BK PRECISION 4017B Instruction 电路图.pdf

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1、0 INSTRUCTION MANUAL Model 4017B 10MHz DDS SWEEP/FUNCTION GENERATOR RadioFans.CN 收音机爱 好者资料库 1 Table of Contents 1. Introduction to the Model 4017B 2 1.1. Description .2 1.2. Feature Summary. 2 2. Front panel.2 2.1. Brief description. Using the controls.2 2.2. Buttons and knobs. LED functionality des

2、cription. 3 3. Operating the Model 4017B. 6 3.1. Parameters setting .6 3.1.1. Frequency setting (except FREQCOUNTER mode).6 3.1.2. Level setting (except FREQCOUNTER mode).8 3.1.3. Offset setting (except FREQCOUNTER mode).8 3.1.4. Duty cycle setting (except FREQCOUNTER mode).9 3.1.5. CMOS level setti

3、ng (except FREQCOUNTER mode). .9 3.1.6. Sweep time setting (only for INTERNAL SWEEP mode). .9 3.1.7. Sweep width setting (only for INTERNAL SWEEP mode). .10 3.1.8. Gate setting (only for FREQCOUNTER mode). 10 3.2. Mode description.10 3.2.1 EXTERNAL VCG (External Voltage Control Generator.10 3.2.1.1

4、Selecting EXTERNAL VCG mode.12 3.2.1.2 Selecting output waveform.12 3.2.1.3 Selecting the frequency .12 3.2.1.4 Selecting the level.13 3.2.1.5 Selecting the offset .13 3.2.1.6 Selecting the duty cycle.13 3.2.1.7 Selecting output TTL/CMOS level.13. 3.2.2 INTERNAL SWEEP.12 3.2.2.1 Selecting INTERNAL S

5、WEEP mode.12 3.2.2.2 Selecting output waveform.12 3.2.2.3 Selecting the frequency .12 3.2.2.4 Selecting the level.13 3.2.2.5 Selecting the offset .13 3.2.2.6 Selecting the duty cycle.13 3.2.2.7 Selecting output TTL/CMOS level.13 3.2.2.8 Selecting sweep width.13 3.2.2.9 Selecting sweep time.13 3.2.2.

6、10 Selecting type of sweeping. 13 3.2.3 FREQCOUNTER (Frequency Counter mode).13 3.2.3.1 Selecting FREQCOUNTER mode.14 3.2.3.2 Selecting gate period .14 3.2.4 Saving the default loaded mode at power-up.14 3.2.5 Setting parameters examples.14 3.2.5.1 Example of setting parameters in EXTERNAL VCG mode.

7、14 3.2.5.2 Example of setting parameters in INTERNAL SWEEP mode .16 3.2.5.3 Example of setting gate period in FREQCOUNTER mode.19 3.2.5.4 Example of saving the default mode at power-up .19 3.2.5.5 Waveform examples.20 3.3 Remote operation.25 3.3.1 Brief command description.25 3.3.2 Commands descript

8、ion.25 3.3.2.1 General rules.25 3.3.2.2 Commands description.26 3.3.3 Remote program examples.34 3.3.3.1 Example of setting parameters in EXTERNAL VCG mode using REMOTE control mode.34 3.3.3.2 Example of setting parameters in INTERNAL SWEEP mode using REMOTE control mode .35 3.3.3.3 Example of setti

9、ng parameters in FREQCOUNTER mode using REMOTE control mode. 36 4 Specifications. 37 5 Service Information. 38 RadioFans.CN 收音机爱 好者资料库 2 1. Introduction to the 4017B. 1.1 Description The B therefore the 50 ohm loaded output level is 10.0Vpp, with an offset voltage capability of 5.0 Vpp. The output l

10、evel can be adjusted with a resolution of 1mV and 10mV, depending on the level range being worked on. The offset level can be adjusted with a resolution of 1mV. The 4017B is capable of generating a TTL/CMOS compatible square wave on TTL/CMOS jack. The output level can be up to 14.0 Vpp (unloaded). O

