CN111697948A - Digital synthesis high-frequency standard signal generator - Google Patents
Digital synthesis high-frequency standard signal generator Download PDFInfo
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- CN111697948A CN111697948A CN202010524897.3A CN202010524897A CN111697948A CN 111697948 A CN111697948 A CN 111697948A CN 202010524897 A CN202010524897 A CN 202010524897A CN 111697948 A CN111697948 A CN 111697948A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/78—Generating a single train of pulses having a predetermined pattern, e.g. a predetermined number
Abstract
The invention discloses a digital synthesis high-frequency standard signal generator, relates to the technical field of synthesis signal generators, and aims to solve the problem that a common digital synthesis standard signal generator in the prior art only has one output. Install VFD display, main menu key, on & off switch, warning light, digital button, A delivery outlet and B delivery outlet on the preceding terminal surface of casing respectively, the inside of casing is provided with function generator, VFD display, main menu key, A delivery outlet and B delivery outlet all with function generator electric connection, one side of function generator is provided with the calculator mainboard, digital button and calculator mainboard electric connection, install supply socket on the rear end face of casing, the internally mounted of casing has the distributor, supply socket and distributor electric connection, one side of distributor is provided with the stabiliser, the top of stabiliser is provided with connects the electric end.
Description
Technical Field
The invention relates to the technical field of synthetic signal generators, in particular to a digital synthetic high-frequency standard signal generator.
Background
The frequency synthesis technology refers to a technology of obtaining a large number of discrete frequencies with the same stability and accuracy through linear operation in a frequency domain by one or more frequency reference sources with high stability and high accuracy, a device for achieving the function is called a frequency synthesizer, a frequency synthesis signal generator is a signal source which is important in research, teaching experiments and various electronic measurement technologies, the application range of the frequency synthesizer is very wide, and the frequency synthesizer plays an extremely important role particularly in communication systems and radar systems.
A digital synthesis high-frequency standard signal generator adopts an advanced DDS frequency synthesis technology to realize the frequency resolution of 1 mu Hz (carrier frequency is less than or equal to 80MHz) and 1Hz (carrier frequency is more than 80MHz), the frequency covers 100 mu Hz-300 MHz, and the level covers-127 dBm- +13dBm, and is a new generation high-performance synthesis signal generator; therefore, the market is urgently in need of developing a digital synthesis high-frequency standard signal generator to help people to solve the existing problems.
Disclosure of Invention
The present invention aims to provide a digital synthesis high frequency standard signal generator to solve the problem that the common digital synthesis standard signal generator proposed in the above background art has only one output.
In order to achieve the purpose, the invention provides the following technical scheme: a digital synthesis high-frequency standard signal generator comprises a shell, wherein a VFD display, a main menu key, an on-off key, a prompting lamp, a digital key, an A output port and a B output port are respectively arranged on the front end surface of the shell, the interior of the shell is provided with a function generator, the VFD display, the main menu key, the A output port and the B output port are all electrically connected with the function generator, a calculator main board is arranged on one side of the function generator, the number keys are electrically connected with the calculator main board, a power socket is arranged on the rear end surface of the shell, a distributor is arranged in the shell, the power socket is electrically connected with the distributor, one side of the distributor is provided with a voltage stabilizer, an electric connecting terminal is arranged above the voltage stabilizer, the distributor and the electric connection terminal are electrically connected with the voltage stabilizer, and the function generator and the calculator mainboard are electrically connected with the electric connection terminal.
Preferably, an external trigger input port, a modulation input port, a frequency measurement counting input port, a TTL output port and an external standard frequency input port are respectively installed on the rear end face of the shell, the external trigger input port, the modulation input port, the TTL output port and the external standard frequency input port are electrically connected with the function generator, and the frequency measurement counting input port is electrically connected with the computer mainboard.
Preferably, the rear end face of the shell is provided with a USB interface and an RSC serial interface respectively, the USB interface and the RSC serial interface are both electrically connected with the function generator, the on-off key and the indicator light are both electrically connected with the distributor, and the RSC serial interface and the USB interface are both fixedly connected with the shell through fastening screws.
Preferably, the two sides of the shell are provided with two auxiliary handles which are fixedly connected with the shell.
Preferably, be provided with data plate and vice base on the rear end face of casing respectively, data plate and vice base all set up structure as an organic whole with the casing, vice base is provided with four, distributor and stabiliser all with casing fixed connection.
