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Matsusada Precision DOKF Series Instruction Manual

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Instruction Manual
DOKF series
MODEL
*243.9.028*
B/N 243.9.028
Rev. 0.9

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Summary of Contents for Matsusada Precision DOKF Series

  • Page 1 Instruction Manual DOKF series MODEL *243.9.028* B/N 243.9.028 Rev. 0.9...
  • Page 2 ◆ No patent liability is assumed with respect to the use of the information contained herein. Moreover, because Matsusada Precision is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without notice.

  • Page 4: For Safe Use Of The Product

    Bistable push button switch for preventing electric shock) Indicates the possible danger of death if Bistable push button switch you drink it and burns or blindness if it attaches. Indicates the possible danger of exposure Alternative Current to radiation. DOKF series Matsusada Precision...
  • Page 5 It may result in electric shock or fire. ◆ Regarding the input voltage Check the page describing the input terminals and input voltage in the instruction manual. Do not provide any voltage out of the specifications. DOKF series Matsusada Precision...
  • Page 6 In order to avoid electric shock, ground the terminals to discharge using a short-circuit grounding apparatus and check the voltage again. The terminals here mean all terminals like input and output terminals and terminals for communications and remote controls. DOKF series Matsusada Precision...
  • Page 7 It requires to be replaced at regular intervals to extend the lifetime. For the replacement, contact us. (It requires a replacement charge separately. Do not replace it by yourself, as there is a risk of electric shock.) DOKF series Matsusada Precision...

  • Page 8: Table Of Contents

    Analog Remote Function ........................55 Pin Assignment and Signals ......................55 Functional Description ........................56 LS (Remote Switch) Function ......................57 LD (Interlock) Function ........................59 Output State ............................ 60 Fault State ............................60 Analog Remote ..........................61 DOKF series Matsusada Precision...

  • Page 9: Table Of Contents

    Setting Synchronous Trigger ......................102 Applications for Synchronous Trigger....................103 Synchronous Clock ..........................104 Connecting Synchronous clock ....................... 104 Setting Synchronous Clock ......................105 Locking the Clock ..........................107 Input and Output Signals of Synchronous Clock ................108 DOKF series Matsusada Precision...

  • Page 10: Introduction

    This product applies to “High-frequency use equipment”. (This information is for Japan only.) DOKF series applies to "high-frequency use equipment" that requires a license for use from the Minister of Internal Affairs and Communications in accordance with the provisions of Article 100 of the Radio Law.

  • Page 11: Precautions For Use

    If the output voltage does not meet the present value, 1. Make sure that the input voltage is within the specification. Input voltage 100Vac (or 200%), AC±10%, 50/60Hz single phase ・ 2. Confirm that the connections are all correct. DOKF series Matsusada Precision...

  • Page 12: Characteristics Of Bipolar Power Supplies

    Also, even if the sine wave output resonates, the output may simply appear to be decreasing. If there is any abnormality, connect a C-R series circuit after checking the output waveform with square wave output. Current Current Time Time Normal square wave output Resonating square wave output DOKF series Matsusada Precision...
  • Page 13 Step time: The responsiveness can be indicated by a rise time (as shown in Fig.2). The rise time of a bipolar amplifier at a response speed of (= frequency bandwidth) fc [Hz] is generally acquired by “tr = approx. 0.35/fc” The fall time tf equals to tr. ExtSignal 100% Output Fig. Rise time DOKF series Matsusada Precision...

  • Page 14: External Appearance

    14 CV/CC switch 3 OUTPUT switch 9 Up switch 15 PROT (protect) switch 4 OUTPUT LED 10 Right/LOCK switch 16 SQC (sequence program) switch 5 Rotary encoder 11 DC/ACDC switch 6 CANCEL switch 12 Down switch DOKF series Matsusada Precision...
  • Page 15 26 Sync CLK output terminal (Sync operation) Sensing terminal 27 RS-232C connector Voltage monitor terminal 28 USB connector Current monitor terminal 29 GPIB connector External remote connector 30 Sync trigger connector (Sync operation) Master/Slave connector (Option) 31 Analog remote connector DOKF series Matsusada Precision...

