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NF DF 1906 Instruction Manual

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DIGITAL FUNCTION GENERATOR
DF 1906
INSTRUCTION MANUAL
NF Corporation

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Summary of Contents for NF DF 1906

  • Page 1 DIGITAL FUNCTION GENERATOR DF 1906 INSTRUCTION MANUAL NF Corporation...
  • Page 3 DA00057652-001 DIGITAL FUNCTION GENERATOR DF 1906 INSTRUCTION MANUAL...
  • Page 4 Trademarks National Instruments is a registered trademark of National Instruments Corporation in the United States. Other company names and product names used in this instruction manual may be trademarks or registered trademarks of their respective companies.
  • Page 5 Preface Thank you for purchasing our "DF 1906 Digital Function Generator". Please read "Safety Precautions" on the next page first to ensure the product is used in a correct and safe manner. ■ Caution Symbols Used in This Manual The following caution symbols used in this manual.

  • Page 6: Safety Precautions

    ──── Safety Precautions ──── To ensure safe use, be sure to observe the follow ing warnings and cautions. NF Corporation shall not be held liable for damages that arise from a failure to observe these warnings and cautions. This product is a Class I device (with protective conductor terminal) that conforms to the IEC insulation standards.
  • Page 7 Safety Precautions ● Do not modify this product. Never modify the product. Modification of the product could cause an unexpected risk. NF Corporation may refuse to repair a modified product that has failed. ● Safety symbols The general definitions of the safety symbols used on the product body and in the instruction manual are provided below.
  • Page 8 - iv - DF1906...

  • Page 9: Table Of Contents

    Table of Contents Page 1． Overview ........................1-1 1.1 Features........................1-2 1.2 Applications......................... 1-2 1.3 Function List ....................... 1-3 1.4 Operating Principle ..................... 1-4 2． Preparation Before Use ....................2-1 2.1 Checking Before Use ....................2-2 2.2 Installation........................2-3 2.3 Grounding and Power Connection................2-4 2.4 Simplified Operation Check ..................
  • Page 10 Table of Contents 4． Advanced Operations ....................4-1 4.1 Symmetry and Duty Ratio ................... 4-2 4.1.1 Set Symmetry (Ramp Wave) ................4-2 4.1.2 Set Duty Ratio (Square Wave) ................4-2 4.2 Oscillation Mode-related Settings ................4-3 4.2.1 Set Mark Wave Number ..................4-3 4.2.2 Set Space Wave Number ...................
  • Page 11 Table of Contents 7． Maintenance........................7-1 7.1 Preface ........................7-2 7.2 Daily Maintenance ...................... 7-2 7.3 Storage, Repacking, and Transportation ..............7-2 7.4 How to Check Version Number................... 7-3 7.5 Performance Test......................7-3 7.5.1 Frequency Accuracy Test ................... 7-4 7.5.2 Amplitude Frequency Characteristic Test ............7-4 7.5.3 Sine Wave Distortion Test ..................
  • Page 12 Figure 8-1 External Dimensions Diagram······························································· 8-9 Table 2-1 Configuration List ··············································································· 2-2 Table 3-1 Initial Settings ····················································································· 3-9 Table 5-1 DF 1906 Command List ········································································· 5-3 Table 5-2 Common Commands ············································································ 5-4 Table 5-3 Definition of Status Byte Register····························································5-17 Table 5-4 Definition of Standard Event Status Register ··············································5-18...

  • Page 13: Overview

    1． Overview 1.1 Features····························································· 1-2 1.2 Applications························································· 1-2 1.3 Function List························································· 1-3 1.4 Operating Principle ················································ 1-4 DF1906...

  • Page 14: Features

    1.1 Features 1.1 Features The "DF 1906 Digital Function Generator" is a function generator based on a direct digital synthes izer (DDS), which is small, light, and low-priced but features high accuracy and sophisticated functionality. ・ Oscillation frequency： 0.1 mHz to 2 MHz, setting resolution: 0.1 mHz. Frequency accuracy: ±25 ppm.

