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MNJ49240T40 Channel Intercom/Monitor

Dorel Juvenile Group

Application Details

Equipment Class
DXT - Part 15 Low Power Transceiver, Rx Verified
Date of Grant
Nov 14, 1999
Application Purpose
Original Equipment
Date of Application
Oct 28, 1999
Equipment Note
40 Channel Intercom/Monitor
Frequency Range
902.80000000 - 904.75000000
Company
Dorel Juvenile Group
Country
United States

Documents & Files

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Users Manual

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Block Diagram

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Cover Letter(s)

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ID Label/Location Info

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Operational Description

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Test Report

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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

Safety 1st® Grow-With-Me Intercom Monitor Owner’s Guide No. 49240 Introduction Thank you for purchasing the Safety 1st Grow-With-Me Intercom Monitor. This is a multifunctional, state-of-the-art monitor that features a convenient intercom mode that allows two way communication between the parent’s unit and the baby’s unit. This unique monitor allows you to soothe baby with your voice and communicate directly back and forth as the child grows older, thus offering you years of extended use. The baby’s unit has continuous transmission that sends your baby’s sounds to the parent’s unit. The parent’s unit contains a talk switch with a lock-out feature for parental control, thus providing complete 2-way communication. By using 900MHz technology, these units provide superior clarity with an extended range of up to 1000 feet. The baby’s unit can also be simply converted to a fully portable toddler unit by removing it from its base and easily clipping it to the child’s clothing. Both units feature unique “rubberized” bases that allow them to placed on dresser tops and counters more securely. The parent’s unit may be clipped to a belt for additional mobility, and utilizes and audio and visual alarm to indicate signal loss. The units have 4 channels to minimize outside interference and offer additional privacy. The parents’ unit may be used with AC power or with 4 AAA batteries (not included) for portability. The baby’s detachable transmitter is recharged from its AC powered base, providing hours of continuous portable use. We are sure that you will find the Grow-With-Me Intercom Monitor convenient and easy to use. to insure that you benefit from all of the great features that your monitor offers, and to make sure that you use it properly, we urge you to: PLEASE READ all instructions carefully before using this product and keep these instructions for future reference. If you have any questions, please call our consumer relations number at (800) 721-3389 CAUTION: • THE GROW-WITH-ME INTERCOM MONITOR IS NOT INTENDED TO REPLACE RESPONSIBLE AND PROPER PARENTAL SUPERVISION. • YOU SHOULD CHECK YOUR CHILD’S ACTIVITY AT REGULAR INTERVALS AS THIS MONITOR WILL NOT ALERT PARENTS TO THE SILENT ACTIVITIES OF A CHILD. WARNING: Changes or modifications to this unit not expressly approved by Safety 1st, Inc. could void user’s authority to use equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Safety Instructions (caution flags/graphics) WARNING: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVERS. NO SERVICEABLE PARTS INSIDE. REFER TO SAFETY 1ST CONSUMER RELATIONS: (800) 723-3065. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS PRODUCT TO WATER OR MOISTURE. NEVER TOUCH THE END OF THE ADAPTER CORD WHEN THE ADAPTER IS PLUGGED INTO AN ELECTRICAL OUTLET. READ INSTRUCTIONS: All the safety instructions should be read before the Grow- With-Me Intercom Monitor is operated. RETAIN INSTRUCTIONS: The safety instructions should be retained for future reference. HEED WARNINGS: All warnings on the Grow-With-Me Intercom Monitor and operating instructions should be adhered to. FOLLOW INSTRUCTIONS: All operating instructions should be followed. WATER AND MOISTURE: The Grow-With-Me Intercom Monitor should not be used near water, for example, near a bath tub, wash bowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool, etc. VENTILATION: The Grow-With-Me Intercom Monitor should be placed so that its location does not interfere with proper ventilation of the unit. For example, it should never be situated on a bed, sofa, rug or similar surface that may block ventilation. HEAT: The Grow-With-Me Intercom Monitor should be kept away from heat sources such as radiators, heat registers, stoves or other appliances that produce heat. AC POWER SOURCE: The Grow-With-Me Intercom Monitor should be connected only to the AC adapters supplied with the unit. POWER CORD PROTECTION: The power supply cord should be routed so that it is not likely to be walked on or pinched by items placed upon or against it. Pay particular attention to the cord at the plug, convenience receptacle, and at the point it exits from the AC adapters. CLEANING: Use a dry cotton cloth to keep the 2-Way Grow-With-Me Monitor free from dust. Do not use water! NON-USE PERIODS: The power cords of the Grow-With-Me Intercom Monitor should be unplugged from the outlet when unused for long periods of time. The batteries should also be removed during these periods. OBJECT AND LIQUID ENTRY: Care should be taken so that objects do not fall onto the product, and liquids are not spilled into the enclosure through the openings. DAMAGE REQUIRING SERVICE: The Grow-With-Me Intercom Monitor should be serviced by qualified personnel when: A: The power supply cord or plug has been damaged. B: Objects have fallen or liquid has been spilled onto the product. C: The Monitor has been exposed to rain. D: The Monitor does not appear to operate normally or exhibits a marked change in its performance. E: The Monitor has been dropped or the enclosure damaged. THE USER... CHILD. Contents Parent’s Unit (Receiver) Baby’s Unit with detachable portable toddler’s unit (Transmitterr) Rechargeable battery (included with portable toddler’s unit) (2) AC Adapters (LD 0f: separated baby unit; parent unit; two AC adapters; rechargeable battery) Batteries Required (Optional) (4) AAA alkaline batteries (not included) Features and Components - Parent’s unit 1 Power/Volume Dial 2 Channel Switch 3 Talk/Talk-Lock-out Buton 4 Power/Low Battery Indicator 5 Sound Lights/Audio-Visual Out-Of-Range Alarm 6 Antenna 7 Speaker 8 Microphone 9 AC Adapter Jack 10 Belt Clip 11 Keyhole for optional wall mounting 12 Battery Compartment (4 - AAA) (LD of pare…

