Channel switching connector for calibrating SOE tester
By designing a channel switching connector and utilizing the action of a DIP switch and a DC voltage source conversion switch to achieve level output, the problem of complex wiring during SOE tester calibration was solved, and efficient and accurate time interval parameter measurement was achieved.
Patent Information
- Application Number
- CN202423273428.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The calibration process of existing SOE testers is complicated by wiring, time-consuming and labor-intensive, and cannot directly measure the time interval of switch action signals through a time interval measuring instrument, resulting in low work efficiency.
A channel switching connector was designed, which uses first and second DIP switches to form a switching circuit and connects to a DC voltage source to convert the successive actions of the switching group into sequential level outputs. The time difference between any two levels is measured by a time interval measuring instrument to calibrate the time interval parameter of the SOE tester.
It simplifies the calibration process, improves work efficiency, ensures the accuracy and speed of measurements, and limits the loop current to the range that the SOE tester's switch contacts can withstand.
Smart Images
Figure CN223815897U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to SOE tester calibration technical field, especially a channel switching connector for calibrating SOE tester. BACKGROUND
[0002] SOE tester is a kind of instrument equipment for testing SOE record accuracy and time resolution capability, its testing process is that tester generates a group of standard switch signals (with accurate arrangement order and time interval), triggers SOE module, reaches the purpose of verifying whether SOE record is accurate and whether its time resolution capability meets the requirement by comparing the difference between SOE trigger record and standard signal of tester in sequencing and time interval.From the above, the parameter required for the measurement traceability of tester is the time interval of switch quantity successive action.The output end of tester is passive analog switch contact, and output is the action signal group (16-way ~ 1024-way) of sequential or reverse order delay trigger.Time interval parameter can be calibrated by time interval measuring instrument, but since switch action signal is passive, start and stop signal cannot be measured directly by time interval measuring instrument.
[0003] In addition, from the previous calibration process, SOE tester output end and time interval measuring instrument do not match, and time interval measuring instrument measuring end is basically BNC interface, and wiring end conversion is required during measurement, and SOE tester channel number is more, and in addition, tester has positive sequence trigger and reverse sequence trigger function, and wiring needs to be switched constantly during actual calibration, wiring combination mode is more and complex, wiring is easy to be wrong, time-consuming and laborious, and work efficiency is difficult to improve. UTILITY MODEL CONTENT
[0004] The utility model discloses a kind of channel switching connectors for calibrating SOE tester, the time interval of any two channels of SOE tester can be measured.
[0005] To achieve the above object, the technical scheme adopted by the utility model is:
[0006] The channel switching connector for calibrating an SOE tester includes a first DIP switch, a second DIP switch, an SOE tester connection socket, a first female connector, a second female connector, and a DC power socket for connecting to a DC power supply. The I-side pins of the first DIP switch are sequentially connected to the I-side pins of the second DIP switch. The II-side pins of the first DIP switch are shorted as the first output terminal, and the II-side pins of the second DIP switch are shorted as the second output terminal. The negative terminal of the DC power socket is connected to the first output terminal via the first female connector, and the negative terminal of the DC power socket is connected to the second output terminal via the second female connector, enabling connection to the CH1 and CH2 measurement terminals of the time interval measuring instrument, respectively. The positive terminal of the DC power socket is connected to the I-side pin of the first DIP switch via the SOE tester connection socket, and / or, the positive terminal of the DC power socket is connected to the first output terminal, and the positive terminal of the DC power socket is connected to the second output terminal via the SOE tester connection socket.
[0007] The SOE tester connector is a D-type interface, and the number of pins on the D-type interface is greater than or equal to the number of pins on the first DIP switch. The I-side pins of the first DIP switch are sequentially connected to the I-row pins of the D-type interface, and the II-row pins of the D-type interface are all connected to the positive terminal of the DC power socket. For example, the D-type interface is a DB37 female connector, and both the first and second DIP switches are 16-pin DIP switches. The I-side pins K1-K16 of the first DIP switch are sequentially connected to pins 1-16 of the I-row pins of the D-type interface, and the II-row pins 20-35 of the D-type interface are all connected to the positive terminal of the DC power socket.
[0008] The SOE tester uses banana plugs as its connection sockets. A first pair of banana plugs is connected between the positive terminal and the first output terminal of the DC power socket, and a second pair of banana plugs is connected between the positive terminal and the second output terminal of the DC power socket.
[0009] Both the first and second female connectors are BNC female connectors.
