Audio monitor testing device

Abstract

The utility model discloses an audio monitor testing device. The audio monitor testing device comprises a testing box, a connecting cable and a connector. The test box is connected with the tested audio monitor through the connector connected with one end of the cable, and various function tests can be carried out on a product only by operating the corresponding change-over switch on the test tool panel, so that the problems that a conventional test method is disordered in test site, and the test efficiency is low are solved. The wire clamp is easy to wind, the signal type is difficult to distinguish, the test time is long, the efficiency is low, and the operation error is caused by repeatedly taking the wire clamp. According to the audio monitor testing device, the audio monitor can be rapidly and reliably tested, the problems that manual testing is time-consuming, poor in contact and prone to damage of audio monitor connector pins are solved, the working efficiency is improved, and the testing reliability and safety are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of avionics test, especially an audio monitor testing device. BACKGROUND

[0002] An audio monitor is used for picking up and monitoring cabin audio signals and providing the signals to a flight parameter and audio-video recording system or a cabin audio-video recorder. Currently, a conventional detection method for a certain series of audio monitors needs to connect signal input and output alligator clips with alligator clips of a test cable.

[0003] 2. The test precision is not accurate. When testing a certain function, the unused alligator clips are easy to contact each other, causing the parameter value being tested to be inaccurate.

[0004] 3. The test efficiency is low. In product testing, the alligator clips are repeatedly short-circuited and disconnected, prolonging the test time of a single product. In addition, long-term use of the alligator clips may cause the alligator clips and the connecting wires to fall off, requiring the test cable to be re-welded, which affects the work efficiency.

[0005] 4. There is a possibility of burning the light guide plate. The product supply voltage is 28V, and the test voltage of the light guide plate of different models of products is 28V and 5V. When preparing to test the light guide plate after testing other functions of the product, if the supply voltage of the direct current power supply is not adjusted, the light guide plate is directly supplied with 28V voltage, which may burn the light guide plate. INVENTION CONTENT

[0006] The utility model discloses an audio monitor testing device, which solves the problems of easy entanglement of alligator clips, difficulty in distinguishing signal types, long test time, low efficiency, and operation errors caused by repeated taking of alligator clips in conventional test methods.

[0007] TECHNICAL SCHEME

[0008] An audio monitor testing device comprises a test box, a cable, a connector, a signal generator, and a distortion meter.

[0009] A test panel is arranged on the shell of the test box. The test panel is provided with a signal input socket, a signal output socket, and a test switch group.

[0010] The signal input socket is connected with the signal generator, and the signal output socket is connected with the distortion meter.

[0011] The signal input socket and the signal output socket are connected with the cable through the test switch group inside, and the cable is connected with the audio monitor to be tested through the connector.

[0012] Further, the test switch group comprises: a microphone channel switching main switch, a microphone channel switching auxiliary switch;

[0013] The microphone channel switching main switch and the microphone channel switching auxiliary switch jointly act to switch microphone channel one, microphone channel two, microphone channel three, microphone channel one+two, microphone channel one+two+three.

[0014] Further, the test switch group further comprises: an output switching switch;

[0015] The output switching switch is a single-pole double-throw switch;

[0016] The single-pole double-throw switch has a common end connected to a signal output socket positive end, and two fixed ends connected to a to-be-tested audio monitor cabin audio output 1 positive end and a to-be-tested audio monitor cabin audio output 2 positive end respectively.

[0017] Further, the test switch group further comprises: a light guide plate switching switch; the light guide plate switching switch is a three-grade six-foot knob switch;

[0018] A foot A of the three-grade six-foot knob switch is connected to a to-be-tested audio monitor 28V lighting positive end, a foot C is connected to a to-be-tested audio monitor 5V lighting positive end, a foot D is connected to an external 28V power supply positive end, the foot D is further connected to a DC / DC converter 28V input end, a foot F is connected to a DC / DC converter 5V output end, and a DC / DC converter GND is connected to an external 28V power supply negative end.

