remarks: Set the GPIB emulation to emulate other types of power meters. This com- mand is available in any emulation mode, and resets the whole GPIB inter- face when the emulation mode is changed.
Page 174 GPIB OPERATION ML4803A EMULATION COMMANDS When selecting GPIB emulation modes, the instrument configures itself to the preset conditions of the instrument to be emulated. For example, when selecting HP 438A emulation, the front panel menus pass through the pre- sets for the HP 437B (which presets sensor A to dBm) then selects HP 438A emulation (which presets sensor A to Watts).
Page 175 ML4803A EMULATION COMMANDS GPIB OPERATION Clears the reference value at the specified memory loca- tion. Syntax: MCR<mem> mem: Memory location 1 to 30. Remarks: Clears the reference value at memory store <mem> to 0.0 dBm. Clears all the entries at the specified memory location. Syntax: MCT<mem>...
Page 176 GPIB OPERATION ML4803A EMULATION COMMANDS Set the offset value at the specified memory location in dBm. Syntax: MOF<mem><;><value> mem: Memory location 1 to 30. Offset value in dBm. value: Remarks: Set the offset value at memory store address <mem> to <value> dBm Set the reference value at the specified memory location in dBm.
Page 177 ML4803A EMULATION COMMANDS GPIB OPERATION Set sensor offset value Syntax: OFF<value> value: Offset value to add to the sensor reading. Request identity Syntax: OI? Remarks: Response: <ML4803> Output a memory store set of data. Syntax: OMR<mem> mem: Memory location 1 to 30. Remarks: Output a memory store set of data.
Page 178 GPIB OPERATION ML4803A EMULATION COMMANDS Request for channel reading. Remarks: Outputs measuring condition, measured data, and status. CR and LF codes are automatically output and executed after each line of 22 ASCII characters when the OPW command is used. The format of the returned data is: 9 10 11 12 13 14 15 16 17 18 19 20 21 22 <CR><LF>...
Page 179 ML4803A EMULATION COMMANDS GPIB OPERATION Output Code Contents Function AUTO RANGE highest sensitivity 1 ARG1 ARG2 ARG3 ARG4 ARG5 lowest sensitivity 5 AVE0 AVERAGE AVE9 HOLD AVE1 1 (1 second interval) AVE2 2 (2 second interval) AVE3 3 (5 second interval) 4 (10 second interval) AVE4 Space...
Page 180 GPIB OPERATION ML4803A EMULATION COMMANDS As shown in the examples above, the dBm data is output in fixed rotation, while the WATT data is output in scientific notation. The exponent may be converted as follows: 1.000W = 1.000E–0 1.000 mW = 1.000E–6 1.000 mW = 1.000E–3 100.0 nW = 100.0E–9 100.0 mW = 100.0E–6...
Page 181 ML4803A EMULATION COMMANDS GPIB OPERATION Remarks: When SRQ0 is issued, the SRQ will no long turn off and on with each reading. The SRQ is set back on by the SRQ1 command or by requesting data. Restart averaging reading. Sets the display channel units to Watts. Remarks: Turns off relative mode.
Page 182 HP 436A This section provides an alphabetical listing of the commands (mnemon- EMULATION ics) used to program the Model ML2430A Series Power Meter when in HP 436A Emulation mode. The emulation mode is set through the front panel COMMANDS SYSTEM|Rear Panel|GPIB|MODE menu (see Chapter 4, Operation) or through the GPIB command EMUL (page 6-96).
Page 183 Remarks: Set to dB units in relative mode using the present relative reference value, and enable the application of the calfactor. Remarks: Set units to dBm. EMUL Select emulation mode Syntax: EMUL <mode> ML24XX (Anritsu ML2430A Series native mode) mode: HP436A (Hewlett-Packard) HP437B (Hewlett-Packard) HP438A (Hewlett-Packard) ML4803 (Anritsu ML4803A Series) Remarks: Sets the GPIB emulation to emulate other types of power meters.
Page 184 Identification Remarks: Ask for identification of current operating mode. Responds with “HP436.” Free run mode Remarks: Sets the ML2430A Series back into free run mode to continuously take measurements and output data. Trigger with settling Remarks: Triggers a new series of readings; enough to update the internal digital fil- ter for a noise free reading at the current power level.
