CN102435797A - Wireless probe for oscilloscope - Google Patents
Wireless probe for oscilloscope Download PDFInfo
- Publication number
- CN102435797A CN102435797A CN2011102929729A CN201110292972A CN102435797A CN 102435797 A CN102435797 A CN 102435797A CN 2011102929729 A CN2011102929729 A CN 2011102929729A CN 201110292972 A CN201110292972 A CN 201110292972A CN 102435797 A CN102435797 A CN 102435797A
- Authority
- CN
- China
- Prior art keywords
- sending module
- receiver module
- circuit
- module
- analog quantity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides a wireless probe for an oscilloscope. The wireless probe comprises a conventional wired probe, a sending module, a receiving module and a connecting cable, wherein the conventional wired probe and the sending module are in wired connection; the receiving module and the connecting cable are in wired connection; and the wireless probe is characterized in that the sending module and the receiving module are in wireless connection. In the wireless probe for the oscilloscope provided by the invention, the signal transmission is free from the limitation of cable length to a certain degree, so that position relation among the oscilloscope, a measuring person and a measured signal source is relatively flexible; when a plurality of signal sources are measured, the distance among the signal sources can be large; and the sending module and the receiving module are free from physical connection, so that the measured signal source can move relative to the body of the oscilloscope.
Description
Technical field
The present invention relates to the oscillograph technical field, a kind of oscillograph wireless probe of saying so more specifically.
Background technology
Oscillograph is a kind of broad-spectrum electronic measuring instrument, and it can be transformed into image so that people analyze with electric signal, and oscilloprobe is oscillographic vitals, and oscillographic measurement is used has fundamental influence.Document " principle of oscilloprobe with select for use " (the instrumentation technology, 2007,27 (3): 49-50) said: conventional oscilloprobe is made up of probe, compensating circuit, lead, joint; Its prominent feature is to connect to showing as cable the oscillograph body interface from measured signal, that is wired probe.
The following deficiency that the wired probe of oscillograph exists in actual measurement: 1) probe cable limited length, tester and oscillograph must be near measured signals; When 2) a plurality of signals being measured simultaneously, require signal source concentrated relatively; 3) measured signal source and oscillograph body will keep static relatively, otherwise probe cable might twine, twist disconnected danger.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that exists in the prior art, a kind of oscillograph wireless probe is provided.
The present invention realizes through following technical scheme:
A kind of oscillograph wireless probe; Comprise conventional wired probe, sending module, receiver module and stube cable, wherein, conventional wired probe and sending module mutually between wired connection; Wired connection between receiver module and the stube cable, wireless connections between said receiver module and the sending module.
Said sending module comprises: sending module circuit, transmitting antenna, sending module housing, sending module analog quantity BNC input adapter; Wherein, The sending module circuit is arranged in the sending module housing; Transmitting antenna is installed in the sending module case top and is connected with the sending module circuit; Sending module analog quantity BNC input adapter is installed in the sending module outside and is connected with the sending module circuit, and sending module is connected with conventional wired probe through sending module analog quantity BNC input adapter is outside.
Said sending module circuit comprises: sending module wireless transmission/reception chip, sending module single chip circuit and sending module auxiliary circuit; Wherein, Sending module wireless transmission/reception chip is connected with the sending module single chip circuit with transmitting antenna respectively; The sending module single chip circuit is connected with the sending module auxiliary circuit, and sending module analog quantity BNC input adapter is inner to be connected with the sending module single chip circuit.
Said sending module single chip circuit comprises: digital quantity/analog quantity converting unit and sending module CPU; Wherein, Sending module analog quantity BNC input adapter is inner to be connected with digital quantity/analog quantity converting unit, and digital quantity/analog quantity converting unit is connected and is connected with sending module CPU.
Said receiver module comprises: receiver module circuit, receiving antenna, receiver module housing, receiver module analog quantity BNC out splice going splice; Wherein, The receiver module circuit is arranged in the receiver module housing; Receiving antenna is installed in the receiver module case top and is connected with the receiver module circuit; Receiver module analog quantity BNC out splice going splice is installed in the receiver module outside and is connected with the receiver module circuit, and receiver module is connected with stube cable through receiver module analog quantity BNC out splice going splice is outside.
