BK Precision 4017B Instruction Manual
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BK Precision 4017B Instruction Manual

BK Precision 4017B Instruction Manual

10mhz dds sweep/function generation
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INSTRUCTION
Model 4017B
MANUAL
10MHz DDS SWEEP/FUNCTION GENERATOR
0
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com

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Summary of Contents for BK Precision 4017B

  • Page 1 INSTRUCTION Model 4017B MANUAL 10MHz DDS SWEEP/FUNCTION GENERATOR Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 FAX 781.665.0780 - TestEquipmentDepot.com...
  • Page 2 Table of Contents 1. Introduction to the Model 4017B 1.1. Description ....................................2 1.2................................. 2 Feature Summary Front panel ......................................2 2.1. Brief description. Using the controls............................2 2.2......................3 Buttons and knobs. LED functionality description. 3. Operating the Model 4017B............................6 3.1.

  • Page 3: Description

    The B&K Precision Model 4017B has 3 jacks: 2 for output and 1 input. The OUTPUT jack is the main signal output. The TTL/CMOS jack is a TTL/CMOS compatible square wave output. The VCG/SWEEP jack is an input used for controlling the operating frequency and input to frequency counter.
  • Page 4 2.2 Buttons and knobs. LED functional description. ® BK PRECISION 4017B 10MHz DDS SWEEP/FUNCTION GENERATOR -20dB COUNTER CMOS FREQUENCY RANGE (Hz) 22.222KHz 100k WAVEFORM DOWN SWEEP 1.01 V Output DUTY CYCLE CMOS LEVEL DC OFFSET OUTPUT LEVEL LEVEL Range Peak-to-Peak (into 50Ω)
  • Page 5 Range buttons. Pressing those buttons will change the frequency range. Pressing the UP and DOWN buttons means that frequency range will change up and down, respectively. If reaching the upper or lower range by pressing the UP or DOWN buttons, it will pass to the lower range or upper range, respectively.
  • Page 6 TRIANGLE WAVE SELECT button. Pressing this button will enable outputting of a triangle style waveform on main output, OUTPUT jack, and it will be indicated by a lighted TRIANGLE WAVE SELECT LED. TRIANGLE WAVE SELECT LED. LED associated with TRIANGLE WAVE SELECT button, it lights when unit outputs a triangle wave style signal on OUTPUT jack.

  • Page 7: Operating The Model 4017B

    EXTENAL VCG mode and moreover time and width sweep for INTERNAL SWEEP mode. 3. Operating the Model 4017B. There are 2 modes of controlling the unit and 3 modes of operating the unit. One of the control modes uses the front panel; the other mode is by remote, using the RS232 interface.
  • Page 8 There are 5 frequency ranges available, which allows the user to set desired frequency between 0.00Hz and 10.000MHz. Pressing UP and DOWN buttons will change the range. Within every range the frequency can be changed with a 5-digit resolution using FREQUENCY knob.

  • Page 9: Level Setting (Except Freqcounter Mode)

    The value displayed on the frequency value field on the LCD display represents the instant output frequency and is updated on the LCD display every 0.1s. Use the UP and DOWN buttons to select the appropriate range of the sweep start frequency. The FREQUENCY knob is used to select the sweep start frequency within a range (see Table1 for range’s details).

  • Page 10: Duty Cycle Setting (Except Freqcounter Mode)

    | offset voltage | + ½ * V < 5.0 V 3.1.4. Duty cycle setting (except FREQCOUNTER mode). This section describes the duty cycle setting of the signal outputted at the main output, OUTPUT jack. Duty cycle can be set between 0% - 100%, by turning the DUTY CYCLE knob, using 1% resolution (see Table 4). The DUTY CYCLE LED associated to DUTY CYCLE knob will be lighted when set duty cycle differs 50%, thus the signal on main output is asymmetric.

  • Page 11: Sweep Width Setting (Only For Internal Sweep Mode)

    Table 6: Sweep time range Sweep time parameter is displayed on the second line of the LCD display using a 4-digit value field and a decimal point, followed by the measuring unit. The words “Sweep Time” will be displayed on the right of the second line to identify that the sweep time parameter is shown.
  • Page 12 If in the INTERNAL SWEEP mode (INT LED lights), pressing the SWEEP INT/EXT button will engage the EXTERNAL VCG mode. By engaging this mode, the EXT LED lights, and INT LED stops lighting. If in the FREQCOUNTER mode (COUNTER LED lights), pressing the COUNTER/VCG SWEEP button will engage the mode selected by the SWEEP INT/EXT button.

