Y4O-LDMGDrum Module or Digital Drum Set

VOLUME MASTER AUX IN PHONES CLICK UP DOWN F1 F2F3 EXIT MENUCLICKCOACH SONGKIT HI-HATCRASH 1CRASH 2RIDEKITSONG KICKSNARETOM 1TOM 2TOM 3TOM 4 2 THE FCC REGULATION WARNING (for USA) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio fre- quency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning [OLLX\PWTLU[VɈHUKVU[OL\ZLYPZLUJV\YHNLK[V[Y` to correct the interference by one or more of the following measures: ҁReorient or relocate the receiving antenna. ҁIncrease the separation between the equipment and receiver. ҁ*VUULJ[[OLLX\PWTLU[PU[VHUV\[SL[VUHJPYJ\P[KPɈLY- ent from that to which the receiver is connected. ҁConsult the dealer or an experienced radio/TV techni- cian for help. <UH\[OVYPaLKJOHUNLZVYTVKPÄJH[PVU[V[OPZZ`Z[LTJHU void the user’s authority to operate this equipment. PRECAUTIONS PLEASE READ CAREFULLY BEFORE PROCEEDING Please keep this manual in a safe place for future refer- ence. Power Supply Please connect the designated AC adaptor to an AC outlet of the correct voltage. Do not connect it to an AC outlet of voltage other than that for which your instrument is intended. Unplug the AC power adaptor when not using the instru- ment, or during electrical storms. Connections )LMVYLJVUULJ[PUN[OLPUZ[Y\TLU[[VV[OLYKL]PJLZ[\YUVɈ the power to all units. This will help prevent malfunction and / or damage to other devices. Location Do not expose the instrument to the following conditions to avoid deformation, discoloration, or more serious damage: ҁDirect sunlight ҁExtreme temperature or humidity ҁExcessive dusty or dirty location ҁStrong vibrations or shocks ҁ*SVZL[VTHNUL[PJÄLSKZ Interference with other electrical devices Radios and televisions placed nearby may experience reception interference. Operate this unit at a suitable dis- tance from radios and televisions. Cleaning Clean only with a soft, dry cloth.Do not use paint thinners, ZVS]LU[ZJSLHUPUNÅ\PKZVYJOLTPJHSPTWYLNUH[LK^PWPUN cloths. Handling Do not apply excessive force to the switches or controls. Do not let paper, metallic, or other objects into the instru- ment. If this happens, remove the electric plug from the V\[SL[;OLUOH]L[OLPUZ[Y\TLU[PUZWLJ[LKI`X\HSPÄL dservice personnel. Disconnect all cables before moving the instrument. INFORMATION FOR YOUR SAFETY! CAUTION The normal function of the product may be disturbed by Strong Electro Magnetic Interference. If so, simply reset the product to resume normal operation by fol- lowing the owner’s manual. In case the function could not resume, please use the product in other location. 3 Contents Main Features .................................................................4 Panel & Display Description ........................................5 Front Panel ..........................................................................5 Rear Panel ...........................................................................6 Display ................................................................................6 Setup .................................................................................7 Connecting the Pads and Pedals ...........................................7 Getting Ready to Play ..................................................8 Setting Up Power Supply ......................................................8 ;\YUPUN[OL7V^LY6U6Ɉ ......................................................8 (\[V7V^LY6Ɉ....................................................................8 Factory Reset ......................................................................8 Quick Play ........................................................................9 Drum Kits and Sounds ..........................................................9 Selecting a Drum Kit .............................................................9 Selecting a Sound ................................................................9 Playing Techniques ...............................................................9 Drum Kit .......................................................................11 Preset Drum Kit and User Kit ...............................................11 Selecting a Drum Kit ...........................................................11 Editing a Kit ......................................................................11 Editing Sound Parameters (Main) ........................................12 Editing Sound Parameters (Others) .......................................12 2P[,ɈLJ[ ...........................................................................13 ,KP[PUN[OL9L]LYI,ɈLJ[ .....................................................13 ,KP[PUN[OL,8,ɈLJ[ ...........................................................13 Saving User Kit ..................................................................13 Click .................................................................................14 Song .................................................................................15 Playing Preset Songs ..........................................................15 Playing Songs from SD Card ...............................................15 Playing Along with Song Playback ........................................16 Recording .......................................................................17 Start Recording ..................................................................17 Stop and Save Recording ....................…