Said receiver module circuit comprises: receiver module wireless transmission/reception chip, receiver module single chip circuit and receiver module auxiliary circuit; Wherein, Receiver module wireless transmission/reception chip is connected with the receiver module single chip circuit with receiving antenna respectively; The receiver module single chip circuit is connected with the receiver module auxiliary circuit, and receiver module analog quantity BNC out splice going splice is inner to be connected with the receiver module single chip circuit.
Said receiver module single chip circuit comprises: receiver module CPU and analog quantity/digital quantity converting unit; Wherein, Receiver module CPU is connected with analog quantity/digital quantity converting unit, and analog quantity/digital quantity converting unit is connected with receiver module analog quantity BNC out splice going splice inside.
Said single chip circuit is the wireless transmission single chip circuit, and said auxiliary circuit provides crystal oscillator signal or power supply signal.
The wired probe of said routine comprises conventional wired probe B NC joint, compensating circuit, shielded conductor, probe and ground clamp; Wherein, Probe is connected with compensating circuit through shielded conductor with ground clamp; Compensating circuit is connected with conventional wired probe B NC joint, and conventional wired probe B NC joint is connected with sending module analog quantity BNC input adapter outside.
A kind of wireless transmission method that utilizes the oscillograph wireless probe, said oscillograph wireless probe carries out wireless transmission through sending module and receiver module:
-sending module; With the wired probe detection of routine to the simulating signal sent of measured signal source be transferred to digital quantity/analog quantity converting unit through sending module analog quantity BNC input adapter; And be digital signal with this analog signal conversion through digital quantity/analog quantity converting unit; Through sending module CPU coding, the digital signal after will encoding then sends to receiver module through sending module wireless transmission/reception chip and transmitting antenna with the digital signal after the conversion.
-receiver module; Receive the digital signal that sending module sends through receiver module wireless transmission/reception chip and receiving antenna; This digital signal is decoded through receiver module CPU; Convert decoded digital signal into simulating signal through analog quantity/digital quantity converting unit, the analog signal transmission after will changing through receiver module analog quantity BNC out splice going splice then is to the oscillograph body.
The beneficial effect that technical scheme of the present invention is brought:
1) oscillograph body and tester can quite grow a segment distance away from the measured signal source;
2) can use the signal of a plurality of apart from each other signal sources of oscilloscope measurement;
3) signal source relatively the oscillograph body do certain relative motion.
Description of drawings
Fig. 1 is an oscillograph wireless probe schematic diagram;
Fig. 2 is oscillograph wireless probe circuit theory diagrams, and wherein (a) is oscillograph wireless probe sending module circuit theory diagrams, (b) is oscillograph wireless probe receiver module circuit theory diagrams;
Fig. 3 is an oscillograph wireless probe sending module program flow diagram;
Fig. 4 is an oscillograph wireless probe receiver module program flow diagram.
Among the figure: 1 measured signal source, 2 conventional wired probes, 3 sending modules, 4 receiver modules, 5 stube cables; 6 oscillograph bodies, 11 measured signal seedbed line ends, 12 measured signal source signal ends, 21 probes, 22 ground clamps; 23 shielded conductors, 24 compensating circuits, 25 conventional wired probe B NC joints, 31 sending module circuit, 32 transmitting antennas; 33 sending module housings, 34 sending module analog quantity BNC input adapters, 311 sending module wireless transmission/reception chips, 312 sending module single chip circuits; 313 sending module auxiliary circuits, 3121 digital quantities/analog quantity converting unit, 3122 sending module CPU, 41 receiver module circuit; 42 receiving antennas, 43 receiver module housings, 44 receiver module analog quantity BNC out splice going splices, 411 receiver module wireless transmission/reception chips; 412 receiver module single chip circuits, 413 receiver module auxiliary circuits, 4121 receiver module CPU, 4122 analog quantitys/digital quantity converting unit; 51 stube cable BNC input adapters, 52 stube cable shielded conductors, 53 stube cable BNC out splice going splices, 61 oscillograph body BNC input adapters.
Embodiment
Present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to present embodiment being to implement under the prerequisite with technical scheme of the present invention.
