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APX 测试简易手册专业知识整理分享信号路径的设置蓝牙播放器测试1.在信号源路径中选择bluetooth.2.点击settings 进行配对连接。
3.选择A2DP Source HSP4.点击Scan for devices 搜索被测产品5.点击pair 进行配对6.连接A2DP 协议7.开始测试相关测试项目专业知识整理分享蓝牙主机(Audio Gateway)的测试1.Input Configuraton 路径设置为bluetooth2.点击settings 进行配对连接。
3.选择A2DP link ( Hand-free 或者headset)4.点击Scan for devices 搜索被测产品5.点击pair 进行配对6.连接A2DP 协议7.开始测试相关测试项目专业知识整理分享功放测试1.根据实际接线，设置信号源的输出信号方式2.根据实际接线，设置分析仪的输入信号方式专业知识整理分享DVD、CD的测试1.信号源设为none2.分析仪接口设置与实际接线方式一致。
专业知识整理分享选择测试项目根据测试需求增加项目专业知识整理分享专业知识整理分享专业知识整理分享电平测试1.设置信号源输出波形2.设置信号源大小3.设置信号源频率4.打开信号源开关5.读取测量值专业知识整理分享失真测试1设置信号源输出波形，2设置信号源大小3设置信号源频率4打开信号源开关专业知识整理分享6读取测量值信噪比测试1设置信号源输出波形2设置信号源大小3设置信号源频率4打开信号源开关专业知识整理分享6读取测量值频率扫描测试1.设置信号源波形2.设置信号源大小3.设置信号源开始频率，结束频率，扫描点数4.设置滤波器专业知识整理分享5.点击Start 开始测试。
总谐波失真加噪声频率扫描测试1设置信号源波形2设置信号源大小3设置信号源开始频率，结束频率，扫描点数专业知识整理分享4设置滤波器5 点击Start 开始测试生成测试报告专业知识整理分享专业知识整理分享。
APX1500 QUICKSTART GUIDEENGLISH2QUICKSTART GUIDE (ENGLISH)BOX CONTENTSAPX1500 Power cable Quickstart GuideSafety & Warranty Information BookletQUICK SETUP1. Make sure all items listed in the BOX CONTENTS section are included in the box.2. READ SAFETY & WARRANTY INFORMATION BOOKLET BEFORE USING THE PRODUCT.3. Study the connection diagram in this guide.4. Place all devices in an appropriate position for operation.5. Make sure all devices are turned off and all faders and gain knobs are set to "zero."6. Connect all sound sources' outputs to amplifier inputs as indicated in the diagram.7. Connect the amplifier outputs to speakers.8. Plug all devices into an appropriate power source. 9.Switch everything on in the following order: • Sound sources (i.e. microphones, turntables, CD players, etc.) • Mixer • Amplifier • Speakers10.When turning powering down, turn everything off in the following order: • Speakers • Amplifier • Mixer • Sound sourcesCONNECTION DIAGRAMDo NOT ma ke a ny connectionswhen any device is powered on.Note: Please see the SPEAKER CONNECTION section for important setup information.3REAR PANEL DIAGRAM41.COOLING FAN - This fan secures cooling for the amplifier. The airflow is from front to rear. The fan speed is electronically regulated depending on the temperature of the power devices. D o not block these fan grills or mount the amplifier in an enclosed rack, which could cause the amplifier to overheat.2. LOW PASS FILTER – This switch activates the built-in low cut filter. All audio below 30 Hz will be removed from the output signal.3. BALANCED COMBO INPUTS –channel.4.OUTPUT MODE SWITCH – The APX 1500 presents three operating modes: Stereo ModeIn this mode, CH 1 and CH 2 operate independently (as a normalstereo amplifier) The CH 1 input signal will be output from the CH A output connector, and CH 2 input signal will be output from the CH 2 output connector.Parallel Mono ModeIn this mode, CH 1 input signal will be output from theoutput connectors of both channels.Bridged ModeIn this mode, CH 1 input signal will be output from thebridge-mono output connector.5.CHANNEL OUTPUTS – Connect your speakers' inputjacks to these outputs.