  • Page 15: Function List

    1.3 Function List 1.3 Function List The following shows a function tree. Output Output On/Off Select Output On/Off State at Power On Return to State at Last Power Off Always On Always Off Oscillation Mode Continuous Oscillation Burst Oscillation Mark Wave Number Space Wave Number Select SYNC OUT Function Phase...

  • Page 16: Operating Principle

    1.4 Operating Principle 1.4 Operating Principle SYNC OUT FUNCTION Others TRIG IN Figure 1-1 Block Diagram ・ CPU performs analog control, such as display panel control, panel key and dial process, US B remote control process, DDS control, amplitude, and DC offset. ・...

  • Page 17: 2． Preparation Before Use

    2． Preparation Before Use 2.1 Checking Before Use ··································· 2-2 Installation ················································ 2-3 2.3 Grounding and Power Connection ···················· 2-4 2.4 Simplified Operation Check ··························· 2-5 2.5 Calibration ················································· 2-6 DF1906...

  • Page 18: Checking Before Use

    2.1 Checking Before Use ■ Safety Check Please read "Safety Precautions" at the beginning of this instruction manual before us ing the DF 1906 to ensure safety. Furthermore, before connecting to the power supply, read "2.3 Grounding and Power Connection" to ensure safety.

  • Page 19: Installation

    Install with a minimum clearance of 10 cm from the wall, etc. ・ To install the DF 1906 w ith the rear panel facing down, be sure to rais e the legs in the upper part of the rear panel.

  • Page 20: Grounding And Power Connection

    CAUTION ！ To prevent damage to the DF 1906, check that the voltage of the power outlet is within the power supply voltage of the DF 1906 and then connect to the power outlet. The DF 1906 operates from the following power outlet.

  • Page 21: Simplified Operation Check

    ・ When you press [TRIG / CLEAR ] key, "CLEAR" appears.  "4.3.1 Setting Memory" 3. Connect an oscilloscope to the FUNCT ION OUT connector of the DF 1906 with a BNC cable. ・ For example, configure the oscilloscope as follows. ・ Input impedance: 1 MΩ...

  • Page 22: Calibration

    Furthermore, it is recommended to perform the performance test before us ing the equipment for important measurements and tests. If the performance test results do not satisfy the standards, NF Corporation w ill perform adjustment or calibration to restore the original performance.

  • Page 23: 3． Explanation Of Panels And Basic Operations

    3． Explanation of Panels and Basic Operations 3.1 Panel Part Names and Operations ····················· 3-2 3.2 Display at Power On and Initial Settings ·············· 3-5 3.2.1 Before Powering On ······························· 3-5 3.2.2 Display at Power On ······························· 3-6 3.2.3 Initial Settings ······································· 3-6 3.3 I/O Connector···············································...

  • Page 24: Panel Part Names And Operations

    3.1 Panel Part Names and Operations 3.1 Panel Part Names and Operations This section describes the front panel and rear panel part names and operations of the DF 1906. DF1906...

  • Page 25: Figure 3-1 Front Panel

    Front Panel Manual trigger in the trigger/gate osc illation mode "3.5.7 Select Oscillation Mode" Also used to set the numbers on the left and right of the cursor to zero when setting a numeric value Set the amplitude and DC offset "3.5.2 Set Numeric Value"...
  • Page 26 Rear Panel (Blank) DF1906...

  • Page 27: Figure 3-2 Rear Panel

    Rear Panel POWER Switch To install with the rear panel fac ing down, The upper pos ition is on be sure to raise the legs Power inlet The lower pos ition is off "2.2 Installation" Nomenc lature plate Certification label Figure 3-2 Rear Panel DF1906...
  • Page 28 Rear Panel (Blank) DF1906...

  • Page 29: Display At Power On And Initial Settings

    The maximum power consumption is 25 VA. CAUTION ！ To prevent damage to the DF 1906, check that the voltage of the power outlet is within the power supply voltage of the DF 1906 and then connect to the power outlet. WARNING ！...

  • Page 30: Display At Power On

    Then "DF 1906" and version are displayed in the right part of the display panel. A self-check of ROM and RAM is performed during this display. If an error is detected in ROM/RAM, the follow ing messages are displayed.

