Anritsu MG3641A Operation Manual
  1. Manuals
  2. Brands
  3. Anritsu Manuals
  4. Test Equipment
  5. MG3641A
  6. Operation manual

Anritsu MG3641A Operation Manual

Anritsu synthesized signal generator operation manual
Hide thumbs Also See for MG3641A:
Table of Contents

Advertisement

Quick Links

Download this manual
MG3641A/MG3642A
Synthesized Signal Generator

Operation Manual

13th Edition
For safety and warning information, please read this
manual before attempting to use the equipment.
Keep this manual with the equipment.
ANRITSU CORPORATION
Document No.: M-W1137AE-13.0

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MG3641A and is the answer not in the manual?

Questions and answers

Related Manuals for Anritsu MG3641A

Summary of Contents for Anritsu MG3641A

  • Page 1: Operation Manual

    MG3641A/MG3642A Synthesized Signal Generator Operation Manual 13th Edition For safety and warning information, please read this manual before attempting to use the equipment. Keep this manual with the equipment. ANRITSU CORPORATION Document No.: M-W1137AE-13.0...

  • Page 2: Safety Symbols

    To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Corporation uses the following safety symbols to indicate safety-related information. Ensure that you clearly understand the meanings of the symbols BEFORE using the equipment. equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.

  • Page 3: For Safety

    For Safety WARNING 1. ALWAYS refer to the operation manual when working near locations at which the alert mark shown on the left is attached. If the advice in the operation manual is not followed there is a risk of personal injury or reduced equipment performance.
  • Page 4 5. The performance-guarantee seal verifies the integrity of the equipment. To ensure the continued integrity of the equipment, only Anritsu service personnel, or service personnel of an Anritsu sales representative, should break this seal to repair or calibrate the equipment.
  • Page 5 1. Always remove the mains power cable from the power outlet before replacing blown fuses. There is a risk of electric shock if fuses are Fuse Replacement replaced with the power cable connected. Always use new fuses of the type and rating specified on the rear panel of the instrument. There is a risk of fire if a fuse of a different rating is used.
  • Page 6 This equipment uses a Poly-carbomonofluoride lithium battery to backup the memory. This battery must be replaced by service personnel when it has reached the end of its useful life; contact the Anritsu sales section or your nearest representative. Note: The battery used in this equipment has a maximum useful life of 7 years.

  • Page 7: Equipment Certificate

    In addition, this warranty is valid only for the original equipment purchaser. It is not transferable if the equipment is resold. Anritsu Corporation shall assume no liability for injury or financial loss of the customer due to the use of or a failure to be able to use this equipment.

  • Page 8: Notes On Export Management

    Notes On Export Management This product and its manuals may require an Export License/Approval by the Government of the product's country of origin for re-export from your country. Before re-exporting the product or manuals, please contact us to confirm whether they are export-controlled items or not. When you dispose of export-controlled items, the products/manuals need to be broken/shredded so as not to be unlawfully used for military purpose.
  • Page 9 2002/96/EC (the “WEEE Directive”) in European Union. For Products placed on the EU market after August 13, 2005, please contact your local Anritsu representative at the end of the product's useful life to arrange disposal in accordance with your initial contract and the local law.

  • Page 10: Ce Conformity Marking

    CE Conformity Marking Anritsu affixes the CE conformity marking on the following product(s) in accordance with the Council Directive 93/68/EEC to indicate that they conform to the EMC and LVD directive of the European Union (EU). 1. Product Model Model:...
  • Page 11 EN 61000-3-2: 2006 (Class A equipment) • LVD: EN 61010-1: 2001 (Pollution Degree 2) 4. Authorized representative Name: Loic Metais European Quality Manager ANRITSU S.A. France Address, city: 16/18 Avenue du Québec SILIC 720 Zone de Courtaboeuf 91951 Les Ulis Cedex Country:...

  • Page 12: C-Tick Marking

    C-tick Conformity Marking Anritsu affixes the C-tick mark on the following product(s) in accordance with the regulation to indicate that they conform to the EMC framework of Australia/New Zealand. C-tick marking 1. Product Model Model: MG3641A/MG3642A Synthesezed Signal Generator 2. Applied Standards...
  • Page 13 Power Line Fuse Protection For safety, Anritsu products have either one or two fuses in the AC power lines as requested by the customer when ordering. A fuse is inserted in one of the AC power lines. Single fuse: Double fuse: A fuse is inserted in each of the AC power lines.

  • Page 15: Table Of Contents

    SECTION 2 PRECAUTION ... 2-1 Installation Precautions ... 2-1 2.1.1 Safety Measures ... 2-2 2.2.1 2.2.2 Mounting the MG3641A/MG3642A in the Frame ... 2-3 Preparation Before Power-On ... 2-4 2.4.1 2.4.2 SECTION 3 PANEL LAYOUT ... 3-1 Panel Layout ... 3-1 3.1.1...
  • Page 16 4.5.4 4.5.5 4.5.6 Setting the Modulation ... 4-18 4.6.1 4.6.2 4.6.3 4.6.4 4.6.5 4.6.6 Setting the Modulation Signal Source ... 4-24 4.7.1 4.7.2 4.7.3 Setting the AF Output ... 4-28 Memory Functions ... 4-30 4.9.1 4.9.2 4.9.3 4.9.4 4.9.5 4.10 Sweep Functions ...
  • Page 17 Measuring the 1-signal Selectivity ... 5-4 5.2.1 5.2.2 Measuring the 2-signal Sensitivity ... 5-9 5.3.1 5.3.2 SECTION 6 GPIB ... 6-1 Outline of GPIB ... 6-1 6.1.1 6.1.2 6.1.3 6.1.4 Device Message List ... 6-4 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.2.6 6.2.7 6.2.8...
  • Page 18 6.7.6 6.7.7 6.7.8 6.7.9 6.7.10 IEEE488.2 Common Command ... 6-51 Sample Program ... 6-53 6.10 GPIB Command Interchange Function ... 6-56 6.10.1 6.10.2 6.10.3 SECTION 7 PERFORMANCE TEST ... 7-1 Performance Test Required ... 7-1 Performance Test Device List ... 7-2 Performance Test ...

  • Page 19: General

    SECTION 1 GENERAL 1.1 Brief Description The MG3641A/MG3642A is a synthesized signal generator capable of outputing highly accurate, highly pure signals over a broad frequency range. The extremely excellent spurious characteristics and leakage characteristics offer to make the signal generator most suitable to evaluate sensitivity characteristics and interference characteristics, which comprise the basic performance of radio equipment.

  • Page 20: Section 3 Panel Layout

    Operations to be performed before powering-up the MG3641A/MG3642A Layout, function and method of preparative operation of components such as keys, connectors, knobs, and indicators on both the front and rear panels.

  • Page 21: Composition Of Devices

    1.3 Composition of Devices The composition of standard accessories to the MG3641A/MG3642A will be explained in this section. 1.3.1 Standard Composition The table below shows the standard composition of devices for the MG3641A/MG3642A. Item Model/Symbol Main unit MG3641A/ Synthesized signal generator...

  • Page 22: Options

    SECTION 1 GENERAL 1.3.2 Options The table below lists options for the MG3641A/MG3642A. Option Model number/ Order number MG3641A/ Reference Crystal Oscillator MG3642A-01 MG3641A/ Pulse modulator MG3642A-11 MG3641A/ AF synthesizer MG3642A-21 MG3641A/ FSK encoder MG3642A-22 Table 1-3. Options Name Frequency: 10 MHz Aging rate: 5×10...

  • Page 23: Application Parts

    1.4 Application Parts The table below lists application parts for the MG3641A/MG3642A, which are all optional purchase items. Model/Symbol Product Name J0576B Coaxial cord J1027A Coaxial cord J0007 GPIB cable J0008 GPIB cable MP51A MP52A MA1612A Four-port junction pad MP721 Fixed attenuator Table 1-4.