  • Page 13: Selecting Output Waveform

    Attention: The square wave has the true meaning of duty cycle. By turning the DUTY CYCLE knob, the symmetry of the waveform will change for the sine wave and triangle wave. For sine wave, a distorted wave shape will be obtained and for the triangle wave, a ramp wave will be obtained.

  • Page 14: Selecting The Level

    3.2.2.4. Selecting the level. The signal’s output level can be set on the OUTPUT jack, using the OUTPUT LEVEL rotary knob, between 10mV and 10.0V 50 Ω load), regardless of the waveform type. See section 3.1.2 for details regarding the setting of the level value (see example from section 3.2.5.2).

  • Page 15: Selecting Freqcounter Mode

    3.2.3.1 Selecting FREQCOUNTER mode COUNTER LED lighting indicates active FREQCOUNTER mode. Engage in FREQCOUNTER mode by pressing the COUNTER / VCG SWEEP button. The COUNTER LED will be lighted and the word “Counter” will be displayed on the second line of the LCD. 3.2.3.2 Selecting gate.
  • Page 16 Step 2 FREQUENCY RANGE (Hz) 878.00KHz Turn the FREQUENCY knob till you reach the desired frequency, 878.00 KHz. The LCD display should look like Figure 4. The output frequency is now 878 KHz. 1.01 V Output LEVEL Peak-to-Peak (into 50Ω) Figure 4: LCD example of using Step 3 fourth frequency range...

  • Page 17: Example Of Setting Parameters In Internal Sweep Mode

    Step 8 (automatic step performed) The unit will display the output level parameter as shown in Figure 6, 7 seconds after the last change on the second line of LCD display. External voltage control generator. The current output frequency should be changed to 878 KHz by controlling the DC level applied to VCG/SWEEP input jack. Apply a DC level between + 5.0 V and + 10.0 V.
  • Page 18 Step 3 Press the SQUARE WAVE SELECT button. The unit must output a symmetrical square wave type signal on the OUTPUT jack. As an effect of pressing the button, the SQUARE WAVE SELECT LED lights and the TRIANGLE WAVE SELECT LED is not lighted.
  • Page 19 Step 8 FREQUENCY RANGE (Hz) 8.0000MHz Press the TTL/CMOS button. The CMOS LED will light and the TTL LED will 4.0 V CMOS OUT not light. Turn the CMOS LEVEL knob counter clockwise until CMOS level reaches 4.0V. The LCD display should look like Figure 17. LEVEL Peak-to-Peak (into 50Ω)

  • Page 20: Example Of Setting Gate Period In Freqcounter Mode

    3.2.5.3 Example of setting gate period in FREQCOUNTER mode. To measure the frequency of an input signal on VCG SWEEP/COUNTER IN jack, use 2 gate periods, 0.1s and 10s. Suppose the frequency of the input signal is 63,877,099Hz, the level is under 10V Step1 FREQUENCY RANGE (Hz)

  • Page 21: Waveform Examples

    Step 2 (the successful case) FREQUENCY RANGE (Hz) Configuration Press both the range buttons, UP and DOWN again at the same time. The current saved configuration will be saved and the LCD display content will change, and it must look like Figure 26, for 3 seconds. LEVEL Peak-to-Peak (into 50Ω)
  • Page 22 Example of asymmetric sine wave, duty cycle set to 20%. Example of symmetric sine wave, duty cycle set to 50%. Example of asymmetric sine wave, duty cycle set to 68%. Example of asymmetric sine wave, duty cycle set to 80%.
  • Page 23 Example of asymmetric sine wave, duty cycle set to 100%. Example of square wave type signals Example of asymmetric square wave (pulse wave), duty cycle set to 0%. Example of asymmetric square wave (pulse wave), duty cycle set to 25%. Example of symmetric square wave, duty cycle set to 50%.
  • Page 24 Example of asymmetric square wave (pulse), duty cycle set to 70%. Example of asymmetric square wave (pulse), duty cycle set to 95%. Example of triangle (ramp) wave type signals Example of ramp wave (asymmetric triangle), duty cycle set to 0%. Example of ramp wave (asymmetric triangle), duty cycle set to 20%.
  • Page 25 Example of symmetric triangle, duty cycle set to 50%. Example of ramp wave (asymmetric triangle), duty cycle set to 70%. Example of ramp wave (asymmetric triangle), duty cycle set to100%. Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 FAX 781.665.0780 - TestEquipmentDepot.com...