  • Page 31: Table 3-1 Initial Settings ·····················································································

    3.2 Display at Power On and Initial Settings Table 3-1 Initial Settings The initial setting values are shown in the table below. Factory default Setting item Initial value Memory initialized or data failure ○ ○ Frequency 1kHz ○ ○ Cursor position 1Hz digit ○...

  • Page 32: I/O Connector

    ！ Do not short-circuit the output and do not apply a s ignal from outside. The DF 1906 may be damaged. ・ About Output Limit If the output voltage exceeds ±5 V/open (±2.5 V/50 Ω), the output may be clipped depending on the relationship between the amplitude and DC offset setting values.

  • Page 33: Figure 3-4 Sync Out ······················································································

    ！ Do not short-circuit the output and do not apply a s ignal from outside. The DF 1906 may be damaged. ・ At Time of Continuous Oscillation The relationship between F UNCT ION OUT s ignal and SYNC OUT s ignal at the time of continuous oscillation is as shown in the figure below.
  • Page 34 I/O Connector ・ Ramp Wave Symmetry Variable The relationship between F UNCT ION OUT s ignal and SYNC OUT s ignal when the ramp wave symmetry is changed is as shown in the figure below. (Upper line: FUNCT ION OUT, lower line: SYNC OUT) 100% ・...

  • Page 35: Input Connector

    Low Level ≦+1.0 V Input V oltage Range : -0.5 V to +5.5 V Minimum Pulse Width : 200 ns CAUTION ！ Do not apply a voltage exceeding the above input voltage range. The DF 1906 may be damaged. 3-13 DF1906...

  • Page 36: I/O Connection

    I/O Connection 3.4 I/O Connection ■ Waveform Output (FUNCTION OUT) The output impedance of F UNCT ION OUT connector is 50 Ω. (Open when the output is off.) To maintain the flatness and waveform quality of the amplitude frequency characteristics, use a coaxial cable with a characteristic impedance of 50 Ω...

  • Page 37: Basic Operations

    Basic Operations 3.5 Basic Operations 3.5.1 Display The display panel of the DF 1906 is a 40-digit, two-line LCD and displays the items as shown in the figure below. DC Offset （ Lo w Level） Frequency A mp litude (High Level) Ｆ...

  • Page 38: Select Setting Value

    Basic Operations 3.5.3 Select Setting Value ■ Cursor The cursor is also displayed in the waveform and oscillation mode. However, the cursor is invalid. ■ Modify When you turn the [MODIFY] dial, the option in the item where the cursor is displayed changes. 3.5.4 Set Frequency When you press the frequency setting key [FREQUENCY], the cursor moves to the frequency setting value (on the right of the "F"...

  • Page 39: Set Amplitude And Dc Offset

    3.5.5 Set Amplitude and DC Offset "Amplitude" indicates the AC amplitude of an output signal, and "DC offset" indicates the median of an output signal. When H (High Level) and L (Low Level) are displayed,  "4.3.4 Set by High Level/Low Level" ...

  • Page 40: Select Waveform

    3.5. Basic Operations 3.5.6 Select Waveform The DF 1906 allows you to select a total of 8 types of waveforms : sine wave/ramp wave/square wave/DC, as well as 4 types of arbitrary waveforms (ARB). When you press waveform selection key [F UNCT ION] , move the cursor to the waveform display, and turn the [MODIFY] dial, the waveform can be selected.

  • Page 41: Select Output On/Off

    3.5. Basic Operations The burst/trigger/gate oscillation stops in the set phase when the oscillation is stopped.  "4.2.4 Set Phase" Set Phase The oscillation wave number (mark wave number) can be set for burst/trigger oscillation.  Set Oscillation Wave Number "4.2.1 Set Mark Wave Number"...
  • Page 42 (Blank) 3-20 DF1906...

  • Page 43: 4． Advanced Operations

    4． Advanced Operations 4.1 Symmetry and Duty Ratio ································ 4-2 4.1.1 Set Symmetry (Ramp Wave) ······················· 4-2 4.1.2 Set Duty Ratio (Square Wave) ····················· 4-2 4.2 Oscillation Mode-related Settings ······················· 4-3 4.2.1 Set Mark Wave Number ·························· 4-3 4.2.2 Set Space Wave Number ···························· 4-3 4.2.3 Select SYNC OUT Function·························...