Preferably, be provided with the thermovent on the rear end face of casing, and thermovent and casing set up structure as an organic whole, install the dead lever on the rear end face of casing, the grid is installed to one side of dead lever, the dead lever is provided with two, two the dead lever all with grid welded connection, two the dead lever all is through fastening screw and casing fixed connection.
Preferably, the main handle is installed to the top of casing, the main handle rotates with the casing to be connected, the top of casing is provided with the anticollision strip, the anticollision strip is provided with four, four the anticollision strip all sets up structure as an organic whole with the casing.
Preferably, the access door is installed to the below of casing, the access door passes through fastening screw fixed connection with the casing, the below of casing is provided with main base, main base is provided with four, just main base all sets up structure as an organic whole with the casing, supply socket passes through fastening screw fixed connection with the casing.
Preferably, one side of the VFD display is provided with an adjusting knob, and the adjusting knob is electrically connected with the function generator.
Preferably, the inside of casing is provided with the baffle, and baffle and casing set up structure as an organic whole, function generator and calculator mainboard all with baffle fixed connection.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arrangement of the output port B and the output ports B and TTL, the function signal generator can independently transmit on one line, and the phase difference of the lines of the output port A can be controlled by the lines of the output port B and the output port TTL, so that the problem that the traditional digital synthesis standard signal generator only has one output is changed, the problem that the measured data is too single is also avoided, and the digital synthesis standard signal generator can meet social requirements better.
2. According to the invention, through the arrangement of the USB interface, the graphic signal of the function signal generator can be transmitted to the PC end through the USB interface, so that the signal source generated by the function signal generator can be further analyzed through the PC end, and the digital synthesis standard signal generator has stronger analysis capability.
Drawings
FIG. 1 is a front view of a digital composite high frequency standard signal generator of the present invention;
FIG. 2 is a rear view of a digital synthesized high frequency reference signal generator of the present invention;
FIG. 3 is a schematic diagram of the internal structure of a digital synthesis high frequency standard signal generator according to the present invention;
FIG. 4 is a top view of a digital composite high frequency reference signal generator according to the present invention;
fig. 5 is a bottom view of a digital composite high frequency reference signal generator of the present invention.
In the figure: 1. a housing; 2. a VFD display; 3. adjusting a knob; 4. a secondary handle; 5. a main menu key; 6. an on-off key; 7. a warning light; 8. a number key; 9. an output port A; 10. an output port B; 11. an external trigger input port; 12. a modulation input port; 13. a frequency measurement counting input port; 14. a TTL output port; 15. an external standard frequency input port; 16. a heat dissipation port; 17. fixing the rod; 18. a power socket; 19. a nameplate; 20. a USB interface; 21. RS232C serial interface; 22. a sub-base; 23. a function generator; 24. a calculator motherboard; 25. a partition plate; 26. a power distributor; 27. a voltage regulator; 28. connecting a power terminal; 29. an anti-collision strip; 30. a main handle; 31. a main base; 32. an access door; 33. a grid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an embodiment of the present invention is shown: a digital synthesis high-frequency standard signal generator comprises a shell 1, wherein a VFD display 2, a main menu key 5, an on-off key 6, a prompt lamp 7, a numeric key 8, an A output port 9 and a B output port 10 are respectively arranged on the front end face of the shell 1, a function generator 23 is arranged inside the shell 1, the VFD display 2, the main menu key 5, the A output port 9 and the B output port 10 are all electrically connected with the function generator 23, a calculator mainboard 24 is arranged on one side of the function generator 23, the numeric key 8 is electrically connected with the calculator mainboard 24, a power socket 18 is arranged on the rear end face of the shell 1, a power distributor 26 is arranged inside the shell 1, the power socket 18 is electrically connected with the power distributor 26, a voltage stabilizer 27 is arranged on one side of the power distributor 26, a power connection end head 28 is arranged above the voltage stabilizer 27, and the power distributor 26 and the power connection end head 28 are both, function generator 23 and calculator mainboard 24 are all connected with electric contact 28.