  • Page 26: Brief Command Description

    3.3 REMOTE mode This is not an operating mode; it is another method of controlling the Model 4017B, through the RS232 interface. By using the REMOTE mode, every aspect of the unit can be controlled using a terminal without having to turn or press the front panel buttons.

  • Page 27: Commands Description

    General syntax: XXXX[[z]yyyyyyyyyy] These are the notations used in the syntax expression: XXXX Represents the main command body implemented using the hex ASCII characters “A” to “F”, “0” to “9”. Main command body can be up to 4–digit length. Commands are not case sensitive. Parameter used only for type III command and represents the sign digit.
  • Page 28 Parameters: None Description: Asks for the unit type connected to the interface. Example: Message returned to terminal: “BK Precision Model 4017B” IP command Syntax: Parameters: None Description: Asks for the presence of the unit at the terminal. Unit must return a message indicating the presence.
  • Page 29 Sends to terminal the unit’s serial number. Example: Message returned to terminal: “Serial Number: XXX-YYYY-ZZZZ” where XXX-YYYY-ZZZZ Represents the serial number according to BK Precision codification. Type III command: commands for setting mode and its parameters CM command Syntax: Parameters: x is a 3 possible value digit: 0, 1 or 2.
  • Page 30 If x = I the measured frequency will be sent to the terminal. Example: Case 1 CFS4000 – sets the start frequency at 4000 Hz. Case 2 CFU – increases the gate period used in measuring frequency Message returned to terminal: Case 1: “Output frequency: yyyyyyyy,yy Hz”...
  • Page 31 CT command Syntax: CTx [yyy] Parameters: x represents a digit that has only 2 valid values: “I” or “S”. yyy is a decimal digit value between 40 and 140, valid if x =S. Description: The command sets/interrogates the level on TTL/CMOS output. The command is available only on EXTERNAL VCG and INTERNAL SWEEP mode.
  • Page 32 yyyy is a decimal digit value between 1 and 3000, valid if x = S. Description: The command sets/interrogates the frequency sweep time of the output signal on the OUTPUT jack. The command is available only on INTERNAL SWEEP mode. If x = S the sweep time will take values between 0.01 s and 30.00 s.
  • Page 33 CB command Syntax: CBx [y] Parameters: x represents a digit that has only 2 valid values: “I” or “S”. y represents a decimal digit, valid if x = S. Description: The command sets/interrogates the mode of displaying the decimals in American or French.
  • Page 34 Message returned to terminal: “-20dB attenuation engaged on OUTPUT jack” if y = “E” “-20dB attenuation disengaged on OUTPUT jack” if y =”D” “Incorrect command” if any of the digits sent was not valid. Type IV command: Used for saving/loading the current configuration / saved configuration. SSS command Syntax: Parameters:...

  • Page 35: Remote Program Examples

    3.3.3 Remote program examples The program examples are the equivalents of the controls used in the example shown in section 3.2.5. Assume the same starting conditions: EXTERNAL VCG mode, symmetric triangle style waveform outputted, no signal at VCG/SWEEP input jack, output frequency set to 2.2222KHz, output level 1.01V, DC offset 0V, TTL style signal outputted on TTL/CMOS jack.
  • Page 36 3.3.3.2 Example of setting parameters in INTERNAL SWEEP mode using REMOTE control. Step Corresponding Issued command Message returned step in example from section 3.2.5.2 RERE Remote mode engaged CFS800000000 Output frequency: 8000000,00 Hz Square function generated CDS40 Duty cycle: 40 % CLS500 Output level: 500 mV COS+2100...
  • Page 37 3.3.3.3 Example of setting gate period in FREQCOUNTER mode using REMOTE control. Step Corresponding Issued command Message returned step in example from section 3.2.5.2 RERE Remote mode engaged Mode FREQCOUNTER engaged Gate period 0.1 s Measured frequency: 63877100 Hz Gate period 1 s Measured frequency: 63877100 Hz Gate period 10 s Measured frequency: 63877099 Hz...

  • Page 38: Specifications

    4. SPECIFICATIONS REQUENCY CHARACTERISTICS: TTL OUTPUT: Waveforms: Sine, Square, Triangle, ± Pulse, ± Level: 0.8V to 4V ≤20ns Ramp Rise Time: Frequency: 0.01 Hz to 10MHz Duty Cycle: 50% typical Available ranges: Resolution: 5 digits CMOS OUTPUT Variable Duty Cycle: 0 to 100% continuously variable, 3-digit resolution Max frequency:...

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