• For the binding posts, red is the positive signal andblack is the negative signal. Please make sure to respect the speaker polarity when using bindingpost. Turn off the unit before connecting an audio signal to the binding post to avoid any electric shock! • The SPEAKON outputs are specifically designed to connect to high power speakers. The correct polarityis secured automatically. They prevent shock hazard and they lock-in securely.6.POWER IN – Connect the cable to a standard wall outlet. Be sure the supplied voltage matches the required voltage of the amplifier. D o not connect the amplifier to an outlet that does not match the required voltage; doing so could damage the amplifier.FRONT PANEL DIAGRAM1.POWER SWITCH – Turns the amplifier on/off.2.POWER LED – Illuminates when the amplifier is on.3.LED METERS – Indicates the audio signal level. This LED will light up when the signal at the output is at least -20 dB.4.CLIP – The red "Clip" light indicates the signal is distorting or "clipping," which occurs when the volumeexceeds the amplifier's maximum output. This LED will flash when distortion reaches a level of 0.5%.Consistent clipping can damage your amplifier and speakers. If the signal is regularly clipping, reduce thevolume of the amplifier. If it is lit about half the time, the amplifier channel's thermal protection will causethe channel to shut down within a few minutes.5.PROT – The red "Prot" light indicates the output for that channel has turned off to protect your amplifier andspeakers, which can be damaged by excessive volume resulting in clipping. If the meters' red lights areilluminating, decrease the levels of your CHANNEL GAIN knobs.6.CHANNEL GAIN – This knob controls the channel's output signal.7.COOLING VENTS – These vents help to cool the internal parts of the amplifier when in use. D o not blockthese vents, and keep the vents clean at all times.SPEAKER CONNECTIONSHORT CIRCUIT PROTECTIONOutput short circuit protection protects the output devices of the amplifier from short circuits andstressful loads. If your speaker lines short, the amplifier automatically detects this problem anddiscontinues operation for that channel. (If one channel's short circuit protection is activated, the otherchannel will continue to operate normally.) D uring short circuit protection, the "Clip" and "Protect"LEDs will light simultaneously, and all output from that channel will stop.Short Circuit Protection can often be traced back to the signal output line (i.e., the speaker line).Check the line from the output terminal of the amplifier to the speaker. If this line is still good, checkthe internal speaker connections and components. (A short circuit can often be traced to a bad cable or a bad speaker component and is rarely traced to the amplifier itself.)Bare Wire Connections:When connecting your speakers to the amplifier using bare wires, follow these steps:1.Unscrew the red and black caps of the binding posts. (Be sure not to completely remove or unscrew the redand black caps.)2.Strip back the wire insulation 1/2" (13mm).3.Insert the bare wire into the hole exposed under the binding post cap.4.After inserting the wire, screw the binding post cap down on the wire.Spade Connector:When connecting your speakers to the amplifier using spade connectors, follow these steps:1.Unscrew the red and black caps of the binding posts. (Be sure not to completely remove or unscrew the redand black caps.)2.Insert the spade connectors into the binding posts.3.Tighten the caps down on the spade connectors.Banana Connectors:When connecting your speakers to the amplifier using banana connectors, follow these steps:1.Be sure that the red and black caps of the binding posts are tightened completely.2.Insert the banana connectors into the caps of the binding posts. Be sure that the connectors are insertedsecurely.4The APX1500 provides three operating modes: stereo mode, parallel (mono) mode and bridged mode, you can decide each specific operating mode according to your actual application circumstance.In STEREO MODE, channel 1 and channel 2 operate independently (as