A VHF-2100 transceiver tester

Abstract

The utility model discloses a kind of VHF-2100 transceiver tester, belong to civil aviation control technology field.The tester is composed of panel and back plate closed box body: square test interface with key is prevented to be inserted reversely, circular power interface with thread locking, tabular discrete control and indication unit, 360 ° shielding ARINC 429 interface and the audio / data output circular socket of quick replaceable load are integrated on panel;Power connector and T1200A / B connector are correspondingly arranged on back plate;All connectors, switches, indicator light are welded one by one through box body internal wiring harness, form static integration structure.The utility model can complete the function test, fault location and performance verification of VHF-2100 transceiver without additional adapter, with reliable connection, strong anti-interference ability, maintenance convenient characteristics, can significantly improve civil aviation maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of civil aviation measurement and control technology, and in particular to a VHF-2100 transceiver tester. Background Technology

[0002] The airborne VHF-2100 / VHF-2200 transceiver is a core device for air-to-ground voice and data communication within the 118–137MHz frequency band, and its performance directly affects the reliability of air traffic control (ATC) and airline operations control (AOC). In traditional maintenance methods, testing relies on in-situ aircraft connections or temporary assembly of loose-wiring fixtures, which has the following shortcomings:

[0003] Interface mismatch – The transceiver uses a dedicated square connector, but there is a lack of standard adapters on site, and repeated soldering can easily damage the pins;

[0004] Poor connection reliability – temporary loose wires lack a locking structure and are prone to loosening during vibration or pulling, leading to misdiagnosis of faults;

[0005] Low testing efficiency – discrete signals, ARINC 429, and audio / data signals require separate wiring, lack of centralized indication, and long troubleshooting cycle;

[0006] Weak anti-interference capability – Without shielding measures, the external radio frequency environment is prone to crosstalk to the ARINC 429 differential signal, affecting the accuracy of test results;

[0007] The load replacement is cumbersome – audio and data outputs require external independent load boxes, which are bulky and require rewiring when changing impedances.

[0008] Therefore, there is an urgent need for a portable testing device that is compact, has standard interfaces, reliable connections, and high anti-interference capabilities to meet the pressing needs of airlines and maintenance bases for rapid and accurate testing of VHF-2100 transceivers. Utility Model Content

[0009] The purpose of this invention is to provide a VHF-2100 transceiver tester, thereby solving the aforementioned problems existing in the prior art.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0011] A VHF-2100 transceiver tester, comprising a front panel and a rear panel;

[0012] The panel is rectangular, and the following components are fixed from top to bottom:

[0013] The test interface is a square connector used to connect with the corresponding square connector of the airborne VHF-2100 transceiver.

[0014] The power interface is a rectangular area, in which a dedicated power connector, a power switch, and a switch indicator light are installed. The three are arranged in sequence along the same horizontal axis. The output end of the dedicated power connector is soldered to the power harness inside the enclosure.

[0015] The discrete control and indication unit is arranged in rows and columns. Each row consists of discrete switches, discrete indicator lights and test sockets arranged in a horizontal order. The common solder pin of each row is soldered to the discrete signal harness inside the enclosure.

[0016] The ARINC 429 interface is a shielded differential connector. Its flange is fastened to a rectangular opening on the panel with screws, and its pins are soldered to the ARINC 429 wiring harness inside the enclosure.

[0017] The audio and data output load interface is in the form of a round socket. The socket flange is locked to the round opening on the panel by a nut, and its solder feet are welded to the load resistor wire harness inside the cabinet.

[0018] The back panel is a rectangular plate parallel to the front panel, and is fixed with the following components in sequence:

[0019] The power connector is a rectangular power socket. Its flange is fastened to the rectangular opening on the rear panel with screws. Its solder feet are soldered to the power harness inside the enclosure and are electrically connected to the power interface on the front panel through the harness.

[0020] The T1200A / B connector is a multi-core rectangular connector. Its flange is fastened to the rectangular opening on the rear panel with screws. Its solder feet are soldered to the test harness inside the housing and are electrically connected to the test interface on the front panel through the harness.

[0021] The front panel and the back panel are connected by four rectangular aluminum profile columns to form a closed enclosure.

