Integrated tester line loss calibration device and method based on combined path mode

Abstract

The invention discloses an integrated tester line loss calibration device and method based on a combined path mode, and belongs to the field of communication. The device comprises an upper computer, a signal source, a power meter and a measured line loss path object, the upper computer is used for performing program control on the signal source and the power meter; the signal source is used for providing a single-tone signal; the power meter is used for measuring a power signal of the single-tone signal; the line loss path measuring object comprises a comprehensive measuring instrument and a measured terminal; the line loss path is defined as a path from any one transmitting radio frequency port of the comprehensive tester to any one receiving radio frequency port of the tested terminal or a path from any one transmitting radio frequency port of the tested terminal to any one receiving radio frequency port of the comprehensive tester. According to the invention, by using one or more sets of combiners, all the independent transmit-receive link port path line loss tables of the comprehensive measurement instrument are calibrated and traversed, the loading mode is dynamically combined and selected in the use process, the problem of dynamic configuration of the line loss table is solved, and the method is more flexible and efficient.

Description

Technical Field

[0001] The invention belongs to the field of communications, and in particular relates to a line loss calibration device and method for a comprehensive tester based on a combined path mode. Background Art

[0002] The line loss calibration method of the integrated tester in the field of traditional wireless communication systems is to calibrate the line loss port under test after combining the RF cable, attenuator, combiner and circulator, and then obtain the line loss table value by scanning the transceiver port under test with a standard signal source and power meter. Usually, the line loss value needs to be scanned again once the cable or port is replaced.

[0003] In the prior art, the common method can complete the line loss calibration for a single port of a comprehensive test instrument. However, for a comprehensive test instrument with multiple channel ports (transceiver ports may be separated), the common method will no longer be applicable in complex business scenarios such as dynamic switching of instrument channels during the test process. The present invention uses one or more sets of combiners to calibrate and traverse the line loss tables of all independent transceiver link port paths of the comprehensive test instrument, dynamically combines and selects the loading mode during reuse, solves the problem of dynamically configuring the line loss table, and is more flexible and efficient. Summary of the invention

[0004] In view of the above-mentioned technical problems existing in the prior art, the present invention proposes a line loss calibration device and method for a comprehensive measuring instrument based on a combined path method, which has a reasonable design, overcomes the shortcomings of the prior art, and has good effects.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A line loss calibration device for a comprehensive tester based on a combined path method, comprising a host computer, a signal source, a power meter and a line loss path object to be measured;

[0007] The host computer is configured to perform program control of the signal source and the power meter, calculate and obtain a series of line loss differences, and record them in the line loss file for compensation when the comprehensive tester is used;

[0008] A signal source configured to provide a single tone signal;

[0009] A power meter configured to measure a power signal of a single tone signal;

[0010] The line loss path objects include the comprehensive tester and the terminal under test;

[0011] The line loss path is defined as the path from any transmitting RF port of the comprehensive tester to any receiving RF port of the terminal under test, or the path from any transmitting RF port of the terminal under test to any receiving RF port of the comprehensive tester.

[0012] Preferably, the comprehensive tester includes 4 independent RF ports, namely OUT1, OUT2, COM1 and COM2; wherein OUT1 and OUT2 are output port types; COM1 and COM2 are input and output port types;

[0013] The terminal under test includes a transceiver combining port terminal and a transceiver separating port terminal; the transceiver combining port terminal is connected to the radio frequency port of the comprehensive tester through a combiner; the transceiver separating port terminal is connected to the radio frequency port of the comprehensive tester through a combiner.

[0014] In addition, the present invention also mentions a line loss calibration method for a comprehensive tester based on a combined path method, the method adopts a line loss calibration device for a comprehensive tester based on a combined path method as described above, and comprises the following steps: Step 1: traverse all line loss paths through a host computer to form a line loss table combination under all paths;

[0015] Step 2: Send a single tone signal through the signal source, select one of the line loss paths, and connect the input end to the signal source;

[0016] Step 3: Receive a single-tone signal through a power meter and connect it to the output end of the path selected in step 2;

[0017] Step 4: The host computer sequentially traverses the line loss difference values ​​under the frequency range, obtains and saves them as a calibration file;

[0018] Step 5: Select other line loss paths and repeat steps 1 to 4 to complete the generation of calibration files for all line loss paths.

[0019] Preferably, during use, the comprehensive tester selects a matching line loss table for loading according to the current test path combination.

[0020] Beneficial technical effects brought by the present invention:

[0021] The present invention uses one or more sets of combiners to calibrate and traverse all independent transceiver link port path line loss tables of the comprehensive testing instrument, dynamically combines and selects loading modes during use, solves the problem of dynamic configuration of line loss tables, and is more flexible and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic block diagram of the port composition of the comprehensive tester.

[0023] Figure 2 It is a schematic diagram of the transceiver combining port terminal of the present invention.

[0024] Figure 3 It is a schematic diagram of a receiving-transmitting separation port terminal of the present invention.