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Operational Description

1 Memorandum To:Larry Stillings, Compliance Worldwide CC:Cliff Brick, Dan Desimone, Safety1st, Inc. From:Ronald Pace, Safety1st, Inc. Date:05/21/01 Re:Model 49240 Circuit Description The 900 MHz “Grow with Me” Intercom Monitor model 49240 will be referred to as the equipment under test (EUT) in this report. The EUT is a nursery monitoring system designed to be a high quality, low cost audio two-way monitor for home use. This monitor will transmit audible sounds to and from the Child Unit and Parent Unit. The frequency band chosen for this product is the 902-928 MHz ISM band. This product is part of an ongoing family of nursery monitors provided by Safety 1 st . The Child and Parent units operate on one of four RF channel pairs. The units are full- duplex and their associated RF frequencies are listed in the attached in channel table. An external switch controls the channel selection on both units. Child Unit – Device Operation When in transmit mode (default), the microphone picks up the room sounds and amplifies the signal through an audio amplifier. This signal is controlled by an automatic gain control (AGC) circuit to limit the FM modulation. The amplified audio signal is coupled directly into the audio input of the Samsung FM transceiver module. The transceiver module form Samsung is a complete full-duplex, 900 MHz, crystal controlled FM modulator/demodulator system. The RF transceiver input/output is connected to the external fixed antenna. When in receive mode, the RF signal is collected at the antenna input of the transceiver module and FM demodulated to an audio signal. The recovered audio signal is amplified to a speaker for sound recovery. A 3.6V NiCAD battery or an AC/DC wall adapter powers the unit. Parent Unit – Device Operation The Parent device operation is the same as the Child unit with the exception that the Parent unit requires a push-to-talk button to go into transmits mode. Receive mode is the default for the Parent unit. Four “AAA” alkaline batteries or an AC/DC wall adapter powers the unit.