11、n the VCG/SWEEP input jack, DC levels can be applied between 0V to 10.0V in order to change the output operating frequency with a ratio between 1:1 and 1:100. This jack is also used as a frequency counter input, for frequencies between 5Hz and 100MHz. The front panel of the Model 4017B includes LCD

12、display, buttons, “intelligent” knobs and an LED in order to operate the unit quick and easy. The “intelligent” knobs are one of the main features of this new model, which reduces the number of controls needed for changing the value of a parameter. The LCD display is a large 2-line 16 columns back l

13、ighted display. The unit also features an EIA-RS232 connector on the rear of the unit. This permits the user to remote control the 4017B using ASCII characters. No special hardware or protocols are needed; any dumb terminal or computer serial port can be used. The baud rate is fixed to 9600 BPS. 1.2

14、 Feature Summary 2. Front panel. 2.1 Brief description. Located on the Front Panel is the LCD display, controls, power switch, connection jacks and LED (see the figure 2 for details). The LCD display is a backlit, 2-row 16-columns LCD display. There are two kinds of controls: buttons and knobs. All

15、buttons are implemented as 1-parameter single function control, except the range buttons that have a second function. Pressing the range buttons (UP and DOWN buttons) twice at the same time will save the current working state as the default loaded state at power- up. Pressing any other buttons at th

16、e same time will have no effect upon the current working state. There are 2 kinds of buttons: one category has no LEDs, the other category has LEDs. Pressing one of the buttons from the first category will change the values on the LCD display. The knobs are implemented as 3-parameter single function

17、 control, with “intelligent” control. The parameters defining an knob are: value, rotations direction, and rotations speed. The value identifies the parameter being changed. The rotations direction, clockwise or counter clockwise, determines whether the value of the parameter is increment or decreme

18、nt respectively, by an amount of 1. The speed of rotation sets the position in the parameters digits of the digit being modified. The “intelligent knob” implementation allows a very simple and intuitive way of changing parameter values and reducing the number of controls used. RadioFans.CN 收音机爱 好者资料

19、库 3 2.2 Buttons and knobs. LED functional description. LCD Display. This is a 2 line X 16 columns LCD-large type display. The first line will always display the generated waveform frequency or the frequency measured sampling COUNTER IN input. The second line is used to display other parameters of th

20、e generated waveform, depending on the mode being worked: level, offset introduced, TTL/CMOS level, duty cycle when in EXTERNAL VCG mode, and additional parameters, time and width sweep when in INTERNAL SWEEP mode. In FREQCOUNTER mode on the second line, the gate used in sampling COUNTER IN input is

21、 displayed. Frequency field. This field is used for displaying parameter frequency. The value displayed has a different meaning depending on the working mode. If in EXTERNAL VCG or INTERNAL SWEEP, the value represents the generated waveform frequency on the main output source, OUTPUT jack, and it is

22、 a 5-digit resolution value. If in FREQCOUNTER mode, the value represents the frequency of the signal sampled on COUNTER IN input, and can be a 9-digit resolution value. Frequency unit value. This field will display the multiplying factor used for displaying frequency value. It changes when the user

23、 modifies the range using “UP” and “DOWN” buttons. Frequency range. This field will display the range in which the frequency value displayed in frequency field can be changed. It changes when user modifies the range using “UP” and “DOWN” buttons. 1 2 3 4 BK PRECISION 4017B 10MHz DDS SWEEP/FUNCTION G

24、ENERATOR 22.222KHz 100k 1.01 V Output FREQUENCY RANGE (Hz) LEVEL Peak-to-Peak (into 50 ) DOWN UP Range OUTPUT LEVELDUTY CYCLE CMOS LEVEL DC OFFSET FREQUENCY POWER SWEEP WIDTHTIME INT EXT LIN LOG CMOS TTL COUNTER VCG SWEEP -20dB WAVEFORM OUTPUT TTL CMOS VCG SWEEP COUNTER IN 50 4 3 2 7 856 11 12 13 14

25、 15 16 17 19 18 20 21 22 23 24 25 26 27 28 9 1 10 29 30 31 32 33 34 35 36 37 38 39 40 4 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. Changing the range will affect the frequency field, frequency unit value and frequency range. By pressing these two buttons tog