  • Page 16: Dimensions

    2 External Appearance Dimensions DOKF series Matsusada Precision...

  • Page 17: Operation

    Please refer to the following table to determine the thickness of the wire. Max current [A] Max current [A] Connecting the AC Input Cable Connect the AC input cable to power outlet. Input voltage 100Vac (or 200Vac), 50/60Hz single phase DOKF series Matsusada Precision...

  • Page 18: Remote Sensing (Available In Cv Mode, Dc Output)

    ・ Remote sensing is unavailable for AC output such as sine wave or square wave. ・ Because of the state of the load, output line, or sense line, the output may oscillate and the remote sensing cannot be used. DOKF series Matsusada Precision...

  • Page 19: Protections

    The current limit protection is for the steady-state current and its response rate is approx. one millisecond (the same as the voltage limit protection). Apart from this, to protect the amplifier elements, a fast-response circuit is equipped to limit the pulse current during square waves and capacitive loads. DOKF series Matsusada Precision...

  • Page 20: Sink Power Protection

    Avoid continuous use at a high frequency that would reduce the output amplitude of this unit. It may increase the internal loss of the unit and lead to failure. For your safety, be sure to ground the GROUND terminal. DOKF series Matsusada Precision...

  • Page 21: Other Functions

    This product has a feature of digital control via external communication system of USB/RS-232C and GPIB communications. For details, refer to DOKF Instruction Manual Communication Interface and USB Driver Installation Guide in addition to this instruction manual [3-14 Communication Setting] DOKF series Matsusada Precision...

  • Page 22: Basic Operation

    It will take approx. 20 seconds. Do not set the POWER switch to OFF during it. Otherwise, the memory is not correctly initialized. Such abnormality may occur by the POWER switch being turned off during memory write or by external noise. If the phenomenon occurred, please contact us. DOKF series Matsusada Precision...

  • Page 23: Output On/Off

    When the LS function is not used, disable it. NOTE: [If FAULT is displayed after the output was turned ON] A protection is activated and the unit is in a fault state. Check the settings of the protection and the load. DOKF series Matsusada Precision...

  • Page 24: Screen Description

    +10.000V +10.003 V 20.0V Freq 1.00kHz Vrms 14.138 V Wave SINE [Settings] [Measurement] Sphs 0.0deg Setting Irms 14.146 A Measurement data values ZeroPhs +9.997 A MSR SET MORE．．． Matsusada Main Set1 [Selected screen] Fig. Screen layout DOKF series Matsusada Precision...
  • Page 25 Voltage/Current, Frequency, Waveform, and Measurement settings are displayed. Resp: Fast Sense: OFF +10.000V +10.003 V 20.0V Freq 1.00kHz Vrms 14.138 V Wave SINE Sphs 0.0deg Irms 14.146 A ZeroPhs +9.997 A MSR SET MORE．．． Matsusada Main Set1 DOKF series Matsusada Precision...
  • Page 26 Settings of the soft start/stop are displayed. Resp: MID1 Sense: OFF Soft Start: ON Time: 0000s 001.0ms DCV: Ramp StartV: +10.000V EndV: -10.000V ACV: Const StartV: 20.0V EndV: FRQ: Sweep StartF: 10.00kHz EndF: 1.00kHz Soft Start DOKF series Matsusada Precision...
  • Page 27 5) Protect Settings of the protections are displayed. Resp: MID1 Sense: OFF PROT CutOff +10.003 V Vlim+ +22.0V Vlim- -22.0V Vrms 14.138 V Ilim+ +22.0A Ilim- -22.0A Irms 14.146 A 22.0V +9.997 A 22.0A -200W Protect Matsusada DOKF series Matsusada Precision...

  • Page 28: Switches Description

    CV/CC switch PROT PROT switch SQC switch DC/AC DC/ACDC switch ▼ Down switch (in setting) ◄/MEM Left switch (in setting)/ Memory switch SET/SAVE SET/SAVE switch ▲ Up switch (in setting) ►/LOCK Right switch (in setting)/ LOCK switch DOKF series Matsusada Precision...

  • Page 29: Enabling Setting Change

    V l i m - C u t O f f P R O T + 2 2 . 0 V V l i m + - 2 2 . 0 A V l i m - PROT switch DOKF series Matsusada Precision...