  • Page 44: Symmetry And Duty Ratio

    Symmetry and Duty Ratio 4.1 Symmetry and Duty Ratio 4.1.1 Set Symmetry (Ramp Wave) When the ramp wave is selected, the symmetry can be changed. When you press waveform select key [FUNCTION] once again while the cursor is located in the waveform display, the cursor moves to the symmetry setting value.

  • Page 45: Oscillation Mode-Related Settings

    Oscillation Mode-related Settings 4.2 Oscillation Mode-related Settings 4.2.1 Set Mark Wave Number When the burst oscillation or trigger oscillation is selected in the oscillation mode, the mark wave number can be changed. Mark wave number refers to the "oscillation wave number" for burst oscillation and trigger oscillation.

  • Page 46: Select Sync Out Function

    Oscillation Mode-related Settings 4.2.3 Select SYNC OUT Function When any of the burst oscillation/trigger oscillation/gate oscillation is selected in the oscillation mode, the SYNC OUT function can be changed. When you press oscillation mode select key [MODE] several times, "SyncOut" is displayed in the center of the lower line and the cursor moves to the top of it. When you turn the [MODIFY] dial in this state, the SYNC OUT output function can be selected.

  • Page 47: Select Trig In Effective Polarity (Trigger Oscillation)

    Oscillation Mode-related Settings 4.2.5 Select TRIG IN Effective Polarity (Trigger Oscillation) When the trigger oscillation is selected in the oscillation mode, the effective polarity of the TRIG IN input connector can be changed. When you press oscillation mode select key [MODE] several times, "TrigSlope"...

  • Page 48: Special Menu

    4.3 Special Menu 4.3.1 Setting Memory ■ Setting Memory Overview The DF 1906 has setting memory that can store 20 settings, out of which you can select the setting memory content to use. When you change the frequency, amplitude, or other setting, the change is saved to the setting memory that is selected at that time.

  • Page 49: Select Output At Power On

    Special Menu 4.3.2 Select Output at Power On When the power of the DF 1906 is turned on, the settings of almost all items are restored to the settings at power off. However, you can select the output on/off state at power on.

  • Page 50: Set By High Level/Low Level

    Special Menu 4.3.4 Set by High Level/Low Level The output voltage can be set by high level/low level, in addition to by amplitude/DC offset, to make it easy to set various logic levels, etc. Press special menu key [SPECIAL] to enter the output voltage setting method selection mode ("AmpHi/Lo"...

  • Page 51: 5． Usb Interface

    5． USB Interface 5.1. Preparation Before Use ·································· 5-2 5.2 Command List··············································· 5-3 5.3 Explanation of Commands ······························· 5-6 5.3.1 Language Overview ·································· 5-6 5.3.1.1 Subsystem Commands ························· 5-6 5.3.1.2 Path Separator ··································· 5-6 5.3.1.3 Command String Simplification ··············· 5-6 5.3.1.4 Suggestion Keyword ····························...

  • Page 52: Preparation Before Use

    Preparation Before Us e 5.1 Preparation Before Use The DF 1906 can be controlled by the USB Test and Measurement Class (hereinafter USB-T MC). Almost all panel operations can be controlled and internal conditions such as setting values and errors can be read.

  • Page 53: Command List

    Command List 5.2 Command List Table 5-1 shows a DF 1906 Command List. Table 5-2 shows IEEE488.2 common commands corresponding to those in the DF 1906. Symbols used in Table 5-2 have the meanings defined below. The lower-case characters in keywords indicate that they can be omitted.

  • Page 54: Table 5-2 Common Commands ············································································

    Command List Table 5-2 Common Commands Common Command Name Function and Query *CLS Clear Status Command Clears the standard event status register. *ESE Standard Event Status Enable Sets the standard event status enable Command register. *ESE? Standard Event Status Enable Queries the setting of the standard event Query status enable register.
  • Page 55 Command List ■ Input Buffer ・ Commands can be transmitted to the input buffer at one time until the capac ity of the input buffer (10,000 characters) is reached. ・ The transmitted commands are stored in the input buffer once and interpreted and executed one by one.