a conventional stereo amplifier). The channel 1 input signal will be output from the channel 1 output connectors, and the channel 2 input signal will be output from the channel 2 output connectors.OPERATION IN PARALLEL MODEIn this mode, the channel 1 input signal will be output from the output connectors of both channels. The channel 2 input jack is not used; the channel 1 and 2 volumes can be adjusted independently. Use the Parallel Mode when you want to drive two speakers with only one input signal keeping separate control of the volume of the two channels. NOTE: Since you are not using the channel 2 input you can use this socket to "daisy-chain" to another amplifier.5In this mode, the channel 1 input signal will be output from the bridge output connectors. (The 2 binding posts) In this case, use the channel 1 volume control to adjust the volume, keep the volume control of channel 2 turned completely down (counter clockwise). Bridged mode is intended for driving loads with a total impedance of 8 ohms or greater.In Bridge Mode you will combine the power of both channels into one speaker. You will have a large amount of power available so carefully check the power handling of your speaker before operation.RACKMOUNTING TIPS•It is a good idea to mount this in the bottom of a rack frame. Supporting the back of the unit may be necessary for portable or road use. The APX1500 mounts into a standard 19u rackmount.•ALTO amplifiers are well shielded; however, mounting low-level electronics some distance away from power amplifiers is common practice to reduce the possibility of electromagnetic interference into the low levelunits, which may sometimes be unusually susceptible to picking up such interference.•When wiring a rack, it is good installation practice to route all AC wiring along one side of the rack and all audio wiring along the other side to avoid coupling AC-borne interference into the audio.6SPECIFICATIONSPOWER SPECIFICATIONS•*******************%THD,bothchannelsdriven,230V:o4Ω: 2 x 550Wo8Ω: 2 x 350W•Power EIAJ@ 1% THD, both channels driven, 230V:o4Ω: 2 x 750Wo8Ω: 2 x 370W•Bridge Mono Mode:o8Ω: 1 x 1500Wo16Ω: 1 x 740WELECTRICAL SPECIFICATION•INPUT SENSITIVITY: 1.0V•INPUT IMPEDANCE: 10 KΩ unbalanced•FREQUENCY RESPONSE: (at 10dB below rated output power) 20 Hz~25 KHz (+0/-3 dB)•VOLTAGE GAIN: 32 dB•DISTORTION: (SMPTE-1M) <0.5%•S/N ratio: >110 dB•Inrush Current at initial switch on: 8.24A•Inrush Current after power supply interruption: 9.30AGENERAL SPECIFICATIONS•PROTECTIONS: ON/OFF, muting, DC-fault load grounding relay. Internal fault fuses•CONTROLS Front: AC switch•CONTROLS Rear: Low pass filter, mode selector•SIGNAL INDICATORS: 2 green LED CLIP: 2 red LED•POWER INDICATORS: 1 Blue LED PROTECTION: 1 red LED •INPUT CONNECTORS: Balanced combo•OUTPUT: "Touch-proof" binding posts and Speakon jacks.DIMENSIONS•WxLxH: 19” x 11.2” x 3.5” (483mm x 285mm x 89mm)WEIGHT•12.1 lb; 5.5kg7MANUAL VERSION 1.2。
APx525测试仪操作说明1．双击打开桌面AP测试软件；2.测试参数前的设置。
（1）点击右侧菜单Signal Path Setup，在打开的界面选择相应测试端口，如下图所示（2）选择input/output下拉菜单，选中references项，修改input refercens中的阻抗和频率选项。
如下图修改完成之后，点击Generator off 变成Generator on，检测有无信号输出与被测机型的频率一致3．测试失真THD+N Ratio与功率RMS Level参数选择右侧菜单Stepped Level Sweep项。
（1）修改测试频率如下图此处与前面步骤2.（2）参考设置的频率要一致。
（2）调整点数Points，使得Step Size的值不大于3mVms，如图所示。
（3）两通道分开扫描：首先关闭通道2，点击start扫描出通道1的曲线；然后勾选Append Graph Data,同样的方法扫描出通道2的曲线。
点击start键开始扫描曲线此状态表示关闭通道2打开通道1.勾选Append GraphData添加通道2的曲线正在扫描通道2的曲线。
（4）失真THD+N Ratio与功率RMS Level曲线如下图如图可看出输入灵敏度和输出功率：X值为输入灵敏度，Y值是功率值。
4.测试失真度THD在Signal Path Setup 中找到THD+N Ratio,点开测试界面如下图。
输入上面测试的灵敏度的值，点击Generator off 变成Generator on，如下图。
