AEX2200双通道激励器方法及要点

EX3200激励器
EX3200激励器
ULTRAFEX PRO 是全世界销售量最好的心理声学处理器。

它的“自然音色”处理器能有让人膛目结舌的音色，高频通透明亮，低频炉火纯青。

另外还有可调节的环绕声处理器，可灵活地调节立体声的空间效果
简单介绍：
1.IN/OUT 切入或旁通
2.AUTO NR 自动降噪
3.NR SENSIVTIVITY 降噪灵敏度控制
4.发光二极管显示
5.频率选择中高频1KHz---8KHz
6.PROESS 逆时针旋转激励功能被激活
7.HIGH MIX 高频增益
8.SOLO 独奏效果
9. SHIFT 低频转换功能选择低音或极端低音
10. LOW MIX 低音处理增益
11. MODE 低频模式柔软或强劲
12. 环绕声工作状态选择
13. 环绕声处理增益选择
14. 机号
15. 保险丝，可以110和220切换
16. 电源输入口
17. 输入，有卡侬头和6.3的头（平衡接法）
18. 输出，有卡侬头和6.3的头（平衡接法）。

For other service manuals visit our website at:/service_manuals.aspDORNER MFG. CORP .INSIDE THE USA OUTSIDE THE USA P .O. Box 20 • 975 Cottonwood Ave.TEL: 1-800-397-8664TEL: 262-367-7600Hartland, WI 53029-0020 USA FAX: 1-800-369-2440FAX: 262-367-5827851-335 Rev. D90° Adjustable Transfers for 2200 Series, 3200 Series &LPZ ConveyorsSet-up, Operation & Maintenance ManualDorner Mfg. Corp.2851-335 Rev. D90° Adjustable Transfers for 2200 Series, 3200 Series & LPZ ConveyorsTable of ContentsIntroduction......................................................................... 2Warnings - General Safety.................................................. 3Specifications...................................................................... 4Installation........................................................................... 4Required Tools.. (4)Kit Mounting.................................................................... 4Service Parts......................................................................... 7Return Policy (8)IntroductionUpon receipt of shipment:•Compare shipment with packing slip. Contact factory regarding discrepancies.•Inspect packages for shipping damage. Contact carrier regarding damage.•Accessories may be shipped loose. See accessory instruc-tions for installation.Dorner conveyors are covered by the following patentnumbers: 5131529, 5156260, 5156261, 5174435, 5203447, 5265714, 5875883, and corresponding patents and patent applications in other countries.Dorner’s Limited Warranty applies.Dorner reserves the right to make changes at any time without notice or obligation.IMPORTANTSome illustrations may show guards removed. DO NOT operate equipment without guards.851-335 Rev. D3Dorner Mfg. Corp.90° Adjustable Transfers for 2200 Series, 3200 Series & LPZ ConveyorsWarnings - General SafetyA WARNINGThe safety alert symbol, black triangle with white exclamation, is used to alert you to potential personal injury hazards.Climbing, sitting, walking or riding on conveyor will cause severe injury.KEEP OFF CONVEYORS.DO NOT OPERATE CONVEYORS IN AN EXPLOSIVE ENVIRONMENT.A WARNINGExposed moving parts can cause severe injury.LOCK OUT POWER before removing guards or performing maintenance.A WARNINGA Transfer Plate and guiding MUST be installed on discharge end of InfeedConveyor.AWARNINGLoosening stand height or angle adjustment screws may cause conveyor sections to drop down, causing severe injury.SUPPORT CONVEYOR SECTIONS PRIOR TO LOOSENING STAND HEIGHT OR ANGLE ADJUSTMENT SCREWS.A WARNINGDorner cannot control the physicalinstallation and application of conveyors. Taking protective measures is the responsibility of the user.When conveyors are used in conjunction with other equipment or as part of a multiple conveyor system, CHECK FOR POTENTIAL PINCH POINTS and other mechanical hazards before system start-up.A WARNINGExposed moving parts can cause severe injury.DO NOT ATTEMPT ADJUSTMENTS WITH CONVEYOR RUNNING.Dorner Mfg. Corp.4851-335 Rev. D90° Adjustable Transfers for 2200 Series, 3200 Series & LPZ ConveyorsSpecifications•Requires low side conveyors•Maximum recommended part weight is 20 lb (9 Kg) at 50ft/minute (15 M/minute) belt speed •For conveyors up to 12¨ (610 mm) wide •1/4¨ (6 mm) minimum part thickness•Minimum product size:-3/4¨ (19 mm) for 2100 Series conveyor or 3100 Series conveyor with transfer tail option-1-1/4¨ (32 mm) for 3100 Series or LPZ conveyors with standard 3¨ (76 mm) diameter tailInstallationRequired Tools•Hex key wrenches 4 mm & 5 mm •17 mm wrench •Torque wrenchKit MountingIllustration References: 1.Parts as shipped (Figure 1)Figure 12.Identify infeed conveyor (Figure 2,item A) and outfeed conveyor (C). Install pulley transfer plate (B) ondischarge end of infeed conveyor (A). See instructions in your Pulley Transfer Plates Set-up, Operation & Maintenance Manual.Figure 2A WARNINGExposed moving parts can cause severe injury.LOCK OUT POWER before removing guards or performing maintenance.A WARNINGA Transfer Plate and guiding MUST be installed on discharge end of Infeed Conveyor.A Infeed ConveyorB Transfer PlateC Outfeed ConveyorD Outside Turn Guide, 4-ft (1219 mm) LengthE Guide Mounts with 4-1/2¨ (114 mm) Long Shaft (2x)F Guide Mounts with 12¨ (305 mm) Long Shaft (2x)G M6 x 12 mm Low Head Cap Screws (4x)H T-bars (5x)I M6 x 12 mm Socket Head Screws (10x)J Guide Wheel AssemblyK Guide Mounts Angle Bracket LGuide Wheel Angle BracketNOTEThe 90° Transfer Kit is a universal guide kit. The following is an example of a typical installation.DEFGHJE FIKLACB851-335 Rev. D5Dorner Mfg. Corp.90° Adjustable Transfers for 2200 Series, 3200 Series & LPZ ConveyorsInstallation3.Install T-bars (Figure 3,item H) in both infeed conveyor (A) and outfeed