Page 185: Hp 436A Emulation Commands
HP 436A EMULATION COMMANDS GPIB OPERATION Output Format The output data format for the HP 436A emulation mode is shown below. Sign of Measured Measured Value Value Decimal - EXPONENT Range space (+) or “-” Multiplier 10 Point Character - 10 11 0 1 2 3 4 5 6 7 CR LF Number...
Page 186 GPIB OPERATION HP 436A EMULATION COMMANDS Table 6-2 HPIB Output Data Format Definition Character STATUS ASCII Decimal Measured value valid Watts mode under range Over range Under range dBm or dB (Rel) mode Power Sensor Auto Zero loop enabled; range 1 under range Power Sensor Auto Zero loop enabled;...
Page 187 This section provides an alphabetical listing of the commands (mnemon- COMMANDS ics) used to program the Model ML2430A Series Power Meter when in HP 437B Emulation mode. The emulation mode can be set through the front panel SYSTEM|Rear Panel|GPIB|MODE menu (see Chapter 4, Opera- tion) or through the GPIB command EMUL (page 6-105).
Page 188: Hp 437B Emulation Commands
GPIB OPERATION HP 437B EMULATION COMMANDS Standard 7 6 5 4 3 2 1 0 Event Status Register *ESR? Queue not empty Output Queue Standard Event Status Enable Register *ESE <NR > 7 6 5 4 3 2 1 0 *ESE? read by Serial Poll Service...
Page 189 Reset Device Syntax: *RST Remarks: Resets the ML2430A Series to the default configuration (see Appendix A, Section A-3, or see the HP manual when in HP 437B emulation mode). Offset tables are not cleared. The GPIB ADDRess and EMULation settings are not changed, and the input queue, output queue, and status registers on the GPIB are not cleared.
Page 190 GPIB OPERATION HP 437B EMULATION COMMANDS Remarks: Performs a self test and returns 000.' Related Commands: STERR Set SRE mask Syntax: @1<val> val: 8-bit mask Remarks: Status Byte Structure: Bit 0: Data ready Bit 1: Cal/Zero complete Bit 2: Entry Error Bit 3: Measurement error Bit 4: Over/Under limit Bit 5: Event Status Register...
Page 191 HP 437B EMULATION COMMANDS GPIB OPERATION Remarks: Same as the *CLS command. Resets all of the GPIB status registers and clears the input queue. Clear the cal factor table Syntax: CT<table_number> table 0 to 9 number: Remarks: Clears the specified cal factor table to a single 50mhz entry at 100%. Since the ML2430A stores the cal factor table information in the sensor, this data must be saved to the sensor by using the ‘EX’...
Page 192 %, PCT, or EN terminator: Remarks: Sets the duty cycle to be applied to the input signal. EMUL GPIB emulation mode Syntax: EMUL <mode> ML24XX (Anritsu ML2430A Series native mode) mode: HP436A (Hewlett-Packard) HP437B (Hewlett-Packard) ML2430A OM 6-105 www.valuetronics.com...
Page 193 HP 437B EMULATION COMMANDS GPIB OPERATION HP438A (Hewlett-Packard) ML4803 (Anritsu ML4803A Series) Remarks: Set the GPIB emulation to emulate other types of power meters. This com- mand is available in any emulation mode, and resets the whole GPIB inter- face when the emulation mode is changed.
Page 194 GPIB OPERATION HP 437B EMULATION COMMANDS Auto average Syntax: FA Remarks: Automatic Filter on. Allows the system to automatically select the filter used to reduce the jitter in the display. Related Commands: FM, FH average hold Syntax: FH Remarks: Hold filter sets the filter mode to Manual from Auto, but retains the auto fil- ter setting.
Page 195 HP 437B EMULATION COMMANDS GPIB OPERATION Example: To set the frequency of the input signal to 300 MHz: FR300MZ Set group trigger Syntax: GT<mode> mode: Remarks: 0 = Ignore Group Execute Trigger (GET) command 1 = Trigger immediate response to ‘GET’ command 2 = Trigger with delayed response to ‘GET’...
Page 196 GPIB OPERATION HP 437B EMULATION COMMANDS terminator: Remarks: The calibration factor compensates for mismatch losses and effective effi- ciency over the frequency range of the power sensor. Example: KB99.9% KB99.9PCT KB99.9EN Set log units Syntax: LG Remarks: Changes the display to log units (dBm). Set high limit Syntax: LH<val>EN val:...