  • Page 24: Specifications

    Switching time Special setting mode *1 Available up to 5×10 *2 Only with Pulse Modulator(Opt. 11) installed 125 kHz to 1040 MHz: MG3641A 125 kHz to 2080 MHz: MG3642A 0.01 Hz Dependent on the accuracy of the reference oscillator. In the FM modulation, Accuracy of reference frequency ±(0.3 % of FM deviation setting +5 Hz)
  • Page 25 Specifications (continued) Output level Interference radiation distortion Signal Purity Spurious SSB phase noise Residual AM Residual FM Amplitude Range modulation Resolution Accuracy Modulation frequency response Distortion When measured with 50 Ω-terminated voltage using a two-loop antenna of 25 mm in diameter at 25 mm away from the case: <0.1 µ...
  • Page 26 SECTION 1 GENERAL Specifications (continued) Amplitude Incidental FM modulation Modulation signal source Modulation signal polarity Frequency Range modulation Resolution Accuracy Modulation frequency response Distortion Incidental AM External modulation group delay Modulation signal source Modulation signal polarity With reference to ≥0.4 MHz, ≤+7 dBm, AM≤30 %, Source=Int1 1 kHz, and in a 300 Hz to 3 kHz demodulation band: <200 Hzpeak Any one out of the internal modulation signal sources (Int1, Int2,...
  • Page 27 Specifications (continued) Pulse See specifications of options. modulation Modulation Internal modulation (Int1) signal source Internal modulation (Int2, Int3) External modulation (Ext1, Ext2) AF Output Output signal source Output level Output level resolution Output level accuracy Impedance Simultaneous modulation Sweep function Sweep parameter Sweep pattern Sweep mode Sweep time...
  • Page 28 SECTION 1 GENERAL Specifications (continued) Other functions Relative value display Offset display Memory Trigger function Backup GPIB Reverse power Maximum reverse input protection power General Power Environmental performance Dimensions and mass * Please specify a nominal voltage in the range from 100 and 240 V when ordering the product. 1-10 1-10 Carrier frequency and output level...
  • Page 29 Filter type: 10th-order Besser filter Cutoff frequency: 100Hz to 30kHz(-3dB) Set resolution: Upper 2 digits ● FM deviation accuracy: Same as that of MG3641A/MG3642A, with restriction of no baseband filter (by-passed) ● External modulation signal input Data2 : Rear-panel BNC connector (Int Mod Cont 2)
  • Page 30 SECTION 1 GENERAL (Blank) 1-12.

  • Page 31: Precaution

    MG3642A should be used at stable room temperatures and where the AC line voltage fluctuations are small. CAUTION : If the MG3641A/MG3642A is used at room temperature after being used or stored at a low temperature for a long time, condensation may occur inside the instrument which could cause short circuiting. Always ensure that the MG3641A/MG3642A is thoroughly dry before turning on the power.

  • Page 32: Safety Measures

    2.2.2 Reverse power input to RF output connector The MG3641A/MG3642A has a reverse power protector in the output unit to protect the internal circuits from a reverse input overpower. The reverse power protector can protect the following power: • ±50 Vdc •...

  • Page 33: Mounting The Mg3641A/Mg3642A In The Frame

    SECTION 2 PRECAUTION 2.3 Mounting the MG3641A/MG3642A in the Frame An optional rack mount kit is required to mount the MG3641A/MG3642A in the frame. For the mounting method, refer to the illustration appended to the rack mount kit.

  • Page 34: Preparation Before Power-On

    2.4 Preparation Before Power-On The MG3641A/MG3642A normally operates by connecting the power having the voltage range +10 % to –15 % for the specified nominal voltage 100 to 240 Vac. However, the safety measures are required to avoid the following before the AC power is supplied: •...

  • Page 35: Connecting The Power Cord

    2.4.1 Connecting the Power Cord Check that the " | " switch on the rear panel is turned off (switched to the (O) side). Insert the power plug into an outlet, and connect the other end to the power inlet on the rear panel. To ensure that the instrument is grounded, always use the supplied 3-pin power cord, and insert the plug into an outlet with a ground terminal.

  • Page 36: Fuse Replacement

    2.4.2 Fuse Replacement The MG3641A/MG3642A is supplied with two 5 A or 3.15 A fuses shown in Table 1-2. The fuses are to be loaded inside the fuse holders shown in Figure 2-2. If a fuse blows, locate the fault and correct the cause before replacing.

  • Page 37: Panel Layout

    3.1 Panel Layout This section explains the keys, switches, display, and connectors on the front and rear panels of the MG3641A/ MG3642A synthesized signal generator. 3.1.1 Front panel layout This paragraph outlines the switches and connectors arranged on the front panel.
  • Page 38 Outputs the MG3641A/MG3642A output signal with impedance 50 Ω. Turns on or off a signal from the RF output connector. In the off mode, the key lamp lights on.

  • Page 39: Rear Panel Layout

    To turn on the multi-menu display again, perform the same procedure as the turn- off procedure. Description Exhausts the heat generated inside the MG3641A/MG3642A to the outside. Do not leave anything to obstruct the air flow around the fan. Fine-adjusts the frequency of the internal base oscillator .

  • Page 40: Panel Layout Diagram

    SECTION 3 PANEL LAYOUT 3.1.3 Panel layout diagram Figures 3-1 and 3-2 show the front and rear panel diagrams, respectively. The numbers in the diagrams correspond to those in the paragraphs 3.1.1 and 3.1.2. 23 22 21 20 19 Fig. 3-1. Front Panel Fig.

  • Page 41: Operating Instructions

    OPERATING INSTRUCTIONS 4.1 Turning Power On/Off The MG3641A/MG3642A comes provided with two power switches, namely, the "Stby/On" switch on the front panel and the " " switch on the rear panel. Stby Stby Stby/On Stby/On MG3641A/MG3642A Rear panel Turning power on without grounding protection could lead to a bodily injury due to electric shocks.
  • Page 42 In case the AC line voltage fed to the unit is not an appropriate one, the interior of the signal generator may be damaged because of abnormal voltages. Before switching on the MG3641A/MG3642A, check to make sure that the AC line voltage meets the specified value.

  • Page 43: Turning Power On

    • The "On" lamp of the power switch on the front panel lights up, while the "Stby" lamp goes out. • The power will be supplied to all the circuits of the MG3641A/ MG3642A, which gets ready for operation. SECTION 4 OPERATING INSTRUCTIONS...

  • Page 44: Turning Power Off

    SECTION 4 OPERATING INSTRUCTIONS 4.1.2 Turning Power Off To turn the power off, follow the same procedure detailed in Item 4.1.1 inversely.

  • Page 45: Explanation Of Screens

    4.2 Explanation of Screens This signal generator is equipped with a multi-menu display for indicating statuses and setting operations, except for the major items, such as frequency, output level, memory, etc. (1) Screen Layout Displays the menu currently open. Area for status display and setting operations.

  • Page 46: Initial Settings

    SECTION 4 OPERATING INSTRUCTIONS 4.3 Initial Settings You can return the panel settings of the MG3641A/MG3642A to the initial setting conditions by pressing the [Preset] key. The term "Initial Settings" as used herein refers to the conditions under which the signal generator was shipped out of the factory (Appendix A).
  • Page 47 (2) Select "Initial memory set" by pressing the " ↓ " [F2] key or " ↑ " [F3] key (the characters are highlighted). (3) As you press the "Sel" [F1] key, the current panel settings will be written to the preset memory. If you select "Initial memory clear"...

  • Page 48: Setting The Frequency

    You select a resolution by the Resolution [<], [>] keys. Moreover, you can "knob up" or "knob down" the step size you entered in (2) above by operating the [Shift] key and the [>] (Knob Step) key in this order. [Frequency] key MG3641A/MG3642A front panel [Shift] key...

  • Page 49: Displaying The Frequency Relative Value

    If you need to verify the actual output frequency while a frequency relative value is on display, press the [Shift] key and, then, keep on holding down the [Rel Freq] (Cur Dspl) key. This will allow the actual output frequency to appear temporarily on the display. MG3641A/MG3642A front panel [Rel Freq] key [Shift] key...

  • Page 50: Frequency Offset

    SECTION 4 OPERATING INSTRUCTIONS 4.4.3 Frequency Offset Frequency offset means a function to offset a set frequency and a displayed frequency against the frequency to be actually output. When the frequency offset is activated, each frequency value will be expressed by the following equation: [Actual Frequency] = [Set/Displayed Frequency] −...

  • Page 51: Setting The Output Level

    Moreover, you can "knob up" or "knob down" the step size you defined in (2) above by operating the [Shift] key and the [>] (Knob Step) key in this order. [Level] key MG3641A/MG3642A front panel SECTION 4 OPERATING INSTRUCTIONS [Shift] key...

  • Page 52: Displaying The Output Level Relative Value

    If you need to verify the actual output level while an output level relative value is on display, press the [Shift] key and, then, keep on holding down the [Rel Level] (Cur Dspl) key. This will allow the actual output level to appear on the display temporarily. 4-12 MG3641A/MG3642A front panel [Shift] key [Rel Level] key...

  • Page 53: Output Level Offset

    4.5.3 Output Level Offset Output level offset means a function to offset a set level and a displayed level against the level to be actually output. When the output level offset is activated, each level value will be expressed by the following equation: [Actual Level] = [Set/Displayed Level] −...

  • Page 54: Level Continuous Mode

    Press the [Shift] key and, then, the [^] (Normal) key in the Output Level zone. The characters "Cont" will go out on the Output Level indicator, indicating that the continuous mode has been cleared. 4-14 MG3641A/MG3642A front panel [Shift] key ] (Normal) key ∧...

  • Page 55: Switching The Output Signal On/Off

    When the output signal is cut off, the lamp of the [RF Off/On] key will light up. An output level you set with the output signal cut off will become effective the next time you switch on the output signal. MG3641A/MG3642A front panel [RF Off/On] key 4-15...