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inMusic Brand, Inc. 2024-05-31 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: Y4O-LDMG) The applicant: inMusic Brand, Inc. certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Print name: Hill Lien Title: Director of Compliance Signature: inMusic Brand, Inc. 2024-05-31 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: Y4O-LDMG) The applicant: inMusic Brand, Inc. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, Print name: Hill Lien Title: Director of Compliance Signature:

Attestation Statements 2024-05-31 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: Y4O-LDMG) inMusic Brands,Inc. , the undersigned, hereby authorize inMusic Brands,Inc. to act as our designated U.S. agent for service of process, inMusic Brands,Inc. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. inMusic Brands,Inc. accepts the responsibility to act as designated U.S. agent for service of process, provides an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Information： Company name: inMusic Brands,Inc. FRN:0022102461 Contact Name: Hill Lien Address: 200 Scenic View Drive Cumberland, RI 02864, U.S.A Telephone No: 886 2 2717 2389 Ext.77 Email: [email protected] U.S. Agent Information: Company Name: inMusic Brands,Inc. FRN:0022102461 Address: 200 Scenic View Drive Cumberland, RI 02864, U.S.A Contact Name: Hill Lien Telephone No: 886 2 2717 2389 Ext.77 Email: [email protected] Applicant Signature: Agent Signature: (if the agent is different from the applicant) Applicant printed name: Hill Lien Agent printed name: Hill Lien

inMusic Brand, Inc. Long Term Confidentiality Request Letter Date: 2024-05-31 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Drum Module or Digital Drum Set MODEL: LDMG FCC ID: Y4O-LDMG To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the (block diagram/schematics/operational description) required to be submitted with this application be permanently withheld from public review. The above documents are company proprietary information that could never get into the possession of your competition. Please contact me if there is any information you may need. Sincerely, Print name: Hill Lien Title: Director of Compliance Signature:

Updated on 2005/02/07 by Kally Chan inMusic Brand, Inc. To : The Hong Kong Standards and Testing Centre Limited DECLARATION OF IDENTITY Hereby we: Name of Manufacturer: inMusic Brand, Inc. Address of Manufacturer: 200 Scenic View Drive, Cumberland, RI 02864 U.S.A (Name and Address of Manufacturer) Basic Model Number LDMG Basic Brand Name: Basic Product Name: Drum Module or Digital Drum Set Basic Test Report Application Number: DM24050150 (HMD24050004) Declare the Circuit, PCB Layout, Electrical Parts and Outlook of the following product(s) are identical to the basic model: New / Additional Model Number(s): LDLM, CRIMSON, CRIMSON III New / Additional Brand Name(s): New / Additional Product Name: Describe the non-RF boards, and circuitry differences: All models are identical in PCB and schematic designs Describe the RF boards and circuitry differences. All models use the same Bluetooth module Describe the exterior casing and color differences: All models are the same color. If no differences, detail the reasons for obtaining multiple PMN(s)/HVIN(s)/FVIN(s) : Different model for different sellers Remarks: / Signature with Company Chop : Printed Name : Hill Lien DATE: 2024-05-27

inMusic Brand, Inc. Agent Authorization Letter 2024-05-31 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (The Hong Kong Standards and Testing Centre Limited) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Print name: Hill Lien Title: Director of Compliance Signature:

1 External Photo FCC ID: Y4O-LDMG View of The Product View of The Product 2 View of The Product View of The Product 3 View of The Product View of The Product 4 View of The Product View of The Product 5 Adapter

Center Line ALESIS_LDLM_LB ZhangYM Label size65x20mm BackgroundBlack FontsWhite 9V0.5A LDMG 5mm