  • Page 56: Explanation Of Commands

    Explanation of Commands 5.3 Explanation of Commands 5.3.1 Language Overview The following describes an overview of the language. 5.3.1.1 Subsystem Commands Commands are grouped into some sets of remote control commands corresponding to the function groups of this equipment. Each subsystem command has a hierarchical structure and a colon (:) is defined as the path separator.

  • Page 57: Suggestion Keyword

    ・ Angle brackets (< >) indicate that a numeric value needs to be spec ified. [Remarks] ・ The DF 1906 commands include both commands and queries. Herein both are called commands for convenience sake. "?" at the end of a keyword indicates a query.
  • Page 58 Explanation of Commands ・ [:SOURce]:VOLTa ge[:LEVe l][:IMMe diate][:AMPLitude] <amplitude> VPP|VRMS [:SOURce]:VOLTage[:LEVel][:IMMe diate ][:AMPLitude]? Explanation: Sets/queries the outpu t voltage. Parameter: Ou tput voltage [Vp-p] or [Vrms] 0.000 (0 Vp-p) to 10.000 (10 Vp-p) 0.000 (0 Vrms) to 3.535 (3.535 Vrms) Response: Returns the setting voltage in [Vp-p].
  • Page 59 Explanation of Commands ・ [:SOURce]:VOLTa ge[:LEVe l][:IMMe diate]:HIGH <high> [:SOURce]:VOLTage[:LEVel][:IMMe diate ]:HIGH? Explanation: Sets/queries the h igh-level voltage. Parameter: High level [V] -5.000 (-5 V) to +5.000 (+5 V) Response: Returns the set high-level voltage in [V]. Nu meric data is transferred as ASCII byte in NR2 format. ex) VOLT:HIGH? 5.000 ・...
  • Page 60 Explanation of Commands ・ [:SOURce]:FUNCtion:RAMP:SYMMe try <s ymmetry> [:SOURce]:FUNCtion:RAMP:SYMMetr y? Explanation: Sets/queries the symmetry of the ramp wave. Parameter: Sy mmetry [%] 0.0 (0%) to 100.0 (100%) Response: Returns the set sy mmetry in [%]. Nu meric data is transferred as ASCII byte in NR2 format. ex) FUNC:RAMP:SYMM? 50.0 ・...
  • Page 61 Explanation of Commands ・: TRACe |DATA[:DATA] <binar y block> Explanation: Prepares for transferring the arbitrary waveform data. When this command is set and then a binary data block is transferred, it is recorded as arbitrary waveform data in the waveform memory. Parameter: Tran sfer data length, Use "#48192."...
  • Page 62 Explanation of Commands ・ [:SOURce]:BURSt: SPACes <num space> [:SOURce]:BURSt:SPACes? Explanation: Sets/queries the stop wave number for burst oscillation. Parameter: Stop wave number 0.5 to 256 Response: Returns the set stop wave number. Nu meric data is transferred as ASCII byte in NR2 format. ex) BURS:SPAC? 10.0 Remark: The stop wave nu mber can be set in increments of 0.5 wave for burst oscillation...
  • Page 63 Explanation of Commands ・:TRIGger[:SEQuence]:SLOPe {POSitive |NEGative} :TRIGger[:SEQue nce]:SLOPe ? Explanation: Sets/queries the slope where the trigger inpu t is validated. Parameter: POSitive (Rise) NEGative (Fall) Response: Returns POS or NEG. ex) TRIG:SLOP? ・[:SOURce]:BURSt:GATE:POLarity {NORMal|INVerted} [:SOURce]:BURSt:GATE:POLar ity? Explanation: Sets/queries the level where the gate inpu t is validated. Parameter: NORMal(HIGH) INVerted(LOW)
  • Page 64 Explanation of Commands ・:SYSTem :PON[:OUTPut] {POFF|PON|LAST} :SYSTem :PON[:OUTPut]? Explanation: Sets/queries the outpu t state immediately after power on. Parameter: POFF (Power off) PON (Power on) LAST (Outpu t state at power off) Response: Returns any of POFF, PON, and LAST. ex) SYST:PON? POFF ・:OUTPut:IMPe dance {0 |1}...