Page 197 'OD' command. The ML2430A Series supports the 'OD' command to the extent that it will output a formatted display channel reading in either dBs or Watts, and will also output the cal factor tables.
Page 198 Remarks: Presets the unit to the HP factory defaults. This command does not effect the calibration factors stored in the sensor data tables. Auto Range Syntax: RA Remarks: Sets the ML2430A Series to automatically select the correct range for the measurement. Recall setup Syntax: RC<val>EN...
Page 199 GPIB OPERATION val: 1 to 10 Remarks: The ML2430A Series can store up to 10 instrument configurations for con- venient recall. The configuration parameters stored are the same parame- ters the ML2430A Series stores in its own *SAV and *RCL native commands.
Page 200 GPIB OPERATION HP 437B EMULATION COMMANDS Relative mode Syntax: RL<mode> mode: Remarks: Relative mode permits any measurement result to be compared in dB or percent to a reference value. Relative mode can be enabled using the cur- rent power reading (RL1) or the previous reference level (RL2). Successive measurements are displayed relative to this reference value.
Page 201 HP 437B EMULATION COMMANDS GPIB OPERATION Remarks: Selects the cal factor table to be used. status message Syntax: SM Remarks: Returns the status message in the format: AAaaBBCCccDDddEFGHIJKLMNOP<cr><lf> where: AA: measurement error code aa: entry error code BB: operating mode CC: sensor A range cc: 0 DD: sensor A filter...
Page 202 GPIB OPERATION HP 437B EMULATION COMMANDS Remarks: Stores the present configuration to the selected register. Example: To store the current instrument configuration in register 2: ST2EN Related Commands: RC Save cal factor table Syntax: SV Remarks: Since the ML2430A stores the cal factor tables in the sensors, this command forces the edits to a cal factor table to be saved to the sensor.
Page 203 Commands: TR0, TR1, TR3, *TRG, Group Execute Trigger (GET), GT0, GT1, GT2 Trigger free run Syntax: TR3 Remarks: Sets the ML2430A Series back into free run mode on both channels. Related Commands: TR0, TR1, TR2, *TRG, Group Execute Trigger (GET), GT0, GT1, GT2...
Page 204: Hp 438A Emulation Commands
The end of the command text must be terminated with a line feed charac- ter (0Ah, decimal 10) or a GPIB End of Transmission State (EOI), or both. The ML2430A Series in HP 438A emulation mode also supports the HP 437B cal factor table edit and read commands.
Page 205 HP 438A EMULATION COMMANDS GPIB OPERATION Remarks: Display the Input A reading minus the Input B reading. Set single sensor A display Syntax: AP Remarks: Set the display to output Input A readings. Set display A / B Syntax: AR Remarks: Display the Input A reading divided by the Input B reading.
Page 206 GPIB OPERATION HP 438A EMULATION COMMANDS terminator: Remarks: Same as the ML24XXA (native) CFADJ command. Sets a calibration factor to be used when performing a 0 dBm calibration. Examples: CL98.5EN CL98.5% CL98.5PCT Clear all status bytes Syntax: CS Remarks: Same as the *CLS command. Resets all of the GPIB status registers and clears the input queue.
Page 207 Remarks: Changes the device address when operating in HP emulation mode. The power meter default address is 13. EMUL GPIB emulation mode Syntax: EMUL <mode> ML24XX (Anritsu ML2430A Series native mode) mode: HP436A (Hewlett-Packard) HP437B (Hewlett-Packard) HP438A (Hewlett-Packard) ML4803 (Anritsu ML4803A Series) Remarks: Set the GPIB emulation to emulate other types of power meters.
Page 208 GPIB OPERATION HP 438A EMULATION COMMANDS Remarks: Hold filter sets the filter mode to Manual from Auto, but retains the auto fil- ter setting. This function is the same as the AVGM command. Related Commands: FM, FH, FA Set average value Syntax: FM<val>EN val: 0 to 9...
Page 209 HP 438A EMULATION COMMANDS GPIB OPERATION Remarks: The calibration factor compensates for mismatch losses and effective effi- ciency over the frequency range of the power sensor. Examples: KB99.9% KB99.9PCT KB99.9EN Set log units Syntax: LG Remarks: Changes the display to log units (dBm). Set high limit Syntax: LH<val>EN –99.999 to +99.999 (dBm only)
Page 210 GPIB OPERATION HP 438A EMULATION COMMANDS Set linear units Syntax: LN Remarks: Changes the display to linear units (Watts). Set calibrator state Syntax: OC<state> 0 (OFF) state: 1 (ON) Remarks: For example: OC0 (reference calibrator state set to OFF). HP Identity request Syntax: OI Remarks: The format of the returned string is: <Company name>,<model>,<serial>,<firmware version>...