[0025] Figure 4This is a connection diagram of the transceiver combining terminal type of the present invention.

[0026] Figure 5 This is a connection diagram of a separate receiving and transmitting terminal type of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the line loss calibration device of the comprehensive tester based on the combined path method of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0029] The present invention designs a line loss calibration device and method for a comprehensive tester based on a combined separation path mode. By using one or more sets of combiners, the calibration and traversal of all independent transceiver link port path line loss tables of the comprehensive tester are completed. During use, the loading mode is dynamically combined and selected to solve the problem of dynamic configuration of the line loss table, which is more flexible and efficient.

[0030] Embodiment 1:

[0031] like Figure 6 As shown, a line loss calibration device for a comprehensive tester based on a combined path method includes a host computer, a signal source, a power meter and a line loss path object to be measured;

[0032] The host computer is used to perform program control of the signal source and the power meter, calculate and obtain a series of line loss differences, and record them in the line loss file for compensation when the comprehensive tester is used;

[0033] A signal source, used for providing a single tone signal;

[0034] A power meter, used to measure the power signal of a single-tone signal;

[0035] The line loss path objects include the comprehensive tester and the terminal under test;

[0036] The line loss path is defined as the path from any transmitting RF port of the comprehensive tester to any receiving RF port of the terminal under test, or the path from any transmitting RF port of the terminal under test to any receiving RF port of the comprehensive tester.

[0037] The comprehensive tester includes 4 independent RF ports, such as Figure 1 As shown, they are OUT1, OUT2, COM1 and COM2 respectively; among them, OUT1 and OUT2 are output port types; COM1 and COM2 are input and output port types;

[0038] The terminals under test include a transmitting and receiving combining port terminal and a transmitting and receiving separating port terminal; Figure 2 and Figure 3 As shown; the transceiver combining port terminal is connected to the RF port of the comprehensive tester through a combiner; Figure 4 As shown; the receiving and transmitting separation port terminal is connected to the RF port of the comprehensive tester through a combiner; Figure 5 shown.

[0039] Embodiment 2:

[0040] On the basis of the above-mentioned embodiment 1, the present invention further provides a line loss calibration method of a comprehensive tester based on a combined path method, comprising the following steps:

[0041] Step 1: Through the host computer, traverse all line loss paths to form a combination of line loss tables under all paths;

[0042] Step 2: Send a single tone signal through the signal source, select one of the line loss paths, and connect the input end to the signal source;

[0043] Step 3: Receive a single-tone signal through a power meter and connect it to the output end of the path selected in step 2;

[0044] Step 4: The host computer sequentially traverses the line loss difference values ​​under the frequency range, obtains and saves them as a calibration file;

[0045] Step 5: Select other line loss paths and repeat steps 1 to 4 to complete the generation of calibration files for all line loss paths.

[0046] When the comprehensive tester is in use, a matching line loss table is selected for loading according to the current test path combination.

[0047] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A line loss calibration device for a comprehensive measuring instrument based on a combined path method, characterized in that: Includes host computer, signal source, power meter and measured line loss path objects; The host computer is configured to perform program control of the signal source and the power meter, calculate and obtain a series of line loss differences, and record them in the line loss file for compensation when the comprehensive tester is used; A signal source configured to provide a single tone signal; A power meter configured to measure a power signal of a single tone signal; The line loss path objects include the comprehensive tester and the terminal under test; The line loss path is defined as the path from any transmitting RF port of the comprehensive tester to any receiving RF port of the terminal under test, or the path from any transmitting RF port of the terminal under test to any receiving RF port of the comprehensive tester.

2. The line loss calibration device for a comprehensive measuring instrument based on a combined path method according to claim 1 is characterized in that: The comprehensive tester includes 4 independent RF ports, namely OUT1, OUT2, COM1 and COM2; among them, OUT1 and OUT2 are output port types; COM1 and COM2 are input and output port types; The terminal under test includes a transceiver combining port terminal and a transceiver separating port terminal; the transceiver combining port terminal is connected to the radio frequency port of the comprehensive tester through a combiner; the transceiver separating port terminal is connected to the radio frequency port of the comprehensive tester through a combiner.

3. A line loss calibration method for a comprehensive tester based on a combined path method, characterized in that: The line loss calibration device of the integrated tester based on the combined path method as claimed in claim 2 comprises the following steps: Step 1: Through the host computer, traverse all line loss paths to form a combination of line loss tables under all paths; Step 2: Send a single tone signal through the signal source, select one of the line loss paths, and connect the input end to the signal source; Step 3: Receive a single-tone signal through a power meter and connect it to the output end of the path selected in step 2; Step 4: The host computer sequentially traverses the line loss difference values ​​under the frequency range, obtains and saves them as a calibration file; Step 5: Select other line loss paths and repeat steps 1 to 4 to complete the generation of calibration files for all line loss paths.

4. The line loss calibration method of the integrated tester based on the combined path method according to claim 3 is characterized in that: When the comprehensive tester is in use, a matching line loss table is selected for loading according to the current test path combination.

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