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WF1973/WF1974

1.

OVERVIEW

1.1 Features

The WF1973 and WF1974 are multifunctional generators based on direct digital synthesizers
(DDS).
The WF1973 is a 1-channel generator, while the WF1974 is a two-channel generator.

• Highest frequency: 30 MHz (sine wave), 15 MHz (square wave, pulse)
• Frequency accuracy: ±(3 ppm + 2 pHz), high resolution of 0.01

µ

Hz. 10 MHz external

frequency reference can be used.

• Maximum output voltage: 20 Vp-p/open, 10 Vp-p/50

Ω

• Large number of standard parameter-variable waveforms: Sine wave, square wave

(variable duty), pulse (variable pulse width/duty, leading edge time, trailing edge time),
ramp wave (variable symmetry), CF controlled sine wave (variable crest factor), staircase
sine wave (variable number of steps), Gaussian pulse (variable

σ

), Sin(x)/x (variable

number of zero crossings), exponential rise/fall (variable time constant), damped
oscillation (variable oscillation frequency, damping time constant), pulse surge (variable
rising and duration times), trapezoid (variable rise, fall, and upper base width), and so on.

• Large-capacity arbitrary waveform memory: 512 K words max., saving capacity: 128

waveforms/4 M words

• Phase and waveform remain continuous even when frequency is changed or during

frequency sweep.

• Square wave, pulse with variable duty and high resolution of 0.0001%
• Pulse with variable leading edge time and trailing edge time
• Various oscillation modes

• Continuous oscillation
• Modulation: FM, FSK, PM, PSK, AM, DC offset modulation, PWM
• Sweep: Frequency, phase, amplitude, DC offset, duty
• Burst oscillation: Auto burst, trigger burst, gate oscillation, triggered gate oscillation
• Sequence oscillation: Variable waveform/ frequency/ phase/ amplitude/ DC offset/

square wave duty, constant value/ linear interpolation, jump/ repeat/ hold/ branch

• Sequence function for easy test waveform creation and adjustment

Flexible waveform creation possible through combination with standard parameter-
variable waveforms
Frequency, phase, amplitude, etc., can be rapidly changed and swept

• Intuitive user interface through use of high-resolution QVGA TFT color LCD
• Two-channel ganged function with 2 phases, constant frequency difference, constant

frequency ratio, and differential output (only WF1974)

• Floated from housing for each channel to reduce effect of ground loop
• Multiple-phase oscillator can be configured by synchronizing multiple units
• USB and GPIB interfaces provided
• Thin and lightweight: Height of approx. 9 cm, weight of approx. 2.1 kg

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Содержание WF1973

Страница 1: ...MULTIFUNCTION GENERATOR WF1973 WF1974 Instruction Manual Basics NF Corporation...

Страница 2: ...MULTIFUNCTION GENERATOR WF1973 WF1974 Instruction Manual Basics DA00016809 001...

Страница 3: ...and USB are provided separately If reading this manual for the first time start from 1 OVERVIEW of the Basics Instruction Manual Basics 1 OVERVIEW Briefly describes and explains the features and brie...

Страница 4: ...NCY REFERENCE Describes how to use external frequency reference 6 USING SEQUENCE OSCILLATION Describes how to set and operate sequence oscillation 7 USING USER DEFINED UNITS Explains the units that ca...

Страница 5: ...on adapter When using a separately sold 3 prong to 2 prong conversion adapter be sure to connect the green grounding wire of the adapter to the grounding terminal next to the outlet Check the power su...

Страница 6: ...injury while handling this product Caution Symbol This symbol indicates information for preventing damage to the product when handling it Other symbols This symbol indicates that the external conducto...

Страница 7: ...form output FCTN OUT 12 3 2 2 Sync sub output SYNC SUB OUT 13 3 2 3 External modulation addition input MOD ADD IN 14 3 2 4 External trigger input TRIG IN 14 3 2 5 External 10 MHz frequency reference i...

Страница 8: ...tting DC offset 50 4 4 9 Setting the output level with high level low level 51 4 4 10 Setting the waveform polarity and amplitude range 52 4 4 11 How to use auto range range hold for the output voltag...

Страница 9: ...Recalling Settings 124 6 LIST OF INITIAL SETTINGS 126 7 SPECIFICATIONS 129 7 1 Oscillation Modes 129 7 2 Waveforms 129 7 2 1 Standard waveforms 129 7 2 2 Arbitrary waveforms 129 7 3 Frequency Phase 13...