conveyor (C) T-slots. See Figure 4 for attaching guide mounts.Figure 34.Loosely attach guide mounts with 4-1/2¨ (114 mm) long shafts (Figure 4,item E) to T-bars (Figure 1,item H) with screws (I).Figure 45.Attach outside turn guide (Figure 5,item D) to shaft of each guide mount (E) with screw (G). Tighten screws to 30 in-lb (3 Nm).Figure 56.Determine arc of guide (Figure 6,item D) and position of guide mounts (E). Adjust guide mounts to create desired guide position.Figure 67.Secure fasteners:•Tighten screws (Figure 1,item I) to 73 in-lb (8 Nm)•Tighten guide mount nuts (Figure 1,item K) to 146 in-lb (16 Nm)8.To stabilize guide (Figure 7,item D), repeat steps 3through 7 to install additional guide mount(s) (F), as required.Figure 79.Trim excess guide (D) as required.10.Install T-bar (Figure 8,item H) in T-slot of outfeedconveyor (C). Loosely attach guide wheel assembly (J) to T-bar with screws (I).Figure 8A WARNINGExposed moving parts can cause severe injury.DO NOT ATTEMPT ADJUSTMENTS WITH CONVEYOR RUNNING.HEEACGEDDEEFDJC HLIDorner Mfg. Corp.6851-335 Rev. D90° Adjustable Transfers for 2200 Series, 3200 Series & LPZ ConveyorsInstallation11.Adjust guide wheel assembly position, as required(Figure 8).12.Secure fasteners:•Tighten screws (Figure 8,item I) to 73 in-lb (8 Nm)•Tighten screw (L) 146 in-lb (16 Nm)13.On the discharge end of the infeed conveyor (Figure9,item A):•Install guiding (M) within 1/4¨ (6 mm) of the guide wheel assembly (J). See instructions provided with guiding.•Install guiding (N) against the outside turn guide (D). See instructions provided with guiding.Figure 9A WARNINGExposed moving parts can cause severe injury.DO NOT ATTEMPT ADJUSTMENTS WITH CONVEYOR RUNNING.A WARNINGTransfer Plate (Figure 1,item B) and guiding (M & N) MUST be installed on discharge end of Infeed Conveyor to eliminate pinch points.DJMNB A851-335 Rev. D7Dorner Mfg. Corp.90° Adjustable Transfers for 2200 Series, 3200 Series & LPZ ConveyorsService Parts111429875361012161415171813Item Part No. Part Description1234014Guide, 4-ft (cut to length required)2920692M Socket Low Head Screw, M6-1.00 x 12mm 3807-1056Guide Rail Clamp Knob 4234009M Horizontal Shaft (short)5807-948Cap 6234010M Spacer T ube7961045MSS Hex Head Cap Screw, M10-1.50 x 45mm 8234012M Angle Bracket9920614M Socket Head Screw, M6-1.00 x 14mm 10200830M Drop-In T -Bar 11234013M Horizontal Shaft (long)12234006UHMW Guide Wheel 13234003M Angle Bracket 14915-218Retaining Ring 15234005M Vertical Shaft 16234007M Spacer T ube 17605279P Washer18920616MSocket Head Screw, M6-1.00 x 16mmDorner Mfg. Corp. reserves the right to change or discontinue products without notice. Allproducts and services are covered in accordance with our standard warranty. All rights reserved. © Dorner Mfg. Corp. 2010DORNER MFG. CORP.975 Cottonwood Ave., PO Box 20Hartland, WI 53029-0020 USATEL 1-800-397-8664 (USA)FAX 1-800-369-2440 (USA)Internet: Outside the USA:TEL 1-262-367-7600FAX 1-262-367-5827Return PolicyReturns must have prior written factory authorization or they will not be accepted. Items that are returned to Dorner without authorization will not be credited nor returned to the original sender. When calling for authorization, please have the following information ready for the Dorner factory representative or your local distributor:1. Name and address of customer.2. Dorner part number(s) of item(s) being returned.3. Reason for return.4. Customer's original order number used when ordering the item(s).5. Dorner or distributor invoice number (if available, part serial number).A representative will discuss action to be taken on the returned items and provide a Returned Goods Authorization (RMA)number for reference. RMA will automatically close 30 days after being issued. To get credit, items must be new and undamaged. There will be a return charge on all items returned for credit, where Dorner was not at fault. It is the customer’s responsibility to prevent damage during return shipping. Damaged or modified items will not be accepted. The customer is responsible for return freight.Conveyors and conveyor accessoriesStandard catalog conveyors 30%MPB, 7200, 7300 Series, cleated and specialty belt50%AquaGard & AquaPruf Series conveyors non-returnable itemsEngineered to order products case by caseDrives and accessories30%Sanitary stand supports non-returnable itemsPartsStandard stock parts30%Plastic chain, cleated and specialty belts non-returnable itemsReturns will not be accepted after 60 days from original invoice date. The return charge covers inspection, cleaning, disassembly, disposal and reissuing of components to inventory. If a replacement is needed prior to evaluation of returned item, a purchase order must be issued. Credit (if any) is issued only after return and evaluation is complete.Dorner has representatives throughout the world. Contact Dorner for the name of your local representative. Our Customer Service Team will gladly help with your questions on Dorner products.For a copy of Dorner's Warranty, contact factory, distributor, service center or visit our website at .For replacement parts, contact an authorized Dorner Service Center or the factory.851-335 Rev. D Printed in U.S.A.。

