NE7CS-22502.4GHz 40 Channel Analog Modulation Cordless Phone

Citi Sound Electronic Limited

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Application Details

Equipment Class: DXT - Part 15 Low Power Transceiver, Rx Verified
Date of Grant: Feb 07, 2003
Application Purpose: Original Equipment
Date of Application: Feb 07, 2003
Equipment Note: 2.4GHz 40 Channel Analog Modulation Cordless Phone
Frequency Range: 2474.00000000 - 2475.95000000
Company: Citi Sound Electronic Limited
Country: Hong Kong

Documents & Files

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

INSTRUCTION MANUAL 2.4GHz CORDLESS PHONE Please read carefully before operation this unit IMPORTANT SAFETY INSTRUCTIONS When using your telephone equipment, basic safety precautions should always be followed to reduce the risk of fire , electric shock and injury to persons, including the following 1. Read and understand all instructions 2. Do not use the telephone near water, for example, near a bath tub, wash bowl, kitchen sink, or laundr y tub, in a wet base, or near a swimming pool. 3. Avoid using a telephone (other then a cordless type) during an electrical storm. There may be a remote risk of electric shock from lightning. 4. Operate this telephone only with the correct electrical voltage in your shown on the label or in the owner’s manual. If you are not sure of the voltage in your home, consult your dealer or local power company. 5. Do not allow anything to rest on the power cord. Do not install the phone where people will walk on the cord. 6. Do not overload wall outlets and exten sion cords. This can increase to risk of fire or electric shock. 7. Never push objects of any kind through slots in the phone. They could touch dangerous voltage points or short out part that could result in a risk of fire or electric shock. Never spill liquid of any kind on the telephone. 8. To reduce the risk of el ectric shock, do not take th is telephone apart. When service or repair on this telephone , take it to a qualified service representative. Opening or removing covers may expose you to dangerous voltage or other risks. Incorrect re assembly can cause electric shock when the appliance is used. 9. Unplug this telephone from the wall outlet and consult a qualified service representative in any of the following situations: a. When the power supply cord is frayed or damaged, b. If liquid has been spilled into the telephone. c. If the product has been exposed to rain or water. d. If the telephone does not operate normally by following the operating instructions. Adjust only those controls may result in damage and will often require extensive work by a qualified technician to restore the telephone to normal operation. e. If the telephone has been droppe d or the case has been damaged. f. If the telephone exhibits a distinct change in performance. 10. Avoid using a telephone during an electrical storm. There may be remote risk of electric shock from lightning. 11. Do not use the telephone to report a gas leak in the vici nity of the leak. 12. Never install telephone wiring during a lightning storm. 13. Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. 14. Never touch uninsulated telephone wi res or terminals unless the telephone line has been disconnected at the network interface. 15. Use only the power cord and batteries indicated in this manual. Do not dispose of the battery pack in fire. They may explode. Check with local codes for possible special disposal instructions. CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions SAVE THESE INSTRUCTIONS IMPORTANTES MESURES DE SÉCURITÉ Certaines mesures de sécurité doivent être prises pendant l utilisation de matérial téléphonique afin de réauire les risques d incendie, de choc éléctrique et de blessures. En voici quelquesunes: 1. Ne pas utiliser l appareil près de l ean, p,ex., près d une baignolre, d un lavabo, d un évier de cuisine, d un bac à laver. Dans un sous-sol humide ou près d une piscine. 2. Éviter d utiliser le téléphone (sauf s il s agit d un appareil sans fil) pendant un orage électrique. Caci peut présenter un risque de choc électrique causé par la foudre. 3. Ne pas utiliser l appareil téléphonique pour signaler une fuite de gaz s il est situé près de la fuite. 4. Utiliser seulement le cordon d alimentation et le type de plies indiqués dans ce manual. Ne pas jeter les piles dans le feu : elles peuvent exploser. Se conformer aux réglements pertinents quant à l élimination des plies. 5. ATTENTION-Il y a danger d explosion s il y a remplcement incorrect de la batterie. Remplacer uniquement avec une batterie du même type ou d un type équivalent recommandé par le constructeur. Mettre au rebut les batteries usagées conformément aux instructions du fabricant. 1 2 CONSERVER CES INSTRUCTIONS BATTERY SAFETY CAUTION: To reduce the risk of fire or personal injury, read and follow these instructions: 1. Use only the following type and size battery pack: SANIK 03/01 Ni-Cd AA 300mAh 3.6V, SANIK Battery Co. Ltd. Ni-Cd Batter Pack: SANIK Ni-Cd 2/3AA 300mAh 3.6V 2. Do not open or mutilate the battery pack. Released electrolyte is corrosive and may cause damage to the eyes or skin. It may be toxic if swallowed. 3. Exercise care in handing the battery pack to prevent shorting the battery with conductive materials such as ri ngs, bracelets and keys. The battery or conductor may overheat and cause burns. 4. Charge the battery pack provided with or identified for use with this product only in accordance with the instructions and limitations specified in this manual. ATTENTION: The product that you have purchased contains a rechargeable battery. The battery is recyclable. At the end of its useful life, under various state and local laws, it may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details for details in your area for recycling options or proper disposal. FEATURE LIST: 2.4GHz Operation Frequency. 40-Channels Auto-Scanning or Manual Selectable. 1’048’576 Automatic Digital Security Code. Pre-Dialing with Clear LCD for Handset. Flash and Last Number Redial Function. Low battery Indicator on LCD. CHARGE LED Indicator. Receiver Volume High/Norm selector. Tone/Pulse Dial mode selector on the Base unit. Name Book function. Touch Any Key To Answer Incoming …