  • Page 56: Special Functions Related To Level

    In this case, it is desired to increase the signal isolation between the signal generators for suppressing the distortion. The MG3641A/MG3642A has the isolation mode to increase the isolation by increasing the attenuation amount of the last-output-stage circuit.
  • Page 57 (1) Press the "Sys" [F3] key in the main menu (2) to open the "System (1)" menu. (2) Press the [More] key to move on to the "System (2)" menu. (3) Select "Voltage unit", "Level mode" or "Isolation mode" by pressing the " ↓ " [F2] key or " ↑ " [F3] key (the status display will be highlighted).

  • Page 58: Setting The Modulation

    SECTION 4 OPERATING INSTRUCTIONS 4.6 Setting the Modulation 4.6.1 Outline of Modulation This signal generator provides AM and FM modulation functions. The FM modulation has two systems: FM1 and FM2, frequency deviation of which can be set independently of each other. This unit also comes with 5 different modulation signal sources, as shown below, and you can select any one of them for each type of modulation.

  • Page 59: Setting The Modulation Function

    "↓" [F2], and "→" [F3] keys (the characters are highlighted). (3) Press the "Sel" [F1] key to change the current setting. • Modulation function: On/Off • Modulation signal source: Int1/Int2/Int3/Ext1/Ext2 SECTION 4 OPERATING INSTRUCTIONS MG3641A/MG3642A front panel [AM] [FM1] [FM2] [PM] Modulation...

  • Page 60: Setting The Modulation Factor And Frequency Deviation

    Turning the rotary knob raises or lowers the AM modulation factor or FM frequency deviation. The resolution assumes the lowest position of the display both in AM modulation factor and FM frequency deviation. [Modulation] key 4-20 : The step size is fixed to 10 %. down decrement. MG3641A/MG3642A front panel...

  • Page 61: Setting Range Of Fm Frequency Deviation

    4.6.4 Setting Range of FM Frequency Deviation In setting an FM frequency deviation, you can set it up to maximum 2048 kHz, irrespective of the output frequency. However, the actual FM frequency deviation is restricted by the output frequency, as shown in the table below. If you make a setting in excess of this limit, the "Uncal"...

  • Page 62: Pulse Modulation

    4.6.6 Pulse Modulation The pulse modulator (an option) can be built into the MG3641A/MG3642A. The pulse modulator can apply modulation with TTL level signals applied to the "Pulse Mod Input" connector. It works fixed at positive logic, and the input impedance can be selected between 50 Ω and 600 Ω.
  • Page 63 (2) Select the item you need to change (ON/OFF or impedance) in the "PM" line by the "↓" [F2], and "→" [F3] keys (the characters are highlighted). (3) Press the "Sel" [F1] key to change the setting. • Modulation function: On/Off •...

  • Page 64: Setting The Modulation Signal Source

    SECTION 4 OPERATING INSTRUCTIONS 4.7 Setting the Modulation Signal Source 4.7.1 Internal Modulation Signal (Int1) Int1 is a signal source that generates sine waves at a frequency of either 1 kHz or 400 Hz. To select a frequency for Int1, follow the procedure detailed below: (1) Press the "Src"...

  • Page 65: Internal Modulation Signals (Int2, Int3)

    4.7.2 Internal Modulation Signals (Int2, Int3) Int2 and Int3 are options. The following description of Int2 and Int3 assumes that AF Synthesizer (opt21) is mounted in them both. If another option is mounted, follow the operation description in the operation manual of that option.

  • Page 66: External Modulation Signals (Ext1, Ext2)

    The input level is too high. Lower the input level. If the frequency of the modulation input signal is 100 Hz or less, adjust the signal level so that turns ON. 4-26 MG3641A/MG3642A front panel Mod Input Ext1 Ext2 600Ω...
  • Page 67 For the external modulation input, you can select either DC coupling or AC coupling by following the procedure detailed below: (1) Press the "Src" [F4] key in the Modulation menu to open the "Audio Source" menu. (2) Select coupling display for Ext1 or Ext2 by operating the "↓"...

  • Page 68: Setting The Af Output

    You select a signal source to supply signals from by following the procedure detailed below: (1) Press the "AF" [F3] key in the top menu to open the "AF Output" menu. 4-28 MG3641A/MG3642A front panel AF Output connector Main Menu (1/2)
  • Page 69 (2) Select "Source" by pressing the "↓" [F2] key (the characters are highlighted), and hold down the "Sel" [F1] key to select the signal you want delivered. (3) Press the "↓" [F2] key to select "Level" (the characters are highlighted), and set the AF output level by the number keys, and the set keys and rotary knob in the Edit zone.

  • Page 70: Outline Of Memory Functions

    Memory address 450 to 499 Block 12: Memory address 550 to 599 Block 14: Memory address 650 to 699 Block 16: Memory address 750 to 799 Block 18: Memory address 850 to 899 Block 20: Memory address 950 to 999 (Address) MG3641A/MG3642A front panel...

  • Page 71: Recalling Memory Contents

    Turning the rotary knob raises or lowers memory addresses already stored to perform memory recall continuously. If any memory block was excluded from the continuous recall, all the memories of that block are skipped, and those of the following block are recalled. [Memory] key SECTION 4 OPERATING INSTRUCTIONS MG3641A/MG3642A front panel 4-31...
  • Page 72 SECTION 4 OPERATING INSTRUCTIONS To alter the attributes of memory blocks, follow the procedure detailed below: (1) Press the "Mem" [F5] key in the top menu to open the "Memory Block Select" menu. (2) Select the memory block of which attributes you need to change, by pressing the "↓"...

  • Page 73: Clearing The Memory

    SECTION 4 OPERATING INSTRUCTIONS number keys, [Hz/ µ V] (Clear) key Address number keys, [·] key, number keys, [Hz/ µ V] (Clear) key Smallest Largest address of the address of the memory to be memory to be cleared cleared MG3641A/MG3642A front panel 4-33...

  • Page 74: Selecting The Memory Recall Mode

    SECTION 4 OPERATING INSTRUCTIONS 4.9.5 Selecting the Memory Recall Mode If you limit the memory contents to be recalled to frequencies only or frequency and output levels only, you can execute high-speed memory recall, without changing other settings (modulation, for example). Select a memory mode by following the procedure detailed below: (1) Press the "Mem"...

  • Page 75: Sweep Functions

    4.10 Sweep Functions 4.10.1 Outline of Sweep Functions This signal generator performs sweep with respect to the frequencies, output levels, and memories. Each sweep has the following sweeping patterns: Frequency sweep Output level sweep Memory sweep Moreover, this unit provides 3 different sweep modes, as follows: AUTO Sweeps repetitively from sweep start point to sweep end point.

  • Page 76: Setting And Executing The Sweep

    SECTION 4 OPERATING INSTRUCTIONS 4.10.2 Setting and Executing the Sweep In the first place, you select a sweep pattern by following the procedure detailed below: (1) Press the "Swp" [F2] key in the top menu to open the "Sweep" menu. (2) Press the "Sel"...
  • Page 77 Then, you set up sweep parameters. The following explanation assumes that the frequency sweep (Start/Stop) was selected for the sweep pattern. (3) Press the "Prmt" [F4] key in the "Sweep" menu to open the "Sweep Parameter (1) " menu. (4) Select the sweep parameter item to be changed, by pressing the "↓"...

  • Page 78: Sweep Auxiliary Outputs

    SECTION 4 OPERATING INSTRUCTIONS Once you have set the sweep parameters, you execute the sweep. (7) Press the "Rtn" [F5] key in the "Sweep Parameter" menu to return to the "Sweep" menu. (8) Pressing the " " [F2] key starts the sweep. (9) Pressing the "I"...
  • Page 79 Outputs "H"-level TTL signals every sweep step, from the time when hardware setting is completed, till the next step setting begins (4) Marker Out Outputs "H"-level TTL signals when the actual sweep matches the marker point which was set in the "Sweep Parameter" menu. MG3641A/MG3642A rear panel Sweep Auxiliary Output Connector SECTION 4 OPERATING INSTRUCTIONS 4-39...
  • Page 80 SECTION 4 OPERATING INSTRUCTIONS The diagram below represents the timing of each sweep auxiliary output. Sweep start point +10V X Out Z Out Blanking Out Marker Out 4-40 Sweep Marker point Sweep end point...

  • Page 81: Trigger Functions

    4.11 Trigger Function 4.11.1 Outline of trigger function The trigger function executes the panel key operation procedures registered beforehand as the trigger program by the external trigger signal. The same measurement procedures can be repeated easily from the operator panel or external device by registering the procedures as the trigger program.

  • Page 82: Registering The Trigger Program

    SECTION 4 OPERATING INSTRUCTIONS 4.11.2 Registering the trigger program Register the trigger program as follows: (1) Press the "Trig" [F5] key on the Main Menu (2) to open the "Trigger Program" menu. (2) Press the "Enter" [F3] key. The screen switches to the Main Manu (1) and the device enters the trigger program registration state.