EX2000型激励器的使用与维护苏华丽【摘要】EX2000型激励器采用数字DDS技术和DSP芯片，广泛使用大规模集成电路，使用单片机控制，具有操作简单，可靠性高、故障率低、便于系统升级等优点，广泛应用于短波发射机中，经过几年的经验积累，掌握了该款激励器的相关性能，现本人将对其在使用和维护方面的认识进行简单总结。

【期刊名称】《电子制作》【年(卷),期】2015(000)015【总页数】1页(P100-100)【关键词】激励器;电源;DSP主板【作者】苏华丽【作者单位】新疆新闻出版广电局节传中心9166台【正文语种】中文1 EX2000型激励器工作原理EX 激励器是由开关电源、电源滤波板、控制板、DSP 主板组成，其各单元作用如图所示。

1.1 开关电源该激励器的开关电源是永明电源厂生产的4100DIXA 型电源，输入电压为直流45V，输出多路电压，分别有5V/4A、12V/2A、-12V/1.5A、18V/2A，其中12V 直接供给散热风扇，其余输出电压（包括12V）送到电源滤波板。

1.2 电源滤波板电源滤波板主要对开关电源输出的-12V、12V、5V、18V 电压进行滤波，滤波后送入DSP 主板，使DSP 主板能够正常工作。

1.3 控制板激励器的各类功能接口连接都在控制板上进行。

控制板的作用主要有以下几点：第一，通过控制板连接，使LED 显示接口与显示板接口相连，使LED 显示电路工作；第二，PTT、报警白噪声控制接口的连接，在控制板上连接后，当PTT 信号为低电平时，激励器输出信号，PTT 信号为高电平时停止输出，当激励器出现故障后，幅度自动降至4.8dB；第三，保护接口的连接，使激励器的正向、反向保护电压调节范围有控制板的电位器进行调节；第四，与发射机谐波滤波器的连接，从而使激励器可以控制谐波滤波器的八个滤波板；第五，与DSP 主板进行连接，使DSP 主板接收控制命令；第六，与激励器主板键盘进行连接，从而使人机可以交互。

FMX-222-Channel Portable Audio MixerThank you for purchasing an Azden product.Please read this manual thoroughly before using thisproduct.○1 POWER INDICATOR: When the power switch (○12)Is on, the LED will light in green. When the battery level becomes too low for proper operation, the LED will turn red. When this happens, replace the batteries with fresh “AA” alkaline batter-ies.○2 CHANNEL 1& 2 INPUT LEVEL CONTROLS: Each knob controls the input volume level of the microphone connected to the corresponding input (○9). Zero is the lowest (quietest) setting while 10 is the highest (loudest). ○3 CHANNEL 1 & 2 OUTPUT SELECTORS: Let you select the output of each channel between LEFT, CENTER and RIGHT. ○4 MASTER LEVEL CONTROL: This knob controls the overall volume level of all connected sources (microphone and/or line -level devices).○5 CHANNEL 1 & 2 LIMITER SWITCHS: Each input channel has a switchable limiter. After setting the input volume level, turn this switch on. The limiter circuit will be activated and reduce the possibility of overload distortion from very loud sounds without affecting normal sound volume. If you prefer the overall sound quality of the mixer without the limiter circuit engaged, leave this switch off.○6 INPUT PEAK LEVEL INDICATOR: When the mixer detects signal overload and distortion, this LED will light in red. Lower the input level by turning the corresponding input level control (○2) counterclockwise. ○7 CHANNEL LEFT & RIGHT OUTPUT LEVEL INDICATORS: These indicators will show the output volume level of the CH L and CH R outputs (○13&○14). When the indicators show red, reduce the volume level by turning the input level control knobs (○2) or the master level control knob (○4). ○8 BATTERY COMPARTMENT: Open the lid by lifting it while pushing the tab.● Safety Instructions* It is very important to read and understand this manual completely before use. Keep this manual for future refer -ence. * When connecting/disconnecting cables and/or changing the phantom power setting or input level settings, turn theinput level control knobs to zero or power switch off.* When the phantom DC48V power is not needed, make sure the phantom switch is in the off position. * Before turning the phantom DC48V switch on, make sure your condenser microphone is designed to handle 48V DCor the microphone may be damaged. Check the microphone’s manual or with the manufacturer.* Do not use other batteries than “AA” alkaline batteries. Do not mix fresh batteries with used ones. * Remove the batteries if the mixer will not be used for a long period of time to prevent battery fluid leak. ● Front Control Panel● Side Panels○9CHANNEL 1 & 2 XLR INPUTS: Connect the 3-pin XLR output of a microphone, wireless receiver or line level audio compo-nent to CH 1 and/or CH 2. Push the XLR connector into the input jack until it locks. To remove the XLR connector, press the “PUSH” tab while pulling the connector out.○10INPUT LEVEL SELECTOR: The following 2 settings are available for each channel: MIC HI: maximum -5dBu (2kΩ)MIC LO: maximum -21dBu (2kΩ)○11PHANTOM DC 48V SWITCH: Each channel has its own phantom DC 48V power setting. When using a dynamic micro-phone, make sure that the corresponding phantom DC 48V switch is in the OFF position. When using the condenser micro-phone that requires 48V DC external power, turn the corresponding phantom DC 48V switch ON. When you turn the phan-tom DC 48V switch ON or OFF, make sure to turn the volume level control knobs (○2) zero or turn the power switch (○12) OFF.○12POWER SWITCH○13 & ○14CHANNEL LEFT & RIGHT XLR OUTPUTS: Connect a cable from these outputs to the MIC or LINE input of your cam-era or audio recorder. The outputs accept a standard 3-pin female XLR connector.○15STEREO MIC OUTPUT: This mini-connector (3.5mm) output is designed for video cameras or audio recorders with mini-connector mic-level inputs. This output is stereo (dual-channel) and unbalanced. It is recommended to use a stereo-to-stereo mini cable (not included) to connect this output to the input of your video camera or audio recorder. Because theFMX-32a is equipped with low-impedance XLR inputs and a mini-connector output, users of cameras/audio recorders withmini-connector inputs can now use high-quality microphones with XLR outputs.○16 MONITOR PHONES OUTPUT JACK: A 1/4” (6.3mm) jack for headphones.○17LEVEL VOLUME CONTROL: Controls the volume level of the monitor phones output (○16). Zero is the lowest and 10 is the highest setting.○18EXTERNAL DC IN CONNECTOR: To power the mixer with external 12V DC power. An optional AC adaptor, part number BC-27, is available. For information, visit AZDEN CORPORATION200 Valley Road, Suite 101, Mt. Arlington, NJ 07856Phone: 1-973-810-3070 Email:******************* Web Site: Printed in USALIMITED TWO -YEAR WARRANTYAzden Corporation warrants, to the first purchaser, that the Azden brand product purchased is free from defects in material and workmanship. Azden’s sole obligation under this warranty shall be to provide, without charge, repair or replacement (at Azden’s sole discretion), within two years from the date of purchase. The cost to ship a failed product to and from Azden or to its dealer shall not be covered by this warranty. A dated receipt acts to establish the date of purchase and is all that is required for warranty service.This warranty is the sole and exclusive express warranty given with respect to the product and all other warran-ties, expressed or implied, are hereby excluded. Neither Azden, nor the dealer who sells this product, is responsi-ble for indirect, incidental or consequential damages.This warranty does not extend to any defect, malfunction or failure caused by misuse, abuse, accident, Act of God, faulty hookup, unauthorized modification, connecting this product to equipment for which this product is not intended or defective associated equipment. Please read your owner’s manual carefully.● SpecificationsIINPUT LEVEL: Max Input Level Max Gain Input ImpedanceMIC LO -20dBu +58dB 2kΩMIC HI -3dBu +42dB 2kΩMAX OUTPUT LEVEL:CH L & CH R: +15dBu (5kΩ) UNBALANCED OUTPUT: -20dBu (2kΩ) MONITOR OUTPUT: +1.5dBu (32Ω) FREQUENCY RESPONSE: 20 - 20,000Hz (+0/-0.5dB)NOISE LEVEL: -119dBuT.H.D.: Less than 0.005% (1kHz, +19dBu)PHANTOM POWER: 48V ±1.5VPOWER SOURCE: 4 “AA” Alkaline batteries/DC 12V 200mABATTERY DURATION: Up to 15 hours in continuous useDIMENSIONS: 145mmL x 120mmW x 53.5mmH / 5 11/16”L x 4 3/4”W x 2 1/8”HWEIGHT: 670 g / 23.63 oz (without batteries)。