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Users Manual

Consumer Information: This equipment complies with Part 68 of the FCC rules and the requirements adopted by the ACTA. On the bottom of this equipment is a labe l that contains, among other information, a product id entifier in the format US:AAAEQ##TXXXX. If requested, this number must be provided to the telephone company. An applicable certification jacks Universa l Service Order Codes (USOC) for the equipment is provided (i.e., RJ11C ) in the packaging with each piece of approved terminal equipment. A plug and jack used to connect this equipm ent to the premises wiring and telephone network must comply with the applicable FCC Part 68 rules and requirements adopted by the ACTA. A compliant telephone cord and modular plug is provided with this product. It is designed to be connected to a compatible modular jack that is also compliant. See installation instructions for details. The REN is used to determine the number of devices that may be connected to a telephone line. Excessive RENs on a telephone line may result in the devices not ringing in response to an incoming call. In most but not all areas, the sum of RENs should not exceed five (5.0). To be certai n of the number of dev ices that may be connected to a line, as determined by the total RENs, contact the local telephone company. [For products approved after July 23, 2001, the REN for this product is part of the product identifier that has the format US:AAAEQ##TXXXX . The digits represented by ## are the REN without a decimal point (e.g ., 03 is a REN of 0.3). For earlier products, the REN is s eparately shown on the label. If this equipment causes harm to the telephone netwo rk, the telephone company will notify you in advance that te mporary discontinuance of service may be required. But if advance notice isn't practical, the telephone company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary. The telephone company may make changes in its facilities, equipment, operations or procedures that could affe ct the operation of the equipment. If this happens the telephone company will provide advance notice in order for you to make necessary modifications to maintain uninterrupted service. Please follow instructions for repairing if any (e.g. battery replacement section); otherwise do not alternate or repair any parts of device ex cept specified. Connection to party line service is subject to state tariffs. Contact the state public utility commission, public service commission or corporation commission for information. This equipment is hearing aid compatible. NOTICE: If your home has specially wired alarm equipment connected to the telephone line, ensure the installation of this [equipment ID] does not disable your alarm equipment. If you have questions about what will disable alarm equipment, consult your telephone company or a qualified installer. Should you experience trouble with this equipment, please contact ( company name or service center in the U.S.A. and phone number ) for repair or warranty information. If the equipment is causing harm to the telephone network, the telephone company may request that you disconnect the equipment until the problem is resolved. NOTICE: According to telephone company reports, AC electrical surges, typically resulting from lightning strikes, are very destructive to telephone equipment connected to AC power sources. To minimize damage from these types of surges, a surge arrestor is recommended. Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void t he user’s authority to operate the equipment. NOTE: 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 ag ainst harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful 13 14 interference to radio communications. However, there is no guarantee that inte rference 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 the equipment off and on, the user in encouraged to try to correct the interference by one or more of the following measures. Reorient or relocate the receiving antenna. Increase the separation betw een the equipment and receiver. Connect the equipment in to an outlet on a ci rcuit different form that to which the receiver is needed. Consult the dealer or an experienc ed radio/TV technician for help. If shielded cables or special accessories are required for compliance, a statement must be included which instructs t he user to employ them, e.g., Shielded cables must be used with this unit to ensure compliance with the Class B FCC limits. The shipping address of the repair center is: Southern Telecom Inc 14c 53rd Street Brooklyn, NY. 11232 Should you have any questions or problems concerning this product, please contact our customer service department at: 1-718-567-0536