  • Page 30: Saving And Canceling Settings

    To cancel any changes, press the CANCEL switch when the Main Set1 screen is displayed. After the previous settings were restored, the changeable screen will return to the normal screen. SET/SAVE switch: Saves any changes. CANCEL switch: Cancels any changes when the Main Set1 screen is displayed. DOKF series Matsusada Precision...
  • Page 31 After the setting data is saved, the screen will return to the previous one. Cancel ・ Protection settings cannot be canceled. Make sure to press the PROT switch to save the settings. PROT switch: Saves settings. DOKF series Matsusada Precision...

  • Page 32: Moving Between Setting Items And Digits

    + 2 0 . 0 0 0 V A C V . 0 V F r e q 1 . 0 0 k H z ▲ “▼” (Down) switch: “ ” (Up) switch: Moves downward. Moves upward. DOKF series Matsusada Precision...
  • Page 33 2 0 . 0 V F r e q 1 . 0 0 k H z ◄ ► “ ” (Left) switch: “ ” (Right) switch: Moves to the left digit. Moves to the right digit. DOKF series Matsusada Precision...

  • Page 34: Mode Settings

    This shows the voltage setting: DCV and ACV The unit is [V]. Fig. CV mode This shows the current mode: CC This shows the current setting: DCI and ACI The unit is [A]. Fig. CC mode DOKF series Matsusada Precision...
  • Page 35 This shows the current mode.: AC and DC AC+DC mode: The AC setting items appear for setting available. Fig. AC+DC mode This shows the current mode: DC DC mode: No AC setting items appear and are unavailable for setting. Fig. DC mode DOKF series Matsusada Precision...
  • Page 36 CC mode. The item is DC voltage, DCV. The unit is [V]. Fig. DC voltage setting in CV mode The item is DC current, DCI. The unit is [A]. Fig. DC current setting in CC mode DOKF series Matsusada Precision...
  • Page 37 CC mode. The item is AC voltage, ACV. The unit is [V]. Fig. AC voltage setting in CV mode The item is AC current, ACI. The unit is [A]. Fig. AC current setting in CC mode DOKF series Matsusada Precision...
  • Page 38 Peak value = Setting value of ACV or ACI 0[V] or 0[A] NOTE: [No AC voltage (current) output] When the unit operates in the external signal amplifier mode, the internal AC waveform signal is not connected regardless of its settings. DOKF series Matsusada Precision...
  • Page 39 Moves to the right digit. The unit of the displayed frequency and the setting resolution vary at 1kHz or higher / lower than 1kHz +10.000V +10.000V 20.0V 20.0V Freq 101.00kHz Freq 99.99Hz Fig. 1kHz or higher Fig. Lower than 1kHz DOKF series Matsusada Precision...
  • Page 40 The setting of the starting phase is shown. ZeroPhs Fig. Screen of Sine wave selected Sets the waveform to the square wave. Wave SQUA The setting of the on-duty is shown. Duty 55.0% ZeroPhs Fig. Screen of Square wave selected DOKF series Matsusada Precision...
  • Page 41 The setting of the starting phase is shown. ZeroPhs Fig. Screen of Sine wave selected Sets the waveform to the square wave. Wave SQUA The setting of the on-duty is shown. Duty 55.0% ZeroPhs Fig. Screen of Square wave selected DOKF series Matsusada Precision...
  • Page 42 In order to set the zero-cross update, select the item in the Main Set1 and change the setting by turning the Rotary encoder. Rotary encoder: Changes the zero-cross update settings. Wave SINE SPhs 90.0deg Zero-cross update: ON/OFF ZeroPhs Fig. Zero-cross update DOKF series Matsusada Precision...
  • Page 43 DC voltage and current are measured with Vrms an Irms.  Use Vdc and Idc for DC voltage and current and Vrms and Irms for AC voltage and current of sine waves. DOKF series Matsusada Precision...
  • Page 44 In the above condition, press the ENTER switch. The item in the first position will be highlighted. ENTER switch With the first position selected, turning the Rotary encoder will change the measurement value along with the measurement item. Rotary encoder DOKF series Matsusada Precision...