Further, an external trigger input port 11, a modulation input port 12, a frequency measurement counting input port 13, a TTL output port 14 and an external standard frequency input port 15 are respectively installed on the rear end face of the shell 1, the external trigger input port 11, the modulation input port 12, the TTL output port 14 and the external standard frequency input port 15 are all electrically connected with a function generator 23, the frequency measurement counting input port 13 is electrically connected with a calculator mainboard 24, the TTL output port 14 and the B output port 10 are the same circuit and can be directly controlled by the function generator 23, the external trigger input port 11 is used for receiving wavelength, the modulation input port 12 is used for adjusting input function signals, signals transmitted by the frequency measurement counting input port 13 are calculated and output by the calculator mainboard 24, and the external standard frequency input port 15 can directly receive specific frequency scanning signals.
Further, install USB interface 20 and RS232C serial interface 21 on the rear end face of casing 1 respectively, USB interface 20 and RS232C serial interface 21 all with function generator 23 electric connection, on & off switch 6 and warning light 7 all with distributor 26 electric connection, RS232C serial interface 21 and USB interface 20 all through fastening screw and casing 1 fixed connection, function generator 23 dominant waveform: sine wave, square wave, waveform amplitude resolution: 12bits, sampling rate: 200Msa/s, sine wave harmonic distortion: -50dBc (frequency ≦ 5MHz), -45dBc (frequency ≦ 10MHz), -40dBc (frequency ≦ 20MHz), -35dBc (frequency >20MHz), sine wave distortion: less than or equal to 0.2 percent (frequency: 20 Hz-100 kHz), square wave lifting time: less than or equal to 25ns (SPF05A is less than or equal to 28 ns).
Further, vice handle 4 is all installed to casing 1's both sides, and vice handle 4 is provided with two, two vice handle 4 all with casing 1 fixed connection, 24 frequency measurement ranges of calculator mainboard: the frequency measurement is carried out at 10 Hz-100 MHz, the count is less than or equal to 50MHz, and the input characteristics are as follows: minimum input voltage: "ATT" open: 50mVrms (frequency: 100 Hz-50 MHz), 100mVrms (frequency: 10 Hz-100 MHz), ATT closing: 0.5Vrms (frequency: 100 Hz-50 MHz), 1Vrms (frequency: 10 Hz-100 MHz), maximum allowable input voltage: 100Vp-p (frequency is less than or equal to 100kHz), 20Vp-p (frequency is less than or equal to 100MHz), input impedance: r >500k Ω C <30PF, coupling: AC, waveform adaptability: sine wave, square wave, low pass filter: cut-off frequency of about 100kHz, in-band attenuation: less than or equal to-3 dB, out-of-band attenuation: ≧ 30dB (frequency >1MHz), measurement time: 10 ms-10 s are continuously adjustable, and the display digit is as follows: eight bits (gate time >5s), count capacity: 4.29 × 109, and the counting control mode is as follows: manual control, measurement error: time base error + -trigger error (the signal-to-noise ratio of the measured signal is better than 40dB, the trigger error is less than or equal to 0.3), time base: the category: small crystal oscillator, nominal frequency: 10MHz, stability: is better than +/-1X 10-4(22 +/-5 ℃).
Further, be provided with data plate 19 and sub-base 22 on the rear end face of casing 1 respectively, data plate 19 and sub-base 22 all set up structure as an organic whole with casing 1, and sub-base 22 is provided with four, distributor 26 and stabiliser 27 all with casing 1 fixed connection.
Further, be provided with thermovent 16 on the rear end face of casing 1, and thermovent 16 sets up to a body structure with casing 1, installs dead lever 17 on the rear end face of casing 1, and grid 33 is installed to one side of dead lever 17, and dead lever 17 is provided with two, and two dead levers 17 all with grid 33 welded connection, and two dead levers 17 all pass through fastening screw and casing 1 fixed connection, and RS232C serial interface 21 can constitute automatic test system with other instruments under the control of computer.
Further, main handle 30 is installed to casing 1's top, and main handle 30 rotates with casing 1 to be connected, and casing 1's top is provided with anticollision strip 29, and anticollision strip 29 is provided with four, and four anticollision strips 29 all set up structure as an organic whole with casing 1, can prevent through anticollision strip 29 that casing 1 from receiving the striking damage.
Further, access door 32 is installed to casing 1's below, and access door 32 passes through fastening screw fixed connection with casing 1, and casing 1's below is provided with main base 31, and main base 31 is provided with four, and main base 31 all sets up structure as an organic whole with casing 1, and supply socket 18 passes through fastening screw fixed connection with casing 1, and when equipment takes place to damage, accessible access door 32 gets into casing 1 inside overhauls the equipment of damage.