External Photos

External photos FCC ID: PE7CS-2250 External photos FCC ID: PE7CS-2250

Internal Photos

Internal photos FCC ID: PE7CS-2250 Base assembly (View 1) Base assembly (View 2) Internal photos FCC ID: PE7CS-2250 Base Main PCB comp side Base Main PCB solder side Internal photos FCC ID: PE7CS-2250 Base Oscillator PCB comp side Base Oscillator PCB solder side Internal photos FCC ID: PE7CS-2250 Handset assembly Handset Main PCB comp side Internal photos FCC ID: PE7CS-2250 Handset Main PCB display side Handset Oscillator PCB comp side Internal photos FCC ID: PE7CS-2250 Handset Oscillator PCB solder side

Operational Description

Model CS-2250 Technical Description Base Description: Varistor -protect circuit: The CSP301M is used to protect circuit. Ring detect: DBL393 is used to detect the ring signal. Photocouplers Used TC521 to interface between circuits with different ground potentials, replace isolation transformers and electromagnetic relays. MCU: The MCU is used to control the line interface, Charge, Ring Detect, RF PLL and LOW BATTERY detect. 2400MHz RF Module: KA3361B and KB8825B are used, which consisted of transmitter and receiver. Voltage regulator: KA7805 is used to regulate the voltage. Antenna: It is using an inside 50ohm antenna, it permanently attached on RF module. Handset Description: MCU: The MCU is used to control the keyboard, Buzzer, Charge Detect, Ringing, RF PLL and LOW BATTERY detect. 2400MHz RF Module: KA3361B and KB8825B are used, which consisted of transmitter and receiver. Antenna: It is using an inside 50ohm antenna, it permanently attached on RF module.

Schematics

2250ap1.sch-1 - Sat Nov 16 08:46:51 2002 2250ap1.sch-2 - Sat Nov 16 08:47:24 2002 2.4gap1.sch-1 - Sat Nov 16 08:48:15 2002