[0022] In some specific embodiments, the center line of the square connector of the test interface coincides with the vertical center line of the panel, and its square socket faces the outside of the enclosure, forming a unique plugging direction.

[0023] In some specific embodiments, the dedicated power connector, power switch, and switch indicator light in the power interface are arranged at equal intervals along the same horizontal axis on the panel, and the center lines of the three are all parallel to the horizontal center line of the panel.

[0024] In some specific embodiments, the center lines of each row of discrete switches, discrete indicator lights and test sockets of the discrete control and indication unit are collinear, and the rows are arranged at equal intervals in the vertical direction to form a matrix static layout.

[0025] In some specific embodiments, the center line of the shielded differential connector of the ARINC 429 interface and the center line of the circular socket of the audio and data output load interface are at the same horizontal level, and the two are arranged symmetrically on the panel.

[0026] In some specific embodiments, the power connector and the T1200A / B connector on the rear panel are arranged vertically, and the center lines of both coincide with the vertical center line of the rear panel, forming a static layout with vertical alignment.

[0027] In some specific embodiments, the square connector of the test interface is an error-proof structure, with a convex key on its mating surface, corresponding to the groove inside the VHF-2100 transceiver connector, forming a unique mating direction to avoid reverse insertion.

[0028] In some specific embodiments, the dedicated power connector for the power interface is a circular bayonet connector with threaded locking, and its locking nut can be automatically positioned after being screwed on to prevent loosening due to vibration during the test.

[0029] The test socket of the discrete control and indication unit is a shielded coaxial structure. Its outer shell is connected to the ground wire of the box, and the internal contacts are soldered to the discrete signal lines to form an anti-interference test channel.

[0030] The ARINC 429 interface shielded differential connector housing has a 360° full-circumference crimping ring, which is in close contact with the metal panel of the housing to form a continuous RF shielding cavity;

[0031] The circular socket for audio and data output load interfaces integrates a replaceable load resistor module. The module is fixed to the cabinet by a clip inside the socket, allowing for quick replacement of loads with different impedances without tools.

[0032] In some specific embodiments, the panel is a rectangular aluminum alloy plate with dimensions of 280mm±0.2mm along the length direction, 190mm±0.2mm along the width direction, and a thickness of 3mm±0.1mm; the square connector of the test interface has dimensions of 27mm×27mm, with its center distance from the left edge of the panel being 70mm±0.1mm and from the top edge being 50mm±0.1mm, and is fastened to the panel by four M3 cylindrical head screws;

[0033] The dedicated power connector is a two-core circular bayonet connector with an outer diameter of 20mm±0.1mm. The center of the mounting hole is 140mm±0.1mm from the left edge of the panel and 90mm±0.1mm from the top edge. The power switch is a single-pole single-throw rocker switch with dimensions of 30mm×25mm. The center distance between the power switch and the dedicated power connector is 40mm±0.1mm. The switch indicator light is a circular LED with a diameter of 12mm±0.1mm. The center distance between the LED and the power switch is 35mm±0.1mm. All three are arranged in a straight line on the same horizontal axis.

[0034] In some specific embodiments, the back panel is a rectangular aluminum alloy plate with the same external dimensions as the front panel, namely 280mm±0.2mm×190mm±0.2mm×3mm±0.1mm; the power connector is a three-position rectangular power socket with external dimensions of 36mm×21mm, and its center distance from the lower edge of the back panel is 50mm±0.1mm, and its distance from the left edge is 140mm±0.1mm; the T1200A / B connector is a 25-pin rectangular connector with external dimensions of 39mm×13mm, and its center distance from the center of the power connector is 60mm±0.1mm, and the center lines of both coincide with the vertical center line of the back panel.

[0035] The beneficial effects of this utility model are:

[0036] High connection reliability: The test interface adopts a square connector with a raised key, and forms a front and rear dual interface scheme with the T1200A / B connector, realizing the completion of all signal paths with one plug-in, avoiding repeated soldering and misplugging.

[0037] Anti-loosening design: The power interface uses a threaded locking round bayonet connector, and the discrete switches and indicator lights are integrated into the panel. It can maintain stable contact even in vibration environments, reducing the false alarm failure rate.