[0010] The DC power socket is a 5V DC power socket, which can be connected to a 5V DC power supply. The DC voltage used does not exceed the trigger level limit of the time interval measuring instrument.
[0011] As described above, the switching circuit of the SOE tester is composed of the first DIP switch and the second DIP switch. A DC voltage source is connected to the switching circuit of the tester to be calibrated, and the sequential closing process of the switch group is converted into the form of sequential output of the level. The time difference between any two levels is measured by the time interval measuring instrument, thereby realizing the calibration of the time interval parameter of the SOE tester.
[0012] Based on the foregoing scheme, in an improved scheme, the connector further comprises a first current-limiting resistor and a second current-limiting resistor, the first current-limiting resistor is connected between the positive pole of the DC power socket and the first output end, and the second current-limiting resistor is connected between the positive pole of the DC power socket and the second output end. For example, the resistance of the first current-limiting resistor and the second current-limiting resistor is 1kΩ. The current-limiting resistor used can ensure that the loop current during work does not exceed the upper limit of the current borne by the switch contact of the SOE tester.
[0013] As the above technical scheme is adopted, the utility model has the following beneficial effects:
[0014] The channel switching connector for calibrating the SOE tester of the utility model adopts the first dial switch and the second dial switch to form a switch loop of the SOE tester, inserts a direct-current voltage source in the switch loop of the tested tester, converts the process of the switch group being successively actuated and closed into the form of the levels being output in turn, and measures the time difference of any two levels generated by the time interval measuring instrument, so that the calibration of the time interval parameter of the SOE tester is realized. Moreover, the current-limiting resistor used can ensure that the loop current during work does not exceed the upper limit of the current borne by the switch contact of the SOE tester. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is the circuit diagram of the connector example 1 of the utility model. Fig. 2 It is the circuit diagram of the connector example 2 of the utility model. Fig. 3 It is the circuit diagram of the connector example 3 of the utility model.
[0016] In the drawings, 1 is a DB37 female head, 2 is a first dial switch, 3 is a second dial switch, 4 is a DC power socket, 5 is a first banana socket, 6 is a second banana socket, 7 is a third banana socket, 8 is a fourth banana socket, 9 is a first female connector, 10 is a second female connector, 11 is a first current-limiting resistor, and 12 is a second current-limiting resistor. DETAILED DESCRIPTION
[0017] EMBODIMENT
[0018] Reference Figs. 1-3As described above, the channel switching connector for calibrating SOE tester of the present application, one specific scheme is configured with D-type interface to connect SOE tester features, another specific scheme is configured with banana socket group to connect SOE tester features, another specific scheme is configured with D-type interface and banana socket group to adapt to different socket SOE tester features, etc. can be combined to form several specific schemes according to the foregoing description and actual situation, which will not be described one by one. The following will take the optimal scheme of all feature combinations as an example for description, in which DB37 female head and 16-bit double foot dial switch are selected as specific element examples, and other bit double foot dial switch and corresponding D-type interface and other elements can be selected according to actual situation in actual application, which will not be enumerated and described one by one.
[0019] Referring to Fig. 3 The channel switching connector for calibrating SOE tester of the present embodiment includes DB37 female head connector (D-type interface) 1, first dial switch 2, second dial switch 3, DC power socket 4, first socket (first banana socket) 5, second socket (second banana socket) 6, third socket (third banana socket) 7, fourth socket (fourth banana socket) 8, first female connector 9, second female connector 10, first current limiting resistor 11, second current limiting resistor 12. The first banana socket and the second banana socket are the first pair of banana sockets; the third banana socket and the fourth banana socket are the second pair of banana sockets. Among them, the first socket and the like are taken as banana socket examples, and other sockets can be adaptively replaced.
[0020] Specifically, the first dial switch 2 and the second dial switch 3 are both 16-bit double foot dial switches. The DB37 female head connector 1 is used to connect the SOE tester with the output end of DB37 connector type. The first socket 5, the second socket 6, the third socket 7, and the fourth socket 8 are used to connect the SOE tester with the output end of the conventional socket line type, wherein the first socket 5 and the second socket 6 are respectively connected to the positive and negative poles of the first trigger channel of the SOE tester, and the third socket 7 and the fourth socket 8 are respectively connected to the positive and negative poles of the other trigger channel of the SOE tester; wherein the first socket 5, the second socket 6, the third socket 7, and the fourth socket 8 are all 4mm diameter banana sockets. The first female connector 9 is used to connect the CH1 measurement end of the time interval measuring instrument, and the second female connector 10 is used to connect the CH2 measurement end of the time interval measuring instrument; wherein the first female connector 9 and the second female connector 10 are both BNC female connectors.