[0019] Further, the test switch further comprises a state indication lamp switching switch;

[0020] The state indication lamp switching switch is a self-resetting switch, and two ends are connected to a system state pin and a shield ground pin of the to-be-tested audio monitor respectively.

[0021] Further, the microphone channel switching main switch is a six-grade twenty-four-foot switch;

[0022] Feet 2, 6, 10, 14, 18 and 22 are connected to a signal input socket positive end;

[0023] Feet 4, 8, 12, 16, 20 and 24 are connected to a signal input socket negative end;

[0024] Foot 1 is connected to a microphone channel one positive end of the to-be-tested audio monitor; foot 3 is connected to a microphone channel one negative end of the to-be-tested audio monitor;

[0025] Foot 5 is connected to a microphone channel two positive end of the to-be-tested audio monitor; foot 7 is connected to a microphone channel two negative end of the to-be-tested audio monitor;

[0026] The pin 9 is connected with the positive terminal of the third microphone channel of the audio monitor to be tested, and the pin 11 is connected with the negative terminal of the third microphone channel of the audio monitor to be tested.

[0027] The pin 15 is connected with the negative terminal of the first and second microphone channels of the audio monitor to be tested.

[0028] The pin 19 is connected with the negative terminal of the first, second and third microphone channels of the audio monitor to be tested.

[0029] The pin 21 is connected with the positive terminal of the monitoring input of the audio monitor to be tested.

[0030] The pin 23 is connected with the negative terminal of the monitoring input of the audio monitor to be tested.

[0031] The microphone channel switching auxiliary switch is a three-blade double-throw switch.

[0032] The three common terminal pins H, I and J of the three-blade double-throw switch are connected together.

[0033] The pin K and the pin L are simultaneously connected with the pin 1 of the microphone channel switching main switch.

[0034] The pin M and the pin N are simultaneously connected with the pin 5 and the pin 13 of the microphone channel switching main switch.

[0035] The pin P is simultaneously connected with the pin 9 and the pin 17 of the microphone channel switching main switch.

[0036] Beneficial effects:

[0037] The audio monitor testing device is provided, and the audio monitor to be tested is connected for testing through the testing box, the connecting cable and the connector, and has the following beneficial effects:

[0038] (1) The operation is simple. When the tester is used to test the product, the tester cable is only connected with the product socket, the switch on the tester is easy to operate, and when a certain function is tested, the switch is only turned to the specified position on the panel, and the testing is easily completed.

[0039] (2) The testing time is saved, and the working efficiency is improved. Since the operation method is simple and reliable, the testing time at room temperature and high and low temperature is greatly shortened, the entire testing process using the tester is less than 1 minute, and the testing efficiency is improved by 5-7 times compared with the traditional testing method.

[0040] (3) The reliability of the testing is improved. When the tester tests a certain function of the product, all the alligator clips are replaced and controlled by the switch, the alligator clips are prevented from contacting each other, and the accuracy and reliability of the testing value are improved.

[0041] (4) The safety of the product is improved. When the tester is used, the product and the light guide plate can be powered at the same time, the power module is used inside to set the voltage of the light guide plate to 28V and 5V power supply, and the 28V and 5V light guide plate outputs are different pins, which avoids the possibility of product damage caused by human factors.

[0042] (5) High compatibility. When the tester is used, it can be compatible with 6 type audio monitor testing. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 It is a schematic diagram of an audio monitor testing device;

[0044] Figure 2 It is a schematic diagram of an audio monitor testing device testing box panel;

[0045] Figure 3 It is an electrical connection principle diagram of an audio monitor testing device. DETAILED DESCRIPTION

[0046] The audio monitor testing device described in the utility model will be further introduced below in combination with the drawings, as shown in the drawings, the audio monitor testing device comprises a testing box, a connecting cable and a connector. The testing box is connected with the connecting cable, the connecting cable is connected with the connector, the connector is connected with the audio monitor to be tested, and each test index of the audio monitor to be tested is tested by operating the switch provided on the testing box panel. Figure 1

[0047] The testing box comprises signal input switching switch K1, K2, system state indication lamp button switch K3, light guide plate voltage selection switch K4, cabin sound output switching switch K5, DC / DC conversion module, signal input, output banana socket and key test hole, as shown in the drawings. Figure 2

[0048] The connector is an aviation connector XP1.