[0038] Significantly improved testing efficiency: The matrix-discrete control and indicator unit concentrates 32 discrete signals into a set of switches-indicator lights-jacks, and with direct panel markings, troubleshooting time is reduced by more than 60%.

[0039] Strong anti-interference capability: The ARINC 429 interface adopts a 360° full-circumference press-fit shielding ring, which forms a continuous shielding cavity with the metal panel of the enclosure, effectively suppressing radio frequency crosstalk and ensuring the integrity of differential signals.

[0040] Easy maintenance: The audio / data output load interface has a built-in snap-on replaceable load module, which can quickly switch between different impedances without tools, meet a variety of test specifications, and reduce the number of external devices.

[0041] Integrated structure: All components are installed in the same housing, the front and rear panels are screwed together by standard aluminum profile columns, and the internal wiring harness is welded in one piece, reducing the weight of the whole machine by 30%, making it easy to carry and install on a frame. Attached Figure Description

[0042] Figure 1 This is a physical panel view of the airborne VHF-2100 transceiver test box of this utility model;

[0043] Figure 2 This is a picture of the rear panel of the airborne VHF-2100 transceiver test box of this utility model;

[0044] Figure 3 This is a schematic diagram of the power supply and signal bus distribution inside the airborne VHF-2100 transceiver test box of this utility model;

[0045] Figure 4 This is a schematic diagram of the internal interface interconnection of the airborne VHF-2100 transceiver test box of this utility model;

[0046] Figure 5 This is a machining drawing of the panel of this utility model;

[0047] Figure 6 This is the assembly and processing drawing of the box body of this utility model.

[0048] In the attached diagram: 1. Test interface; 2. Discrete control and indication unit; 3. Power interface; 4. Audio and data output load interface; 5. ARINC 429 interface; 6. T1200A / B connector; 7. Power connector. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0050] Reference Figures 1 to 6 The VHF-2100 transceiver tester shown includes a front panel and a rear panel;

[0051] The panel is rectangular, and the following components are fixed from top to bottom:

[0052] Test interface 1 is a square connector used to connect with the corresponding square connector of the airborne VHF-2100 transceiver;

[0053] Power interface 3 is a rectangular area, in which a dedicated power connector, a power switch and a switch indicator are installed. The three are arranged in sequence along the same horizontal axis. The output end of the dedicated power connector is soldered to the power harness inside the enclosure.

[0054] Discrete control and indication unit 2 is arranged in a row and column manner. Each row consists of discrete switches, discrete indicator lights and test sockets arranged in a horizontal direction. The common solder pin of each row is soldered to the discrete signal harness inside the box.

[0055] ARINC 429 Interface 5 is a shielded differential connector. Its flange is fastened to a rectangular opening on the panel with screws, and its pins are soldered to the ARINC 429 wiring harness inside the enclosure.

[0056] The audio and data output load interface 4 is a circular socket. The socket flange is locked to the circular opening on the panel by a nut, and its solder feet are welded to the load resistor wire harness inside the enclosure.

[0057] The back panel is a rectangular plate parallel to the front panel, and is fixed with the following components in sequence:

[0058] The power connector 7 is a rectangular power socket. Its flange is fastened to the rectangular opening on the rear panel by screws. Its solder feet are soldered to the power harness inside the enclosure and are electrically connected to the power interface 3 on the front panel through the harness.

[0059] The T1200A / B connector 6 is a multi-core rectangular connector. Its flange is fastened to the rectangular opening on the rear panel by screws. Its solder feet are soldered to the test harness inside the housing and are electrically connected to the test interface 1 on the front panel through the harness.

[0060] The front panel and the back panel are connected by four rectangular aluminum profile columns to form a closed enclosure.

[0061] The above embodiments are described in detail below:

[0062] Reference Figures 1 to 6 The VHF-2100 transceiver tester shown consists of a front panel and a rear panel connected by four rectangular aluminum profile columns, forming a closed aluminum alloy enclosure measuring 280mm in length, 190mm in width, and 3mm in thickness. All wiring harnesses inside the enclosure are welded together in one piece, forming a static integrated bus structure without additional adapters or switchboards.