5.测试信噪比找到Signal to Noise Ratio 输入灵敏度，点击start，如下图。
这里输入灵敏度的值这里读出失真度与被测机型的频率一致6.测试通道分离度找到Crosstalk,界面如图，输入通道灵敏度，点击start读数。
若选择A-wt.测试的是计权的值。
7.测试输出噪音找到Noise(RMS),直接读数。
APX1000 QUICKSTART GUIDEENGLISHDo NOT make any connections when any device is powered on.Note: Please see the SPEAKER CONNECTION section for important setup information.QUICKSTART GUIDE (ENGLISH)BOX CONTENTSAPX1000 Power cable Quickstart GuideSafety & Warranty Information BookletQUICK SETUP1. Make sure all items listed in the BOX CONTENTS section are included in the box.2. READ SAFETY & WARRANTY INFORMATION BOOKLET BEFORE USING THE PRODUCT.3. Study the connection diagram in this guide.4. Place all devices in an appropriate position for operation.5. Make sure all devices are turned off and all faders and gain knobs are set to "zero."6. Connect all sound sources' outputs to amplifier inputs as indicated in the diagram.7. Connect the amplifier outputs to speakers.8. Plug all devices into an appropriate power source. 9.Switch everything on in the following order: • Sound sources (i.e. microphones, turntables, CD players, etc.) • Mixer • Amplifier • Speakers10.When turning powering down, turn everything off in the following order: • Speakers • Amplifier • Mixer • Sound sourcesCONNECTION DIAGRAMREAR PANEL DIAGRAM41.COOLING FAN - This fan secures cooling for the amplifier. The airflow is from front to rear. The fan speed is electronically regulated depending on the temperature of the power devices. Do not block these fan grills or mount the amplifier in an enclosed rack, which could cause the amplifier to overheat.2. LOW PASS FILTER – This switch activates the built-in low cut filter. All audio below 30 Hz will be removed from the output signal.3. BALANCED COMBO INPUTS – Connect your mixer to the balancedXLR or balanced 1/4" input for that channel.4.OUTPUT MODE SWITCH – The APX 1000 presents three operating modes: Stereo ModeIn this mode, CH 1 and CH 2 operate independently (as a normalstereo amplifier) The CH 1 input signal will be output from the CH 1 output connector, and CH 2 input signal will be output from the CH 2 output connector. Parallel Mono Mode In this mode, CH 1 input signal will be output from the output connectors of both channels.Bridged ModeIn this mode, CH 1 input signal will be output from the bridge-mono output connector. 5.CHANNEL OUTPUTS – Connect your speakers' input jacks to these outputs. • For the binding posts, red is the positive signaland black is the negative signal. Please makesure to respect the speaker polarity when using binding post. Turn off the unit before connecting an audio signal to the binding post to avoid any electric shock! • The SPEAKON outputs are specifically designed to connect to high power speakers. The correct polarityis secured automatically. They prevent shock hazard and they lock-in securely. Please see the SPEAKER CONNECTION section to properly and safely connect your speakers.6.POWER IN – Connect the cable to a standard wall outlet. Be sure the supplied voltage matches the required voltage of the amplifier. Do not connect the amplifier to an outlet that does not match the required voltage; doing so could damage the amplifier.WARNING!: Do not adjust the STEREO/MONO BRIDGE SWITCH when the amplifier is on. WARNING!: Do not allow any wires of adjacent terminals to come in contact with each other. Also, do not connect either positive (red) output to chassis ground.FRONT PANEL DIAGRAM1. POWER SWITCH – Turns the amplifier on/off.2. POWER LED – Illuminates when the amplifier is on.3. LED METERS – Indicates