1 Internal Photo FCC ID: Y4O-LDMG Inner View of the EUT Inner View of the EUT 2 Inner circuit top view Inner circuit bottom view 3 Inner circuit top view RF module view 4 Inner circuit top view 5 Inner circuit bottom view Inner circuit top view 6 Inner circuit bottom view View of BT antenna

RF Exposure Test Requirement: FCC 47CFR 15.247(i) FCC ID: Y4O-LDMG Test Date: 2024-05-27 Mode of Operation: BT Tx mode Requirements: In 15.247(i), an equipment shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the limits in §§ 1.1307. Applications to the Commission for construction permits, licenses to transmit or renewals thereof, equipment authorizations or modifications in existing facilities must contain a statement confirming compliance with the limits unless the facility, operation, or transmitter is categorically excluded, as discussed below. Technical information showing the basis for this statement must be submitted to the Commission upon request. According to KDB447498 D04 General RF Exposure Guidance v01, Appendix B B.2 Blanket 1 mW Blanket Exemption The 1 mW Blanket Exemption of § 1.1307(b)(3)(i)(A) applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power of no more than 1mW, regardless of separation distance. According to KDB447498 D04 General RF Exposure Guidance v01, Appendix B Exemptions for Single RF Sources, B.3 MPE-based Exemption For Multiple RF sources: FCC Rule Part 1.1307(b)(3)(ii): (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). (B) In the case of fixed RF sources operating in the same time-averaging period, or of multiple mobile or portable RF sources within a device operating in the same time averaging period, if the sum of the fractional contributions to the applicable thresholds is less than or equal to 1 as indicated in the following equation. Calculated Result Frequency Distance EIRP Maximum tune-up ERP Exposure Limit Ratio Result (MHz) (cm) (dBm) (dBm) (mW) (mW) Pass/Fail 2480 20 5.861 4.711 2.9587 768 0.006134 Pass 2480 20 4.620 3.470 2.2233 768 0.004518 Pass Remark: Tune-up: ±1 Maximum tune-up ERP= EIRP + 1 - 2.15 Mode for Simultaneous Multi-band Transmission: Radio Access Technology Ratio 1 Ratio 2 Simultaneous Ratio Limit Result Pass/Fail Bluetooth DSS + Bluetooth DTS 0.006134 0.004518 0.010652 1 Pass