As shown in Figure 1, the oscillograph wireless probe comprises: conventional wired probe 2, sending module 3, receiver module 4 and stube cable 5.The wired probe 2 of said routine is connected on the sending module analog quantity BNC input adapter 34 of sending module 3 through conventional wired probe B NC joint 25; The receiver module analog quantity BNC out splice going splice 44 of receiver module 4 is connected with the stube cable BNC input adapter 51 of stube cable 5, and the stube cable BNC out splice going splice 53 of stube cable 5 is connected with the oscillograph body BNC input adapter of oscillograph body 6.Wireless connections between sending module 3 and the receiver module 4, the signal that send in measured signal source 1 after changing between sending module 3 and receiver module 4 wireless transmission.
Conventional wired probe 2 comprises 21 probes, 22 ground clamps, 23 shielded conductors, 24 compensating circuits, 25 conventional wired probe B NC joints.Probe 21 is connected with compensating circuit 24 through shielded conductor 23 with ground clamp 22, and compensating circuit 21 is connected with the wired probe B NC joint 25 of rule.
Like Fig. 2 (a) with (b); Sending module 3 comprises: sending module circuit 31, transmitting antenna 32, sending module housing 33, sending module analog quantity BNC input adapter 34; Wherein, Sending module circuit 31 is arranged in the sending module housing 33; Transmitting antenna 32 is installed in sending module housing 33 tops and is connected with sending module circuit 31, and sending module analog quantity BNC input adapter 34 is installed in sending module housing 33 outsides and is connected with sending module circuit 31, and sending module 3 is connected with conventional wired probe B NC joint 25 of conventional wired probe 2 through sending module analog quantity BNC input adapter 34 outsides.
Sending module circuit 31 comprises: sending module wireless transmission/reception chip 311, sending module single chip circuit 312 and sending module auxiliary circuit 313; Wherein, Sending module wireless transmission/reception chip 311 is connected with sending module single chip circuit 312 with transmitting antenna 32 respectively; Sending module single chip circuit 312 is connected with sending module auxiliary circuit 313, sending module analog quantity BNC input adapter 34 inner be connected with sending module single chip circuit 312.
Sending module single chip circuit 312 comprises: digital quantity/analog quantity converting unit 3121 and sending module CPU3122; Wherein, Sending module analog quantity BNC input adapter 34 inside are connected with digital quantity/analog quantity converting unit 3121, and digital quantity/analog quantity converting unit 3121 is connected with sending module CPU3122.
Receiver module 4 comprises: receiver module circuit 41, receiving antenna 42, receiver module housing 43, receiver module analog quantity BNC out splice going splice 44; Wherein, Receiver module circuit 41 is arranged in the receiver module housing 43; Receiving antenna 42 is installed in receiver module housing 43 tops and is connected with receiver module circuit 41; Receiver module analog quantity BNC out splice going splice 44 is installed in receiver module housing 43 outsides and is connected with receiver module circuit 41, and receiver module 4 is connected with stube cable 5 stube cable BNC input adapters 51 through receiver module analog quantity BNC out splice going splice 44 outsides.
Receiver module single chip circuit 412 comprises: receiver module CPU4121 and analog quantity/digital quantity converting unit 4122; Wherein, Receiver module CPU4121 is connected with analog quantity/digital quantity converting unit 4122, and analog quantity/digital quantity converting unit 4122 is connected with receiver module analog quantity BNC out splice going splice 44 inside.
Utilize the wireless transmission method of oscillograph wireless probe, carry out wireless transmission through sending module wireless transmission/reception chip 311, receiver module wireless transmission/reception chip 411, transmitting antenna 32 and receiving antenna 42 between sending module 3 and the receiver module 4:
-sending module 3; The simulating signal that send in the measured signal source 1 that the wired probe 2 of routine is detected is transferred to digital quantity/analog quantity converting unit 3121 through sending module analog quantity BNC input adapter; Sending module CPU3122 starts digital quantity/analog quantity converting unit 3121; With this analog signal conversion is digital signal; After digital signal after the conversion press the wireless transmission protocol coding through sending module CPU3122, write sending module wireless transmission/reception chip 3111, startup sending module wireless transmission/reception chip 311 sends to receiver module 4 through transmitting antenna 32.