the audio signal level. This LED will light up when the signal at the output is at least -20 dB.4.CLIP – The red "Clip" light indicates the signal is distorting or "clipping," which occurs when the volumeexceeds the amplifier's maximum output. This LED will flash when distortion reaches a level of 0.5%. Consistent clipping can damage your amplifier and speakers. If the signal is regularly clipping, reduce the volume of the amplifier. If it is lit about half the time, the amplifier channel's thermal protection will cause the channel to shut down within a few minutes.5.PROT – The red "Prot" light indicates the output for that channel has turned off to protect your amplifier andspeakers, which can be damaged by excessive volume resulting in clipping. If the meters' red lights are illuminating, decrease the levels of your CHANNEL GAIN knobs. 6. CHANNEL GAIN – This knob controls the channel's output signal.7. COOLING VENTS – These vents help to cool the internal parts of the amplifier when in use. Do not blockthese vents, and keep the vents clean at all times.SPEAKER CONNECTIONSHORT CIRCUIT PROTECTIONOutput short circuit protection protects the output devices of the amplifier from short circuits and stressful loads. If your speaker lines short, the amplifier automatically detects this problem and discontinues operation for that channel. (If one channel's short circuit protection is activated, the other channel will continue to operate normally.) During short circuit protection, the "Clip" and "Protect" LEDs will light simultaneously, and all output from that channel will stop.Short Circuit Protection can often be traced back to the signal output line (i.e., the speaker line). Check the line from the output terminal of the amplifier to the speaker. If this line is still good, check the internal speaker connections and components. (A short circuit can often be traced to a badcable or a bad speaker component and is rarely traced to the amplifier itself.)Bare Wire Connections:When connecting your speakers to the amplifier using bare wires, follow these steps: 1. Unscrew the red and black caps of the binding posts. (Be sure not to completely remove or unscrew the redand black caps.) 2. Strip back the wire insulation 1/2" (13mm). 3. Insert the bare wire into the hole exposed under the binding post cap. 4. After inserting the wire, screw the binding post cap down on the wire.Spade Connector:When connecting your speakers to the amplifier using spade connectors, follow these steps: 1. Unscrew the red and black caps of the binding posts. (Be sure not to completely remove or unscrew the redand black caps.) 2. Insert the spade connectors into the binding posts. 3. Tighten the caps down on the spade connectors.Banana Connectors:When connecting your speakers to the amplifier using banana connectors, follow these steps 1. Be sure that the red and black caps of the binding posts are tightened completely. 2. Insert the banana connectors into the caps of the binding posts. Be sure that the connectors are insertedsecurely.OPERATION IN STEREO MODEThe APX1000 provides three operating modes: stereo mode, parallel (mono) mode and bridged mode, you can decide each specific operating mode according to your actual application circumstance.In STEREO MODE, channel 1 and channel 2 operate independently (as a conventional stereo amplifier). The channel 1 input signal will be output from the channel 1 output connectors, and the channel 2 input signal will be output from the channel 2 output connectors.OPERATION IN PARALLEL MODEIn this mode, the channel 