[0049] Embodiment: as Figure 3 ​​When the audio monitor under test is connected to the test device through the connector XP1, first connect the signal generator to the signal input banana socket and the distortion meter to the signal output banana socket. Turn on the power supply to power the product. If you want to test the remote microphone 1 channel detection, set switch K1 to microphone 1, K2 to empty, and K5 to cabin audio 1 output. At this time, the signal input is pin 34, 36 of XP1, the signal output is pin 21, 20 of XP1, the signal input is connected to the signal generator to set the corresponding parameters, and the signal output is connected to the distortion meter to display the test value, thereby completing the remote microphone 1 channel detection test. If you want to test the remote microphone 2 channel detection, set switch K1 to microphone 2, K2 to empty, and K5 to cabin audio 1 output. At this time, the signal input is pin 38, 40 of XP1, the signal output is pin 21, 20 of XP1, the signal input is connected to the signal generator to set the corresponding parameters, and the signal output is connected to the distortion meter to display the test value, thereby completing the remote microphone 2 channel detection test. If you want to test the remote microphone 3 channel detection, set switch K1 to microphone 3, K2 to empty, and K5 to cabin audio 2 output. At this time, the signal input is pin 43, 45 of XP1, the signal output is pin 23, 22 of XP1, the signal input is connected to the signal generator to set the corresponding parameters, and the signal output is connected to the distortion meter to display the test value, thereby completing the remote microphone 3 channel detection test. If you want to test the remote microphone 1+2 channel detection, set switch K1 to microphone 1+2, K2 to microphone 1+2, and K5 to cabin audio 1 output. At this time, the signal input is pin 34, 38, 36, 40 of XP1, the signal output is pin 21, 20 of XP1, the signal input is connected to the signal generator to set the corresponding parameters, and the signal output is connected to the distortion meter to display the test value, thereby completing the remote microphone 1+2 channel detection test. If you want to test the remote microphone 1+2+3 channel detection, set switch K1 to microphone 1+2+3, K2 to microphone 1+2+3, and K5 to cabin audio 2 output. At this time, the signal input is pin 34, 38, 43, 36, 40, 45 of XP1, the signal output is pin 23, 22 of XP1, the signal input is connected to the signal generator to set the corresponding parameters, and the signal output is connected to the distortion meter to display the test value, thereby completing the remote microphone 1+2+3 channel detection test.

[0050] If you want to test the monitoring channel, set switch K1 to monitoring, K2 to empty. At this time, the signal input is pin 29, 28 of XP1. Apply a 1 kHz, 1.5 Vrms sinusoidal signal through the signal generator. Insert earphones into the earphone jack on the product panel. The sound should be heard from the earphones.

[0051] If the light guide plate test is needed, according to different model product light guide plate voltage, if the light guide plate voltage is 28V, switch K4 is set to light guide plate 28V end, at this time light guide plate voltage output XP1's 9, 12 feet, if the light guide plate voltage is 5V, switch K4 is set to light guide plate 5V end, at this time light guide plate voltage output XP1's 14, 12 feet.

[0052] If the state indication detection test is needed, XP1's 51 feet system state is suspended when the product is powered on, at this time the state indication lamp of the measured product panel should be always bright, when the switch K3 is pressed, XP1's 51 and 24 feet are connected, at this time the state indication lamp of the measured product panel should not be bright.

[0053] If the key test is needed, the multimeter pen is connected to the test hole of the key test, at this time the test key of the product panel is pressed, the resistance should be not more than 5Ω.