[0021] The positive pole of the DC power socket 4 is connected with the No.1-16 pins of the DB37 female connector 1 respectively; the No.20-35 pins of the DB37 female connector 1 are connected with the K1-K16 same side pins of the first DIP switch 2; the other side pins of the first DIP switch 2 are short-circuited and connected with the first current limiting resistor 11, and the other end of the first current limiting resistor 11 is connected to the negative pole of the DC power socket 4; the first female connector 9 is connected with the first current limiting resistor 10 in parallel, wherein the positive pole of the first female connector 9 is connected to the short-circuited side pin of the first DIP switch 2, and the negative pole of the first female connector 9 is connected to the negative pole of the DC power socket 4.
[0022] The No.20-35 pins of the DB37 female connector 1 are connected with the K1-K16 same side pins of the second DIP switch 3; the other side pins of the second DIP switch 3 are short-circuited and connected with the second current limiting resistor 12, and the other end of the second current limiting resistor 12 is connected to the negative pole of the DC power socket 4 to form a loop; the second female connector 10 is connected with the second current limiting resistor 12 in parallel, wherein the positive pole of the second female connector 10 is connected to the short-circuited side pin of the second DIP switch 3, and the negative pole of the second female connector 10 is connected to the negative pole of the DC power socket 4. The first socket 5 is connected to the positive pole of the DC power socket 4, and the second socket 6 is connected to the positive pole of the first female connector 9; the third socket 7 is connected to the positive pole of the DC power socket 4, and the fourth socket 8 is connected to the positive pole of the second BNC female connector 10.
[0023] The resistance of the first current limiting resistor 11 and the second current limiting resistor 12 is 1kΩ.
[0024] The DC power socket (standard interface) 4 is a 5V DC power socket, so as to be able to access 5V DC power supply.
[0025] In use: the first female connector 9 is electrically connected with the CH1 measuring end of the time interval measuring instrument, the second female connector 10 is electrically connected with the CH2 measuring end of the time interval measuring instrument, and the DB37 female connector 1 is electrically connected with the output end of the SOE tester.
[0026] The calibration SOE tester tests the action characteristics of each output port of the tester in different working modes. If the SOE tester is set to a time interval of 1ms, it means that the adjacent channel delay is 1ms, and the switch is closed. In the sequential trigger working mode, the timing starts from the closure of the first channel switch, 1ms later the second channel switch is closed, and 1ms later the third channel switch is closed, and so on. In the reverse trigger working mode, the timing starts from the closure of the 16th channel switch, 1ms later the 15th channel switch is closed, and 1ms later the 14th channel switch is closed, and so on. According to the above principle, combined with the channel switching connector, the operation and running process of the calibration SOE tester is described as follows:
[0027] The connector DC power socket 4 of the utility model is connected with 5V DC power supply.
[0028] When calibrating in the sequence trigger mode, the K1 switch of the first dial switch 2 and the K2 switch of the second dial switch 3 are set to "ON", and the other switches are set to "OFF"; the SOE tester outputs, at this time, the SOE tester is sequentially closed from the first channel to the sixteenth channel, since only the K1 switch of the first dial switch 2 and the K2 switch of the second dial switch 3 are closed, only the first channel and the second channel form a loop and an abrupt (0V to 5V) voltage appears; the first channel voltage is applied to the first current-limiting resistor 11, and the second channel voltage is applied to the second current-limiting resistor 12; finally, the time interval measuring instrument CH1 connected with the first female connector 9 starts timing when the voltage measured by the CH1 channel appears abruptly, and the time interval measuring instrument CH2 connected with the second female connector 10 stops timing when the voltage measured by the CH2 channel appears abruptly, and the time difference is the time interval of the first channel and the second channel of the SOE tester. Similarly, when the K2 switch of the first dial switch 2 and the K3 switch of the second dial switch 3 are set to "ON" and the other switches are set to "OFF", the measured time difference is the time interval of the second channel and the third channel of the SOE tester. In this way, when one switch of the first dial switch 2 and the second dial switch 3 is set to "ON", the time interval of the two channels corresponding to the SOE tester can be measured. For example, the selected "ON switch position of the first dial switch 2-ON switch position of the second dial switch 3" combination is K1-K3, K1-K16 and K15-K16 in sequence, and the time intervals of the first channel and the third channel, the first channel and the sixteenth channel, and the fifteenth channel and the sixteenth channel of the SOE tester are measured correspondingly.