Page 211 Measurement parameters (set for Sensor A and Sensor B): Cal Factor = 100.0% Cal Adj = 100.0% Offset = 0.00 dB Auto Range Syntax: RA Remarks: Sets the ML2430A Series to automatically select the correct range for the measurement. Recall setup Syntax: RC<val>EN val: 1 to 10 Remarks: The ML2430A Series can store up to 10 instrument configurations for con- venient recall.
Page 212 GPIB OPERATION HP 438A EMULATION COMMANDS mode: Remarks: Relative mode permits any measurement result to be compared in dB or percent to a reference value. Relative mode can be enabled using the cur- rent power reading (RL1) or the previous reference level (RL2). Successive measurements are displayed relative to this reference value.
Page 213 HP 438A EMULATION COMMANDS GPIB OPERATION CC: sensor A range cc: sensor B range DD: sensor A filter dd: sensor B filter E: measurement units F: active entry channel G: OSC status H: REL mode status I: trigger mode J: group trigger mode K: limits checking status L: sensor A limits status M: sensor B limits status...
Page 214 Commands: TR0, TR1, TR3, *TRG, Group Execute Trigger (GET), GT0, GT1, GT2 Trigger free run Syntax: TR3 Remarks: Sets the ML2430A Series back into free run mode on both channels. Related Commands: TR0, TR1, TR2, *TRG, Group Execute Trigger (GET), GT0, GT1, GT2...
Page 215: Programming Examples
The following programming examples are provided as a general guideline on how EXAMPLES to program the ML2430A Series Power Meters using GPIB commands. All exam- ples are written in Visual Basic or C language. The GPIB-specific calls are for the National Instruments GPIB DLL.
Page 216 GPIB OPERATION PROGRAMMING EXAMPLES Get Graph Data Function GetGraphData () ‘ function assumes that you have the graph display ‘ setup and that there is a global array called ‘ Graph_Data(). ‘ make space for the result Dim result As String result = String$(2048, 0) ‘...
Page 217 PROGRAMMING EXAMPLES GPIB OPERATION Status This function demonstrates how to use the Status Registers to provide synchroni- zation. Register Control Uses the TR2 (trigger with settling) command to make a reading. Function GetTR2Reading (channel) As Single ‘ make space for the result Dim result As String result = String$(10, 0) ‘...
Page 218 Result_Code% argument. For example: Use 4882SendReceive(0, 13, “O 1”, Result$, Result_Code%) to re- turn a reading from the ML2430A Series. Note that this function is written in “pseudo code” and cannot be executed as is.
Page 219 PROGRAMMING EXAMPLES GPIB OPERATION 4882SendReceive= Execution_Error ElseIf (Val(ESB) And DEVICE_ERR_bit) Then 4882SendReceive = Device_dependent_Error End If End Function 6-132 ML2430A OM www.valuetronics.com...
Page 220 GPIB OPERATION PROGRAMMING EXAMPLES Binary Output The following program example may be used to decode the three types of binary output messages. The commands that reference this code example are OGBD, Message Decoding MXGDB and MNGDB for the GRAPH_BINARY_DATA decoding; OFFTBR for the OFFSET_TABLE_BINARY_DATA decoding;...
Page 221 PROGRAMMING EXAMPLES GPIB OPERATION /* Read and cast the data */ while (count < length) real_data1[loop++] = ((float)(*bin_value++))/1024.0; count += 4; real1_entries = loop; else if (decode_type == OFFSET_TABLE_BINARY_DATA) /* Decode header */ /* Find # character. */ cptr = strtok(&buffer[0],"#"); cptr = strtok(NULL,"#");...
Page 222 GPIB OPERATION PROGRAMMING EXAMPLES else if (decode_type == CAL_FACTOR_BINARY_DATA) /* Decode header */ /* Read length of binary data*/ ch_val[0] = buffer[6]; ch_val[1] = buffer[7]; ch_val[2] = NULL; length = atoi(ch_val); /* Point after the comma */ cptr = &buffer[9]; /* Read the table identity */ count = 8;...