  • Page 83: Executing The Trigger Program

    If the trigger program is registered when another trigger program is already registered, the new trigger program is added to the already-registered trigger program. To register a new trigger program, press the "Clr" [F1] key to erase the already-registered trigger program before using the "Entr" [F3] key to enter the registration state in Item (2) above.

  • Page 84: Checking The Contents Of The Trigger Program

    SECTION 4 OPERATING INSTRUCTIONS (3) Execution using the panel key When the "Exe" [F4] key on the "Trigger Program" key is pressed, the trigger program is executed. This method can be used to check the trigger function. The trigger program can be halted by pressing a key other than the [Preset] or [Local] key on the panel. 4.11.4 Checking the contents of the trigger program The contents of the trigger program can be checked by opening the "Trigger Program"...

  • Page 85: Miscellaneous Functions

    4.12 Miscellaneous Functions 4.12.1 Setting Display On/Off The MG3641A/MG3642A has a low EMI radiation from the panel, and it does not become a problem at a ordinary measurement. However, if the radiation affects the measurement, it can be eliminated by pressing the [Display] key to turn off the multi-menu display.

  • Page 86: Setting Bell • Alarm On/Off

    SECTION 4 OPERATING INSTRUCTIONS 4.12.2 Setting Bell • Alarm On/Off Bell (bell sound when any panel key is pressed, or the rotary knob is revolved.) • alarm (alarm sound when any error is occurred.) On/Off can be set as follows. (1) Press the "Sys"...

  • Page 87: Setting Address And Only Mode Of Gpib

    4.12.3 Setting address and only mode of GPIB The MG3641A/MG3642A has the GPIB only mode. The GPIB address and only mode are set on the GPIB menu, as described below. (1) Press the “GPIB” [F2] key on the top menu to open the “GPIB”...

  • Page 88: Panel Lock

    To remove the panel-lock condition, turn off and on the power to recover the ordinary state. In panel lock mode, the GPIB and trigger functions do not work. If the panel lock is performed during sweeping operation, the sweeping is stopped. 4-48 MG3641A/MG3642A front panel CAUTION [Shift] key...

  • Page 89: Removing Reverse Power Protection (Rpp) Circuit Operation

    • Don’t remove the RPP circuit while applying an excessive power. Or the RPP circuit is damaged. • Maximum reverse power from which the MG3641A/MG3642A can be protected, is 50 Vdc, 50 W (up to 1040 MHz) or 25 W (1040 to 2080 MHz).

  • Page 90: Error Messages

    SECTION 4 OPERATING INSTRUCTIONS 4.14 Error Messages If a panel operation or device internal error occurs, the MG3641A/MG3642A displays messages in the error message area on the multimenu display. Error messages Error messages are given below: Operation error: Displayed when a setting becomes invalid because of an incorrect operation.
  • Page 91 Hardware status: Displayed when the MG3641A/3642A is used incorrectly or fault occurs. RF out shut-down by RPP: The reverse power protection circuit operates. Reference signal abnormal: Synthesizer unlock: RF Amplifier abnormal: Setting outside performance guarantee range: This message is displayed if a value is set outside the performance...
  • Page 92 SECTION 4 OPERATING INSTRUCTIONS (Blank) 4-52 .

  • Page 93: Section 5 Measurement

    5.1 Measurement of Sensitivity The sensitivity of the receiver means the minimum signal input level required to output the rated signal of the receiver. The following incidental conditions are required for the signal level, noise level, and signal distortion obtained in the output side of the receiver: •...

  • Page 94: Measuring 20 Db Nq Sensitivity

    Set the MG3641A/MG3642A frequency deviation to 70 % (3.5 kHz for maximum frequency deviation 5 kHz) of the specified maximum frequency deviation. Then, set the internal modulation frequency to 1 kHz. Set the MG3641A/MG3642A to a sufficiently high output (ordinarily 30 dB µ or more) and apply it to the receiver.

  • Page 95: Measuring 12 Db Sinad Sensitivity

    Set the MG3641A/MG3642A frequency deviation to 70 % (3.5 kHz for maximum frequency deviation 5 kHz) of the specified maximum frequency deviation. Then, set the internal modulation frequency to 1 kHz. Set the MG3641A/MG3642A to a sufficiently high output (ordinarily 30 dB µ or more) and apply it to the receiver.

  • Page 96: Measuring The 1-Signal Selectivity

    SECTION 5 MEASUREMENT 5.2 Measuring the 1-signal Selectivity The 1-signal selectivity is measured when the receiver operates in a proportional region because the expected wave and interference disturbing wave are fine. It is indicated by the relative input voltage rate required to equalize the output of the receiver by connecting the signal generator to the receiver input pin in the expected wave receiving state and changing its frequency to the expected or disturbing one.
  • Page 97 Set the MG3641A/MG3642A frequency, output level, and FM receiver setting into the 20 dB NQ sensitivity mode. Place the MG3641A/MG3642A into the relative level display mode and set the output level resolution to 1 Clockwise turn the rotary knob of Output to increase the MG3641A/MG3642A output level by 6 dB as compared with the 20 dB NQ sensitivity (set the display of the output level indicator to +6 dB).
  • Page 98 Set the MG3641A/MG3642A frequency, output level, and FM receiver setting into the 20 dB NQ sensitivity mode. Place the MG3641A/MG3642A into the relative level display mode and set the output level resolution to 1 Clockwise turn the rotary knob of Output to increase the MG3641A/MG3642A output level by 70 dB as compared with the 20 dB NQ sensitivity (set the display of the output level indicator to +70 dB).

  • Page 99: Measuring Spurious Response

    This section shows an example of fd = 154.45 MHz, fs = fd + 2 fi. fi = 10.7 MHz to explain the measurement procedure. (1) Setup MG3641A/MG3642A If a frequency that sets the difference from the local frequency to fi/2 is input, the second higher harmonic of fi/2 changes to an IF frequency and an interference occurs.
  • Page 100 (3.5 kHz if the maximum frequency deviation is 5 kHz). Then, set the internal modulation frequency to 1 kHz. Set the MG3641A/MG3642A to a sufficiently high output (ordinarily 30 dB µ or more) and apply it to the receiver. Turn off the squelch of the receiver, modulate the receiver to receiving frequency 154.45 MHz (maximize the value of the level meter), adjust the volume adjustment volume of the receiver, and obtain the rated output of the receiver from the indicator of the level meter.

  • Page 101: Measuring The 2-Signal Sensitivity

    5.3 Measuring the 2-signal Selectivity In the conventional method of measuring the selectivity of one signal in the output fixing method, the input signal level had to be changed in a large range from about 0 dBm to about 100 dBm. It is generally difficult to operate each part of the amplifier of the receiver according to such a large change of the level.
  • Page 102 MG3641A/MG3642A 2 (For desired wave) (2) Measurement procedure STEP Turn off the output of MG3641A/MG3642A Place the frequency, output level, and FM receiver setting of MG3641A/MG3642A sensitivity state. In this case, the noise level is V Turn off the output of MG3641A/MG3642A MG3642A into the 20 dB NQ sensitivity state.
  • Page 103 Turn the rotary knob to adjust the output level so that the noise output of the receiver is set to V obtained in step 2 each time the Edit [ ] key of MG3641A/MG3642A the output level indicator is the disturbing input level separated from the desired wave by – ∆f × n.

  • Page 104: Measuring The Cross-Modulation Characteristics

    AGC of the receiver, then place the receiver into the appropriate state. Adjust the output level of MG3641A/MG3642A signal output. The value indicated by the output level indicator of MG3641A/MG3642A Turn off the modulation of MG3641A/MG3642A Set the frequency of MG3641A/MG3642A...
  • Page 105 Turn the rotary knob to adjust the output level so that the noise output of the receiver is set to Vs dB described in step 11 each time the Edit [^] key of MG3641A/MG3642A by the output level indicator is a disturbing wave input level (dB) separated from the desired wave by +∆f ×...
  • Page 106 SECTION 5 MEASUREMENT (Blank) 5-14. 5-14...

  • Page 107: Section 6 Gpib

    6.1 Outline of GPIB 6.1.1 Overview The MG3641A/MG3642A synthesized signal generator can automate the measurement by a combination with an external controller and other instruments. This device conforms to the institute of electrical and electric engineers (IEEE) std 488.1-1987. The software standard conforms to IEEE488.2 and standard commands for programmable instruments (SCPI).

  • Page 108: Setup Example

    (1) Control from host computer Connect the host computer to automatically control this device. MG3641A/MG3642A (2) Synchronous control in only mode Connect two MG3641A/MG3642A units to synchronously control the frequency or output level. MG3641A/MG3642A (Talk only mode) MG3641A/MG3642A (Listen only mode) Host computer...