Страница 10: ...ons for 1 unit 149 Inch rack mounting dimensions for 2 units 150 Millimeter rack mounting dimensions for 1 unit 151 Millimeter rack mounting dimensions for 2 units 152 Index 153 WARRANTY 157 Figures a...

Страница 11: ...Phase and waveform remain continuous even when frequency is changed or during frequency sweep Square wave pulse with variable duty and high resolution of 0 0001 Pulse with variable leading edge time...

Страница 12: ...le gain amplifier PGA The external addition signal and DC offset are added to the PGA output When an output voltage exceeding 2V open is required output is done via the 5 amplifier The maximum output...

Страница 13: ...o synchronize multiple units is sent to REF OUT frequency reference output and the inter channel sync WF1974 only is sent to the analog block of each channel Power supply block The AC DC directly conn...

Страница 14: ...n the product or an accessory is missing contact NF Corporation or its representative Appearance check Check that no abnormalities such as a flaw and dent are found on the panel controls connectors an...

Страница 15: ...eet and stands on the bottom side rest on that surface b Installation location conditions This product uses a fan for forced air cooling and features air intake and exhaust vents on the side and rear...

Страница 16: ...ventilation openings and forcibly cool the inside of the rack with fans For external dimensions for rack mounting refer to Inch rack mounting dimensions for 1 unit p 149 Inch rack mounting dimensions...

Страница 17: ...is designed to be used for this equipment only Do not use this power cord for other equipment or purposes 2 4 Calibration This equipment should undergo performance testing about once a year as a guide...

Страница 18: ...111 115 120 Triggered lamp Lights when a trigger is accepted pp 90 111 115 120 LCD panel Power switch p 21 NEXT key Press to switch setting screen pages p 26 UNDO key Press to undo setting changes p 3...

Страница 19: ...ear panel of WF1973 Figure 3 2 Rear Panel of WF1973 GPIB connector Exhaust vent p 5 Power supply input p 6 Multi I O connector Used for sweep sequence control sync code output p 16 Frequency reference...

Страница 20: ...nel to be set on the LCD panel p 38 UNDO key Press to undo setting changes p 35 CANCEL key Press to cancel p 35 ENTER key Press to enter a setting p 35 Arrow keys Press to select items or increase dec...

Страница 21: ...H2 external trigger input terminal p 14 GPIB connector Multi I O connector Used for sweep sequence control sync code output p 16 Frequency reference output terminal p 16 External 10 MHz frequency refe...

Страница 22: ...the equipment CAUTION Do not apply a voltage exceeding the maximum input level to the input terminal as this may damage the equipment CAUTION If there is a difference in potential between the ground o...

Страница 23: ...n TTL level logic signal synchronized with internal modulation signal Sweep oscillation mode p 92 Reference phase sync signal Sweep X drive signal 0 V to 3 V open TTL level logic signal synchronized w...

Страница 24: ...cations 3 2 4 External trigger input TRIG IN TRIG IN may be used as external trigger input in the following cases The polarity setting can be changed Single shot sweep start trigger p 90 Gated single...

Страница 25: ...ple WF1973 WF1974 units Connect the frequency reference output of the master unit when multiple units are combined in synchronous connection or the master WF1973 or WF1974 to the external 10 MHz frequ...

Страница 26: ...used for sweep control and sequence control It outputs the step synchronization code for the sequence Input frequency 10 MHz 0 5 50 kHz Input waveform Sine or square 50 5 duty Signal GND Insulated fr...

Страница 27: ...eep through fall input during sweep execution The sweep is resumed from where it was held through rise input during hold Start or state branch Start control and state branch control can be selected Du...

Страница 28: ...ot used Step sync code D2 Yellow Black 4 Output Not used Step sync code D3 MSB Yellow Red 5 Output Not used Not used Bright green Black 6 GND Bright green Red 7 GND Gray Black 8 GND Gray Red 9 Reserve...

Страница 29: ...lower to prevent electric shocks The other signal grounds are all connected to the housing The housing itself is connected to a protective grounding terminal WARNING To prevent electric shocks do not...

Страница 30: ...ground Housing ground Use with potential difference of 42 Vpk or less Use with potential difference of 42 Vpk or less Use with potential difference of 42 Vpk or less 10 MHz REF IN EXT REF CKT CH1 ANAL...

Страница 31: ...edure Once the power is switched on a self check test is automatically executed and the unit becomes operable Power off procedure Power off state standby state The power is switched on The startup scr...