1 input signal will be output from the output connectors of both channels. The channel 2 input jack is not used; the channel 1 and 2 volumes can be adjusted independently. Use the Parallel Mode when you want to drive two speakers with only one input signal keeping separate control of the volume of the two channels. NOTE: Since you are not using the channel 2 input you can use this socket to "daisy-chain" to another amplifier.OPERATION IN BRIDGED MODEIn this mode, the channel 1 input signal will be output from the bridge output connectors. (The 2 binding posts) In this case, use the channel 1 volume control to adjust the volume, keep the volume control of channel 2 turned completely down (counter clockwise). Bridged mode is intended for driving loads with a total impedance of 8 ohms or greater.In Bridge Mode you will combine the power of both channels into one speaker. You will have a large amount of power available so carefully check the power handling of your speaker before operation.RACKMOUNTING TIPS•It is a good idea to mount this in the bottom of a rack frame. Supporting the back of the unit may be necessary for portable or road use. The APX1000 mounts into a standard 19u rackmount.•ALTO amplifiers are well shielded; however, mounting low-level electronics some distance away from power amplifiers is common practice to reduce the possibility of electromagnetic interference into the low levelunits, which may sometimes be unusually susceptible to picking up such interference.•When wiring a rack, it is good installation practice to route all AC wiring along one side of the rack and all audio wiring along the other side to avoid coupling AC-borne interference into the audio.SPECIFICATIONSPOWER SPECIFICATIONS•*******************%THD:4Ohms390W*2•Both channels driven: 8 Ohms 250W*2•Power EIAJ@ 1% THD 4 Ohms 500W*2•Both channels driven: 8 Ohms 270W*2•Bridge Mono Mode: 8 Ohms 1000W*120Hz-20kHz 16 Ohms 520W*1ELECTRICAL SPECIFICATION•INPUT SENSITIVITY: 1.0V•INPUT IMPEDANCE: 10 K ohm unbalanced•FREQUENCY RESPONSE: (at 10dB below rated output power) 20 Hz~25 KHz (+0/-3 dB)•VOLTAGE GAIN: 32 dB•DISTORTION: (SMPTE-1M) <0.5%•S/N ratio:＞110 dB•Inrush Current at initial switch on: 5.85A•Inrush Current after power supply interruption: 6.95AGENERAL SPECIFICATIONS•PROTECTIONS: ON/OFF, muting, DC-fault load grounding relay. Internal fault fuses•CONTROLS Front: AC switch•CONTROLS Rear: Low pass filter, mode selector•SIGNAL INDICATORS: 2 green LED CLIP: 2 red LED•POWER INDICATORS: 1 Blue LED PROTECTION: 1 red LED•INPUT CONNECTORS: Balanced combo•OUTPUT: "Touch-proof" binding posts and speak-on jacks DIMENSIONS•(WxLxH) 483mm x 285mm x 88.8mm; 19” x 11.2” x 3.5”WEIGHT•12.1 lb; 5.4kgMANUAL VERSION 1.1。
audio precision使用手册欢迎使用Audio Precision（以下简称AP），本使用手册将为您提供有关AP音频分析系统的详细信息和操作指南，以帮助您充分了解和正确使用设备。
1. 简介AP音频分析系统是一款高性能的音频测量仪器，可广泛应用于声学、音频工程、通信和消费电子等领域。
它具备准确、快速和可靠的性能，并且提供了丰富的功能和选项，满足各种复杂的音频测量需求。
2. 设备配置AP音频分析系统由主机和外围设备组成。
主机包括控制面板、显示屏和接口，用于控制设备和显示测量结果。
外围设备包括声卡、输入输出模块、麦克风、音箱等，用于数据采集和信号输出。
3. 系统设置在使用AP音频分析系统之前，您需要进行系统设置。
首先，确保所有设备已正确连接，并按照说明书进行安装和调试。
然后，打开主机电源，并进行电源和接口设置。
最后，根据具体要求，调整系统的时间、单位、存储和显示等参数。
4. 测量准备在进行测量之前，需根据具体的测试对象和测量目的，选择合适的外围设备和接口。
例如，若需测量声压级，则需连接麦克风和预放大器；若需测量频率响应，则需连接音箱和功率放大器。
此外，还需进行校准和校验，以确保测量结果的准确性和可靠性。
5. 测量操作AP音频分析系统提供了丰富的测量功能和选项。
在进行测量之前，您可以选择相应的测量类型（如频率响应、失真分析、噪声分析等），并设置相关参数（如测量范围、分辨率、加窗函数等）。
然后，通过控制面板或软件界面，启动和停止测量，并实时显示和记录测量结果。
6. 数据分析AP音频分析系统不仅能够进行实时测量，还可以对已采集的数据进行深入分析。
通过内置的分析工具和算法，您可以进行数据处理、曲线拟合、谱图绘制等操作，从而获取更详尽和全面的分析结果。
此外，还可以将数据导出为图像、报告或其他格式，以便于后续处理和分享。
7. 故障排除在使用AP音频分析系统过程中，可能会遇到一些问题和故障。
一般情况下，您可以参考用户手册或在线帮助文档，了解常见问题的解决方法。