  • Page 109: Standard

    6.1.4 Standard The MG3641A/MG3642A GPIB is provided with the IEEE488.1 interface function subset listed in the table below. Code Supports all the source handshake functions and takes a data sending timing. Supports all the acceptor handshake functions and takes a data receiving time.

  • Page 110: Device Message List

    6.2.3 Command Structure :FREQuency Program message Response message [:CW] [:CW]? :SWEep :MODE :MODE? :TIME :TIME? Fig. 6-1. SCPI Command Tree Example MG3641A/MG3642A <Numeric> <Freq term> <Character> <Numeric> <Time term>...

  • Page 111: Writing Commands

    SCPI commands are based on a hierarchical structure. The commands are grouped according to the associated functions. They form hierarchical structures called ‘subsystems’. In this manual, each subsystem is represented by a command tree as shown in the above figure. Where the same headers appear in a tree, the position of the headers correspond to different functions.

  • Page 112: Compounding Commands

    SECTION 6 GPIB and lower-case. (The three types of headers, FREQUENCY, Frequency, and frequency are all interpretable as the same header.) Example: Long form Short form Long + Short → :FREQ:SWEep:MODE AUTO <Option node> The symbol [ ] indicates an option node. The header enclosed within the [ ] may abbreviated. It is accepted as a command whether abridged or unabridged.

  • Page 113: Parameter

    6.2.6 Parameter The table below shows the parameter types employed for this instrument. In this manual, these parameter types are written in lower-case alphabetical characters between brackets < >, and the IEEE488.2 (or SCPI)-defined <PROGRAM TYPE>s corresponding to them are written in upper-case alphabetical characters.

  • Page 114: Command Tree

    SECTION 6 GPIB 6.2.8 Command Tree This paragraph shows the MG3641A/MG3642A device message as a command tree for each subsystem. The messages between brackets can be omitted. (1) Frequency Subsystem :FREQuency [ :CW] [ :CW]? :RELative :RELative? :OFFSet :OFFSet? :SWEep...
  • Page 115 (2) Output Level Subsystem :AMPLitude [ :OUT] :LEVel ( :SOURce) :LEVel? :UNIT :UNIT? :STATe :STATe? :CONTinuous :CONTinuous? :SAFety :SAFety? :VOLT :VOLT? :RELative :RELative? :OFFSet :OFFSet? :ISOLation :ISOLation? :SWEep :RPPReset :STEP [ :INCRement] [ :INCRement]? :TYPE :TYPE? :STARt :STARt? :STOP :STOP? :CENTer :CENTer? :SPAN...
  • Page 116 SECTION 6 GPIB (3) AM Subsystem [ :DEPTh] [ :DEPTh]? :STATe :STATe? :SOURce :SOURce? (4) FM Subsystem [ :FM1] :FM2 (5) PM Subsystem :STATe :STATe? :IMPedance :IMPedance? 6-10 [ :DEViation] [ :DEViation]? :STATe :STATe? :SOURce :SOURce? [ :DEViation] [ :DEViation]? :STATe :STATe? :SOURce...
  • Page 117 (6) Modulation Source Subsystem :LFSource [ :FREQuency] [ :FREQuency]? :FREQuency2 :FREQuency2? :WAVeform2 :WAVeform2? :FREQuency3 :FREQuency3? :WAVeform3 :WAVeform3? :EXTernal :EXTernal2 :OUTPut :COUPling :COUPling? :COUPling :COUPling? :SOURce :SOURce? :LEVel :LEVel? SECTION 6 GPIB <Numeric> <Character> <Numeric> <Freq term> <Character> <Numeric> <Freq term> <Character>...
  • Page 118 SECTION 6 GPIB (7) Memory Subsystem :MEMory :RECall :STORe :CLEar :SKIP :SWEep (8) Display subsystem :DISPlay :STATe :STATe? :MENU (9) System Subsystem :SYSTem :BELL :BELL? :ALARm :ALARm? :MEMory :ERRor? 6-12 :TYPE :STARt :STARt? :STOP :STOP? :TIME :TIME? :MARKer :MARKer? <Numeric> <Character>...
  • Page 119 (10) Status Subsystem :STATus :QUEStionable :OPERation [ :EVENt]? :CONDition? :ENABle :ENABle? :PTRansition? :NTRansition? [ :EVENt]? :CONDition? :ENABle :ENABle? :PTRansition? :NTRansition? SECTION 6 GPIB <Numeric> <Numeric> 6-13...

  • Page 120: Connecting The Gpib Cable

    SECTION 6 GPIB 6.3 Connecting the GPIB Cable A GPIB cable must be connected for remote control by the GPIB. The MG3641A/MG3642A supports the GPIB cable connector on the rear panel. MG3641A/MG3642A rear panel Turn the POWER switch off and unplug the power cord before connecting and disconnecting the GPIB cable.

  • Page 121: Device Message Format

    6.4 Device Message Format 6.4.1 Program message format To output a program message from the controller to the MG3641A/MG3642A with a PRINT statement, the following format is used: Program message ∆ PRINT @3; “ :FREQ:CW 500 MHz” (1) Program message terminator The carriage return (CR) is ignored without being processed as a terminator.
  • Page 122 SECTION 6 GPIB (3) Program message unit Program header • The program header of the IEEE488.2 common command is prefixed by an asterisk (*). • The program header of the program query is suffixed by a question mark (?). (4) Program data Numeric program data Logical program data Character program data...
  • Page 123 • Numeric program data The numeric program data is indicated in two formats: integer format (NR1) and real number (fixed point) format (NR2). < Integer format (NR1) > – • 0 can be inserted at the head. • No space (SP) can be inserted between a sign (+ or –) and numeric value. •...

  • Page 124: Response Message Format

    SECTION 6 GPIB 6.4.2 Response message format The response message is received from the MG3641A/MG3642A with an INPUT statement in the following format: Response message (1) Program message terminator (2) Response message The response message consists one or multiple response message units for one or multiple program queries issued with one PRINT statement.
  • Page 125 • Numeric response data The numeric response data is expressed in the integer format (NR1) and real number (fixed point) format (NR2). < Integer format (NR1) > – • A number other than 0 must be specified at the head. •...

  • Page 126: Status Message

    This section explains the status summary message bits, status data structure for generating them, and synchronization between the MG3641A/MG3642A using the status message and controller. 6.5.1 Status register configuration The figure below shows the entire configuration of the MG3641A/MG3642A status register. The detail is explained for each paragraph. Status Byte Register...

  • Page 127: Ieee488.2-Based Status Register

    6.5.2 IEEE488.2-based status register IEEE488.2 prescribes the following two status registers. Status byte register Standard event status register & & & Standard event status enable register Set by *ESE<n> Read by *ESE? & & & Service request enable register Set by *SRE<n> Read by * SRE? Used to set the RQS and seven summary bits.

  • Page 128: Scpi Standard Status Register

    SECTION 6 GPIB Definition of bits in status byte register (Error/Event QUEue) QUES (QUEStionable status register summary) (Message Available) (Event Summary Bit) (ReQuest Service) (Master Summary Status) OPER (OPERation status register summary) Definition of bits in standard event status register (OPeration Complete) (QuerY Error) (Device Dependent Error)

  • Page 129: Reading, Writing, Clearing, And Resetting The Status Register

    6.5.4 Reading, writing, clearing, and resetting the status register The table below lists how to read and write each status register. Register Name Status Byte Register Service Request Enable Register Standard Event Status Register Standard Event Status Enable Register SCPI Event Status Register SCPI Event Status Enable Register...
  • Page 130 SECTION 6 GPIB The table below lists how to clear and reset each status register and ranges affected by clearing and resetting. Register name *RST Status Byte Register – Service Request – Enable Register Standard Event – Status Register Standrd Event Status –...

  • Page 131: Scpi Error Messages

    SCPI error messages SCPI prescribes the error codes and messages as responses to an SCPI command :SYSTem:ERRor?. This paragraph explains the MG3641A/MG3642A error messages in detail. (1) Command error group Error codes –100 to –199 indicate that an IEEE488.2 syntax error occurred. Bit 5 in the standard event status register of this device is set when an error occurs at report of the events below.
  • Page 132 SECTION 6 GPIB (3) Device dependent error group Error codes –300 to –399 indicate that a device error other than command, execution, and query errors occurred in the device. Bit 3 in the standard event status register of the device is set at occurrence of an error. Error code –310 System error...

  • Page 133: Initializing Device

    Device initialization Device initialization by *RST command: The device function is returned to the preceding state regardless of the past use state. In the MG3641A/MG3642A, it is returned in the same state set when the Preset key is pressed. 6.6.4...