Further, one side of the VFD display 2 is provided with an adjusting knob 3, the adjusting knob 3 is electrically connected with the function generator 23, and signals can be continuously adjusted through the adjusting knob 3.
Further, a partition plate 25 is arranged in the housing 1, the partition plate 25 and the housing 1 are arranged into an integral structure, the function generator 23 and the calculator main board 24 are fixedly connected with the partition plate 25, and an electric device of the digital synthesis high-frequency standard signal generator is separated from a working device through the partition plate 25.
The working principle is as follows: when in use, carefully examineWhether the power supply voltage accords with the voltage working range of the instrument or not, the power supply line can be inserted into the power socket 18 of the rear panel of the instrument after the correctness is confirmed, the power supply condition of the system is carefully checked and tested, the indirect good of the system is ensured, the instrument shell 1 and all exposed metals are grounded, and when the instrument is connected with other instruments, the instrument without potential difference among the instruments is started: pressing a switch key 6 on a panel, switching on a power supply, flashing and displaying a WELCOME display for two seconds by a VFD display 2, flashing and displaying an instrument model such as F05A-DDS for one second, and entering a dot frequency function state according to the on-off state setting of the system function, wherein a waveform display area displays a current waveform-', and the frequency is 10.00000000 KHz; or entering a state before the last shutdown, and inputting data: there are two ways of data entry: one is numeric key 8 input: ten number keys are used for writing data into the display area, the writing mode is writing from left to right in sequence, [ ● ] is used for inputting decimal point, if decimal point exists in the data area, the key is not functional, [ minus ] is used for inputting minus sign, if minus sign exists in the data area, the key is pressed again to cancel the minus sign, the data is only written into the display area of the VFD display 2 by using the number keys, the data is not effective at the moment, so if wrong writing exists, the current function key can be pressed, then the function key is rewritten, the output signal of the function generator 23 is not influenced, after the input data is confirmed to be completely correct, the main menu key 5 is pressed once, the data starts to become effective, the function generator 23 outputs the signal according to the data in the display area of the VFD display 2, the input of the data can be matched with the decimal point and the main menu key 5 at will, the instrument will display the data in a unified mode, note that: the unit must be input when the number keys 8 are used for inputting data, otherwise, the input numerical value does not work, and the second type is that the adjusting knob 3 is used for inputting: the adjusting knob 3 can continuously adjust the signal and press the main menu key 5
The current flashing digit is shifted to the left or right, at this time, the adjusting knob 3 is rotated clockwise, the flashing digit is continuously increased by one and can carry towards the high position, the adjusting knob 3 is rotated counterclockwise, and the flashing digit is enabled to be flashedThe number of the instrument is continuously reduced by one, and the instrument can be borrowed to a high position, when the data is input by using the adjusting knob 3, the digit takes effect immediately after changing, the flickering digit moves leftwards without pressing the main menu key 5, the data can be roughly adjusted, the digit can be finely adjusted when moving rightwards, and the instrument can be used after the data is adjusted.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A digital synthesis high frequency standard signal generator, comprising a housing (1), characterized in that: the intelligent power distribution cabinet is characterized in that a VFD display (2), a main menu key (5), an on-off key (6), a prompt lamp (7), a digital key (8), an A output port (9) and a B output port (10) are respectively installed on the front end face of the shell (1), a function generator (23) is arranged inside the shell (1), the VFD display (2), the main menu key (5), the A output port (9) and the B output port (10) are all electrically connected with the function generator (23), a calculator main board (24) is arranged on one side of the function generator (23), the digital key (8) is electrically connected with the calculator main board (24), a power socket (18) is installed on the rear end face of the shell (1), a power distributor (26) is installed inside the shell (1), the power socket (18) is electrically connected with the power distributor (26), a voltage stabilizer (27) is arranged on one side of the power distributor (26), the top of stabiliser (27) is provided with connects electric terminal (28), distributor (26) and connect electric terminal (28) all with stabiliser (27) electric connection, function generator (23) and calculator mainboard (24) all with connect electric terminal (28) electric connection.
2. A digital synthesized high frequency standard signal generator according to claim 1, wherein: the frequency measurement device is characterized in that an external trigger input port (11), a modulation input port (12), a frequency measurement counting input port (13), a TTL output port (14) and an external standard frequency input port (15) are respectively installed on the rear end face of the shell (1), the external trigger input port (11), the modulation input port (12), the TTL output port (14) and the external standard frequency input port (15) are electrically connected with the function generator (23), and the frequency measurement counting input port (13) is electrically connected with the calculator main board (24).