激励器的使用方法
激励器（Exciter）是一种音频设备，用于增强音频信号的音量和动态范围。

下面是激励器的一般使用方法：
1.连接信号源：将音频信号源（如音乐播放器、混音器等）
的输出通过信号线连接到激励器的输入端。

确保连接正确，并检查信号线的稳定连接。

2.调整输入增益：激励器通常具有输入增益控制旋钮。

根据
输入信号的强度，适当调整输入增益以确保进入激励器的
信号在合适的范围内，避免过载或失真。

3.调整声音处理参数：激励器通常提供多种声音处理参数，
如音量、压缩、EQ（均衡器）等。

根据音频需求和个人偏
好，适当调整这些参数，以获得所需的声音效果。

4.设置输出水平：激励器还有输出控制，用于调整激励器的
输出水平。

根据需要将输出水平设置为适合目标音响系统
或扬声器的水平。

5.调试和优化：进行一些测试，调试和优化激励器的效果。

可能需要通过试听和实际演奏来调整参数，以获得最佳音
效。

请注意，具体的激励器使用方法可能会因激励器型号和品牌而有所不同。

Pressure Independent Valve, 2-way, Internalthread, (EPIV)• Nominal voltage AC/DC 24 V• Control modulating, communicative, Hybrid• For closed chilled and hot water systems• For modulating control of air-handling andheating systems on the water side• Communication via BACnet MS/TP, ModbusRTU, Belimo-MP-Bus or conventional control• Conversion of active sensor signals andswitching contactsTechnical dataElectrical data Nominal voltage AC/DC 24 VNominal voltage frequency50/60 HzNominal voltage range AC 19.2...28.8 V / DC 21.6...28.8 VPower consumption in operation 6 WPower consumption in rest position 5 WTransformer sizing12 VAConnection supply / control cable 3 ft. [1 m], 6 x 0.75 mm²Conductors, cables AC/DC 24 V, cable length <100 m Data bus communication Communicative control BACnet MS/TPModbus RTUMP-BusFunctional data Valve size [mm]2" [50]Operating range Y 2...10 VOperating range Y note 4...20 mA w/ ZG-R01 (500 Ω, 1/4 W resistor)Input impedance100 kΩ (0.1 mA), 500 ΩOperating range Y variable0.5...10 VOperating modes optional VDC variablePosition feedback U 2...10 VPosition feedback U note Max. 1 mAPosition feedback U variable VDC variableSetting Fail-Safe Position NC/NO or adjustable 0...100% (POP rotaryknob)Bridging time (PF) variable0...10 sRunning Time (Motor)90 sRunning time fail-safe<35 sSound power level Motor45 dB(A)Noise level, fail-safe61 dB(A)Adjustable flow rate V'max25...100% of V'nomControl accuracy±5%Min. controllable flow1% of V'nomConfiguration via NFC, Belimo Assistant AppFluid Chilled or hot water, up to 60% glycol max(open loop/steam not allowed)Fluid temperature-10...120°C [14...250°F]Close-off pressure ∆ps200 psi••••Functional dataDifferential Pressure Range 5...50 psi or 1...50 psi see flow reductions chart in tech docFlow characteristic equal percentage or linear Body Pressure Rating 360 psi Leakage rate 0% leakage GPM66Installation position upright to horizontal (in relation to the stem)Servicing maintenance-free Manual overrideexternal push button Measuring data Measured values FlowFlow measurementMeasuring principle Ultrasonic volumetric flow measurement Measuring accuracy flow ±2%Min. flow measurement 0.5% of V'nom Measurement Repeatability ±0.5% (Flow)Sensor TechnologyUltrasonic with glycol and temperature compensation Safety data Degree of protection IEC/EN IP66Degree of protection NEMA/UL NEMA 4EnclosureUL Enclosure Type 4Pressure equipment directive CE according to 2014/68/EU Quality Standard ISO 9001UL 2043 CompliantSuitable for use in air plenums per Section 300.22(C) of the NEC and Section 602 of the IMC Rated impulse voltage supply / control 0.8 kV Ambient humidity Max. 100% RH Ambient temperature -22...122°F [-30...50°C]Storage temperature-40...176°F [-40...80°C]MaterialsValve bodyNickel-plated brass body Flow measuring pipe brass body nickel-plated Valve plug Stainless steel Stem stainless steel Stem seal EPDM (lubricated)Characterized disc TEFZEL®SeatPTFE Pipe connection NPT O-ring EPDM Ballstainless steelTermsAbbreviationsPOP = Power off position / fail-safe position PF = Power fail delay time / bridging timeSafety notesThis device has been designed for use in stationary heating, ventilation and air-conditioning systems and must not be used outside the specified field of application, especially in aircraft or in any other airborne means of transport.Outdoor application: only possible in case that no (sea) water, snow, ice, insolation or aggressive gases interfere directly with the actuator and that is ensured that the ambient conditions remain at any time within the thresholds according to the data sheet.Only authorized specialists may carry out installation. All applicable legal or institutional installation regulations must be complied during installation.The device contains electrical and electronic components and must not be disposed of as household refuse. All locally valid regulations and requirements must be observed.Mode of operationFlow measurement Pre-charging time (start up)Delivery condition (capacitors)Product featuresThe HVAC performance device is comprised of three components: characterized control valve (CCV), measuring pipe with flow sensor and the actuator itself. The adjusted maximum flow (V'max) is assigned to the maximum control signal (typically 100%). The HVAC performance device can be controlled via communicative signals. The fluid is detected by the sensor in the measuring pipe and is applied as the flow value. The measured value is balanced with the setpoint. The actuator corrects the deviation by changing the valve position. The angle of rotation α varies according to the differential pressure through the control element (see flow curves).With the supply voltage the integrated condensors will be charged.Interrupting the supply voltage causes the valve to be moved to the selected fail-safe position by means of stored electrical energy.All flow tolerances are at 68°F [20°C] & water.Flow rate curvesThe capacitor actuators require a pre-charging time. This time is used for charging thecapacitors up to a usable voltage level. This ensures that, in the event of a power failure, the actuator can move at any time from its current position into the preset fail-safe position.The duration of the pre-charging time depends mainly on following factors:– Duration of the power failure – PF delay time (bridging time)Typical pre-charging time[d] = Power failure in days[s] = Pre-charging time in secondsPF[s] = Bridging timeCalculation example: Given a power failure of 3 days and a bridging time (PF) set at 5 s, the actuator requires a pre-charging time of 14 s after the power has been reconnected(see graphic).The actuator is completely discharged after delivery from the factory, which is why the actuator requires approximately 20 s pre-charging time before initial commissioning in order to bring the capacitors up to the required voltage level.Bridging time Setting fail-safe position Power failures can be bridged up to a maximum of 10 s.In the event of a power failure, the actuator will remain stationary in accordance with the set bridging time. If the power failure is greater than the set bridging time, the actuator will move into the selected fail-safe position.The bridging time set at the factory is 2 s. It can be modified on site in operation by means of the Belimo service tool MFT-P.Settings: The rotary knob must not be set to the "PROG FAIL-SAFE" position!For retroactive adjustments of the bridging time with the Belimo service tool MFT-P or with the ZTH EU adjustment and diagnostic device only the values need to be entered.The rotary knob fail-safe position can be used to adjust the desired fail-safe position 0...100% in 10% increments. The rotary knob always refers to the adapted angle-of-rotation range. In the event of a power failure, the actuator will move into the selected fail-safe position. Settings: The rotary knob must be set to the «Tool» position for retroactive settings of the fail-safe position with the Belimo service tool MFT-P. Once the rotary knob is set back to the range 0...100%, the manually set value will have positioning authority.Control characteristics The fluid