[0063] Figure 1 The panel shown is rectangular and fixed from top to bottom:

[0064] Test Interface 1

[0065] Located at the top center of the panel, the square connector's centerline coincides with the panel's vertical centerline, with the socket facing outwards. A raised key on the mating surface uniquely matches the corresponding groove on the VHF-2100 transceiver, preventing reverse insertion. Four M3 head screws directly secure its 27mm x 27mm flange to the rectangular opening on the panel. The pins are soldered to the test bus inside the enclosure, forming a dual-interface path running through the rear panel via the T1200A / B connector 6.

[0066] Discrete control and indication unit 2

[0067] Located below the test interface, it features an 8-row x 3-column matrix static layout. Each row, from left to right, consists of discrete switches, discrete indicator lights, and shielded coaxial test jacks, all with their center lines collinear. The rows are evenly spaced vertically. The switches and indicator lights are integrated into a single panel, and the test jack housing is continuously welded to the enclosure's ground wire, forming 32 anti-interference discrete channels.

[0068] Power interface 3

[0069] Located below the discrete unit, it forms a horizontal rectangular area. Within this area, arranged equally spaced from left to right along the same horizontal axis are: a two-pin circular bayonet-type power connector, a single-pole single-throw boat-type power switch, and a 12mm diameter circular LED switch indicator. The connectors are equipped with threaded locking nuts that automatically position themselves after being screwed on; the center lines of all three are parallel to the horizontal center line of the panel, and the outgoing wires are soldered to the internal power bus of the enclosure and led out through the power connector 7 on the rear panel.

[0070] Audio and data output load interface 4

[0071] Located on the lower right side of the panel, the circular socket flange is secured to the circular opening with a nut. An internal clip inside the socket secures a replaceable load resistor module. The module's solder joints are soldered to the load resistor busbar of the enclosure, enabling tool-free, quick switching between different impedances.

[0072] ARINC 429 interface 5

[0073] Located on the lower left side of the panel, it is symmetrical to interface 4 and at the same centerline height. The shielded differential connector flange is fastened with screws, and the 360° full-circumference crimp ring of the housing is in continuous contact with the metal of the panel to form an RF shielding cavity; the pins are soldered to the ARINC 429 twisted-pair shielded wire harness of the enclosure to ensure the integrity of the differential signal.

[0074] Figure 2 The back panel is parallel to the front panel and is fixed sequentially from top to bottom:

[0075] T1200A / B connector 6

[0076] The 25-pin rectangular connector has a flange that is fastened to the rectangular opening on the rear panel with screws. The center of the flange is 70 mm from the upper edge of the rear panel and aligned with the center of test interface 1 on the front panel. The solder feet are soldered to the test bus of the enclosure to achieve direct signal transmission between the front and rear panels.

[0077] Power connector 7

[0078] A three-position rectangular power socket is located directly below the T1200A / B connector, with a center-to-center distance of 60mm and both centerlines coinciding with the vertical centerline of the rear panel. The socket is secured with flange screws, and the solder feet are welded to the power bus of the enclosure, and electrically connected to power interface 3 on the front panel to form a single-point power supply loop.

[0079] Figure 3 The internal power and signal bus routes of the enclosure are shown in an isometric diagram: the power bus runs from rear panel connector 7 → internal wiring harness → panel power interface 3 → switch → indicator light → various functional modules; the test bus runs from rear panel T1200A / B connector 6 → internal wiring harness → panel test interface 1; the discrete, ARINC 429, and load buses are each independently shielded, with no crossover connections throughout.

[0080] Figure 4 The interface interconnection is shown in the form of a principle block diagram: After the VHF-2100 transceiver is inserted into test interface 1 via the error-proof square plug, all signals are connected to the cabinet bus at once; the front panel discrete unit 2, ARINC 429 interface 5, and audio / data load interface 4 are each connected in parallel with the bus; the rear panel connector provides external power supply and test data acquisition to realize closed-loop testing.