3. A digital synthesized high frequency standard signal generator according to claim 1, wherein: install USB interface (20) and RS232C serial interface (21) on the rear end face of casing (1) respectively, USB interface (20) and RS232C serial interface (21) all with function generator (23) electric connection, on & off switch (6) and warning light (7) all with distributor (26) electric connection, RS232C serial interface (21) and USB interface (20) all through fastening screw and casing (1) fixed connection.
4. A digital synthesized high frequency standard signal generator according to claim 1, wherein: auxiliary handles (4) are installed on two sides of the shell (1), two auxiliary handles (4) are arranged, and the two auxiliary handles (4) are fixedly connected with the shell (1).
5. A digital synthesized high frequency standard signal generator according to claim 1, wherein: be provided with data plate (19) and vice base (22) on the rear end face of casing (1) respectively, data plate (19) and vice base (22) all set up structure as an organic whole with casing (1), vice base (22) are provided with four, distributor (26) and stabiliser (27) all with casing (1) fixed connection.
6. A digital synthesized high frequency standard signal generator according to claim 1, wherein: be provided with thermovent (16) on the rear end face of casing (1), and thermovent (16) and casing (1) set up structure as an organic whole, install dead lever (17) on the rear end face of casing (1), grid (33) are installed to one side of dead lever (17), dead lever (17) are provided with two, two dead lever (17) all with grid (33) welded connection, two dead lever (17) all through fastening screw and casing (1) fixed connection.
7. A digital synthesized high frequency standard signal generator according to claim 1, wherein: main handle (30) are installed to the top of casing (1), main handle (30) are rotated with casing (1) and are connected, the top of casing (1) is provided with anticollision strip (29), anticollision strip (29) are provided with four, four anticollision strip (29) all set up structure as an organic whole with casing (1).
8. A digital synthesized high frequency standard signal generator according to claim 1, wherein: access door (32) are installed to the below of casing (1), access door (32) pass through fastening screw fixed connection with casing (1), the below of casing (1) is provided with main base (31), main base (31) are provided with four, just main base (31) all set up structure as an organic whole with casing (1), supply socket (18) pass through fastening screw fixed connection with casing (1).
9. A digital synthesized high frequency standard signal generator according to claim 1, wherein: one side of the VFD display (2) is provided with an adjusting knob (3), and the adjusting knob (3) is electrically connected with the function generator (23).
10. A digital synthesized high frequency standard signal generator according to claim 1, wherein: the inside of casing (1) is provided with baffle (25), and baffle (25) set up structure as an organic whole with casing (1), function generator (23) and calculator mainboard (24) all with baffle (25) fixed connection.
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| CN202010524897.3A CN111697948A (en) | 2020-08-14 | 2020-08-14 | Digital synthesis high-frequency standard signal generator |
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| CN202010524897.3A CN111697948A (en) | 2020-08-14 | 2020-08-14 | Digital synthesis high-frequency standard signal generator |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120051414A1 (en) * | 2010-08-30 | 2012-03-01 | Tektronix, Inc. | Apparatus and Method for Varying Inter Symbol Interference and Bandwidth Extension Pre-Emphasis on a High Speed Digital Signal |
| CN208432646U (en) * | 2018-06-05 | 2019-01-25 | 广西电网有限责任公司桂林供电局 | A kind of repetition pulse generating device based on direct digital frequency synthesis technology |
| CN210894447U (en) * | 2019-09-16 | 2020-06-30 | 国网湖北省电力有限公司武汉供电公司 | Portable multifunctional continuous signal generator |
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2020
- 2020-08-14 CN CN202010524897.3A patent/CN111697948A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120051414A1 (en) * | 2010-08-30 | 2012-03-01 | Tektronix, Inc. | Apparatus and Method for Varying Inter Symbol Interference and Bandwidth Extension Pre-Emphasis on a High Speed Digital Signal |
| CN208432646U (en) * | 2018-06-05 | 2019-01-25 | 广西电网有限责任公司桂林供电局 | A kind of repetition pulse generating device based on direct digital frequency synthesis technology |
| CN210894447U (en) * | 2019-09-16 | 2020-06-30 | 国网湖北省电力有限公司武汉供电公司 | Portable multifunctional continuous signal generator |
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