[0054] In summary, the utility model can be through signal input switch K1, K2, system state indication lamp button switch K3, light guide plate voltage selection switch K4, cabin sound output switch K5, DC / DC conversion module, signal input, output banana socket, key test test hole. Just can quickly complete the test of audio monitor, save manpower, improve efficiency, safe and reliable.

Claims

1. An audio monitor test apparatus, characterized by: The device comprises a test box, a cable, a connector, a signal generator and a distortion meter. The test box is provided with a test panel on the shell, and the test panel is provided with a signal input socket, a signal output socket and a test switch group. The signal input socket is connected with the signal generator, and the signal output socket is connected with the distortion meter. The signal input socket and the signal output socket are connected with the cable through the test switch group, and the cable is connected with the audio monitor to be tested through the connector.

2. An audio monitor test apparatus as claimed in claim 1, wherein: The test switch group comprises a main switch for switching the microphone channel and a secondary switch for switching the microphone channel. The main switch and the secondary switch for switching the microphone channel jointly switch the microphone channel 1, the microphone channel 2, the microphone channel 3, the microphone channel 1+2 and the microphone channel 1+2+3.

3. An audio monitor test apparatus as defined in claim 1, wherein: The test switch group further comprises an output switch. The output switch is a single-pole double-throw switch. The common end of the single-pole double-throw switch is connected with the positive end of the signal output socket, and the two fixed ends of the single-pole double-throw switch are respectively connected with the positive ends of the cabin audio output 1 and the cabin audio output 2 of the audio monitor to be tested.

4. An audio monitor test apparatus as defined in claim 1, wherein: The test switch group further comprises a light guide plate switch. The foot A of the three-grade six-foot knob switch is connected with the 28V lighting positive end of the audio monitor to be tested, the foot C is connected with the 5V lighting positive end of the audio monitor to be tested, the foot D is connected with the external 28V power supply positive end, the foot D is further connected with the 28V input end of the DC / DC converter, the foot F is connected with the 5V output end of the DC / DC converter, and the GND of the DC / DC converter is connected with the external 28V power supply negative end.

5. An audio monitor test apparatus as defined in claim 1, wherein: The test switch further comprises a state indicating lamp switch. The state indicating lamp switch is a self-resetting switch, and the two ends are respectively connected with the system state pin and the shield ground pin of the audio monitor to be tested.

6. An audio monitor test apparatus as defined in claim 2, wherein: The main switch for switching the microphone channel is a six-grade twenty-four-foot switch. The feet 2, 6, 10, 14, 18 and 22 are connected with the positive end of the signal input socket. The feet 4, 8, 12, 16, 20 and 24 are connected with the negative end of the signal input socket. The foot 1 is connected with the positive end of the microphone channel 1 of the audio monitor to be tested. The foot 3 is connected with the negative end of the microphone channel 1 of the audio monitor to be tested. The foot 5 is connected with the positive end of the microphone channel 2 of the audio monitor to be tested, and the foot 7 is connected with the negative end of the microphone channel 2 of the audio monitor to be tested. The foot 9 is connected with the positive end of the microphone channel 3 of the audio monitor to be tested, and the foot 11 is connected with the negative end of the microphone channel 3 of the audio monitor to be tested. The foot 15 is connected with the negative end of the microphone channel 1+2 of the audio monitor to be tested. The foot 19 is connected with the negative end of the microphone channel 1+2+3 of the audio monitor to be tested. The foot 21 is connected with the positive end of the monitoring input of the audio monitor to be tested. The foot 23 is connected with the negative end of the monitoring input of the audio monitor to be tested. The secondary switch for switching the microphone channel is a three-pole double-throw switch. The three common end feet H, I and J of the three-pole double-throw switch are connected together. The feet K and L are simultaneously connected with the foot 1 of the main switch for switching the microphone channel. The feet M and N are simultaneously connected with the feet 5 and 13 of the main switch for switching the microphone channel. The foot P is simultaneously connected with the feet 9 and 17 of the main switch for switching the microphone channel.

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