Страница 32: ...ply is connected The most general case is illustrated below While the equipment power is off even if the power supply is cut off due to the disconnection of the cord or the shutoff of a connected brea...

Страница 33: ...973 WF1974 The settings before the equipment was powered off last are restored The output on off settings at power on can be set on the Utility screen p 41 Check The previous settings can be restored...

Страница 34: ...Settings BBB LINE Power on state Power supply reconnected Settings MMM LINE The power is switched on The settings are set to the contents of setting memory 1 Power supply disconnected LINE Power supp...

Страница 35: ...so notify NF Corporation or an NF distributor Remote status Displayed when the equipment is controlled via the USB or GPIB interface External frequency reference status Displays whether a valid signal...

Страница 36: ...e icon indicates that the second page is currently displayed Soft key display area Displays the functions of the soft keys allocated according to the status If five or more soft keys are allocated n m...

Страница 37: ...g the image of the output waveform a Display format types There are three types of display formats as follows Text display Text WF1973 or Single WF1974 Displays the settings of 1 channel in text form...

Страница 38: ...th the arrow keys or the modify knob 3 The Graph tab screen display is switched to by pressing the ENTER key The settings can be done while checking the image of the output waveform on this screen The...

Страница 39: ...ayed at the top left of each setting screen Settings and operations such as those described below can be done with the various menu items Oscillator Almost all settings other than arbitrary waveform e...

Страница 40: ...is state a value can also be input by using the numeric keypad 3 Press the left right arrow keys to move the cursor to the digit of the value to be changed In the example on the left the cursor is mov...

Страница 41: ...alue and reflect it to the output The input field closes If the ENTER key is pressed the setting is performed in a unit without the k or m prefix The input field has closed ENTER If the CANCEL key is...

Страница 42: ...32 4 BASIC OPERATION MULTIFUNCTION GENERATOR Check If a setting item is displayed on a soft key the input field for that item can be opened by pressing that soft key...

Страница 43: ...he modify knob In this state the desired item can also be selected by inputting a number from the numeric keypad 4 Press the ENTER key to set the selected item and reflect it to the output The list of...

Страница 44: ...fset can be immediately opened with the corresponding basic parameter shortcut key Waveform p 44 Frequency p 44 Amplitude p 48 DC offset p 50 MENU OFFSET FCTN FREQ AMPTD The waveform choice list opens...

Страница 45: ...cannot be returned to this can be done with the UNDO key described next Close an input field or choice list Discard a value input from the numeric keypad Return a changed value to the original value...

Страница 46: ...n the input field 2 Press the Prefix soft key and the cursor will move to before Hz The right arrow key can also be used to move the cursor to before Hz 3 Change the unit to MHz kHz Hz mHz or uHz with...

Страница 47: ...hanged to Vrms dBV or a user defined unit with the up down arrow keys or the modify knob in the case of sine wave load impedance High Z Even when the display unit is changed the output value remains u...

Страница 48: ...independent The channel that is to be set is called the active channel in this product In the burst oscillation mode etc the MAN TRIG key works for the active channel Even if the screen is changed to...

Страница 49: ...t is available 5 USING EXTERNAL FREQUENCY REFERENCE in the Application Instruction Manual Power on output setting Power On Output Sets the output on off setting at power on p 41 Phase synchronization...

Страница 50: ...firmware version and latest calibration date 8 6 Product Information Display Information in the Application Instruction Manual Channel mode setting Channel Mode WF1974 only Sets the type of 2 channel...

Страница 51: ...hod on panel Each time the waveform output on off key is pressed the waveform output is switched on off When the output is on the lamp located to the left of the key lights When the output is off the...

Страница 52: ...screen 2 On the Utility screen select the Power On Output field and then press the ENTER key 3 The power on output setting window is displayed so select the desired item and then press the ENTER key T...

Страница 53: ...ode 1 Select the Mode field and then press the ENTER key to display the oscillation mode choice list Even if there are several setting screens the Mode field is displayed at the top left of each page...

Страница 54: ...4 4 Setting the frequency 1 Press the FREQ shortcut key to display the frequency input field or select the Freq field and then press the ENTER key to open the input field Even if there are several se...

Страница 55: ...lay are toggled each time the FREQ key is pressed Once the period input field is opened the setting procedure is the same as for the frequency When a value is input with the numeric keypad the unit ke...