Page 223: Appendix A Specifications
Appendix A Specifications This appendix provides system specifications for the ML2430A Series INTRODUCTION Power Meters along with listings of system defaults and error messages. This section provides overall system specifications. SYSTEM SPECIFICATIONS Frequency 10 MHz to 90 GHz (sensor dependent)
Page 224: System Specifications
SYSTEM SPECIFICATIONS APPENDIX A Instrument Ac- < 0.5 % curacy: Zero Set and < 0.5 % MA2420A; < 0.5 % MA2470A Series and MA2440A Series. Percent of full scale in most sensitive Drift: range, measured over one hour with maximum averag- ing after one hour warm up at constant temperature.
Page 225: System Configuration
APPENDIX A SYSTEM SPECIFICATIONS Cursors: Two manually adjustable cursors with power, delta cur- sor power, between cursor power average, and delta time readout display. Delta t Resolution: 0.5% of display period or 100 ns TRIGGERING Trigger Sources: Internal , External TTL, GPIB, Manual, Continuous 0.01 to 1000.00 milliseconds Delay Range: Delay...
Page 226 SYSTEM SPECIFICATIONS APPENDIX A Cal Factor Volt- Operating Modes: Voltage: Display voltage reading on selected channel. Input Voltage proportional to frequency for sensor calibration (BNC): factor compensation. Blanking Input: TTL levels only. Selectable positive or negative polarity. Input Range: 0 Resolution: 0.5 mV to 20V Adjustable voltage to frequency relationship...
Page 227 APPENDIX A SYSTEM SPECIFICATIONS Display: Flat panel monochrome LCD graphic with backlight. Operating Tem- perature 0 to 50° C (32 to 122° F) Range: Storage Temperature –40 to +70° C (–40 to +156° F) Range: Moisture: Splash and rain resistant, 90% humidity, non-condensing AC: 90 to 250 VAC, 47 to 440 Hz, 40 VA Maximum Power...
Page 228: System Defaults
SYSTEM DEFAULTS APPENDIX A SYSTEM DEFAULTS The following default parameters are loaded whenever preset is selected from the front panel or through GPIB. SENSOR - setup settle % per reading 0.10% measurement mode default range hold auto SENSOR - cal factor Source Frequency source ( HP 437B &...
Page 229 APPENDIX A SYSTEM DEFAULTS frequencies 0 Hz offset values 0 dB SENSOR - duty cycle duty cycle state duty cycle 100% CHANNEL - setup input config chan 1 = A, chan 2 = off input config ( HP 437B & HP 438A ) chan 1 = A, chan 2 = off meas units meas units ( HP 437B )
Page 230 SYSTEM DEFAULTS APPENDIX A SYSTEM - setup = profile TRIGGER - setup source continuous sample delay 1 ms sample gate width 20 ms source = continuous, manual trigger arming blanking off source = internal A, internal B trigger arming blanking off trigger type rise trigger level...
Page 231 APPENDIX A SYSTEM DEFAULTS SYSTEM - display battery backlight display contrast peak meter display frequency/offset display GPIB user text display backlight = timed time 5 minutes SYSTEM - sound key click state edit error beep limits fail beep channel 1 limits fail beep channel 2 cursor off screen beep SYSTEM - battery (if present)
Page 232 SYSTEM DEFAULTS APPENDIX A output 2 only mode = RF blanking channel output TTL during zero high input 1 blanking active TTL level high SYSTEM - rear panel - printer printer type HP Deskjet 340 (factory preset only) SYSTEM - graphics connect graph points tracking min max single sweep...
Page 233: System Error Messages
MESSAGES pear. In most cases, the error condition can be easily corrected. If not, note the error message and contact the nearest Anritsu Service Center (see Chapter 2, Table 2-3). Errors shown here with xxxx in the display contain a numeric error code.
Page 234 SYSTEM ERROR MESSAGES APPENDIX A Error Message Meaning SENSOR A not fitted Sensor A is required for the current measurement, but is not fitted. READING SENSOR A data as per message SENSOR B not fitted Sensor B is required for the current measurement, but is not fitted.
Page 235: Appendix Bgpib Quick Reference
Appendix B GPIB Quick Reference This appendix contains quick reference tables for all supported com- INTRODUCTION mands. Native mode commands are sorted by functional group. For de- tailed command explanations, refer to the page references listed. ML24XXA QUICK The following tables reference ML24XXA (native) mode commands. A REFERENCE command followed by a (?) indicates that there is an equivalent query command for that function (see Table B-13).