  • Page 134: Detailed Description Of Commands

    :FREQuency:OFFSet <Numeric> <Freq term> Function Parameter Unit Restriction 6-28 Sets the carrier frequency. <Numeric> = 0 Hz to 1040 MHz (MG3641A) 0 Hz to 2080 MHz (MG3642A) <Character> = UP DOWN <Freq term> (UP,DOWN:<Non term>) None Reads out the carrier frequency.
  • Page 135 Unit <Non term> Restriction None :FREQuency:SWEep:STARt <Numeric> <Freq term> Function Sets the start frequency for a sweep. Parameter <Numeric> = 0 Hz to 1040 MHz (MG3641A) Unit <Freq term> Restriction None :FREQuency:SWEep:STARt? Function Reads out the start frequency for sweep.
  • Page 136 Function Response Restriction 6-30 Sets the span frequency for a sweep. <Numeric> = 0.02 Hz to 1040 MHz (MG3641A) 0.02 Hz to 2080 MHz (MG3642A) <Freq term> None Reads out the span frequency for a sweep. Span frequency for a sweep None Sets the frequency step size for a liner sweep.
  • Page 137 Sweep time for a frequency sweep Restriction None :FREQuency:SWEep:MARKer <Numeric> <Freq term> Function Sets the marker frequency for a sweep. Parameter <Numeric> = 0.01 Hz to 1040 MHz (MG3641A) Unit <Freq term> Restriction None :FREQuency:SWEep:MARKer? Function Reads out the marker frequency for a sweep.

  • Page 138: Output Level Subsystem

    SECTION 6 GPIB 6.7.2 Output level subsystem In the output level subsystem, both “:POWer: SOURce” and “:AMPLitude[:OUT]” are valid for the first and second layers. (When the first layer is PEWer, the SOURce of the second layer cannot be omitted.) The same processing is performed in either format.
  • Page 139 :AMPLitude[ :OUT]:STATe <Boolean> Function Turns ON or OFF the RF output. Parameter <Boolean> = ON or 1 Unit <Non term> Restriction None :AMPLitude[ :OUT]:STATe? Function Reads out the state of RF output. Response RF output = OFF Restriction None :AMPLitude[ :OUT]:CONTinous <Boolean> Function Turns ON or OFF the level continuous mode.
  • Page 140 SECTION 6 GPIB :AMPLitude[ :OUT]:RELative <Boolean> Function Parameter Unit Restriction :AMPLitude[ :OUT]:RELative? Function Response Restriction :AMPLitude[ :OUT]:OFFSet <Numeric> <Ampl term> Function Parameter Unit Restriction :AMPLitude[ :OUT]:OFFSet? Function Response Restriction :AMPLitude[ :OUT]:ISOLation <Boolean> Function Parameter Unit Restriction :AMPLitude[ :OUT]:ISOLation? Function Response Restriction :AMPLitude[ :OUT]:SWEep <Character>...
  • Page 141 :AMPLitude[ :OUT]:SWEep:STARt? Function Reads the start level for a sweep. Response Start level for a sweep Restriction None :AMPLitude[ :OUT]:SWEep:STOP <Numeric> <Ampl term> Function Sets the stop level for a sweep. Parameter <Numeric> = –142.99 dBm to +22.99 dBm Unit <Ampl term>...
  • Page 142 SECTION 6 GPIB :AMPLitude[ :OUT]:SWEep:STEP:NUMBer <Numeric> Function Parameter Unit Restriction :AMPLitude[ :OUT]:SWEep:STEP:NUMBer? Function Response Restriction :AMPLitude[ :OUT]:SWEep:MODE <Character> Function Parameter Unit Restriction :AMPLitude[ :OUT]:SWEep:MODE? Function Response Restriction :AMPLitude[ :OUT]:SWEep:TIME <Numeric> <Time term> Function Parameter Unit Restriction :AMPLitude[ :OUT]:SWEep:TIME? Function Response Restriction :AMPLitude[ :OUT]:SWEep:MARKer <Numeric>...
  • Page 143 :AMPLitude[ :OUT]:SWEep:PATTern <Character> Function Sets the output level sweep pattern. Parameter <Character> = SIZE Unit <Non term> Restriction None :AMPLitude[ :OUT]:SWEep:PATTern? Function Reads out the output level pattern. Response Output level pattern = SIZE Restriction None :AMPLitude[ :OUT]:SWEep:TYPE <Numeric> Function Sets the output level sweep type.

  • Page 144: Am Subsystem

    SECTION 6 GPIB 6.7.3 AM subsystem :AM[ :DEPTh] <Numeric> <AM term> or <Character> Function Parameter Unit Restriction :AM[ :DEPTh]? Function Response Restriction :AM:STATe <Boolean> Function Parameter Unit Restriction :AM:STATe? Function Response Restriction :AM:SOURce <Character> Function Parameter Unit Restriction :AM:SOURce? Function Response Restriction 6-38...

  • Page 145: Fm Subsystem

    :FM[ :FM1]:SOURce? Function Response Restriction Sets the FM1 deviation. <Numeric> = –1024 kHz to 1024 kHz (MG3641A) –2048 kHz to 2048 kHz (MG3642A) <Character> = UP DOWN <Freq term> (UP,DOWN<Non Term>) Modulation source porality can be changed by entering negative FM1 deviation value.
  • Page 146 Function Response Restriction 6-40 Sets the FM2 deviation. <Numeric> = –1024 kHz to 1024 kHz (MG3641A) –2048 kHz to 2048 kHz (MG3642A) <Character> = UP DOWN <Freq term> (UP,DOWN<Non Term>) Modulation source porality can be changed by entering negative FM2 deviation value.

  • Page 147: Pm Subsystem

    6.7.5 PM subsystem :PM:STATe <Boolean> Function Parameter Unit Restriction :PM:STATe? Function Response Restriction :PM:IMPedance <Character> Function Parameter Unit Restriction :PM:IMPedance? Function Response Restriction Turns ON or OFF the pulse modulation. <Boolean> = ON or 1 OFF or 0 <Non term> None Reads out the state of pulse modulation.

  • Page 148: Modulation Source Subsystem

    SECTION 6 GPIB 6.7.6 Modulation source subsystem :LFSource:FREQuency <Numeric> or <Character> Function Parameter Unit Restriction :LFSource:FREQuency? Function Response Restriction :LFSource:FREQuency2 <Numeric> <Freq term> Function Parameter Unit Restriction :LFSource:FREQuency2? Function Response Restriction :LFSource:WAVeform2 <Character> Function Parameter Unit Restriction :LFSource:WAVeform2? Function Response Unit Restriction :LFSource:FREQuency3 <Numeric>...
  • Page 149 :LFSource:FREQuency3? Function Reads out the frequency of Int3. Response Frequency of Int3 Restriction None :LFSource:WAVeform3 <Character> Function Sets the wave form of Int3. Parameter <Character> = SIN Unit <Non term> Restriction None :LFSource:WAVeform3? Function Reads the wave form of Int3. Response Wave form of Int3 = SIN Restriction...
  • Page 150 SECTION 6 GPIB :LFSource:OUTPut:LEVel <Numeric> Function Parameter Unit Restriction :LFSource:OUTPut:LEVel? Function Response Restriction :LFSource:OUTPut:SOURce <Character> Function Parameter Unit Restriction :LFSource:OUTPut:SOURce? Function Response Restriction 6-44 Sets the AF output level. <Numeric> = 0 to 4 V <Ampl term> Units are V, mV, and uV, only. Reads out the AF output level.

  • Page 151: Memory Subsystem

    6.7.7 MEMORY subsystem :MEMory:RECall <Numeric> or <Character> Function Parameter Unit Restriction :MEMory:RECall:TYPE <Numeric> Function Parameter Unit Restriction :MEMory:STORe <Numeric> Function Parameter Unit Restriction :MEMory:SKIP <Numeric> Function Parameter Unit Restriction :MEMory:CLEar <Numeric>, <Numeric> Function Parameter Unit Restriction :MEMory:SWEep <Character> Function Parameter Unit Restriction :MEMory:SWEep:STARt <Numeric>...
  • Page 152 SECTION 6 GPIB :MEMory:SWEep:STARt? Function Response Restriction :MEMory:SWEep:STOP : <Numeric> Function Parameter Unit Restriction :MEMory:SWEep:STOP? Function Response Restriction :MEMory:SWEep:MODE <Character> Function Parameter Unit Restriction :MEMory:SWEep:MODE? Function Response Restriction :MEMory:SWEep:TIME <Numeric> Function Parameter Unit Restriction :MEMory:SWEep:TIME? Function Response Restriction :MEMory:SWEep:MARKer < Numeric> Function Parameter Unit...