Страница 56: ...position is 90 ahead of the rise of the reference phase sync output The oscillation start stop phase for burst oscillation gated single shot sweep can be changed The following example is burst oscilla...

Страница 57: ...ween channels If CH2 phase setting CH1 phase setting is positive the waveform of CH2 is ahead of the waveform of CH1 as shown in the following figure For details on sync oscillation and 2 phase oscill...

Страница 58: ...d is open press the Unit soft key and move the cursor to the unit position on the right end 2 The unit can be changed with the up down arrow keys or the modify knob Units that cannot be used are not d...

Страница 59: ...r AC amplitude DC offset is limited to 10 V open For example if the AC amplitude is 5 Vp p open the DC offset range is limited to the range from 7 5 V open to 7 5 V open The maximum value varies accor...

Страница 60: ...to be changed with the left right arrow keys and increment decrement the value with the up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a nume...

Страница 61: ...opened press the AMPTD shortcut key twice to open the high level input field If the high level input field is open the amplitude DC offset display and high low display are toggled each time the AMPTD...

Страница 62: ...ayed in the choice list from the numeric keypad to set these values and reflect them to the output b What are the polarity and amplitude range The polarity can be inverted and the amplitude range can...

Страница 63: ...eak on the positive side using the DC offset position as reference The amplitude is changed using the bottom of the waveform as reference Normally in the case of a unipolar waveform it is convenient t...

Страница 64: ...nge is selected when Auto is selected from the choice list and when Hold is selected the range is fixed to the range at that time The respective range icons are displayed as Auto and Hold Select the d...

Страница 65: ...NTER key again The load impedance condition choice list opens Select the desired load impedance and then press the ENTER key When Variable is selected the load impedance value can be set 3 Once the lo...

Страница 66: ...PERATION MULTIFUNCTION GENERATOR Check The output impedance is constant at 50 The output impedance error and output voltage error are not corrected The output voltage accuracy specification is the loa...

Страница 67: ...ition setting is done on the Utility screen 1 Press the MENU key to open the top menu window There select Utility and then press the ENTER key to display the Utility screen 2 On the Utility screen sel...

Страница 68: ...addition is used external modulation cannot be used except FSK PSK When the external addition gain cannot be set to the desired value The external addition gain is determined by the output voltage ra...

Страница 69: ...it key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is set to b Variable duty range switching method Normally use Off normal range 1 Select the Extend...

Страница 70: ...tting range At 15 MHz the duty is fixed to 50 Extended Setting range 0 0000 to 100 0000 independent of the frequency Jitter of 2 5 ns rms or less typ duty can always be changed from 0 to 100 If the hi...

Страница 71: ...f the ENTER key is used the unit is set to s b Pulse width duty setting method 1 Select the Duty field and then press the ENTER key to open the pulse width duty input field Even if there are several s...

Страница 72: ...ess the ENTER key to open the leading edge time input field To set the trailing edge time select the TE field and then press the ENTER key to open the trailing edge time input field Even if there are...

Страница 73: ...cy or cycle are limited as follows For example the leading edge time and trailing edge time at 1 kHz are limited to 100 ns or more Pulse width leading edge time and trailing edge time limitations The...

Страница 74: ...keypad Then press the ENTER key or the unit key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is set to b Relationship between symmetry and waveform O...

Страница 75: ...ft part of the parameter variable waveform selection screen Due to the large number of parameter variable waveforms they are categorized into a number of different groups First select the desired grou...

Страница 76: ...ation Instruction Manual 3 To apply the changes and quit the selection screen press the OK soft key To discard the changes and quit the selection screen press the Cancel soft key The changes can also...

Страница 77: ...editing memory and the waveforms No 1 to No 128 saved in non volatile memory The outline of the selected waveform can be checked with the graph display The Type field shows the arbitrary waveform dat...

Страница 78: ...n press the OK soft key To discard the changes and quit the selection screen press the Cancel soft key The changes can also be discarded and the selection screen exited by pressing a basic parameter s...

Страница 79: ...p 75 FSK Frequency Shift Keying This is binary frequency shift modulation p 76 PM Phase Modulation p 77 PSK Phase Shift Keying This is binary phase shift modulation p 78 AM Amplitude Modulation p 79...

Страница 80: ...XT key b 1st page of setting screen Screen for setting the carrier signal This is the modulation carrier signal setting screen which is common to all the oscillation modes c 2nd page of setting screen...