  • Page 45 The screen will return to the ordinal display after the setting data was saved. When settings other than measurement are continued, press the CANCEL switch with a measurement item selected. This will bring you back to the “MSR SET” screen. CANCEL switch DOKF series Matsusada Precision...
  • Page 46 Select “MORE…” by pressing “▼” (Down) switch or “▲” (Up) switch. It will be highlighted when selected. +10.000V +10.003 V 20.0V Vrms 14.138 V Freq 1.00kHz Wave SINE Irms 14.146 A Sphs 0.0deg +9.997 A ZeroPhs MSR SET MORE．．． DOKF series Matsusada Precision...
  • Page 47 To save the settings, press the SET/SAVE switch. The screen will return to the ordinal display after the setting data was saved. When settings other than response are continued, press the CANCEL switch to go back to “MORE…”. DOKF series Matsusada Precision...
  • Page 48 The setting is shown in the present status at the top of the screen MID１ Response Fast Sense Ext Signal Soft Start Setting the remote sensing Fig. Remote sensing setting screen Setting the remote sensing (present status) DOKF series Matsusada Precision...
  • Page 49 Additionally, the protection itself may malfunction because the cutoff protection uses root-mean-square values. Use the limit protection as much as possible when the function is enabled. Response Fast Sense Ext Signal External signal setting: ON/ OFF Soft Start Fig. External signal setting DOKF series Matsusada Precision...
  • Page 50 The set start value is output for the set period of time. The set end value will be ignored.  Variation The output varies from the set start value to the set (Ramp, Sweep): end value for the set period of time. DOKF series Matsusada Precision...
  • Page 51 In the state, pressing the ENTER switch displays the soft start setting screen. Resp: MID1 Sense: OFF Response MID1 +10.003V Sense Ext Signal Vrms 14.138 V Soft Start Soft Stop Irms 14.146 A SYSTEM Enter switch +9.997 A Matsusada Main Set2 Fig. Screen of “Soft Start” selected DOKF series Matsusada Precision...
  • Page 52 ◄” (Left) switch to move between digits and change the figure by turning the Rotary “ encoder. Resp: MID1 Sense: OFF Soft Start: ON Time: 0000s 001.0ms DCV: Ramp StartV: +10.000V EndV: -10.000V ACV: Const StartV: 20.0V EndV: FRQ: Sweep StartF: 10.00kHz EndF: 1.00kHz Soft Start DOKF series Matsusada Precision...
  • Page 53 The setting parameters cannot be modified during the soft start or soft stop operation. Note that operation via communication or analog remote (LS, etc.) disables the soft start and soft stop functions and will not work regardless of the setting. DOKF series Matsusada Precision...
  • Page 54 +9.997 A Enter switch Main Set2 Matsusada Fig. “SYSTEM” selected Resp: MID1 Sense: OFF Save Time +10.003V Communi BaudRate 9600 Vrms 14.138 V Terminate Address Irms 14.146 A Command +9.997 A Matsusada SYSTEM Fig. Setting “SYSTEM” DOKF series Matsusada Precision...
  • Page 55 Rotary encoder. Save Time Automatic save time Communi BaudRate 9600 Fig. Setting of Automatic save time Setting range: 5 to 60 seconds Setting unit: 1 second DOKF series Matsusada Precision...

  • Page 56: Operation Of Protection Function

    Fault and Factor When cutoff protection of overvoltage or overcurrent protection is activated, the unit turns off its output and indicates protection activated. The state is called “Fault”. The current state is indicated by blinking on the position. DOKF series Matsusada Precision...

  • Page 57: Fault Release

    [If Overtemperature protection is activated] Turn off the unit and wait for 30 minutes or more before turning it on again. If the protection is activated repeatedly, it may be something wrong with the unit inside, please contact us. DOKF series Matsusada Precision...

  • Page 58: Setting Values For Protection

    Setting range: -0.1 to –rating x 110% [Setting of cutoff protection for overcurrent]  Setting range: 0.1 to rating x 110% Setting unit: 0.1A  [Setting of cutoff protection for sink power]  Setting range: -1 to -200W  Setting unit: 1W DOKF series Matsusada Precision...