velocity is measured in the measuring component (sensor electronics) and converted to a flow rate signal.The control signal Y corresponds to the power Q via the exchanger, the volumetric flow isregulated in the EPIV. The control signal Y is converted into a linear characteristic curve andprovided with the V'max value as the new reference variable w. The momentary controldeviation forms the control signal Y1 for the actuator.The specially configured control parameters in connection with the precise flow rate sensorensure a stable quality of control. They are however not suitable for rapid control processes, i.e.for domestic water control. U5 displays the measured flow as voltage (factory setting).Parametrizing V'max with ZTH:U5 refers to the respective V'nom, i.e. if V'max is e.g. 50% of V'nom, then Y = 10 V, U5 = 5 V.Parametrizing V'max with PC-Tool:In the PC-Tool, the maximum flow rate to which U5 refers can be set individually. If V'max ischanged (e.g. to 70% V'nom), the U5 flow range is also automatically changed to the same value(e.g. 70% V'nom: U5 = 10 V). This adjustment can be reversed by entering a value manually (U5flow range = 100%: U5 refers to V'nom).As an alternative, U5 can be used for displaying the valve opening angle.Block diagramCreep flow suppressionConverter for sensorsControl signal inversionHydronic balancing Combination analogue - communicative(hybrid mode)Manual override Flow controlV'nom is the maximum possible flow.V'max is the maximum flow rate which has been set with the highest control signal DDC. V'maxcan be set between 25% and 100% of V'nom.Given the very low flow speed in the opening point, this can no longer be measured by the sensor within the required tolerance. This range is overridden electronically.Opening valveThe valve remains closed until the flow required by the control signal DDC corresponds to 1% of V'nom. The control along the flow characteristic is active after this value has been exceeded. Closing valveThe control along the flow characteristic is active up to the required flow rate of 1% of V'nom. Once the level falls below this value, the flow rate is maintained at 1% of V'nom. If the level falls below the flow rate of 0.5% of V'nom required by the control signal DDC, then the valve willclose.Connection option for a sensor (active or with switching contact). In this way, the analog sensor signal can be easily digitized and transferred to the bus systems BACnet, Modbus or MP-Bus. This can be inverted in cases of control with an analog control signal. The inversion causes the reversal of the standard behavior, i.e. at a control signal of 0%, is equal to V'max, and the valve is closed at a control signal of 100%.With the Belimo tools, the maximum flow rate (equivalent to 100% requirement) can be adjusted on-site, simply and reliably, in a few steps. If the device is integrated in the management system, then the balancing can be handled directly by the management system. With conventional control by means of an analog control signal DDC, BACnet, Modbus, or MP-Bus can be used for the communicative position feedback.Manual control with push-button possible - temporary. The gear train is disengaged and the actuator decoupled for as long as the button is pressed.AccessoriesTools Description TypeConverter Bluetooth / NFC ZIP-BT-NFCWire colors:1 = black 2 = red 3 = white 5 = orange 6 = pink 7 = greyFunctions:C1 = D- = A C2 = D+ = BElectrical installationSupply from isolating transformer.The wiring of the line for BACnet MS/TP / Modbus RTU is to be carried out in accordance with applicable RS485 regulations.Modbus / BACnet: Supply and communication are not galvanically isolated. Connect earth signal of the devices with one another.Modbus RTU / BACnet MS/TP with analogue setpoint (hybrid mode)BACnet MS/TP / Modbus RTUCable colors:1= black 2 = red 3 = white 5 = orange 6 = pink 7 = greyBACnet / Modbus signal assignment:C1 = D– = A C2 = D+ = BConnection with active sensor, e.g. 0...10 V @ 0...50°CPossible voltage range:0...32 V (resolution 30 mV)Connection with switching contact, e.g. Δp monitorRequirements for switching contact:The switching contact must be able to accurately switch a current of 16 mA @ 24 V.Operation on the MP-BusFunctionsFunctions with specific parameters (Parametrisation necessary)Operating controls and indicatorsLED display green On:Device starting upOff:No power supply or wiring error Flashing:In operation (Voltage ok)Flow direction NFC interfaceManual override button Press button:Gear train disengages, motor stops, manual override possible Release button:Gear train engages, standard mode. Device performssynchronisation.Cover, POP button POP buttonScale for manual adjustment Manual override button Press button:Gear train disengages, motor stops, manual override possible Release button:Gear train engages, standard modePush-button (LED yellow)Press button:Acknowledgment of addressingPush-button (LED Green)Press button:Triggers angle of rotation adaptation, followed by standard mode123423456Recommended installation positionsInstallation position in return Water quality requirementsServicing Flow direction Cleaning of pipes Prevention of stressesSetting fail-safe positionSetting emergency setting position (POP)Installation notesThe ball valve can be installed upright to horizontal. The ball valve may not be installed in ahanging position, i.e. with the stem pointing downwards.Installation in the return is recommended.The water quality requirements specified in VDI 2035 must be adhered to.Belimo valves are regulating devices. For the valves to function correctly in the long term, they must be kept free from particle debris (e.g. welding beads during installation work). The installation of a suitable strainer is recommended.Ball valves, rotary actuators and sensors are maintenance-free.Before any service work on the control element is carried out, it is essential to isolate the rotary actuator from the power supply (by unplugging the electrical cable if necessary). Any pumps in the part of the piping system concerned must also be switched off and the appropriate slide valves closed (allow all components to cool down first if necessary and always reduce the system pressure to ambient pressure level).The system must not be returned to service until the ball valve and the rotary actuator have been correctly reassembled in accordance with the instructions and the pipeline has been refilled by professionally trained personnel.The direction of flow, specified by an arrow on the housing, is to be complied with, since otherwise the flow rate will be measured incorrectly.Before installing the valve, the circuit must be thoroughly rinsed to remove impurities. The valve must not be subjected to excessive stress caused by pipes or fittings. EP200+AKRX-E N4 • en-us • 2023-05-24 • Subject to change 11 / 11Inlet section Split installation Behaviour in case of sensor failure In order to achieve the specified measuring accuracy, a flow-calming section or inflow section inthe direction of the flow is to be provided upstream from the flow sensor. Its dimensions shouldbe at least 5x DN.The valve-actuator combination may be mounted separately from the flow sensor. The directionof flow of both components must be observed.General notesIn case of a flow sensor error, the EPIV will switch from flow control to position control.Once the error disappears, the EPIV will switch back to the normal control setting.DimensionsDimensional drawingsTypeWeight EP200+AKRX-E N415 lb [6.7 kg]AB C D E F 26.6" [675]13.9" [353]12.0" [305]10.2" [260] 3.4" [86] 3.4" [86]。