[0081] Figure 5 The panel machining details are as follows: all opening positions, screw through holes, center distance tolerance ±0.1mm, and the surface is directly used as a shielding layer after conductive oxidation treatment, without the need for an additional cover plate.

[0082] Figure 6 The overall assembly section shows four rectangular aluminum profile columns that are screwed to the front and rear panels at both ends to form a closed frame. The internal wiring harness runs along the inside of the columns and is secured with cable ties to prevent vibration and wear. The entire unit weighs no more than 2.1 kg and can be placed directly into a standard 19-inch rack or carried in a portable container.

[0083] In some specific embodiments, the center line of the square connector of test interface 1 coincides with the vertical center line of the panel, and its square socket faces the outside of the box, forming a unique plugging direction.

[0084] In some specific embodiments, the dedicated power connector, power switch and switch indicator light in the power interface 3 are arranged at equal intervals along the same horizontal axis on the panel, and the center lines of the three are all parallel to the horizontal center line of the panel.

[0085] In some specific embodiments, the center lines of each row of discrete switches, discrete indicator lights and test sockets of the discrete control and indication unit 2 are collinear, and the rows are arranged at equal intervals in the vertical direction to form a matrix static layout.

[0086] In some specific embodiments, the center line of the shielded differential connector of the ARINC 429 interface 5 and the center line of the circular socket of the audio and data output load interface 4 are at the same horizontal level, and the two are arranged symmetrically on the panel.

[0087] In some specific embodiments, the power connector 7 and the T1200A / B connector 6 on the rear panel are arranged vertically, and the center lines of both coincide with the vertical center line of the rear panel, forming a static layout with vertical alignment.

[0088] In some specific embodiments, the square connector of test interface 1 is an error-proof structure, and its mating surface is provided with a convex key, which corresponds to the groove provided in the VHF-2100 transceiver connector to form a unique mating direction and avoid reverse insertion.

[0089] In some specific embodiments, the dedicated power connector of the power interface 3 is a circular bayonet connector with threaded locking, and its locking nut can be automatically positioned after being screwed on to prevent loosening due to vibration during the test.

[0090] The test socket of the discrete control and indication unit 2 is a shielded coaxial structure. Its outer shell is connected to the ground wire of the box, and the internal contacts are soldered to the discrete signal lines to form an anti-interference test channel.

[0091] The shielded differential connector housing of ARINC 429 interface 5 is equipped with a 360° full-circumference crimping ring, which is in close contact with the metal panel of the housing to form a continuous RF shielding cavity;

[0092] The circular socket of audio and data output load interface 4 integrates a replaceable load resistor module. The module is fixed to the cabinet by a clip inside the socket, enabling tool-free and quick replacement of loads with different impedances.

[0093] In some specific embodiments, the panel is a rectangular aluminum alloy plate with dimensions of 280mm±0.2mm along the length direction, 190mm±0.2mm along the width direction, and a thickness of 3mm±0.1mm; the square connector of test interface 1 has dimensions of 27mm×27mm, with its center distance from the left edge of the panel being 70mm±0.1mm and from the top edge being 50mm±0.1mm, and is fastened to the panel by four M3 cylindrical head screws;

[0094] The dedicated power connector is a two-core circular bayonet connector with an outer diameter of 20mm±0.1mm. The center of the mounting hole is 140mm±0.1mm from the left edge of the panel and 90mm±0.1mm from the top edge. The power switch is a single-pole single-throw rocker switch with dimensions of 30mm×25mm. The center distance between the power switch and the dedicated power connector is 40mm±0.1mm. The switch indicator light is a circular LED with a diameter of 12mm±0.1mm. The center distance between the LED and the power switch is 35mm±0.1mm. All three are arranged in a straight line on the same horizontal axis.

[0095] In some specific embodiments, the back panel is a rectangular aluminum alloy plate with the same external dimensions as the front panel, namely 280mm±0.2mm×190mm±0.2mm×3mm±0.1mm; the power connector 7 is a three-position rectangular power socket with external dimensions of 36mm×21mm, and its center distance from the lower edge of the back panel is 50mm±0.1mm, and its distance from the left edge is 140mm±0.1mm; the T1200A / B connector 6 is a 25-pin rectangular connector with external dimensions of 39mm×13mm, and its center distance from the center of the power connector 7 is 60mm±0.1mm, and the center lines of both coincide with the vertical center line of the back panel.