  • Page 59: Protection Settings

    Changes setting values. “▼” (Down) switch: Turning clockwise increases value Moves to the below item. counterclockwise decreases value. ► “ ” (Right) switch: ◄ “ ” (Left) switch: Moves to the right. Moves to the left. DOKF series Matsusada Precision...
  • Page 60 Cutoff setting value for overcurrent Cutoff setting value for sink power (Cutoff) Fig. Setting items for protection After the settings, press the PROT switch again to save the changes and the screen will return to the normal one. PROT switch DOKF series Matsusada Precision...

  • Page 61: Keylock Function

    The state appears in the current status at the top of the screen Indicates Keylock ON Fig. Lock state display LOCK switch To release the lock, press and hold the LOCK switch again for five seconds. After that, the switches and Rotary encoder will be available. DOKF series Matsusada Precision...

  • Page 62: Memory Function

    Calling memory Press ENTER. determined No.: 1 to 99 Press MEM. [Saving memory] Resp: Fast Sense: OFF Lock Storing memory Press ENTER. store determined No.: 1 to 99 Press MEM. Without memory operation returns to previous screen DOKF series Matsusada Precision...
  • Page 63 Increases the memory number by turning it clockwise. Decreases the memory number by turning it counter-clockwise. ENTER switch: MEM switch: Executes memory call or memory store. Switches from the ordinary screen to “MEM Recall” and “MEM Store”. DOKF series Matsusada Precision...

  • Page 64: Analog Remote Function

    Setting signal of DC polarity Input COM level 10 DCAC_EN DCAC_SET enabled Input COM level 11 LS Remote switch Input COM level 12 NC Not connected 13 CVCC_SET Setting signal of CV/CC mode Input COM level DOKF series Matsusada Precision...

  • Page 65: Functional Description

    The analog remote function is available by inputting the signal. And control signals will be enabled by enabling the voltage, current, frequency, and CVCC mode switching. When a control signal is not enabled, the setting signal will be ignored. DOKF series Matsusada Precision...

  • Page 66: Ls (Remote Switch) Function

    And, set “EN” by turning the Rotary encoder. After the setting is complete, press the SET/SAVE switch to save the changing. Save Time Communi BaudRate 9600 Terminate Address Command The function will be activated when “EN” is set. SYSYTEM Fig. LS function setting DOKF series Matsusada Precision...
  • Page 67 (1) Set “LS” to “EN” (enabled) while the LS signal is open. (2) Set “LS” to “EN” (enabled) while the LS signal is closed. The OUTPUT LED will not blink and the output is in off state. In the state, open the LS signal. DOKF series Matsusada Precision...

  • Page 68: Ld (Interlock) Function

    Close the external relay for LD or set the TTL signal for it to low and then press the OUTPUT switch. If the LS signal is in use, short the LS signal, and then, open it again. DOKF series Matsusada Precision...

  • Page 69: Output State

    For details about Fault, refer to [3-9 Operation of Protection Function]. [Internal circuit and signal logic] The signal is output with an open collector. Power supply Internal circuit 10Ω OPEN: Normal 5mA or SHORT: Fault state lower DOKF series Matsusada Precision...

  • Page 70: Analog Remote

    Use a TTL signal or a relay contact for the external setting. Power supply External connection Internal circuit TTL Hi: Disabled TTL signal TTL Lo: Enabled (COM) 5kΩ 100Ω External relay OPEN: Disabled External relay External relay SHORT: Enabled (COM) DOKF series Matsusada Precision...
  • Page 71 Pin 10: DCAC_EN signal (enabling DCAC switching) Short: Enabled Open: Disabled  Pin 13: CVCC_SET signal (CV/CC setting) Short: CC mode Open: CV mode  Pin 25: DCAC_SET signal (DC/ACDC setting) Short: DC mode Open: ACDC mode DOKF series Matsusada Precision...
  • Page 72 Open: Disabled *When this signal is enabled, the text color for the voltage/current setting value in the screen will change from white to black.  Pin 9: DC_POLE signal (switching DC polarity) Short: Negative Open: Positive DOKF series Matsusada Precision...
  • Page 73 When analog signals are input, the text of the currently enabled setting values will be displayed in black. Set the values while checking the displayed values. And, analog signals linearly change as shown below. Output set value Analog signal DOKF series Matsusada Precision...