Страница 81: ...l modulation source waveform Sine square triangular rising ramp falling ramp noise and arbitrary can be chosen from p 72 Internal modulation frequency ModFreq This is the frequency of the internal mod...

Страница 82: ...80 DC offset modulation OFSM p 81 PWM PWM p 82 c To set the carrier condition Set the various parameters of the carrier signal on the 1st page of the setting screen d To set the modulation width The m...

Страница 83: ...ccording to the modulation type When the modulation type is FM PM AM AM SC OSFM or PWM Input the modulation signal to the external modulation addition input terminal The modulation width setting is th...

Страница 84: ...rence phase of the waveform is output from the sync sub output terminal When ModSync is selected A TTL level signal synchronized with the internal modulation waveform is output from the sync sub outpu...

Страница 85: ...M is not possible for noise pulse wave and DC d Setting items required for FM Set Freq carrier frequency on the 1st page of the setting screen Set Deviation peak frequency deviation on the 2nd page of...

Страница 86: ...g items required for FSK Set Freq carrier frequency on the 1st page of the setting screen Set HopFreq hop frequency on the 2nd page of the setting screen The output frequency alternates between the ca...

Страница 87: ...lation type on the 2nd page of the setting screen to PM PM c Waveforms for which FM is not possible PM is not possible for noise and DC d Setting items required for PM Set Deviation peak phase deviati...

Страница 88: ...f the setting screen The phase deviation zero state and the specified phase deviation state alternate for the output Note that the phase does not vary in the phase deviation range If Source modulation...

Страница 89: ...ge of the setting screen The output amplitude varies in the range of carrier amplitude setting value Vp p 2 1 modulation depth 100 When the modulation depth is 0 or the modulation is stopped the outpu...

Страница 90: ...aveforms for which AM DSB SC is not possible AM DSB SC is not possible for DC d Setting items required for AM DSB SC Set Amptd carrier amplitude on the 1st page of the setting screen Set Depth modulat...

Страница 91: ...le None DC offset modulation is possible for all waveforms d Setting items required for DC offset modulation Set Offset carrier DC offset on the 1st page of the setting screen Set Deviation peak DC of...

Страница 92: ...M is not possible for other waveforms d Setting items required for PWM Set Duty carrier duty on the 1st page of the setting screen Set Deviation peak duty deviation on the 2nd page of the setting scre...

Страница 93: ...ess the MENU key to display the top menu then select Oscillator and press the ENTER key a Setting the oscillation mode to sweep Set Mode oscillation mode to Sweep on the Oscillator setting screen The...

Страница 94: ...llation mode Continuous sweep single shot sweep and gated single shot sweep can be chosen from p 87 Trigger Trig This is the trigger condition for single shot sweep and gated single shot sweep Interna...

Страница 95: ...rol with the multi I O connector p 94 Oscillation stop unit for gated single shot sweep OscStop This is the oscillation stop unit for gated single shot sweep The unit can be selected from 1 cycle and...

Страница 96: ...weep type d To set the sweep range with center and span When the start value or stop value input field is open on the 2nd page of the setting screen and the current value is displayed the Center or Sp...

Страница 97: ...ne from the start value to the stop value If start value stop value the value increases during sweep execution Reversely if start value stop value the value decreases during sweep execution When the S...

Страница 98: ...g procedure p 90 The transition time from the start value to the stop value is set with Time sweep time on the 2nd page In the case of single shot sweep one sweep is executed upon reception of a trigg...

Страница 99: ...level while the oscillation is stopped separately from the phase set StpLvl stop level on the 3rd page of the setting screen to On on and set the level with a value using the amplitude full scale as r...

Страница 100: ...rnal the trigger polarity can be set If the trigger source is set to Ext external a TTL level trigger signal is input to the external trigger input terminal TRIG IN Sweeping can be started and stopped...

Страница 101: ...en changed to a suitable setting trigger reception becomes possible The Start soft key and the manual trigger key on the panel operate like manual trigger regardless of the trigger source setting m To...

Страница 102: ...utput terminal This signal changes from high to low at sweep start When the signal being swept is observed with an oscilloscope it can be used as the trigger signal for the oscilloscope When SwpSync M...

Страница 103: ...Stop value Shuttle Low from start value to marker value Low from start value to marker value Low from start value to marker value 0 V Sweep time 3 V Sweep time Sweep time Low from start value to stop...

Страница 104: ...nal For the pin number allocation p 18 The following manipulations can be done Sweep start If sweep operation is currently stopped the sweep operation starts from the beginning upon input of a falling...