-receiver module 4; Receive the digital signal that sending module 3 sends through receiving antenna 42; And importing receiver module wireless transmission/reception chip 411; Receiver module CPU4121 is from receiving module wireless transmission/reception chip 411 and read in this digital signal and decoding according to wireless transmission protocol; Decoded digital signal is write analog quantity/digital quantity converting unit 4122 convert simulating signal into, the analog signal transmission after will changing through receiver module analog quantity BNC out splice going splice 44 then is to oscillograph body BNC input adapter 61 input oscillograph bodies 6.
Sending module auxiliary circuit 313 provides signals such as crystal oscillator, power supply with receiver module auxiliary circuit 413.
As shown in Figure 3, sending module 3 is pressed following works: after sending module 3 starts, at first carry out initialization, detection has or not regularly look-at-me: if do not have, continuation detects; If have, start digital quantity/analog quantity converting unit 3121 and carry out digital quantity/analog quantity conversion; Wait for EOC, data are read in, write sending module wireless transmission/reception chip 311 and start wireless transmission behind the sending module CPU3122 coding; Whether determining program will finish, if termination condition is set up, withdraws from journey; Otherwise continue to detect regularly look-at-me.
As shown in Figure 4, receiver module 4 is pressed following works: after receiver module 4 starts, at first carry out initialization, detection has or not the wireless receiving look-at-me: if do not have, continue detection; If have; Receiver module CPU4121 reads in data from receiver module wireless transmission/reception chip 411; The measured signal digital quantity is obtained in decoding; Write analog quantity/digital quantity converting unit 4122 and start analog quantitys/digital quantities conversion, institute's analog quantity that produces is exported through receiver module analog quantity BNC out splice going splice 44; Whether determining program will finish, if termination condition is set up, withdraws from journey; Otherwise continue to detect the wireless receiving look-at-me.
The oscillograph wireless probe course of work of the present invention is following: the signal in measured signal source 1 is input to sending module 3 through the wired probe 2 of routine; The sending module circuit 31 of sending module 3 is a digital signal with analog signal conversion, and the coding back is by 32 emissions of sending module antenna; Receiver module antenna 42 imports the receiver module circuit 41 of receiver module 4 with the digital signal of sending module 3 emission, changes after the decoding that simulating signal sends to receiver module analog quantity BNC out splice going splice 44 after stube cable 5 input oscillograph bodies 6 into again.
Oscillograph wireless probe provided by the invention, signal be transmitted in the restriction of having broken away from cable length to a certain extent, therefore, the position between oscillograph and tester and the measured signal source is relatively freer; Simultaneously, when a plurality of signal sources were measured, that also can disperse between signal source was far away.In addition, owing to do not have physical connection between sending module and receiver module, the oscillograph body motion relatively of measured signal source.
Claims (10)
1. oscillograph wireless probe; Comprise conventional wired probe, sending module, receiver module and stube cable; Wherein, conventional wired probe and sending module mutually between wired connection, wired connection between receiver module and the stube cable; It is characterized in that wireless connections between said receiver module and the sending module.
2. oscillograph wireless probe according to claim 1; It is characterized in that; Said sending module comprises: sending module circuit, transmitting antenna, sending module housing, sending module analog quantity BNC input adapter; Wherein, the sending module circuit is arranged in the sending module housing, and transmitting antenna is installed in the sending module case top and is connected with the sending module circuit; Sending module analog quantity BNC input adapter is installed in the sending module outside and is connected with the sending module circuit, and sending module is connected with conventional wired probe through sending module analog quantity BNC input adapter is outside.
3. oscillograph wireless probe according to claim 2; It is characterized in that; Said sending module circuit comprises: sending module wireless transmission/reception chip, sending module single chip circuit and sending module auxiliary circuit; Wherein, Sending module wireless transmission/reception chip is connected with the sending module single chip circuit with transmitting antenna respectively, and the sending module single chip circuit is connected with the sending module auxiliary circuit, and sending module analog quantity BNC input adapter is inner to be connected with the sending module single chip circuit.
4. oscillograph wireless probe according to claim 3; It is characterized in that; Said sending module single chip circuit comprises: digital quantity/analog quantity converting unit and sending module CPU; Wherein, sending module analog quantity BNC input adapter is inner to be connected with digital quantity/analog quantity converting unit, and digital quantity/analog quantity converting unit is connected and is connected with sending module CPU.