[0029] When calibrating in the reverse sequence trigger mode, the K16 switch of the first dial switch 2 and the K15 switch of the second dial switch 3 are set to "ON", and the other switches are set to "OFF"; the SOE tester outputs, at this time, the SOE tester is sequentially closed from the sixteenth channel to the first channel, and the time interval of the sixteenth channel and the fifteenth channel of the SOE tester is measured correspondingly; other channels are combined and analogously.
[0030] As described above, the DC voltage source and the current-limiting resistor are connected in the switch loop of the instrument to be calibrated, the sequential action closing process of the switch group is converted into the form of the electrical level output in sequence, the time difference generated by any two electrical levels can be measured by the time interval measuring instrument, and the calibration of the time interval parameter of the SOE tester is realized. The DC voltage used by the connector does not exceed the trigger level limit of the time interval measuring instrument, and the resistance value of the current-limiting resistor can ensure that the loop current during work does not exceed the upper limit of the current borne by the switch contact of the SOE tester.
[0031] It should be noted that the above examples of the embodiments can be combined with one or more than two according to actual needs, and multiple instances adopt a set of combined technical features, which will not be described one by one here.
[0032] The above description is a detailed description and example of the preferred embodiments of the present application, but these descriptions are not intended to limit the scope of the present application. Any equivalent changes or modifications made under the technical guidance of the present application should be within the scope of the patent protection of the present application.
Claims
1. A channel switch connector for calibrating a SOE tester, characterized by: The first dial switch, the second dial switch, the SOE tester connecting socket, the first female connector, the second female connector and the DC power supply socket connected with the direct current power supply; the I side pin of the first dial switch is connected to the I side pin of the second dial switch in sequence, the II side pin of the first dial switch is short-circuited as a first output end, and the II side pin of the second dial switch is short-circuited as a second output end; the first female connector is connected between the negative pole of the DC power supply socket and the first output end, and the second female connector is connected between the negative pole of the DC power supply socket and the second output end, so as to be connected with the CH1 measurement end and the CH2 measurement end of the time interval measuring instrument respectively; the SOE tester connecting socket is connected between the positive pole of the DC power supply socket and the I side pin of the first dial switch, and / or the SOE tester connecting socket is connected between the positive pole of the DC power supply socket and the first output end and between the positive pole of the DC power supply socket and the second output end respectively.
2. The channel switch connector for calibrating a SOE tester of claim 1, wherein: The SOE tester connecting socket is a D-type interface, and the number of pins of the D-type interface is greater than or equal to the number of pins of the first dial switch, the I side pin of the first dial switch is connected to the I row pin of the D-type interface in sequence, and the II row pin of the D-type interface is connected to the positive pole of the DC power supply socket.
3. The channel switch connector for calibrating a SOE tester of claim 2, wherein: The D-type interface is a DB37 female head, the first dial switch and the second dial switch are both 16-bit double-pin dial switches, the I side pin K1-pin K16 of the first dial switch is connected to the I row pin 1-pin 16 of the D-type interface in sequence, and the II row pin 20-pin 35 of the D-type interface is connected to the positive pole of the DC power supply socket.
4. The channel switch connector for calibrating a SOE tester of claim 1, wherein: The SOE tester connecting socket is a banana socket, and the first pair of banana sockets is arranged between the positive pole of the DC power supply socket and the first output end, and the second pair of banana sockets is arranged between the positive pole of the DC power supply socket and the second output end.
5. The channel switch connector for calibrating a SOE tester of claim 1, wherein: Further comprising a first current limiting resistor and a second current limiting resistor, the first current limiting resistor is connected between the positive pole of the DC power supply socket and the first output end, and the second current limiting resistor is connected between the positive pole of the DC power supply socket and the second output end.
6. The channel switch connector for calibrating a SOE tester of claim 5, wherein: The resistance of the first current limiting resistor and the second current limiting resistor is 1kΩ.
7. The channel switch connector for calibrating a SOE tester of claim 1, wherein: The first female connector and the second female connector are both BNC female connectors.
8. The channel switch connector for calibrating a SOE tester of claim 1, wherein: The DC power supply socket is a 5V direct current power supply socket, so as to be connected with the 5V direct current power supply.