双通道步进电机工作原理
双通道步进电机是一种常用的电机类型，其工作原理基于电磁感应和电流控制。

首先，双通道步进电机由两组电磁线圈构成（通常为A相和
B相），每组线圈有两个端子（通常为A+和A-、B+和B-），并且线圈之间90度相位差。

当电流通过A相线圈时，会在该线圈产生一个磁场，根据洛
伦兹力的原理，该磁场会与电流方向垂直的磁场相互作用，从而产生一个力矩。

根据右手定则，当电流通过A相线圈时，该力矩会使电机转
动到与A相线圈磁场方向对齐的位置。

同样的原理适用于B相线圈。

通过控制A相和B相线圈的电流，可以使电机在不同的位置停下或旋转。

这种控制方式通常由驱动器或控制器实现。

双通道步进电机的转动步数取决于电流的控制方式和频率。

通过改变电流的大小和方向，可以实现电机以一个固定步距旋转、连续旋转或反向旋转。

总结而言，双通道步进电机通过控制不同组线圈的电流来产生旋转力矩，从而实现精确控制和定位。

Sabine2220的使用方法转贴SABINE 反馈抑制器的设置在扩声系统中，困扰很多音响师的两大难题，一个是噪声问题，另一个就是声反馈问题（一般是表现出啸叫，所以很多人习惯把声反馈直接称作是啸叫）。

这两个话题已经有很多人在探讨了，噪声问题的一些解决方法，以后再另写文章。

本文试图从陷波滤波器的参数调整上简单介绍一下Sabine2220的使用方法。

1 啸叫声的产生和类型啸叫的产生几乎都是由于音频信号出现了正反馈造成的。

在扩声系统中主要有两大类可能性：第一是整套系统出现声反馈，这种情况经常发生，也就是在话筒和扬声器之间形成了环路，信号被不断放大，最终超出了系统的有效放大能力而产生啸叫。

(如图1) 当然出现这种信号环路有很多原因，例如：话筒的指向角直接对准扬声器；还有就是有指向性的话筒在非指向性范围内的电平抑制能力比较差，也就是指话筒的前后抑制比；另一种情况就是我们经常说的房间共振频率（房间的共振频率也叫简正频率，也叫驻波，是房间的固有的物理特性，房间有容积，有长、宽、高，就一定存在简正频率的，只要简正频率不出现简并现象，一般就会被吸声体吸收，也就不会引起共振频率振幅的过大夸张，啸叫也就不成问题了。

但是如何避免简并现象的产生，这就是我们通常说的建筑声学，由于这是另外的学科，而不属于本文的讨论范畴，请参阅其它相关文章）。

第二是系统内部出现反馈，例如：通道信号→辅助输出→效果器→输出通道→又去了辅助输出→又转回了效果器。

这样就形成了一个从辅助通道到效果器之间的小循环，当环路电平增益达到一定数值，就会产生啸叫。

只要周边设备与调音台之间采用这种并联连接，都有可能产生这种啸叫。

解决的方法也很简单，就是把效果器过回来的信号不要再从辅助输出通道输出就行了，切断了环路，自然就不会啸叫了。

2 抑制反馈的几种方法从前面讨论的产生啸叫的原因可以看出，要想消除反馈只能从切断反馈链路上着手。

目前常用三种方式来抑制啸叫：一是采用滤波器降低反馈频率的电平增益，二是采用移频器将频谱搬移，三是采用叫ECHO CANCELLER的技术，按照延时的电平调整，将系统中存在的反馈声隔开，避免了啸叫的产生。

专业音频激励器的使用技巧专业音频激励器的使用技巧（八）音频激励器实际上是一种谐波发生器，利用人的心理声学特性，对声音信号进行修饰和美化的音频处理设备。

一、相关声学原理（一）、什么是基音？大家应该知道自然界的声音并不是由单一的频率组成的，大多数都是一种复合音，而基音就是指复合音中频率最率最低的成分。

基音就像房屋的地基一样，一种音色中如果没有足够的基音，那整个音色都会改变。

所以对我们音响师来说，调好声音的基音部分是至关重要的。

（二）、什么谐波？谐波在物理学中叫分音，电声学中叫谐波，音乐中叫泛音。

我们知道大自然中万物所发出的声音是各种各样的，都有着不同的音色及复杂的波形，这种复杂的波形除了基本频率的波形之外（基音），还会有一系列的谐振频率，也就是所谓的，泛音，它与主音调有一定的，倍音关系，而且泛音还可分可偶次泛音与奇次泛音：2、4、6、8……等为偶尔泛音，3、5、7、9……等为奇次泛音，如基音频率为50Hz时，其2次泛音为100 Hz，3次为泛音则是150 Hz。