  • Page 65: Command Tree

    Command Tree 5.4 Command Tree Figure 5-1 shows the command tree for each DF 1906 subsystem. Figure 5-1 Command Tree 5-15 DF1906...

  • Page 66: Status System

    Status System 5.5 Status System The DF 1906 has a minimum set of status groups defined in IEEE488.2. Figure 5-2 shows a status system of the DF 1906. Standard Event PON URQ CME EXE DDE QYE RQS OPC Status Resister ＆...

  • Page 67: Status Byte Resister

    Status System 5.5.1 Status Byte Resister Table 5-3 shows the definition of the status byte resister. The bits that are set to 1 are validated in the service request enable register and the status byte register uses the logical OR of the valid bits to generate a service request.

  • Page 68: Standard Event Status Register

    Status System 5.5.2 Standard Event Status Register Table 5-4 shows the definition of the standard event status register. When a bit in the standard event status enable register is set to 1, the corresponding bit in the standard event status register becomes effective, and when any effective bit in that register becomes 1, the ESB bit in the status byte register is set to 1.

  • Page 69: Notes For Programming

    Notes for P rogramming 5.6 Notes for Programming ■ Remote There is no remote state for this equipment. The panel operation is possible while the equipment is controlled by a PC, so make sure that you do not accidentally change the settings by unintentional panel operation.
  • Page 70 (Blank) 5-20 DF1906...

  • Page 71: 6． Troubleshooting

    6． Troubleshooting 6.1 Error Messages ············································· 6-2 6.1.1 Errors at Power On ··································· 6-2 6.1.2 Errors of Remote Control via USB················· 6-2 6.2 Troubleshooting············································· 6-3 DF1906...

  • Page 72: Error Message

    Error Message Cause Necessary Action Internal ROM ROM CHECK ERROR sum check error. Contact NF Corporation or one of our agents. Internal RAM RAM CHECK ERROR read/write error. If this error message is still displayed after turning the power off and back...

  • Page 73: Troubleshooting

    Buffer (256 bytes) for storing response messages overflowed. 6.2 Troubleshooting If you suspect a problem, take any of the following remedial actions. If the problem still cannot be resolved, contact NF Corporation or one of our agents. Description Possible Cause...
  • Page 74 DF1906...

  • Page 75: 7． Maintenance

    7． Maintenance 7.1 Preface ······················································· 7-2 7.2 Daily Maintenance ········································· 7-2 7.3 Storage, Repacking, and Transportation ·············· 7-2 7.4 How to Check Version Number ·························· 7-3 7.5 Performance Test··········································· 7-3 7.5.1 Frequency Accuracy Test ···························· 7-4 7.5.2 Amplitude Frequency Characteristic Test ········ 7-4 7.5.3 Sine Wave Distortion Test ···························...

  • Page 76: Preface

    This instruction manual describes easy performance testing procedures. For advanced inspection, adjustment, calibration and fault repair, contact NF Corporation or one of our agents. The following measurement equipment is required for performance testing.

  • Page 77: How To Check Version Number

    7.4 How to Check Version Number The firmware vers ion of the DF 1906 is displayed for several seconds in the lower right part at power The version number can also be read by USB remote control query command "* ID N ? ".

  • Page 78: Frequency Accuracy Test

    7.5 Performance Test 7.5.1 Frequency Accuracy Test Connection: FUNCT ION OUT → Frequency counter input (50 Ω termination) Use a coaxial cable. Setting: Frequency 100 kHz, Amplitude 10 Vp-p/open, square wave after initializing the settings Measurement: Measure the frequency with a frequency counter. Judgment: ±25 ppm (99.9975 kHz to 100.002 5 kHz）...

  • Page 79: Amplitude Accuracy Test

    7.5 Performance Test 7.5.5 Amplitude Accuracy Test Connection: FUNCT ION OUT → AC voltmeter (high accuracy type) (no 50 Ω termination) Use a coaxial cable. Setting: Amplitude display unit Vrms after initializing the settings Measurement: Change the amplitude setting and measure the RMS voltage [Vrms]. Judgment: Within the rating range in the table below , Pass Amplitude...