5. oscillograph wireless probe according to claim 1; It is characterized in that; Said receiver module comprises: receiver module circuit, receiving antenna, receiver module housing, receiver module analog quantity BNC out splice going splice; Wherein, the receiver module circuit is arranged in the receiver module housing, and receiving antenna is installed in the receiver module case top and is connected with the receiver module circuit; Receiver module analog quantity BNC out splice going splice is installed in the receiver module outside and is connected with the receiver module circuit, and receiver module is connected with stube cable through receiver module analog quantity BNC out splice going splice is outside.
6. oscillograph wireless probe according to claim 5; It is characterized in that; Said receiver module circuit comprises: receiver module wireless transmission/reception chip, receiver module single chip circuit and receiver module auxiliary circuit; Wherein, Receiver module wireless transmission/reception chip is connected with the receiver module single chip circuit with receiving antenna respectively, and the receiver module single chip circuit is connected with the receiver module auxiliary circuit, and receiver module analog quantity BNC out splice going splice is inner to be connected with the receiver module single chip circuit.
7. oscillograph wireless probe according to claim 6; It is characterized in that; Said receiver module single chip circuit comprises: receiver module CPU and analog quantity/digital quantity converting unit; Wherein, receiver module CPU is connected with analog quantity/digital quantity converting unit, and analog quantity/digital quantity converting unit is connected with receiver module analog quantity BNC out splice going splice inside.
8. according to each described oscillograph wireless probe in the claim 3,4,6 or 7, it is characterized in that said single chip circuit is the wireless transmission single chip circuit, said auxiliary circuit provides crystal oscillator signal or power supply signal.
9. oscillograph wireless probe according to claim 1; It is characterized in that; The wired probe of said routine comprises conventional wired probe B NC joint, compensating circuit, shielded conductor, probe and ground clamp, and wherein, probe is connected with compensating circuit through shielded conductor with ground clamp; Compensating circuit is connected with conventional wired probe B NC joint, and conventional wired probe B NC joint is connected with sending module analog quantity BNC input adapter outside.
10. according to oscillograph wireless probe as claimed in claim 1, it is characterized in that said oscillograph wireless probe carries out wireless transmission through sending module and receiver module:
-sending module; With the wired probe detection of routine to the simulating signal sent of measured signal source be transferred to digital quantity/analog quantity converting unit through sending module analog quantity BNC input adapter; And be digital signal with this analog signal conversion through digital quantity/analog quantity converting unit; Through sending module CPU coding, the digital signal after will encoding then sends to receiver module through sending module wireless transmission/reception chip and transmitting antenna with the digital signal after the conversion; Receiver module; Receive the digital signal that sending module sends through receiver module wireless transmission/reception chip and receiving antenna; This digital signal is decoded through receiver module CPU; Convert decoded digital signal into simulating signal through analog quantity/digital quantity converting unit, the analog signal transmission after will changing through receiver module analog quantity BNC out splice going splice then is to the oscillograph body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102929729A CN102435797A (en) | 2011-09-29 | 2011-09-29 | Wireless probe for oscilloscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102929729A CN102435797A (en) | 2011-09-29 | 2011-09-29 | Wireless probe for oscilloscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102435797A true CN102435797A (en) | 2012-05-02 |
Family
ID=45983956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102929729A Pending CN102435797A (en) | 2011-09-29 | 2011-09-29 | Wireless probe for oscilloscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102435797A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808028A (en) * | 2015-04-30 | 2015-07-29 | 深圳市知用电子有限公司 | Oscilloscope intelligent active probe |
| CN109471016A (en) * | 2018-11-09 | 2019-03-15 | 德淮半导体有限公司 | Probe card, wafer, wireless test system and method |