（三）、谐波的作用知道了什么是谐波（泛音），那泛音有什么用呢？我们以钢琴为例；钢琴的最低音频率在30 Hz左右，最高音频率在4000 Hz左右，而钢琴有十几个泛音，它的调频可达20000 Hz左右。

而这些泛音中又可分为低频泛音、中频泛音和调频泛音。

如果低频泛音适中，音色就会表现得混厚、丰满；中频泛音适中，音色就会表现得圆润、自然、和谐；高频泛音知中，音色就会表现得明亮、清秀、解析力强、具有穿透力。

因此一种声音除了有最基本的基音外，还会有相应的泛音，而这些泛音对音色的影响是到头重要的。

例如：各种乐器用不同的演奏方法能产生数量和强弱各不相同的泛音成分，因此不同的也会具有不同的音色。

二、关于激励器的应用激励器的设计目的是恢复音频信号所丢失的谐波成份，有效地扩展高频带宽并提高信噪比，从而提高声音还原的清晰度和表现力。

而且，这些谐波的电平我，对信号的电平几乎不产生影响。

EX822激励器的使用说明书
1、IN、OUT放在“IN”；相应的指示灯点亮，这样激励器才会进入工作状态。

2、TUNE入在12点位置；此时旋钮要根据激励频率的需要来灵活调整。

3、HIGH、NORMAL放在所需位置：综合处理时入在NORMAL，其它处理放在HIGH。

4、MIX（谐波量）和GIRTH（低音量）：开始调整时都放在最小的位置。

5、提升MIX，真到听到镶边声（声音变亮）：要注意听，这种声音并不是特别明显。

6、调TUNE，用以改善声音的音色或穿透力；要注意辨别音色，调整时可用音乐和话筒轮流调整，一般调整至类似时钟的11-14点钟位置。

7、重复调整MIX，直到谐波效果满意为止：一般调整到类似时钟的13-15点钟位置。

8、提升OVERTHANG，调到其指示灯闪亮，一般调整到类似时钟的11-14点钟位置，低音时间太短没有丰满度，太长容易浑浊，要小心调整。

9、提升GIRTH，同时调整OVERTHANG直到人声效果满意为止；一般调整到类似时钟的10-13点钟位置。

Sabine FBX2220的具体调整方法如下：（1）由于室内两个通道的音箱摆放位置不同，产生啸叫的频率也会有区别，所以要一个一个通道来调整Sabine FBX2220，可以用Bypass 按钮先关掉另一个通道。

（2）按住Reset按钮，使指示灯全部熄灭，Clip闪烁。

此时Sabine FBX2220进入了Turbo mode也就是可以进行调试了。

（3）把话筒按照实际使用时的位置摆放好，缓慢的推起话筒通道的推子，这时就会发现Sabine FBX2220很快就抑制了将要发生的反馈。

不断的提升系统增益电平，一直到12个滤波器指示灯全部被电亮，调试工作就结束了，系统将自动退出Turbo mode。

然后将这个通道Bypass，去调试另一个通道。

* 注意：在您做现场演出的过程中，不要按动Reset按钮，这样做是很危险的，此时Turbo mode被激活，所有的滤波器回零，很可能会出现强烈的啸叫。

需要另外说明的几个问题：（1）滤波器的数量问题：Sabine FBX2220每个通道有12个滤波器，共24个。

按厂家说明的情况是可以通过Set Total No.按钮来减少实际使用的滤波器数目。

方法是这样的：按住Set Total No.4秒然后放开它，当指示灯的点亮数目和你要求的一致时，再按一下Set Total No.就可以了。

除了特殊的情况下，这个功能一般不使用的。

因为出厂时全部24个滤波器已经全部激活了。

（2）滤波器宽度的调整问题：Sabine FBX2220允许调整滤波器的宽度（就是前面提及的Q值），在1/10octave按钮选择其中的一种。

Fifth octave点亮时是使用1/5oct，这种Q比较宽，虽然精确度不高，但是反馈的抑制能力比较强，多用来处理人声的反馈，如会议室，失真小，但是反馈抑制能力差一些，一般用来处理音乐类信号。

（3）固定滤波器于动态滤波器的区别：Sabine FBX2220的全部24个滤波器都乐意工作在固定（Fixed）滤波器和动态（Dynamic）滤波器两种模式下。

AX-T2200 1.Front panel description1,2,3,4.Voltage selection switch(AC750V/500V/250V/1000V).5.Resistance Range selection switch(RANGE).6.Power switch:auto-lock power switch(POWER).7.High voltage indicator:LED display.8.Measurement button.9.LCD display:Display the measured data and units10.Instrument model.11.L:Terminal for connecting the measured circuit.12.G:Terminal for protection,connect the electrode wire of protection loop to“G”terminal when the measuredobject is required to add the protection loop to eliminatethe leakage effect.13.ACV:Input terminal of AC Voltage measurement.14.E:Terminal for connecting the ground of the measured object.15.Terminal of AC adaptor()2.Technic property2.1.General propertyDisplay:84.8×59.8mm LCD display,max.“1999”Over range indicator:display“1”Power:battery LR6(1.5V)×6(or external AC adaptor),no battery indicator.Auto power off(approx.15miutes after turning on)Power consumption:consumption is less than300mw at unload measurement. Operation environment:Temperature0°C-40°C.Relative humidity30%RH-85RH. Dimension:175(L)×110(W)×70(D)mmWeight:630g(including batteries).2.2.Technical propertyMeasured voltage250V±10%;500V±10%;1000V±10%RANGE:()0.1MΩ—20MΩ;0.1MΩ—50MΩ;0.1MΩ—100MΩ;();20MΩ—500MΩ;50MΩ—1000MΩ;100MΩ—2000MΩAccuracy±(4%of reading±2digits)Shot current:1.8mA;1.8mA;1.6mAMedian resistance2MΩ;2MΩ;5MΩTerminal position L.EACV750V Accuracy:±(1.0%of reading+6digits).Terminal position:ACV GInput impedance:1MΩFrequency response:(50~200)HzNote:Median resistance:to ensure that the voltage of both sides of measurement is not less than90%of lower limit of resistance measurement of measurement voltage normal value.3.Operation descriptionOpen the battery case and set up6pcs of batteries(see the following pictures),note the polarity of batteries.Press the button of“POWER”.Select the right voltage(250V/500V/1000V/AC750V)according to the requirement of measurement.Select the right range(RANGE)(except AC750V),according to the requirement of measurement.Connect the electrode of the measured object to the relative terminal of the instrument.When measuring cable,connect G Terminal to the protection loop.Press the button of measurement and start it,turn the knob right to lock the button;when the value is stable,get the reading from LCD.Connect the input line“E”to the ground of the measured object,and“L”to the circuit of the measured object; require line“L”to hang in the air.2000MΩ￿When“1”is displayed,over range is indicated,and should turn to the higher range to get reading; When the range button is in“PRESSED“position,it expresses that the insulated resistance exceeds2000MΩ. Hang the instrument on your neck to save your hands to make measurement.4.Resistance measurement5.Safety Notices•When voltage measurement selection button does not be pressed,it is possible to appear the high voltage at the output voltage terminal.•When measuring,first check the measurement voltage selection and if the indication of the measurement voltage on LCD is in accordance with the voltage needed•To ensure the safety of operation,the operation cannot be done until the measured object removed from the power supplied by the electricity grid system,and should be discharged fully to testify that the measured object does not have any danger of power.•When measuring,it is not allowed to handle the terminal of measurement to make sure the accuracy of reading and personal safety.•Keep the instrument away from the high temperature place,and from the direct sunshine to avoid affecting the life of the LCD.•When low battery symbol of“BATTERY”appears,please replace the batteries in time.Take the batteries out when storage to avoid the leakage of batteries to damage the instrument.•When unload,reading is normal,it won’t affect the measurement.•When measuring MΩ,if the reading is unstable,it is likely caused by the interference of surrounding and unsteadiness of the insulated materials,it will make the reading stable to connect the“G”terminal to the shield side of the measured object•To ensure the safety of measurement and reduce the interference,the test leads adopt silicone rubber materials, please do not change the leads at will.•When the external AC adaptor supplies the power,the inside batteries are disconnected and the batteries can’t be charged at the time.Note:please select()power supply method.6.Sets of instrumentDigital Insulation Tester1pc10A test leads1setOperation Manual1copyShoulder strap1pc。