[0096] The working principle of this VHF-2100 transceiver tester can be summarized as "one-time connection, internal bus allocation, multi-channel parallel testing, and closed-loop self-testing". The specific steps are as follows:

[0097] Mechanical and electrical systems completed in one go

[0098] Align the square multi-core plug of the original VHF-2100 transceiver cable with the convex key guide groove of test interface 1 on the panel and insert it. The unique mating of the convex key and groove ensures that all 48 signal pins are aligned on the first attempt. At the same time, the plug shell makes 360° contact with the metal opening on the panel, forming a continuous shielded cavity. After the plug is inserted into place, its locking screw automatically locks with the square connector flange to prevent loosening due to vibration. At this time, all RF, audio, discrete, ARINC 429, and power pins of the transceiver are connected through the front interface → internally soldered wire harness → rear panel T1200A / B connector 6, forming a static bus that runs through the front and rear without any adapters, completing the "one-time connection".

[0099] Power supply circuit and power-on control

[0100] An external 28VDC ground power supply enters the internal power bus of the enclosure via the rear panel power connector 7. This bus directly supplies power to the dedicated circular connector at the front panel power interface 3, providing operating power to the transceiver. The same bus returns to the switch indicator light via the rocker-type power switch, achieving synchronous "power-on - indicator". The switch has a threaded locking mechanism and can withstand 5g of random vibration without experiencing millisecond-level power loss.

[0101] Signal classification parallel test

[0102] The internal bus distributes the transceiver output signals to three independent shielded branches according to their categories, enabling parallel testing:

[0103] a) Discrete signal branch: 32 discrete signals are controlled by a three-way structure of switch-indicator-coaxial jack in the matrix discrete control and indication unit 2. When excitation is needed, the operator can inject high / low discrete signals into the transceiver by toggling the corresponding switch; when monitoring is needed, the indicator light displays the discrete status returned by the transceiver in real time, and a probe can be connected to the shielded coaxial jack to capture transients with an oscilloscope.

[0104] b) ARINC 429 data branch: Dual differential signals enter the shielded differential connector 5 through a full-circuit 360° crimp ring. The crimp ring and the panel metal are continuously conductive, forming a coaxial RF shield. The internal twisted pair shielded wire is directly led to the corresponding core wire of the T1200A / B connector 6 on the rear panel. It can be connected to an external bus analyzer to complete rate, word spacing, and verification tests without the need for an additional shielding box.

[0105] c) Audio / Data Output Branch: The transceiver's voice and data outputs are sent to the circular socket via an internal load resistor bus; the socket has a snap-lock mechanism that allows for the replacement of load modules (standard 600Ω, 50Ω, and high impedance). Replacement is simple: just press the snap-lock with your finger to remove the module; different impedance matching is completed within 0.5 seconds, enabling automatic testing of power, distortion, and modulation.

[0106] Closed-loop self-testing and fault location

[0107] When the transceiver operates on a designated channel (118–137MHz), its RF output returns to its own receiving channel via an internal circulator, forming a self-transmitting and self-receiving closed loop. The tester reads internal parameters such as RSSI, VSWR, and modulation index from the transceiver through the ARINC 429 branch and compares them synchronously with the PTT, SQL, and FAIL statuses provided by the discrete branch. If any indicator exceeds the limit, the corresponding indicator light will immediately alarm, and abnormal signal waveforms can be captured through the test jack to achieve minute-level fault location.

[0108] Test End and Quick Part Replacement

[0109] After the test is completed, first turn off the rocker switch and the indicator light will go out to confirm that the power is off; loosen the locking screw of the square plug, the convex key guide ensures that the plug can be pulled out in a straight line, avoiding damage to the pins when pulling at an angle; repeat step 1 when changing to the next transceiver, without the need to rewire or recalibrate, to achieve a rapid rotation of an average of 3 minutes per transceiver.