  • Page 74: Sequence (Output Program) Function

    Moreover, a large amount of data in CV mode and CC mode with 1,024 steps respectively as well as the number of programs and steps are possible to be stored, which has improved operability. DOKF series Matsusada Precision...

  • Page 75: General Specifications

    Sequence operation is fixed to ACDC mode (cannot be switched). The number of programs in CV mode and CC mode can be set respectively. However, note that when the setting of the number of programs is changed, the stored data will be initialized. DOKF series Matsusada Precision...

  • Page 76: Description Of Sequence Screen

    Prog No. Vrms 0.142 V [Measurement values] Step Irms 0.033 A 5.6 s Time Loop -10.015 A Prog Edit Sequence Matsusada [Present screen] [Sequence condition] Run, Stop, Pause, Present program number, Step number, Elapsed time, etc. DOKF series Matsusada Precision...
  • Page 77 Step No. : 34 Time: 0000s 001.0ms DCV : Ramp StartV: +10.000V [Step Edit 1setting] EndV: -10.000V Voltage/Current, Ramp, Sweep ACV : Const StartV: 20.0V EndV: FRQ : Sweep StartF: 10.00kHz EndF: 1.00kHz Matsusada Step Edit 1 [Present screen] DOKF series Matsusada Precision...
  • Page 78 Runs or stops sequence. Rotary encoder: Changes setting values. CANCEL: Discards edited settings. ENTER: Saves or checks program data. Direction switch: Changes items or digits for settings SQC switch: Shifts to sequence operation or switches to edit screens. DOKF series Matsusada Precision...

  • Page 79: Shift To Sequence Operation

    Also, to return to normal operation, the output is always turned off once the sequence operation runs. [Switching Normal operation to Sequence operation] Normal operation Changing setting Setting Output (2)Press SQC Soft start (1)Press SQC switch. switch. Soft stop Sequence operation SEQUENCE RUN SEQUENCE STOP SEQUENCE EDIT DOKF series Matsusada Precision...

  • Page 80: States Of Sequence Operation

    SQC Stop Vrms 0.142 V Step <Sequence Pause> Irms 0.033 A 5.6 s Time SQC Pause Loop -10.015 A Prog Edit Matsusada Sequence Fig. Sequence operation display OUTPUT LED Fig. Sequence operation state and OUTPUT LED DOKF series Matsusada Precision...
  • Page 81 Even when the sequence has been terminated and the output is held, pressing the OUPUT switch turns off the output. Current program number Current step number Elapsed time Number of loops to date Fig. Display during sequence run DOKF series Matsusada Precision...

  • Page 82: Edit, Save, And Cancel Of Program Data

    To cancel the sequence data edit and restore the settings before editing, press the CANCEL switch while editing. The screen will shift to the sequence stop. Resp: Fast Select “Prog Edit” and press CANCEL. Fig. Program edit screen Fig. Sequence stop (Available on all edit screen) DOKF series Matsusada Precision...
  • Page 83 Resp: MID1 Sense: OFF It indicates that the data is being saved. Do not turn off the unit while the message appears. Doing so, the data will not be correctly stored in memory and it may lead to malfunction. DOKF series Matsusada Precision...

  • Page 84: Program Parameters

    Select “Loop Number” on the program edit screen. Set your desired value by turning the Rotary encoder. When “0” is set, the steps are not repeated. When “---“ is set, the number of loops is set to infinite. DOKF series Matsusada Precision...
  • Page 85 (If you want to cancel the modification, press the CANCEL switch.) Do not turn off the unit while the message appears. Doing so, the data will not be correctly stored in memory and it may lead to malfunction. DOKF series Matsusada Precision...
  • Page 86 Fig. “Change Prog Num” selected Press ENTER Press CANCEL (Canceling the change) Prog No. End Step Loop Number End Setting Change Prog Num 64 Fig. Changing program number Program Data Clear Press ENTER Fig. Initializing Sequence program data DOKF series Matsusada Precision...
  • Page 87 Program Data Clear Press ENTER Fig. Initializing Sequence program data Do not turn off the unit while the message appears. Doing so, the data will not be correctly stored in memory and it may lead to malfunction. DOKF series Matsusada Precision...