Page 236 ML24XXA QUICK REFERENCE APPENDIX B Table B-3. Channel Functional Group Commands Command Function Page CHCFG(?) Channel input configuration 6-28 CHRES(?) Set channel decimal point resolution 6-28 CHUNIT(?) Set Channel units 6-28 FHOLD(?) Fail indicators Hold 6-38 HLIM(?) Set High limits 6-49 HLIMS(?) Turn on/off High limits...
Page 237 APPENDIX B ML24XXA QUICK REFERENCE Table B-6. GPIB 488.2 Functional Group Commands Command Function Page *CLS Clear GPIB status bytes 6-12 *ESE Event Status Byte enable 6-7, 6-12, 6-100 *ESE? Return Event status register enable mask 6-14 *ESR? Event status register request 6-14 *IDN? Request device identification...
Page 238 ML24XXA QUICK REFERENCE APPENDIX B Table B-9. Profile Setup Functional Group Commands Command Function Page CURLK(?) Link cursors in profile mode 6-30 DTRGD(?) Display Trigger Delay 6-34 GRAVG(?) Average between profile cursors 6-40 GPRST Reset min/max graph 6-40 GRCP(?) Connect points on profile 6-40 GRDATA(?) Display Graph Data...
Page 239 APPENDIX B ML24XXA QUICK REFERENCE Command Function Page OFFCLR Clear an offset table 6-60 OFFFIX(?) Offset fixed value 6-61 OFFTBL(?) Select an offset table 6-61 OFFTBR Output an offset table 6-62 OFFTBU Update an offset table 6-62 OFFTYP(?) Offset type to use 6-63 OFFVAL Sensor Offset Value...
Page 240: Ml24Xxa Quick Reference
ML24XXA QUICK REFERENCE APPENDIX B SRCSTAT Source sweep status request 6-71 SYSLNM Saved set naming 6-75 TEXT(?) User text command 6-76 TEXTS(?) User text display command 6-76 Table B-12. Trigger Functional Group Commands Command Function Page GTARM(?) Set profile trigger arming 6-46 GTDLY(?) Set profile trigger sample delay...
Page 241 APPENDIX B ML24XXA QUICK REFERENCE Query Returned String Page DBLTIM? DBLTIM <VAL> 6-32 DCONT? DCONT <VAL> 6-32 DISP? DISP <STATE> 6-33 DPEAK? DPEAK <MODE> 6-33 DTRGD? DTRGD <VAL> 6-34 DUTY? <S> DUTY <S>,<DUTY CYCLE> 6-34 DUTYS? <S> DUTYS <S>,<STATE> 6-35 ENTERR? ENTERR <STATE>...
Page 242 ML24XXA QUICK REFERENCE APPENDIX B Query Returned String Page OBDSP? <PORT> OBDSP <PORT>,<UNITS>,<VAL> 6-45 OBDST? <PORT> OBDST <PORT>,<UNITS>,<VAL> 6-58 OBMD? <PORT> OBMD <PORT>, <MODE> 6-59 OBPL? <PORT> OBPL <PORT>,<LEVEL> 6-59 OBVSP? <PORT> OBVSP <PORT>,<VAL> 6-59 OBVST? <PORT> OBVST <PORT>,<VAL> 6-60 OBZL? OBZL <LEVEL>...
Page 243: Ml4803A Quick Reference
APPENDIX B ML4803A QUICK REFERENCE ML4803A QUICK The following tables reference ML4803A emulation mode commands. REFERENCE Table B-14. ML4803A Emulation Mode Commands Command Function Page Sensor averaging setting 6-85 Set the user cal factor value 6-65 Clear the user cal factor to zero 6-86 Perform a Cal 0 dBm 6-86...
Page 244: Hp 436A Quick Reference
HP 436A QUICK REFERENCE APPENDIX B HP 436A QUICK The following table references HP 436A emulation mode commands. REFERENCE Table B-15. HP 436A Emulation Mode Commands Command Function Page Disable cal factors 6-95 – Enable cal factors 6-95 1, 2, 3, 4 & 5 Set sensor operating range 6-95 Auto range...