| CN115128330A (en) * | 2022-08-25 | 2022-09-30 | 国网山东省电力公司高青县供电公司 | Handheld electronic device for electrical variable measurement and electrical variable measurement method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566088A (en) * | 1994-06-13 | 1996-10-15 | Motorola, Inc. | Modular radio test system and method |
| WO2005036190A1 (en) * | 2003-09-15 | 2005-04-21 | Rambus Inc. | Method and apparatus for performing testing of interconnections |
| US20050262396A1 (en) * | 2004-04-26 | 2005-11-24 | Agilent Technologies, Inc | Apparatus and method for automated test setup |
| CN101067892A (en) * | 2007-05-31 | 2007-11-07 | 宁波大学 | Experimental education auxiliary management system |
| CN101514998A (en) * | 2008-02-22 | 2009-08-26 | 安捷伦科技有限公司 | Probe device having a clip-on wireless system for extending probe tip functionality |
| CN201302581Y (en) * | 2008-09-24 | 2009-09-02 | 王悦 | Probe device |
-
2011
- 2011-09-29 CN CN2011102929729A patent/CN102435797A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566088A (en) * | 1994-06-13 | 1996-10-15 | Motorola, Inc. | Modular radio test system and method |
| WO2005036190A1 (en) * | 2003-09-15 | 2005-04-21 | Rambus Inc. | Method and apparatus for performing testing of interconnections |
| US20050262396A1 (en) * | 2004-04-26 | 2005-11-24 | Agilent Technologies, Inc | Apparatus and method for automated test setup |
| CN101067892A (en) * | 2007-05-31 | 2007-11-07 | 宁波大学 | Experimental education auxiliary management system |
| CN101514998A (en) * | 2008-02-22 | 2009-08-26 | 安捷伦科技有限公司 | Probe device having a clip-on wireless system for extending probe tip functionality |
| CN201302581Y (en) * | 2008-09-24 | 2009-09-02 | 王悦 | Probe device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808028A (en) * | 2015-04-30 | 2015-07-29 | 深圳市知用电子有限公司 | Oscilloscope intelligent active probe |
| CN104808028B (en) * | 2015-04-30 | 2017-12-19 | 深圳市知用电子有限公司 | A kind of oscillograph intellectuality active probe |
| CN109471016A (en) * | 2018-11-09 | 2019-03-15 | 德淮半导体有限公司 | Probe card, wafer, wireless test system and method |
| CN115128330A (en) * | 2022-08-25 | 2022-09-30 | 国网山东省电力公司高青县供电公司 | Handheld electronic device for electrical variable measurement and electrical variable measurement method |
| CN115128330B (en) * | 2022-08-25 | 2022-11-25 | 国网山东省电力公司高青县供电公司 | Handheld electronic device for electrical variable measurement and electrical variable measurement method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102435797A (en) | Wireless probe for oscilloscope | |
| CN102928711A (en) | Broadband synchronous online measurement system for conductive electromagnetic disturbance of engineering machinery | |
| CN201680847U (en) | Interface measurement device capable of identifying sensor types | |
| CN103105159B (en) | Differential settlement monitoring instrument for high-speed rail | |
| CN105915404B (en) | The test macro of SpaceWire network link signal quality and the evaluation method of signal quality | |
| CN203241515U (en) | Logic analyser based on PC | |
| CN101452048B (en) | Integrated circuit chip temperature test device and method | |
| CN201126458Y (en) | Power line detection apparatus | |
| CN103308843A (en) | Chip with receiver test function and circuit board with receiver test function | |
| CN102411528A (en) | MXM (Mobile PCI-Express Module)-interface testing-connecting card and testing system provided with same | |
| CN203838331U (en) | Binding post box and connector of electric energy meter | |
| CN202975071U (en) | Wireless active probe of oscilloscope | |
| CN202948052U (en) | Digital voltammeter based on measuring chip | |
| CN203489833U (en) | Digital display measuring tool with wireless transmission function | |
| CN101025855A (en) | Blade measured data digitalized processing method and device | |
| CN219715566U (en) | Intelligent probe for oscilloscope and oscilloscope | |
| CN101093250A (en) | Real time online method and device for monitoring and measuring error of high-voltage current measured through mutual inductance | |
| CN104301035A (en) | Detection device for testing SFP | |
| CN203838332U (en) | Communication adapter and connector of electric energy meter | |
| CN217632400U (en) | Flaw detection and hole diameter combined logging system | |
| CN210745563U (en) | Audio testing device | |
| CN203249938U (en) | Communication circuit of electrical measuring meters | |
| CN215871846U (en) | Testing device | |
| CN208351696U (en) | Gas meter, flow meter remote data acquisition device | |
| CN217787385U (en) | Digital towing line array debugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120502 |