  • Page 153: Display Subsystem

    6.7.8 Display subsystem :DISPlay:STATe <Numeric> Function Parameter Unit Restriction :DISPlay:STATe? Function Response Restriction :DISPlay:MENU <Character> Function Parameter Unit Restriction Turns ON or OFF the display. <Numeric> = 0 (All OFF) 1 (7-segments only) 2 (All ON) <Non term> None Reads out the state of display. State of display = 0 (All OFF) 1 (7-segments only) 2 (All ON)

  • Page 154: System Subsystem

    SECTION 6 GPIB 6.7.9 System subsystem :SYSTem:BELL <Boolean> Function Parameter Unit Restriction :SYSTem:BELL? Function Response Restriction :SYSTem:ALARm <Boolean> Function Parameter Unit Restriction :SYSTem:ALARm? Function Response Restriction :SYSTem:MEMory <Character> Function Parameter Restriction :SYSTem:ERRor? Function Response Restriction *For the error numbers, refer to the SCPI Command Reference (1995 Volume 2). :SYSTem:TRIGger? Function Response...

  • Page 155: Status Subsystem

    6.7.10 Status subsystem :STATus:QUEStionable[ :EVENt]? Function Response Restriction :STATus:QUEStionable:CONDition? Function Response Restriction :STATus:QUEStionable:ENABle <Numeric> Function Parameter Restriction :STATus:QUEStionable:ENABle? Function Response Restriction :STATus:QUEStionable:PTRansition? Function Response Restriction :STATus:QUEStionable:NTRansition? Function Response Restriction :STATus:OPERation[ :EVENt]? Function Response Restriction :STATus:OPERation:CONDition? Function Response Restriction :STATus:OPERation:ENABle <Numeric> Function Parameter Restriction...
  • Page 156 SECTION 6 GPIB :STATus:OPERation:PTRansition? Function Response Restriction :STATus:OPERation:NTRansition? Function Response Restriction 6-50 Reads out the operation register transition filter (positive). Always 65535 None Reads out the operation register transition filter (negative). Always 0 None...

  • Page 157: Ieee488.2 Common Command

    Identification Query Function Reads out the manufacturer name, model number etc. of the product. Response ANRITSU, MG3641A, 0, 1 or ANRITSU, MG3642A, 0, 1 *OPC Operation Complete Command Function Set the bit-0 digit in the standard event status register when all the pending selected-device operations have been completed.
  • Page 158 SECTION 6 GPIB *STB? Read Status Byte Query Function Reads out the current value of the status byte including the MSS bit. Response Register = 0 to 255 *PSC <Numeric> Function Determines whether the service request, enable register, standard event status, and parallel poll enable register are cleared or not at power-on.

  • Page 159: Sample Program

    Controller Generate a program that varies the MG3641A/MG3642A output level every 2 dB step in the range from –30 dBm to 0 dBm according to the input of the amplifier and measures the output level of the amplifier with the MS2651A spectrum analyzer in this connection state.
  • Page 160 270 ’ 280 ’ ************** setting the MG3641A/MG3642A ***************** 290 ’ 300 PRINT @3; “*RST” ’ ... Initializes the MG3641A/MG3642A 310 PRINT @3; “:FREQ”+STR$(MF)+“MHz” ’ ... Sets a frequency 320 PRINT @3; “:AMPL:STAT OFF” ’ ... Turns off the output 330 ’...
  • Page 161 Execution samples INPUT OUTPUT –30.0 dBm –5.2 dBm –28.0 dBm –3.2 dBm –26.0 dBm –1.2 dBm –24.0 dBm .8 dBm –22.0 dBm 2.8 dBm –20.0 dBm 4.8 dBm –18.0 dBm 6.8 dBm –16.0 dBm 8.8 dBm –14.0 dBm 10.8 dBm –12.0 dBm 12.5 dBm –10.0 dBm...

  • Page 162: Gpib Command Interchange Function

    6.10 GPIB Command Interchange Function 6.10.1 Outline The MG3641A/MG3642A provides a GPIB command interchange mode so that it can be operated with the auto- matic measurement software written for Anritsu's MG3631A/32A or MG3633A. When using the GPIB command interchange function, set the following items before hand: (1) Press the "GPIB"...

  • Page 163: Restrictions In Mg3633Acommand Interchange Mode

    Using the step key and rotary knob to increase or decrease the frequency may not perform correctly unless a frequency step value (FIS<Numeric><Freq term>) or frequency resolution (R0 to R9) is set. • Resetting the frequency (ZFR) cannot be interchanged because the MG3641A/MG3642A does not have an equivalent function.
  • Page 164 FM deviation and EXT FM deviation become the same FM deviation. • When FM deviation is stepped up or down (UFM or DFM), the deviation changing amount of the MG3641A/ MG3642A becomes × 2, ÷ 2 as against × 10, ÷ 10 for the MG3633A.
  • Page 165 (7) Sweep • Because the sweep marker of the MG3641A/MG3642A is always on, the sweep marker ON/OFF switching commands (SF4, SO4, SF5, and SO5) are invalid. • Stepping up (SF8 and SO8) and down (SF9 and SO9) cannot be done during manual sweep.

  • Page 166: Restrictions In Mg3631A/32A Command Interchange Mode

    • Only AM modulation settings using numeric data (AM<Numeric><AM term>) are valid. Stepping up or down (MU or MD) cannot be used. • Because the MG3641A/MG3642A has only one system of AM modulation, AM MIX SOURCE cannot be used. • The Ext1 connector of Mod Input is assigned as the external modulation input.
  • Page 167 (6) Modulation signal source • Only AF frequency settings using numeric data (AF<Numeric><Freq term>) are valid. Stepping up or down (AIU or AID) and the rotary knob (AU or AD) cannot be used. • The modulation signal polarity cannot be switched (EXN or EXI). (7) Memory •...
  • Page 168 SECTION 6 GPIB (Blank) 6-62...

  • Page 169: Section 7 Performance Test

    The performance test is required when performance must be confirmed after the MG3641A/MG3642A acceptance test, periodical inspection, or repair. For important items, it should periodically be performed as the preventive maintenance. If an item that does not satisfy the standard by the performance test is detected, contact the Anritsu service division.

  • Page 170: Performance Test Device List

    SECTION 7 PERFORMANCE TEST 7.2 Performance Test Device List Table 7-1 lists the measuring instruments for calibration according to the test parameters. Test parameter Output frequency Output level frequency characteristics Output level accuracy FM frequency deviation AM modulation factor Modulation distortion * Extracts a part of performance that can cover the test parameter measurement range.

  • Page 171: Performance Test

    SECTION 7 PERFORMANCE TEST 7.3 Performance Test To confirm performance after the MG3641A/MG3642A acceptance test, periodical inspection, or repair, check the following items for performance test: • Output frequency • Output level frequency characteristics • Output level accuracy • FM deviation, FM distortion •...

  • Page 172: Output Frequency

    MG3641A/MG3642A (4) Test procedure STEP Connect the reference frequency output (10 MHz) of the frequency counter to the MG3641A/MG3642A external reference input (Ref Input). Connect the MG3641A/MG3642A output to the input of the frequency counter. (See Figure 7-1.) Set the MG3641A/MG3642A output level to +7 dBm.

  • Page 173: Output Level Frequency Characteristics

    Repeat steps 3 and 4. (5) Note on test The MG3641A/MG3642A output level is defined with the RF output connector. To measure the output level, directly connect the power sensor to the MG3641A/MG3642A RF output connector. with reference to 0 dBm ±0.5 dB...

  • Page 174: Output Level Accuracy

    Record the marker level displayed. (Ma Set the MG3641A/MG3642A output level to +16 dBm, and the MS2602A reference level to +21 dBm. Record the marker level displayed. (Ma Setting the MG3641A/MG3642A output level down to -8 dBm, repeat the measurement and record the marker level displayed.
  • Page 175 Setting the MG3641A/MG3642A output level down to -28 dBm, repeat the measurement and record the marker level displayed. (Mb Where, always set the MS2602A reference level to the larger level by 5 dB than the MG3641A/ MG3642A output level. Set the MS2602A RF attenuator to 5 dB with the same setup as in STEP 9.

  • Page 176: Fm Deviation And Fm Distortion

    • Distortion <–40 dB (FM=3.5 kHz deviation) <–45 dB (FM=22.5 kHz deviation) (2) Measuring instrument for test • Modulation analyzer • Distortion meter (3) Setup MG3641A/MG3642A (≥125 kHz, <250 kHz) (≥250 kHz, <500 kHz) (≥500 kHz, <1 MHz) (≥1 MHz, <2 MHz)
  • Page 177 Set the MG3641A/MG3642A output level to +7 dBm. Set the MG3641A/MG3642A frequency and modulation analyzer receive frequency to the expected frequency. Turn on the MG3641A/MG3642A FM, and set Source to Int1 1 kHz. Set the MG3641A/MG3642A FM frequency deviation. Read the indicator of the modulation analyzer.