  • Page 88: Step Parameters

    When the jump setting is set to “ON”, the number of jumps can be determined. No. of jumps 1 to 999 When the set value is exceeded, the next step will be executed. Save Save sequence program data DOKF series Matsusada Precision...
  • Page 89 Jump Set : ON Jump setting Jump Step : 38 Step No. for jumping destination Jump Number : 199 No. of jumps Save Save (Sequence Run Page) Matsusada Step Edit 2 Fig. Step Edit 2 screen DOKF series Matsusada Precision...
  • Page 90 Select “DCV” or “DCI” on Step Edit1 1 and select “Const” or “Ramp” by turning the Rotary encoder. DC start voltage/current Select “StartV” on Step Edit 1 and set a voltage or current value by turning the Rotary encoder. The range that can be set: −rating x 105% to +rating x 105% DOKF series Matsusada Precision...
  • Page 91 The range that can be set: 0.01Hz to 120.0kHz 12. End frequency Select “EndF” on Step Edit 1 and set your desired value by turning the Rotary encoder. The range that can be set: 0.01Hz to 120.0kHz DOKF series Matsusada Precision...
  • Page 92 It indicates that the data is being saved. Do not turn off power of the unit while the message appears. Doing so, the data will not be correctly stored in memory and it may cause malfunction. DOKF series Matsusada Precision...

  • Page 94: Communication Settings

    This section describes the settings of the main unit. NOTE: For details about the main unit setting, refer to DOKF series Communication Interface Instruction Manual. Overview The communication settings are located on the SYSTEM screen.
  • Page 95 To select “Address”, turn the Rotary encoder to set the GPIB address. When the settings are finished, turn off and on again the power of the product. Note that Original Command of Matsusada Precision is only available in GPIB. SCPI command is unavailable.

  • Page 96: Master/Slave Option (Parallel Operation / Batch Control By Master Unit)

    The D-sub cover of the cable is labeled as "Master", "Slave1", and "Slave2", so connect the cable connector to the M/S connector (D-sub 15-pin, female) on the rear panel of the unit and secure the cable connector by tightening the screws Master unit Mater Slave unit 1 Slave1 Slave unit 2 Slave2 DOKF series Matsusada Precision...

  • Page 97: Master/Slave Operation Procedures

    Slave units. If the setting does not match that in Step 2, the unit will not operate properly. Setting number of Slave units Settings of Slave units to the Master unit None Slave unit 1 Salve unit 1 and 2 After saving the settings, turn off the POWER switch on the Master unit. DOKF series Matsusada Precision...
  • Page 98 During Master/Slave operation with the communication option, the Master unit is only available. The Slave units are not allowed to use communication function (while it is available in unit operation). Also, during Master/Slave operation, GPIB communication is unavailable. (It is available in unit operation). DOKF series Matsusada Precision...

  • Page 99: Master/Slave Operation

    The displayed measurement values are the values measured by the unit (including the current values). The current value displayed is just for the Slave unit alone. It indicates the Slave unit 1. In the case of the Slave unit 2, <SLAVE2> will be displayed. DOKF series Matsusada Precision...
  • Page 100 The number of Slave units can be set to 0 to 2, but when setting the number of Slave units to 0, connect the cable to the Master unit only and do not connect it to the Slave units. DOKF series Matsusada Precision...
  • Page 101 When using the communication option, only the Master unit is connected to a controller via communication and set the same values to the Master unit as for the local operation and settings. (The Slave units are unavailable.) DOKF series Matsusada Precision...
  • Page 102 Response MID1 +10.003 V Sense Ext Signal Vrms 14.138 V Soft Start Soft Stop Irms 28.295 A SYSTEM Slave No. Number of Slave +19.991A units Matsusada Main Set2 ＜SLAVE１＞ Fig. Main Set 2 on Slave unit DOKF series Matsusada Precision...
  • Page 103 When changed the settings for the Slave units, be sure to save the settings, set the POWER switch to OFF, and then set the POWER switch to ON again to restart the unit. Without rebooting the units, it may not operate properly. DOKF series Matsusada Precision...
  • Page 104 When reading out measured values with the communication option of USB and RS-232C, only the master unit is connected to a controller via the communication and read out the total values across the entire Master/Slave units. The Slave units are unavailable for communication function. DOKF series Matsusada Precision...