Страница 105: ...f the setting screen The frequency settings on the 1st page of the setting screen are disabled Start frequency Start The frequency range depends on the waveform Stop frequency Stop The frequency range...

Страница 106: ...of setting screen p 89 This setting can be used only for gated single shot sweep External control with multi I O connector ExtCtrl 3rd page of setting screen p 94 Oscillation stop unit for gated singl...

Страница 107: ...the 2nd page of the setting screen to Phase phase c Waveforms for which phase sweep is not possible Phase sweep is not possible for noise and DC d Setting items required for phase sweep Set the follow...

Страница 108: ...ndition must be set p 90 Set the following items as needed Marker phase Marker 2nd page of setting screen p 92 Stop level StpLvl 3rd page of setting screen p 89 This setting can be used only for gated...

Страница 109: ...Set the following items on the 2nd page of the setting screen The amplitude settings on the 1st page of the setting screen are disabled Start amplitude Start Stop amplitude Stop Sweep time Time This i...

Страница 110: ...ge of setting screen p 89 This setting can be used only for gated single shot sweep External control with multi I O connector ExtCtrl 3rd page of setting screen p 94 Oscillation stop unit for gated si...

Страница 111: ...s the waveform gated single shot sweep cannot be done d Setting items required for DC offset sweep Set the following items on the 2nd page of the setting screen The DC offset settings on the 1st page...

Страница 112: ...ge of setting screen p 89 This setting can be used only for gated single shot sweep External control with multi I O connector ExtCtrl 3rd page of setting screen p 94 Oscillation stop unit for gated si...

Страница 113: ...n the 1st page of the setting screen are disabled Start duty Start The duty range depends on the frequency In the case of a pulse wave it also depends on the leading edge time and the trailing edge ti...

Страница 114: ...etting screen p 92 Stop level StpLvl 3rd page of setting screen p 89 This setting can be used only for gated single shot sweep External control with multi I O connector ExtCtrl 3rd page of setting scr...

Страница 115: ...atically repeated with the respectively specified wave number No trigger signal is required p 106 Trigger burst Oscillation with the specified wave number is done each time a trigger is received p 109...

Страница 116: ...ber 3 space wave number oscillation stop wave number 2 oscillation start stop phase 30 stop level off b Setting the oscillation mode to auto burst Set Mode oscillation mode to Burst on the Oscillator...

Страница 117: ...108 Sync output SyncOut This is the output signal from the sync sub output terminal Waveform reference phase synchronization and burst synchronization can be chosen from p 108 d Waveforms for which a...

Страница 118: ...t burst sync signal with SyncOut sync output on the 2nd page of the setting screen One of the following two settings can be selected Signal synchronized with the reference phase of the waveform Sync S...

Страница 119: ...illation start stop phase 30 stop level off b Setting the oscillation mode to trigger burst Set Mode oscillation mode to Burst on the Oscillator setting screen The oscilla tion mode is switched to the...

Страница 120: ...igDly This is the trigger delay time Upon receipt of a trigger oscillation starts following the lapse of the specified time p 111 Sync out SyncOut This is the output signal from the sync sub output te...

Страница 121: ...s active p 38 To use only manual trigger manipulation and remote trigger manipulation as the trigger set the trigger source to Ext external Also to prevent malfunction due to external noise at this ti...

Страница 122: ...roportion of the amplitude full scale Set StpLvl stop level on the 2nd page of the setting screen to On on and set the level with a value The following examples are for mark wave number 3 oscillation...

Страница 123: ...level off After the gate signal becomes off oscillation stops once the oscillation start stop phase is reached b Setting the oscillation mode to gate oscillation Set Mode oscillation mode to Burst bur...

Страница 124: ...This is the output signal from the sync sub output terminal Waveform reference phase synchronization and burst synchronization can be chosen from p 115 d Waveforms for which auto burst is not possible...

Страница 125: ...are always valid regardless of the trigger source setting The MAN TRIG key can be used for manual trigger manipulation The gate signal is on while the MAN TRIG key is pressed However in the case of th...

Страница 126: ...he oscillation stop unit under the following conditions oscillation start stop phase 30 stop level off In the case of 1 cycle units following gate off oscillation stops once the oscillation start stop...

Страница 127: ...tion period and the gate off period is the oscillation stop period Further since noise has no phase the stop level setting is always enabled The next figure is an example of noise gate oscillation whe...