  • Page 178: Am Modulation Factor And Am Distortion

    Set the MG3641A/MG3642A output level to +7 dBm. Set the MG3641A/MG3642A frequency and modulation analyzer receive frequency to the expected frequency. Turn on the MG3641A/MG3642A AM, and set Source to Int1 1 kHz. Set the MG3641A/MG3642A AM modulation factor. Read the indicator of the modulation analyzer.
  • Page 179 SECTION 7 PERFORMANCE TEST (5) Note on test The demodulation zone of the modulation analyzer must be within 0.3 to 3 kHz at measurement of the modulation factor and 0.3 to 15 kHz or 0.3 to 20 kHz at measurement of the distortion. 7-11...
  • Page 180 SECTION 7 PERFORMANCE TEST (Blank) 7-12 7-12.

  • Page 181: Section 8 Calibration

    The calibration is performed as the preventive maintenance to prevent the MG3641A/MG3642A performance from reducing. The calibration is required when the inside of this device need periodically be adjusted to maintain the MG3641A/ MG3642A performance even if the MG3641A/MG3642A itself operates normally.

  • Page 182: Calibration

    SECTION 8 CALIBRATION 8.3 Calibration For the MG3641A/MG3642A, calibrate the frequency of the built-in Reference oscillator once a half year. The stability of the MG3641A/MG3642A 10 MHz reference crystal oscillator is ±5 × 10 frequency standard, use a standard signal generator that receives the typical radio wave and subcarrier of the color telecasting (signal locked to the rubidium atomic standard) and issues a signal locked to it.
  • Page 183 After 24 hours lapsed, set the Stby/On switch on the front panel to ON. Apply the standard frequency to the external synchronization input of the oscilloscope. Also apply the output signal of the buffer output connector on the rear of the MG3641A/MG3642A to vertical axis Y of the oscilloscope.
  • Page 184 SECTION 8 CALIBRATION (Blank) 8-4.

  • Page 185: Storage And Transportation

    When detected * Do not use acetone or benzene; the paint finish may be damaged. 9.2 Storage Precautions This paragraph describes the precautions to take when storing the MG3641A/MG3642A for a long time. 9.2.1 Precautions before storage 1. Wipe any dust and fingermarks off the cabinet.

  • Page 186: Recommended Storage Conditions

    2. Wrap the MG3641A/MG3642A in plastic or similar material. 3. Obtain a cardboard, wood, or aluminum box 10 to 15 cm larger than the MG3641A/MG3642A on all sides. 4. Put the MG3641A/MG3642A in the center of the box and fill the surrounding space with shock absorbent material.

  • Page 187: Appendix Ainitial Factory Settings

    APPENDIX A INITIAL FACTORY SETTINGS Set Item Setting mode <Carrier Frequency> Carrier frequency value Frequency step value Resolution position Relative frequency mode Frequency offset value <Output Level> Output level value Level step value Resolution position Continuous mode Relative level mode Level offset value RF ON/OFF Voltage indication...
  • Page 188 APPENDIX A INITIAL FACTORY SETTINGS Set Item <Pulse Modulation> Modulation Modulation input impedance <Internal Modulation Signal Source (Int1)> Frequency <Internal Modulation Signal Source (Int2)> Frequency Waveform <Internal Modulation Signal Source (Int3)> Frequency Waveform <External Modulation Signal Source (Ext1)> Coupling <External Modulation Signal Source (Ext2)> Coupling <AF Output>...
  • Page 189 Set Item <Level Sweep> Sweep type Sweep mode Sweep pattern Start level Stop level Center level Span level Number of level steps Level step size Marker level Sweep time <Memory Sweep> Sweep mode Start address Stop address Marker address Sweep time <Memory>...
  • Page 190 APPENDIX A INITIAL FACTORY SETTINGS (Blank)

  • Page 191: Appendix Bfunction-Key Transition

    APPENDIX B FUNCTION-KEY TRANSITION APPENDIX B FUNCTION-KEY TRANSITION...
  • Page 192 APPENDIX B FUNCTION-KEY TRANSITION (Blank)
  • Page 193 Modulation Modulation [AM] Int1 0.0 % [FM1] Int1 0 Hz [FM2] Int1 0 Hz 600 Ω [PM] ↓ Audio Source [Int1] 1 kHz [Int2] 1000.00 Hz [Int3] 1000.00 Hz [Ext1] AC–Couple [Ext2] AC–Couple ↓ ↓ Main Menu (1/2) AF Output [Source] Int1 [Level]...
  • Page 194 Self Check EPROM Flash SRAM Main Menu (2/2) Chk GPIB Sys System (1/2) GPIB [Address] Factory initialize [Command] SCPI Initial memory set [Mode] Talker & Listener Initial memory clear [Bell] [Alarm] ↓ ↓ ↓ System (2/2) [Voltage unit] [Level mode] [Isolation mode] ↓...
  • Page 195 Sweep Sweep Frequency Frequency < Start-Stop > < Center-Span > 1000k 100000k 1000k 50500k [Marker] 1000k [Marker] 1000k Prmt Prmt Freq Sweep Parameter (1) Freq Sweep Parameter (1) [Start] 1000000.00 Hz [Center] 50500000.00 Hz [Stop] 100000000.00 Hz [Span] 99000000.00 Hz [Pattern] [Pattern] Lin- F...
  • Page 196 (Blank) B-6 .

  • Page 197: Appendix Cfront And Rear Panel Layout

    APPENDIX C FRONT AND REAR PANEL LAYOUT APPENDIX C FRONT AND REAR PANEL LAYOUT...
  • Page 198 APPENDIX C FRONT AND REAR PANEL LAYOUT (Blank)
  • Page 200 C-4.

  • Page 201: Appendix D Index

    Note : The number at the right side indicates the paragraph number for the word at the left side. 12 dB SINAD 20 dB NQ A）  AC AC line voltage        Address        AF     AF DDS AF Output Alarm       ...
  • Page 202 APPENDIX D INDEX D） digital synthesizer E） EMI radiation Entr               Error message               external modulation     F） Factory initiarize        F-Ofs     Freq Freq Adj Freq & Level Freq Step Size Freq Talk frequency offset frequency offset value frequency relative value Fuse G）...
  • Page 203 L） Level Continuous Mode Level mode Level offset value        Level Safety Mode        Level Step Size     Listen Only L-Ofs long form        Lvl Talk M） Manual Marker Out        Mem     Memory memory address        Memory Block Select Memory Set MG3631A/32A MG3633A...
  • Page 204 APPENDIX D INDEX P） Performance test        polarity of modulation signal preset memory        Prmt        Pulse Modulation     Q） Query R） Recall Recall Mode        receiver        Rel Freq     Rel Level        Reverse Power Protection     reverse power protector       ...
  • Page 205 sweep auxiliary output Sweep Parameter        System     T） Talker & Listener terminated-voltage display     thermal protector     transmitter     Tree        Trig     Trigger Program U） Uncal undesired radiation     Unit type     V） Voltage unit X） X Out Z）...
  • Page 206 APPENDIX D INDEX (Blank)

  • Page 207: Appendix E Performance Test Results Sheet

    APPENDIX E PERFORMANCE TEST RESULTS SHEET APPENDIX E PERFORMANCE TEST RESULTS SHEET This section shows examples of the performance test results sheets for the performance test of the MG3641A/MG3642A. Copy these sheets to record the test result.
  • Page 208 APPENDIX E PERFORMANCE TEST RESULTS SHEET Test site: Model name MG364 A Synthesized Signal Generator Mfg. No. AC power freq. Note: Output frequency (Para. 7.3.1) Setting 130 kHz 1 MHz 10 MHz 100 MHz 200 MHz 300 MHz 500 MHz 1000 MHz 1500 MHz 2000 MHz...
  • Page 209 Output level accuracy (Para.7.3.3) Min. Output level spec. +17 dBm -1 dB +13 dBm -1 dB +7 dBm -1 dB +6 dBm -1 dB +5 dBm -1 dB +4 dBm -1 dB +3 dBm -1 dB +2 dBm - 1 dB +1 dBm -1 dB 0 dBm...
  • Page 210 APPENDIX E PERFORMANCE TEST RESULTS SHEET FM deviation accuracy (Para. 7.3.4) Setting Freq. FM dev. 300 Hz 1 kHz 10 MHz 3 kHz 10 kHz 300 Hz 1 kHz 3 kHz 100 MHz 10 kHz 30 kHz 100 kHz 300 Hz 1 kHz 3 kHz 500 MHz...
  • Page 211 FM distortion (Para. 7.3.4) FM dev. 3.5 kHz 22.5 kHz AM mod. factor accuracy (Para. 7.3.5) Min. AM dep. spec. 10 % 7.5 % 30 % 26.5 % 50 % 45.5 % 80 % 74.0 % 90 % 83.5 % AM distortion (Para.
  • Page 212 APPENDIX E PERFORMANCE TEST RESULTS SHEET This sheet is used for the calculation at measurement of output level accuracy (para. 7.3.3). Copy this at the measurement. Calculation sheet for output level accuracy (Measurement frequency: MG3641A Pre- STEP /MG3642A amp. Level setting...

This manual is also suitable for:

Mg3642a

Table of Contents

Save PDF