Page 245: Hp 437B Quick Reference
APPENDIX B HP 437B QUICK REFERENCE HP 437B QUICK The following table references HP 437B emulation mode commands. REFERENCE Table B-16. HP 437B Emulation Commands Command Function Page *CLS Clear GPIB status bytes 6-12, 6-100 *ESE Event Status Byte enable 6-7, 6-12, 6-100 *ESE?
Page 246 HP 437B QUICK REFERENCE APPENDIX B Command Function Page Set group trigger 6-108, 6-121 Return identification string 6-108 IDN? HP437 identity request 6-108 Calibration factor 6-108, 6-121 Set log units 6-109, 6-122 Set high limit 6-109, 6-122 Set low limit 6-109, 6-122 Limits check state...
Page 247 APPENDIX B HP 437B QUICK REFERENCE Command Function Page Trigger immediate 6-77, 6-115, 6-126 Trigger with a settling delay 6-77, 6-115, 6-127 Trigger free run 6-78, 6-116, 6-127 Zero sensors 6-116, 6-127 ML2430A OM B-13 www.valuetronics.com...
Page 248: Hp 438A Quick Reference
HP 438A QUICK REFERENCE APPENDIX B HP 438A QUICK The following table references HP 438A emulation mode commands. REFERENCE Table B-17. HP 438A Emulation Commands Command Function Page Return ID string 6-117 Set SRE mask 6-103 Config to A-B 6-117 Config to A 6-118 Set display A / B...
Page 249 APPENDIX B HP 438A QUICK REFERENCE Command Function Page Identification 6-64, 6-97, 6-111, 6-123 Set offset value 6-111, 6-123 Preset the unit 6-111, 6-123 Auto Range 6-111, 6-124 Recall setup 6-111, 6-124 Range hold 6-112, 6-124 Relative mode 6-113, 6-124 Range hold set 6-113, 6-125...
Page 250: Hp-Ib Support
The following tables list HP-IB commands for the HP 437B and HP 438A power meters, and which commands are supported in the Anritsu ML2430A Series power meter. Restrictions, if any, are also listed. Com- mands that are not supported will be ignored.
Page 251 APPENDIX B HP-IB SUPPORT Mnemonic Action Supported? Restrictions Limit check on Both high and low on as HP 437B Units to Watts None Learn mode 1 Not supported Left arrow Not supported Terminator None RF calibrator off None RF calibrator on None Output display text Supports reading output and Cal factor...
Page 252 HP-IB SUPPORT APPENDIX B HP 438A Commands Mnemonic Action Supported? Restrictions Config to A-B None Select sensor A None Config to A None Config A/B None Config to B-A None Select sensor B None Config to B None Config to B/A None CAL 0 dBm None...
Page 253 The HP 438 emulation mode supports the HP 437 cal factor table com- mands on the ML2430A Series. This allows the cal factor tables to up- dated or read since the ML2430A Series supports cal factor tables. ML2430A OM B-19/B-20 www.valuetronics.com...
Page 254: Appendix C Menu Maps
Appendix C Menu Maps The ML2430A Series Power Meter is driven by five main menus; Sensor, Chan- INTRODUCTION nel, Trigger, System, and Cal/Zero, each accessed by a key on the front panel. This appendix contains menu listings representing the levels of the available menus.
Page 255 SENSOR MENU APPENDIX C [CFSRC, CFVAL] SOURCE Frequency | manual | vghz SETUP } if source = VGHz only [CVSTF] START Freq 10kHz to 122GHz [CVSPF] STOP Freq 10kHz to 122GHz [CVSTV] START Volts -0.5V to 20.5V [CVSPV] STOP Volts -0.5V to 20.5V [CFFRQ] Input signal FREQuency...
Page 256 APPENDIX C SENSOR MENU 10kHz to 122GHz determined by fitted sensor FACTOR 150% to 0.07% –1.76dB to 31.55dB DONE DELETE [CFUSAV] SAVE to sensor [CFUCT] CLEAR table [CFUPT] PRESET table [CFUID] IDENTITY up to 7 characters << >> SELECT ENTER exit when values changed but NOT saved to sensor DISCARD CANCEL...
Page 257 SENSOR MENU APPENDIX C A | B Averaging MODE Auto | moving | repeat | off [AVG] Averaging NUMBER } if mode = MOVING or REPEAT 1 to 512 [AVGLL] Auto LOW LEVEL averaging Off \ low \ medium \ high Averaging ( profile and source sweep modes ) [AVG, GSWP] Sensor A average NUMBER...