  • Page 105: Master/Slave Protection Operation

    "OUTPUT" Slave 1 disabled switch on the Master unit to clear the state. The Slave unit 1 detected an error and the entire units are in a fault state. Slave 2 enabled DOKF series Matsusada Precision...
  • Page 106 Overtemperature protection activated and Fault FAULT (E02) OT! Each unit state Example: Display on a unit that has been stopped due to an error in another unit Resp: Fast Sense: OFF An error detected in DETECT FAULT! another unit DOKF series Matsusada Precision...

  • Page 107: Cautions In Master/Slave Operation

    Be sure to check the connection to prevent malfunction. Output terminals Master unit Master unit Load Slave unit 1 Load Slave unit 1 Slave unit 2 Slave unit 2 Correct connection Wrong connection DOKF series Matsusada Precision...

  • Page 108: Synchronized Operation Option (Synchronous Trigger / Synchronous Clock)

    It is possible to connect other instruments that can be synchronized with a 10 MHz clock, but it is not guaranteed to work with them other than DOKF series. When the master/slave operation (parallel operation) option is used, synchronous operation is not available.

  • Page 109: Synchronous Trigger

    TRIG_MOUT Synchronous Master unit trigger Output Synchronous Master unit TRIG_SIN Synchronous Slave unit trigger Input Synchronous Slave unit TRIG_SOUT Synchronous Slave unit trigger Output Synchronous Slave unit Common of synchronous signal 9 to 15 (Not connected) DOKF series Matsusada Precision...
  • Page 110 Pin 5 TRIG_MOUT Synchronous Slave unit 1 Pin 2 SIN Pin 3 SOUT Pin 6 TRIG_SIN Pin 4 COM Pin 8 COM Pin 7 TRIG_SOUT Synchronous slave unit 2 Pin 2 SIN Pin 6 TRIG_SIN Pin 8 COM DOKF series Matsusada Precision...

  • Page 111: Setting Synchronous Trigger

    (Synchronous Slave unit) by turning the Rotary encoder. Then, press the SET/SAVE switch to save the setting. [NOTE] Use TRIG command for setting Synchronous Master/Slave units in the synchronous trigger function. For details, refer to DOKF series Communication Interface Instruction Manual. DOKF series Matsusada Precision...

  • Page 112: Applications For Synchronous Trigger

    In the case where a fault occurred on a synchronous slave unit: The output of the synchronous slave unit that the fault occurred on is only turned off. Remove the factors that caused the fault on the synchronous master unit and clear the fault. DOKF series Matsusada Precision...

  • Page 113: Synchronous Clock

    Connect from the CLK OUT of the clock reference unit to the CLK IN of the next power supply unit in sequence. Coaxial cable Any power supply can be used as the reference unit. Units operating synchronously Coaxial cable Units operating synchronously DOKF series Matsusada Precision...

  • Page 114: Setting Synchronous Clock

    "EN (Enabled)" to operate with the synchronous clock. Then, connect the clock signal in cascade. Unit 1 Synchronous clock setting: DEN (Disabled) *This unit will be a reference for the synchronous clock operation. Unit 2 Synchronous clock setting: EN (Enabled) Unit 3 Synchronous clock setting: DEN (Disabled) DOKF series Matsusada Precision...
  • Page 115 Then, press the SET/SAVE switch to save the setting. [NOTE] On communication, the synchronization clock needs to be enabled or disabled with the EXTCLK command. For details, refer to DOKF series Communication Interface Instruction Manual. DOKF series Matsusada Precision...

  • Page 116: Locking The Clock

    When the clock is connected and set correctly, If transitions from the locked to the unlocked state and vice versa were repeated, it may cause malfunction. In such a case, turn off the unit and check the connection before trying to operate it again. DOKF series Matsusada Precision...

  • Page 117: Input And Output Signals Of Synchronous Clock

    If units receiving the clock are turned on before the reference unit, the clock may not be locked properly. DOKF series Matsusada Precision...
  • Page 118 Revision History Rev. No. Rev. Date Revision Contents 2022/05 First edition (in line with the latest Japanese)

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