Страница 128: ...el off After the gate signal becomes off oscillation stops once the oscillation start stop phase is reached b Setting the oscillation mode to triggered gate oscillation Set Mode oscillation mode to Bu...

Страница 129: ...SyncOut This is the output signal from the sync sub output terminal Waveform reference phase synchronization and burst synchronization can be chosen from p 120 d Waveforms for which triggered gate osc...

Страница 130: ...display is active For details on the channel whose display is active p 38 To use only manual trigger manipulation and remote trigger manipulation as the trigger set the trigger source to Ext external...

Страница 131: ...illation is stopped is normally set with the oscillation start stop phase but it can also be set independently from that with a proportion of the amplitude full scale Set StpLvl stop level on the 2nd...

Страница 132: ...An outline of the setting saved to the setting memory of the specified number is displayed in the right part of the screen 4 Select the number of the setting memory to which the setting is to be saved...

Страница 133: ...elete the character at the cursor position The character string to the right of the cursor moves one place left Press the Insert soft key to insert a space at the cursor position Press the CLR soft ke...

Страница 134: ...e left part of the screen An outline of the setting saved to the setting memory of the specified number is displayed in the right part of the screen 4 Select the number of the setting memory to be rec...

Страница 135: ...to the saving operation after setting the setting memory number press the Rename soft key to open the setting memory name input field 2 The name input method is the same as in the case of the Store Me...

Страница 136: ...ation mode Continuous oscillation Waveform Sine Polarity and amplitude range Normal FS Frequency 1 kHz Amplitude 0 1 Vp p DC offset 0 V Range Auto Load impedance Open Phase 0 Output Off Sync sub outpu...

Страница 137: ...ol input Disabled Oscillation stop unit during gated single shot 1 cycle Sync sub output Sweep synchronization marker on Burst Burst mode Trigger burst Mark wave number 1 cycle Space wave number 1 cyc...

Страница 138: ...on dark color Modify direction Downward through clockwise rotation Operation sound On Remote settings Interface USB GPIB address 2 The following settings are initialized every time the power is switc...

Страница 139: ...Waveforms 7 2 1 Standard waveforms Types Sine square pulse ramp parameter variable waveform noise Gaussian distribution DC Polarity Normal inverted selectable excluding DC Amplitude range FS 0 FS 0 F...

Страница 140: ...dition 1 kHz sine amplitude setting of 20 mVp p open or higher Setting units Vp p Vpk Vrms dBV dBm Range Auto hold selectable Maximum output voltage range 20 Vp p 4 Vp p Amplitude attenuator range 0 d...

Страница 141: ...tion sync burst sync sweep sync sequence step sync internal modulation signal sweep X drive selectable Reference phase sync output Square waveform with 50 duty that rises at zero waveform phase positi...

Страница 142: ...In the case of a pulse width of 8 4 ns or less loss may occur on average it is equal to the set duty Setting range Normal range 0 0100 to 99 9900 0 0001 resolution Upper limit 100 frequency Hz 300 00...

Страница 143: ...ariable Parameters Unbalanced sine Waveform for which the amplitudes of the first half cycle and second half cycle of a sine wave can be changed independently First half amplitude 100 00 to 100 00 Sec...

Страница 144: ...ering 0 to 3 On state time 0 00 to 20 00 of basic period Off state time 0 00 to 20 00 of basic period Waveform Name Waveform Example Description and Variable Parameters Gaussian pulse Gaussian distrib...

Страница 145: ...Oscillation surge Surge waveform with damped oscillation Oscillation frequency 0 01 to 50 00 times basic frequency Damping time constant 0 01 to 100 00 of basic period Trailing time constant 0 01 to 1...

Страница 146: ...sync sub output connector Internal modulation signal output Output voltage 3 V to 3 V open Output connector Shared with sync sub output connector External modulation input other than FSK PSK Input vo...

Страница 147: ...and DC and arbitrary waveform Deviation setting range 1800 00 to 1800 000 0 001 resolution Remark The sine wave amplitude frequency characteristics during PSK are limited to 25 MHz 3 dB AM non DSB SC...

Страница 148: ...ger oscillator for sweep used for single shot sweep and gated single shot sweep Period setting range 100 0 s to 10 000 s 5 digits or 0 1 s resolution Stop level setting used for gated single shot swee...

Страница 149: ...waveform and arbitrary waveform Start stop DC offset setting range 10 V to 10 V open Duty sweep Waveform Square wave pulse wave Start stop duty setting range Square wave Normal variable duty range 0...