  • Page 80: Calibration

    Calibration 7.6 Calibration If the performance test results do not satisfy the standards, NF Corporation w ill perform adjustment or calibration to restore the original performance. If calibration is required, contact NF Corporation or one of our agents. Charges apply for the calibration service.

  • Page 81: 8． Specifications

    8． Specifications 8.1 Waveform and Output Characteristics ················· 8-2 8.2 Output Voltage ·············································· 8-4 8.3 Other Functions············································· 8-5 8.4 Details of Initialization ····································· 8-6 8.5 General Specifications ···································· 8-7 Values indicating the accuracy (range) are guaranteed values. Values without accuracy are typical values. DF1906...

  • Page 82: Waveform And Output Characteristics

    Waveform and Output Characteristics 8.1 Waveform and Output Characteristics ・ Waveforms (FUNCTION OUT) Output waveforms Sine Wave, Ramp Wave (symmetry variable), Square Wave (duty variable), DC, Arbitrary Wave Waveform vertical resolution 12 bits Output waveforms, frequenc Sine Wave, Square Wave (duty ratio 50%) : 0.1 mHz to 2 MHz Ramp Wave, Square Wave (duty ratio other than 50%), Arbitrary Wave, and Burst/Trigger/Gate modes : 0.1 mHz to 50 kHz...
  • Page 83 Waveform and Output Characteristics ・ Output characteristics (FUNCTION OUT) Frequency characteristics of amplitude Sine Wave, continuous oscillation, 50 Ω load, 0 V DC offset, 5 Vp-p/50 Ω amplitude, frequency 1 kHz reference, RMS value measurement 100 kHz or lower : ±0.2 dB 100 kHz to 2MHz :+1, -3 dB Sine wave continuous oscillation, 50 Ω...

  • Page 84: Output Voltage

    Output Voltage 8.2 Output Voltage ・ Signal output (FUNCTION OUT) Amplitude Setting/Display unit Sine Wave : Vp-p/Vrms (Selectable) Other than Sine Wave : Vp-p only In addition to the amplitude and DC offset, high level and low leve l are available for setting/displaying. 50 Ω...

  • Page 85: Other Functions

    Other Functions 8.3 Other Functions ・ Oscillation mode Oscillation mode CONT, BRST, TRIG, GA T E CONT : Continuous oscillation. BRST : Repeats oscillation of the mark wave number, and stop of the space wave number. TRIG : Performs oscillation of the mark wave number by the trigger signal GA T E : Performs oscillation while the gate signal is valid.
  • Page 86 Other Functions ・ Settings backup, setting memory Settings backup Backup by lithium battery Backup period For 3 years or more, when storage at room temperature (battery replacement is charged) State at power on Almost all settings are restored to the state at power off. Setting memory Stores almost all setting items Setting memory number...

  • Page 87: Details Of Initialization

    Details of Initialization 8.4 Details of Initialization ・ Details of Initialization Refer to "Table 3-1 Initial Settings" in "3.2.3 Initial Settings" ・ When Errors Occur in Event of Battery Depletion Refer to "Table 3-1 Initial Settings" in "3.2.3 Initial Settings" DF1906...

  • Page 88: General Specifications

    General Specifications 8.5 General Specifications ・ I/O ground Connect all s ignal I/O ground by wires to the chassis. ・ Remote interface USB interface (USB 1.1 full speed) USB-TMC ・ Power supply Power supply voltage range 100-240 V ±10%, but 250 V or less Frequency range 50/60 Hz ±...

  • Page 89: Figure 8-1 External Dimensions Diagram

    General Specifications Figure 8-1 External Dimensions Diagram DF1906...
  • Page 91 NF or an agent designated by NF. Purchaser shall prepay all shipping charge, duties and taxes for the product to either NF or the agent from another country, and shipping charge for the return of the product to purchaser shall be paid by NF side.
  • Page 93 • We assume no responsibility for influences resulting from the operations in this manual. DF 1906 INSTRUCTION MANUAL NF Corporation 6-3-20, Tsunashima Higashi, Kohoku-ku, Yokohama 223-8508 JAPAN...
  • Page 96 NF Corporation 6-3-20, Tsunashima Higashi, Kohoku-ku, Yokohama 223-8508 JAPAN...

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