压限器调整方法压限器每单一通道从左到右依次共有7个调整旋钮，分别为：1、噪声门门限电平(THRESHOLD)，这个调到时钟9点多一点的位置；2、噪声门的压缩比(RATIO)，这个调到时钟的14点位置；3、阈值(THRESHOLD)，这个很重要，一般调整到时钟13点位置；4、压缩比(RATIO)，一般演出系统调整到时钟的13点位置，的士高系统调整到时钟的14点多的位置；5、启动时间(ATTACK)，一般调整到时钟的10点钟位置；6、恢复时间(RELEASE) 一般调整到时钟的14点钟位置；7、输出电平（OUTPUT GAIN），一般调整到时钟的12点多一点的位置激励器：STRATOS（这个旋钮给音源增加高频谐波）〈1〉IN/OUT加与不加激励器效果选择〈2〉TUNE（调谐）激励器信号基波频率调节〈3〉MIX（混合）谐波量输出控制〈4〉HIGH/NORMAL。

HARMONICS。

其中HIGH表示不产生高频谐波，适用于人声和乐器等单一声源；NORMAL表示产生普通谐波，适用于整体音乐等音域宽广的乐曲。

以上四个功能键被称为听觉激励器部分（AURALEXCITER）可对高频谐波和声音的穿透力进行调整。

〈5〉OVERHANG（低音保持时间）低音长度调节〈6〉GIRTH（低音量）低音强度调节。

电子分频器的调整方法1、MASTER-LEVEL：对通道信号输入电平的调整很重要，就像对调音台通道增益的调整一样，第一步的音量很关键。

一般调整在类似时钟12点的位置就比较合适了，不需要做大的调整。

2、LOW-LEVEL：对低音输出音量的调整要根据分频点和系统中低音音箱的数量来决定，一般调整在类似时钟12点和14点的位置。

同调整时还要注意看LOW-MUTE低音音量静音按钮有没有按下，否则也不会有低音信号送出去。

3、LOW-MUTE：低音音量静音按钮。

按下此按钮可以切断LOW-LEVEL低音输出的音量。

这主要是为了对比低音和高音的效果，正常使用中当然不要按下它了。

静电激励器法校准方法我跟你说，静电激励器法校准这事儿，我一开始真的是瞎摸索。

我就知道这肯定不简单，但没想到这么麻烦。

我一开始就想，不就是个校准嘛，按照以前校准其他东西的方法来就行。

我就直接把仪器接上，按照常规步骤设置参数。

结果呢，根本不行，出来的数据完全不对劲。

我当时就懵了，这到底咋回事呢。

后来我仔细看了看静电激励器的说明书，密密麻麻的字，看得我头疼。

但是没办法，还得硬着头皮看。

我发现我之前那些常规设置有些地方不太适用于这个静电激励器。

比如说电压的调节范围，之前我就按照经验设得太宽泛了。

再一次尝试的时候，我就根据说明书上给的建议值仔细调整电压。

这个电压调节就像调收音机的频道一样，你得一点点地找那个精准的点。

可我感觉还是不太对，数据虽然比之前好了点，但还是不准确。

我又犯了一个傻错误，我没太注意环境因素。

就像你煎鸡蛋，温度和湿度还有风向都会影响鸡蛋煎的效果一样，静电激励器校准的时候，环境的温湿度对结果影响还挺大的。

我那时候在一个湿度比较大的地方做校准，后来换到一个干燥一点、温度也比较稳定的房间再试，嘿，数据就有点靠谱了。

接着我又研究信号传输这一块。

我之前觉得只要线路都接好了就万事大吉，哪知道这里面也有好多讲究。

就像水管子，看起来都接好了，但如果有点小缝隙漏水，那水流量就不对了。

信号传输也一样，如果线路有一点点干扰或者接触不好，校准结果就会偏差很大。

我把每条线路都仔细检查了一遍，确保连接非常稳固，接口也没有生锈或者脏污之类的。

还有就是校准频率的选择。

这就像是你在选跑步的速度，选对了可能跑得很顺畅，选错了就不行。

我试了好几个不同的频率，记录每次的数据。

有些频率下数据波动特别大，有的就相对稳定。

最后就确定了那个比较稳定的频率来做校准。

不过说实话，有些时候我还是不太确定到底哪种情况是完全正确的。

到现在我都还在时不时地琢磨呢。

但总的来说，从弄错了各种各样的事儿到现在有点小成果，这些经历也让我明白了校准静电激励器得注重细节，说明书要看透，环境要选好，线路要查好，频率也要找合适的。