Страница 150: ...0 00 s to 100 00 s 5 digits or 0 01 s resolution Latent delay of 0 55 s Only valid for trigger burst not valid for gate triggered gate Valid for both internal and external trigger sources Not valid fo...

Страница 151: ...i I O connector at step end Upon branch input detection branching to specified destination step Event branch Immediate branching to specified destination step through event branch manipulation or inpu...

Страница 152: ...BNC receptacle External addition input Addition gain 2 10 off selectable During 2 the maximum output voltage range is fixed to 4 Vp p and during 10 20 Vp p Off during sequence oscillation Input volta...

Страница 153: ...ess typ Condition Same waveform sine or square Channel Mode Operation Independent Independent setting 2 phase Holds same frequency During frequency sweep internal frequency modulation and internal FSK...

Страница 154: ...me phase same wave form sine or square length of connection cable between frequency reference output and external frequency reference input 1 m RG 58A U 7 14 User Defined Units Function Setting and di...

Страница 155: ...ousing Each of the signal grounds of CH1 CH2 and 10MHz REF IN are independent The withstand voltage between insulated signal grounds and between housings is 42 Vpk max DC AC peak The other signal grou...

Страница 156: ...n degree 2 External dimensions 216 W 88 H 332 D mm excluding projections Weight Approx 2 1 kg excluding accessories weight of main unit only Safety and EMC Applied only to models with the CE marking d...

Страница 157: ...3 WF1974 External dimensions WF1973 Surface treatment Front panel Plastic ultra light gray Munsell 6PB9 2 0 1 Rear panel Munsell 8 5PB2 6 0 2 Covers Light gray leather tone Munsell 6PB7 6 1 2 leather...

Страница 158: ...NERATOR External dimensions WF1974 Surface treatment Front panel Plastic ultra light gray Munsell 6PB9 2 0 1 Rear panel Munsell 8 5PB2 6 0 2 Covers Light gray leather tone Munsell 6PB7 6 1 2 leather t...

Страница 159: ...r 1 unit RACK MOUNTING DIMENSIONS Surface treatment Rack mount adapter Painted in ultra light gray Munsell 6PB9 2 0 1 Caution To mount the unit in the rack do not hold it only with the rack mount adap...

Страница 160: ...1 Caution To mount the unit in the rack do not hold it only with the rack mount adapters Be sure to use L brackets or shelves in the rack to hold the main unit When mounting the unit with shelves the...

Страница 161: ...g dimensions for 1 unit Surface treatment Rack mount adapter Painted in ultra light gray Munsell 6PB9 2 0 1 Caution To mount the unit in the rack do not hold it only with the rack mount adapters Be su...

Страница 162: ...2 0 1 Caution To mount the unit in the rack do not hold it only with the rack mount adapters Be sure to use L brackets or shelves in the rack to hold the main unit When mounting the unit with shelves...

Страница 163: ...5 CH1 CH2 key 38 Conflict 73 91 108 D dBm 48 dBV 48 DC offset setting 50 display format switching 28 E ENTER key 35 external dimensions WF1973 147 external dimensions WF1974 148 external frequency ref...

Страница 164: ...t modulation 73 stop modulation 73 type 72 MULTI I O 16 N NEXT key 26 normal waveform polarity 52 numeric input 31 numeric keypad 31 O OFFSET key 50 operating principles 2 options 5 oscillation mode s...

Страница 165: ...g sweep execution 89 pause sweep 91 phase sweep setting 97 rising falling direction 87 sawtooth wave sweep 86 screen for sweep setting and manipulation 83 shuttle sweep 87 single shot sweep 88 start s...

Страница 166: ...ncalibrated 25 UNDO key 35 unit changing 36 unit of amplitude changing 48 user defined unit 37 Utility screen function 39 V Vpk 48 53 Vp p 48 53 Vrms 48 W warranty 157 waste disposal IV waveform ampli...

Страница 167: ...ive product without any charge for the parts and labor or either repair or replace products which prove to be defective For repair service under warranty the product must be returned to a service cent...

Страница 168: ...ny damage regarding the contents of this manual We assume no responsibility for influences resulting from the operations in this manual WF1973 WF1974 Instruction Manual Basics NF CORPORATION 3 20 Tsun...

Страница 169: ...http www nfcorp co jp 6 3 20 Tsunashima higashi Kohoku ku Yokohama 223 8508 JAPAN NF Corporation...

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