Test Report

• The test results reported in this report shall refer only to the sample actually tested and shall not refer or be deemed to refer to bulk from which such a sample may be said to have been obtained. • This report shall not be reproduced except in full without prior authorization form Intertek Testing Services Limited FCC ID: NE7CS-2250 Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2741 1693 Citi Sound Electronic Limited Application For Certification 2.4GHz 40 Channel Analog Modulation Cordless Phone (FCC ID: NE7CS-2250) WO# 0213358 TL/Ann Choy November 19, 2002 INTERTEK TESTING SERVICES FCC ID: NE7CS-2250 i LIST OF EXHIBITS INTRODUCTION EXHIBIT 1: General Description EXHIBIT 2: System Test Configuration EXHIBIT 3: Emission Results EXHIBIT 4: Equipment Photographs EXHIBIT 5: Product Labelling EXHIBIT 6: Technical Specifications EXHIBIT 7: Instruction Manual EXHIBIT 8: Security Code Information INTERTEK TESTING SERVICES FCC ID: NE7CS-2250 ii MEASUREMENT/TECHNICAL REPORT Citi Sound Electronic Limited - MODEL: CS-2250, CL-241, CL-242, CL-243, MC-912, 257813 FCC ID: NE7CS-2250 This report concerns (check one:) Original Grant X Class II Change Equipment Type : Cordless Telephone (example : computer, modem, transmitter, etc.) Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until : date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37 ? Yes No X If no, assumed Part 15, Subpart C for intentional radiator - the new 47 CFR [12-18-01 Edition] Provision. Report prepared by: Tommy Leung Intertek Testing Services. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Phone : 852-2173-8538 Fax: 852-2741-1693 INTERTEK TESTING SERVICES FCC ID: NE7CS-2250 iii Table of Contents 1.0 General Description.........................................................................................................2 1.1 Product Description.........................................................................................................2 1.2 Related Submittal(s) Grants ............................................................................................3 1.3 Test Methodology ............................................................................................................3 1.4 Test Facility .....................................................................................................................3 2.0 System Test Configuration .................................................................................................5 2.1 Justification ......................................................................................................................5 2.2 EUT Exercising Software................................................................................................5 2.3 Support Equipment List and Description........................................................................6 2.4 Measurement Uncertainty ...............................................................................................7 2.5 Equipment Modification..................................................................................................7 3.0 Emission Results ...................................................................................................................9 3.1 Field Strength Calculation .............................................................................................10 3.2 Radiated Emission Configuration Photograph - Base Unit ..........................................11 3.3 Radiated Emission Data - Base Unit .............................................................................12 3.4 Radiated Emission Configuration Photograph - Handset .............................................15 3.5 Radiated Emission Data - Handset................................................................................16 3.6 Radiated Emission on the bandedge..............................................................................19 3.7 Line Conducted Configuration Photograph - Base Unit...............................................21 3.8 Line Conducted Emission Data - Base Unit .................................................................22 4.0 Equipment Photographs ...................................................................................................25 5.0 Product Labelling ...............................................................................................................27 6.0 Technical Specifications ....................................................................................................29 7.0 Instruction Manual ............................................................................................................31 8.0 Security Code Information ...............................................................................................33 INTERTEK TESTING SERVICES FCC ID: NE7CS-2250 iv List of attached file Exhibit type File Description filename Test Report Test Report report.doc Operation Description Technical Description descri.pdf Test Setup Photo Radiated Emission for Base config photos.doc Test Setup Photo Radiated Emission for Handset config photos.doc Test Report Emission Plot emission.pdf Test Setup Photo Conducted Emission config photos.doc Test Report Conducted Emission Test Result conduct.pdf External Photo External Photo external photos.doc Internal Photo Internal Photo internal photos.doc Block Diagram Block Diagram block.pdf Schematics Circuit Diagram circuit.pdf ID Label/Location Label Artwork and Location label.pdf User Manual User Manual manual.pdf User Manual FCC Information fcc information.pdf INTERTEK TESTING SERVICES FCC ID: NE7CS-2250 1 EXHIBIT 1 GENERAL DESCRIPTION INTERTEK TESTING SERVICES FCC ID: NE7CS-2250 2 1.0 General D…

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Test Report

Intertek Testing Services ETL SEMKO Report No.:0213358 Talk Mode Ctrl No.:N/A PAGE 1 Tested By:Hong, Report No.:0213358 Scan Settings (1 Range) |--------- Frequencies -----------||----------- Receiver Settings ------------| Start Stop Step IF BW Detector M-Time Atten Preamp OpRge 450k 30M 5k 10k PK 20ms AUTO LN OFF 60dB Final Measurement: x QP Meas Time: 1 s Subranges: 16 Acc Margin: 20dB Transducer No. Start Stop Name 21 9k 30M EW0698 0 10 20 30 40 50 60 70 dBuV 80 0.45 30 MHz 110 FCC15B Intertek Testing Services ETL SEMKO Report No.:0213358 Talk Mode Ctrl No.:N/A Tested By:Hong, Report No.:0213358 Scan Settings (1 Range) |--------- Frequencies -----------||----------- Receiver Settings ------------| Start Stop Step IF BW Detector M-Time Atten Preamp OpRge 450k 30M 5k 10k PK 20ms AUTO LN OFF 60dB Final Measurement Results: no Results

Test Setup Photos

The Worst Case Configuration Photographs FCC ID: PE7CS-2250 Radiated Emission – Base Front View Rear View The Worst Case Configuration Photographs FCC ID: PE7CS-2250 Radiated Emission – Handset Front View Rear View The Worst Case Configuration Photographs FCC ID: PE7CS-2250 Conducted Emission Front View Rear View The Worst Case Configuration Photographs FCC ID: PE7CS-2250 Conducted Emission Side View

Test Setup Photos