Page 258 APPENDIX C SENSOR MENU ENTRY 1 to 200 [OFFCLR] CLEAR selected table } if type = TABLE Duty cycle SENSOR } not in ML2437A A | B [DUTYS] Duty cycle STATE On | off [DUTY] DUTY cycle 100% to 0.1% [RGH] Rnge Hold ML2430A OM...
Page 259: Channel Menu
CHANNEL MENU APPENDIX C CHANNEL MENU The Channel menu controls the operation of a display channel. There are two display channels, Channel 1 and Channel 2. Channel 1 appears at the top of the readout display and channel 2 at the bottom. Channel Setup CHANNEL...
Page 260 APPENDIX C CHANNEL MENU [HLIMS] HIGH State On | off [LLIMS] LOW State On | off [FHOLD] Fail indicator HOLD On | off [FBEEP] Fail BEEP control On | off ML2430A OM www.valuetronics.com...
Page 261: Trigger Menu
TRIGGER MENU APPENDIX C TRIGGER MENU The Trigger menus are always available in PROFILE operation mode, as selected from the System menu. In READOUT and POWER vs. TIME modes, the trigger setup menus are available if a sensor used on a display channel has its SENSOR|Setup|MODE set to CUSTOM.
Page 262: System Menu
SYSTEM MENU The System menus control the operating modes, display visibility, sound, rear panel functions, and battery state of the ML2430A Series Power Meter. Note that the soft keys will appear differently depending upon the operation mode selected with the Setup soft key.
Page 263 SYSTEM MENU APPENDIX C PwrVsTime } if system setup mode = Power vs. Time [GRMD] CHANNEL 1 | 2 [GRPIX] DATA HOLD representation Normal | average | min&max | min | max [GRDDT] Data display TIME 1 min to 24 hours Source Sweep } if system setup mode = Source Sweep [GRMD]...
Page 264 APPENDIX C SYSTEM MENU [GRDATA, GRDRQ] READOUT [GPRST] CLEAR [CURLK] LINK CURSOR [HOLD] Graph HOLD [GRAUTO] AUTO scale Display [DBLGHT] Battery BACKLIGHT On | timed | off [DCONTD, DCONT] Set display contrast DOWN 1 to 10 [DCONTU, DCONT] Set display contrast UP 1 to 10 [DBLTIM] TIMED...
Page 265: Gpib Address
SYSTEM MENU APPENDIX C Battery [BAUTS] AUTO power off } if smart battery detected On | off [BAUTT] Auto power off TIME } if smart battery detected 10 to 240 minutes STATUS } if smart battery detected CHARGE Rear Panel GPIB setup menu [ADDR] GPIB ADDRESS...
Page 266 APPENDIX C SYSTEM MENU [MODPWR] POWER on/off True | false BNC setup PORT Output 1, output 2, input 1, input 2 [OBMD] Operating MODE only if port = output 1 or output 2 o/p 1 off | analog out | pass/fail | sig chan A | leveling A1 | leveling A2 | AC Mod output o/p 2 off | analog out | RF blanking | pass/fail | sig chan B | leveling B1 | leveling B2 if mode = ANALOG OUT and port = output 1 or output 2...
Page 267 SYSTEM MENU APPENDIX C if mode = RF BLANKING and port = output 2 [OBCH] CHANNEL 1 | 2 [OBZL] Output TTL during zeroing Low | high if port = input 1 [IBBLP] Blanking active TTL LEVEL Low | high [PRNSEL] PRINTER selection down...
Page 268: Cal/Zero Menu
APPENDIX C CAL/ZERO MENU CAL/ZERO MENU The Cal/Zero menu establishes the 0.0 dBm reference calibration and zeroing of the sensors. Refer to Chapter 5 for specific procedures. NOTE The single sensor channel ML2437A will not display the Sensor B selection option shown below. The Sensor B se- lection will only be displayed on the dual sensor channel ML2438A when both sensors are connected.
Page 269 Index ML24XXA (native) mode ..6-12 - 6-83 ML4803 Emulation ... 6-85 - 6-95 AC ..... 2-1, 3-3, 4-2 query .
Page 270 controls ....4-1 - 4-2 operation ....4-1 maintenance.
Page 271 shipment ....2-10 - 2-11 Sound ..... . . 4-27 rack mount .

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