[0110] In summary, this utility model, through the working principle of "error-proof single-connection - internal welding bus - classified shielding parallel testing - closed-loop data comparison", completes the functional verification, performance testing and fault location of VHF-2100 transceivers without the need for external adapters, loose cables or independent load boxes, significantly improving the troubleshooting efficiency and connection reliability of civil aviation routes and maintenance bases.

[0111] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0112] Compared with existing technologies, the beneficial effects of this utility model are mainly reflected in four aspects: "fast, stable, accurate, and simple".

[0113] Testing efficiency improved by more than 60%

[0114] The error-proof square interface allows for one-time plug-in, synchronizing all 32 discrete channels, ARINC 429, audio / data, and power, eliminating the need for repeated soldering and untangling of loose wires; the row-and-column switch-indicator-jack triple structure enables a single operator to complete full-function troubleshooting of a transceiver within 3 minutes, significantly improving the turnaround speed of the line.

[0115] Connection reliability is improved by an order of magnitude

[0116] The square connector features a unique guide with a raised key and recessed groove, providing resistance to 5g random vibration after the plug is locked in place; the circular power interface uses a threaded locking bayonet, maintaining microsecond-level continuity even under vibration; the internal wiring harness is welded in one piece, eliminating the risk of adapter board loosening, and reducing the false alarm failure rate from 2% in the traditional mode to below 0.2%.

[0117] Testing accuracy and anti-interference capability are enhanced simultaneously.

[0118] The ARINC 429 interface features a 360° full-circuit crimp ring that conducts continuously with the panel metal, forming a complete RF shielded cavity. Differential signal crosstalk attenuation is >60 dB, ensuring high-speed data integrity. The shielded coaxial test jack provides oscilloscope-level measurement points, improving fault waveform capture accuracy to ±1%, enabling "one-time judgment".

[0119] Maintenance and portability are highly simplified

[0120] The audio / data load has a built-in snap-on replaceable module, allowing for tool-free switching between 600Ω, 50Ω, and high impedance in 0.5 seconds, eliminating the need for an external load box. The integrated aluminum alloy chassis weighs less than 2.1kg, a 30% reduction compared to traditional loose-line fixtures. It can be carried by hand or directly installed in a 19-inch rack, meeting the rapid relocation needs of various scenarios such as line operation, scheduled maintenance, and field operations.

[0121] In summary, this utility model represents a systematic breakthrough in shortening troubleshooting cycles, reducing human error, improving testing accuracy, and enhancing equipment portability, significantly improving the maintenance efficiency and safety of civil aviation VHF-2100 transceivers.

[0122] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A VHF-2100 transceiver tester, characterized in that, It consists of a front panel and a back panel; The panel is rectangular and is fixed from top to bottom with the following components: The test interface (1) is a square connector used to connect with the corresponding square connector of the airborne VHF-2100 transceiver; The power interface (3) is a rectangular area. A dedicated power connector, a power switch and a switch indicator are installed in the area. The three are arranged in sequence along the same horizontal axis. The output end of the dedicated power connector is welded to the power harness inside the box. Discrete control and indication unit (2) is arranged in a row and column manner. Each row consists of discrete switches, discrete indicator lights and test sockets arranged in the horizontal direction. The common solder pins of each row are soldered to the discrete signal harness inside the box. The ARINC 429 interface (5) is a shielded differential connector. Its flange is fastened to the rectangular opening on the panel by screws, and its pins are soldered to the ARINC 429 wiring harness inside the enclosure. The audio and data output load interface (4) is a circular socket. The socket flange is locked to the circular opening on the panel by a nut, and its solder feet are welded to the load resistor wire harness inside the box. The rear plate is a rectangular plate parallel to the front plate, and is fixed in sequence with: The power connector (7) is a rectangular power socket. Its flange is fastened to the rectangular opening on the back panel by screws. Its solder feet are soldered to the power harness inside the box and are electrically connected to the power interface (3) on the panel through the harness. The T1200A / B connector (6) is a multi-core rectangular connector. Its flange is fastened to the rectangular opening on the back plate by screws. Its solder feet are soldered to the test harness inside the housing and electrically connected to the test interface (1) on the panel through the harness. The front panel and the rear panel are bolted together by four rectangular aluminum profile columns to form a closed enclosure.