WLT8761M antenna Small Size 2.4 GHz PCB antenna 1 INTRODUCTION considerations for complying with regulatory limits when using this design. The suggested antenna design requires no more than 14.4x5.6mm of space and ensures a VSWR ratio of less than 2 across the 2.4 GHz ISM band when c onnected to a 50 ohm source. The PCB antenna used on the WLT8761M reference design is described in this application note. Even if the antenna presented is for a WLT8761M it can be used in all 2.4 GHz designs, especially where small space is required for the antenna.This application note describes the antenna dimensions, the RF performance and Figure 1 :WLT8761M ANTENNA DESIGN The PCB antenna on the WLT8761M reference design is a meandered Inverted F Antenna (IFA). The IFA was designed to match an impedance of 50 ohm at 2.45 GHz. Thus no additional matching components are necessary. 2 Design Goals The reflection at the feed point of the antenna determines how much of the applied power is delivered to the antenna . A reflection of less than -10 dB across the 2.4 GHz ISM band, when connected to a 50 ohm source, was a design goal. Reflection of less than斗O dB, or VSWR less than 2, ensures that more than 90% of the available power is delivered to the antenna. Bandwidth is in this document defined as the f「equency band where mo「e than 90 % of the available power is delivered to the antenna. Another design goal was to fit the size of t he PCB antenna on a WLT8761M and to obtain good pe时ormance also when the dongle is connected to a computer. 2.1 Simulation IE3D from Zeland, which is an electromagnetic simulation tool, was used to design the antenna. The accuracy of the simulation is controlled by the mesh. An increase of the mesh increases the simulation time. Thus, for initial simulations mesh = 1 should be used. When a fairly good result is achieved a higher mesh should be used to obtain more accurate results. Comparison of simulation and measurement results shows that the measured reflection is between the result obtained with mesh = 5 and mesh = 1 ; see Figure 2 for details. 2.2 Figure 2: C。mparisonof Simulation and Measurements Results 2.3 Layout and Implementation Small changes o f the antenna dimensions may have large impact on the performance. Therefore it is strongly recommended to make an exact copy of the reference design to achieve optimum pe斤。rmance. The easiest way to implement the antenna is to import the gerber or DXF file showing the antenna layout. The imported file can be used as a template when drawing the antenna. By using this procedure it should be possible to make an exact copy. If the PCB CAD tool being used does not suppo叫impo时of DXF or gerber files, Figu「e 3 and Table 1 should be used to ensure correct implementation. It is recommended to gene「ate a gerber file for compa「isοn with IFA_USB.spl when making a manual implementation. Most gerber viewers have the possibility to impo同several gerbe「 files at the same time. Thus by placing the gerber file, showing the manually implemented antenna, on top of IFA_USB.spl it is easy to ve「ify that the antenna is correctly implemented. It is also recommended to use the same thickness and type of PCB material as used in the reference design. Information about the PCB can be found in a separate readme file included in the reference design. To compensate for a thicker/thinner PCB the antenna could be made slightly shorter/longer. . Figure 3: Antenna Dimensions Table 1: Antenna Dimensions 3 TEST RESULTS Reflection, radiation pattern and variation of output power acro ss a wide frequency band were measured to verify the pe斤ormance of the PCB antenna. Measurements of the dongle in f「ee space and when connected to a la ptop were performed to verify that the antenna is suitable both fo「 WLT8761M designs and in a standalone application. Free space is in this document interpreted a s a measurement pe斤。rmed without connecting the dongle to a computer. In such a measurement the d ongle is only powered by a battery. 3 .1 Reflecti。n All the 「eflectionmeasurements were performed with a network analyzer connected to a semi-rigid coax cable, which was soldered to the feed point of the antenna. Because of the small size antenna and the small ground plane this kind of measurements is heavily affected by the presence and placement of the coax cable. This influence can「esult in a small uncertainty in resonance frequency and measured 「eflection.Typically different placement of the semi-rigid coax cable could change the resonance frequency with 5 -10 MHz and the reflection with 3 - 4 dB. Fig u『-e 4: Influence of Plastic Encapsulation and Test Pins A small pa门on the WLT8761M PCB is equipped with test pins. These are intended for use during development. This pa时of the PCB will typically be omitted in a final application. The red and green graph on Figure 4 shows that removing this pa同of the PCB has a small impact on the pe 斤ormance. Figure 4 also shows that plastic encapsulation of the dongle will shift the resonance frequency to a lower frequency. This can be compensated by making the antenna slightly shorter. The size of the g「oun d plane af fects the pe付ormance of the PCB antenna. Connecting the WLT8761M to a computer increases the s ize of the ground plane and t hus the performance is affected. Figu「e 5 shows how the pe付ormance i s affected when the WLT8761M is connected to a laptop. In f「ee space the anten na has a bandwidth of app「oximately 250 MHz. When the WLT8761M is c onnected to the laptop the bandwidth is reduced to around 100 MHz, which still is enough to cove「 the who le 2.4 GHz ISM band. ···－ Figure 5: Comparison of Performance JJpplication /\bte ,4/\JJ43 3.2 Radiation Pattern The radiation pattern for the antenna implemented on the WLT8761M reference design has been measured in an anechoic chamber. Figure 7 through Figure 12 shows radiation patterns for three planes ， ×Y ， ×Z and YZ, measured with vertical and horizontal polarization. All these measurement wer…

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1 Test Photo FCC ID: Y4O-LDMG Measurement of Radiated Emission Test Set Up Measurement of Radiated Emission Test Set Up 2 Measurement of Radiated Emission Test Set Up Measurement of Conducted Emission Test Set Up