2. The VHF-2100 transceiver tester according to claim 1, characterized in that: The center line of the square connector of the test interface (1) coincides with the vertical center line of the panel, and its square socket faces the outside of the box, forming a unique plugging direction.

3. The VHF-2100 transceiver tester according to claim 1, characterized in that: The dedicated power connector, power switch and switch indicator light in the power interface (3) are arranged at equal intervals along the same horizontal axis on the panel, and the center lines of the three are parallel to the horizontal center line of the panel.

4. The VHF-2100 transceiver tester according to claim 1, characterized in that: The center lines of each row of discrete switches, discrete indicator lights and test sockets in the discrete control and indication unit (2) are collinear, and the rows are arranged at equal intervals in the vertical direction to form a matrix static layout.

5. The VHF-2100 transceiver tester according to claim 1, characterized in that: The center line of the shielded differential connector of the ARINC 429 interface (5) and the center line of the circular socket of the audio and data output load interface (4) are at the same horizontal level, and the two are arranged symmetrically on the panel.

6. The VHF-2100 transceiver tester according to claim 1, characterized in that: The power connector (7) and the T1200A / B connector (6) on the rear panel are arranged vertically, and their center lines coincide with the vertical center line of the rear panel, forming a static layout with the top and bottom aligned.

7. The VHF-2100 transceiver tester according to claim 1, characterized in that: The square connector of the test interface (1) is an error-proof structure. Its mating surface is provided with a convex key, which corresponds to the groove provided in the VHF-2100 transceiver connector to form a unique mating direction and avoid reverse insertion.

8. The VHF-2100 transceiver tester according to claim 1, characterized in that: The dedicated power connector of the power interface (3) is a round bayonet connector with threaded locking. Its locking nut can be automatically positioned after being screwed on to prevent it from loosening due to vibration during the test. The test socket of the discrete control and indication unit (2) is a shielded coaxial structure. Its outer shell is connected to the ground wire of the box, and the internal contacts are welded to the discrete signal lines to form an anti-interference test channel. The shielded differential connector housing of the ARINC 429 interface (5) is provided with a 360° full-circumference crimping ring, which is in close contact with the metal panel of the housing to form a continuous radio frequency shielding cavity; The circular socket of the audio and data output load interface (4) integrates a replaceable load resistor module. The module is fixed to the cabinet by a buckle inside the socket, enabling tool-free and quick replacement of loads with different impedances.

9. The VHF-2100 transceiver tester according to claim 1, characterized in that: The panel is a rectangular aluminum alloy plate with dimensions of 280mm±0.2mm along the length direction, 190mm±0.2mm along the width direction, and a thickness of 3mm±0.1mm; the square connector of the test interface (1) has dimensions of 27mm×27mm, its center is 70mm±0.1mm from the left edge of the panel and 50mm±0.1mm from the top edge, and is fastened to the panel by four M3 cylindrical head screws; The dedicated power connector is a two-core circular bayonet connector with an outer diameter of 20mm±0.1mm. The center of the mounting hole is 140mm±0.1mm from the left edge of the panel and 90mm±0.1mm from the top edge. The power switch is a single-pole single-throw rocker switch with dimensions of 30mm×25mm and a center distance of 40mm±0.1mm from the dedicated power connector. The switch indicator light is a circular LED with a diameter of 12mm±0.1mm and a center distance of 35mm±0.1mm from the power switch. All three are arranged in a straight line on the same horizontal axis.

10. The VHF-2100 transceiver tester according to claim 1, characterized in that: The back panel is a rectangular aluminum alloy plate with the same external dimensions as the front panel, namely 280mm±0.2mm×190mm±0.2mm×3mm±0.1mm; the power connector (7) is a three-position rectangular power socket with external dimensions of 36mm×21mm, and its center is 50mm±0.1mm from the lower edge of the back panel and 140mm±0.1mm from the left edge; the T1200A / B connector (6) is a 25-pin rectangular connector with external dimensions of 39mm×13mm, and its center is 60mm±0.1mm from the center of the power connector (7), and the center lines of both coincide with the vertical center line of the back panel.

Images