Test Report

Compliance Worldwide, Inc. - P. O. Box 233 - Canterbury, NH 03224 603-783-4775 Fax 783-4775 http://www.cw-inc.com TEST NUMBER - 268-99 FEDERAL COMMUNICATIONS COMMISSION PART 15.249 CERTIFICATION TESTING 902 - 928 MHz Subpart C - Intentional Radiators for Safety 1ST, Inc. 210 Boylston Street Chestnut Hill, MA 02167 800-962-7233 of GROW WITH ME 49240T FCCID#: MNJ49240T on October 27, 1999 by Larry K. Stillings _____________________________________ Larry K. Stillings Compliance Worldwide, Inc. - P. O. Box 233 - Canterbury, NH 03224 603-783-4775 Fax 783-4775 http://www.cw-inc.com TEST NUMBER - 268-99 Safety 1ST, Inc. GROW WITH ME - 49240T TABLE OF CONTENTS • Test Description • Test Results and Conclusions • Test Procedures • Part 15 Subpart C Test Limits • Measurement Uncertainty Budget and Calculations • Test Facility Description • Test Setup and Connection Information • Test Measurements and Results Radiated Measurements Radiated Output Power & Occupied Bandwidth Conducted Measurements • Photographs Radiated Test Setup (Front & Rear) Conducted Test Setup (Front & Rear) Exterior and Interior Photographs of Product Compliance Worldwide, Inc. - P. O. Box 233 - Canterbury, NH 03224 603-783-4775 Fax 783-4775 http://www.cw-inc.com TEST NUMBER - 268-99 Safety 1ST, Inc. GROW WITH ME - 49240T TEST DESCRIPTION 1. TEST OBJECTIVE To test the GROW WITH ME 49240T to FCC Part 15.239, Subpart C limits and write a report. 2. E.U.T. DESCRIPTION GENERAL The GROW WITH ME 49240T is a 2 way baby monitor that operates in the 902 to 928 MHz band and contains 40 channels. Pre-programmed software allows four of the forty channels to be selected between 925.30 MHz and 927.25 MHz in 50 kHz steps. Currently, the four channels used are 926.1 MHz, 926.3 MHz, 926.5 MHz and 926.7 MHz. The GROW WITH ME 49240T is a transceiver that typically is in transmit mode until it receives a signal from a second transceiver that places it into receive mode. SERIAL NUMBERS: Pre-production prototype Compliance Worldwide, Inc. - P. O. Box 233 - Canterbury, NH 03224 603-783-4775 Fax 783-4775 http://www.cw-inc.com TEST NUMBER - 268-99 Safety 1ST, Inc. GROW WITH ME - 49240T TEST RESULTS AND CONCLUSIONS PRODUCT TESTED - GROW WITH ME MODEL NUMBER - 49240T RADIATED TEST RESULTS The test results show that the emissions radiated from this equipment are in compliance with FCC Rules, Part 15, Subpart C, Section 15.209. OCCUPIED BANDWIDTH & OUTPUT POWER The test results show that the output power and occupied bandwidth of this equipment are in compliance with FCC Rules, Part 15, Subpart C, Section 15.239. CONDUCTED TEST RESULTS The test results show that the emissions conducted through the power line from this equipment are in compliance with FCC Rules, Part 15, Subpart C, Section 15.207. ANALYSIS AND CONCLUSIONS Based upon the radiated and conducted measurements we find that this equipment is within the limits of the FCC Rules, Part 15, Subpart C. NOTES(Special conditions unique to this test) None Compliance Worldwide, Inc. - P. O. Box 233 - Canterbury, NH 03224 603-783-4775 Fax 783-4775 http://www.cw-inc.com TEST NUMBER - 268-99 Safety 1ST, Inc. GROW WITH ME - 49240T TEST PROCEDURES 1. TEST EQUIPMENT A. HP 8546A (9 kHz - 6.5 GHz) EMI Receiver w/ RF Filter Section, S/N 3704A00323 / 3650A00360. Calibration Date 3-25-1999, calibrated annually. B. HP 8593E (9 kHz - 26.5 GHz) Spectrum Analyzer, S/N 3829A03887. Calibration Date 9-3-1999, calibrated annually. C. Electro-Metrics BiConical Antenna, Model EM6912A, S/N 149. Calibration Date 9-19-1999, calibrated annually. D. Electro-Metrics Log Periodic Antenna, Model EM-6950, S/N 1017. Calibration Date: 3-31-1999, calibrated annually. E. Electro-Metrics Double Ridged Guide Antenna, Model EM-6961, S/N 6337. Calibration Date: 7-14-1999, calibrated annually. F. HP 1 - 26.5 GHz Preamplifier, Model 08449B, S/N 3008A01323. Calibration Date: 9-29-1999, calibrated annually. G. LISN, Compliance Worldwide, Model 50μH / 50 ohm, S/N 100. Calibration Date 7-13-1999, calibrated annually. 2. FREQUENCY RANGE TO BE SCANNED. A. Radiated Test from 30 MHz to 40 GHz (or the 10 th harmonic of the highest frequency whichever is lower). B. Conducted Test from 450 kHz to 30 MHz. Compliance Worldwide, Inc. - P. O. Box 233 - Canterbury, NH 03224 603-783-4775 Fax 783-4775 http://www.cw-inc.com TEST NUMBER - 268-99 Safety 1ST, Inc. GROW WITH ME - 49240T 3. TEST PROCEDURES. Radiated test procedure: The EUT, associated cables and peripheral devices are placed on the supporting table and any support equipment is placed off the site. The EUT is turned on and any necessary operating or test software installed and allowed to warm up. The frequency band from 30 MHz to 40 GHz is scanned. When an emission is found the emission is maximized by varying the bundle position of the connecting cables, the antenna height, the antenna polarization (vertical and horizontal) and the table orientation (360 degrees). The maximum reading is recorded and the next signal is searched for. Conducted test procedure: The power line of the EUT is connected to the LISN (Line Impedance Stabilization Network). Measurements of the emissions are made from the power line for both phase and neutral on the analyzer in the frequency range from 450 kHz to 30 MHz. The maximum readings are recorded for each phase. All measurements are made according to the procedures defined in: "ANSI C63.4-1992 Standard Methods of Measurement of Radio Noise Emissions from Low-Voltage Electrical and Electronics Equipment in the Range of 9 kHz to 40 GHz, American National Standard for (ISBN 1- 55937-215-5). Compliance Worldwide, Inc. - P. O. Box 233 - Canterbury, NH 03224 603-783-4775 Fax 783-4775 http://www.cw-inc.com TEST NUMBER - 268-99 Safety 1ST, Inc. GROW WITH ME - 49240T PART 15 SUBPART C TEST LIMITS 1. 15.209, 15.235 & 15.249 Radiation Limits (Quasi-Peak): Frequency MHz Distance meters Limit dBμV/m Limit μV/m 1.705 - 30 30 29.5* 30* 30 - 88 3 40.0 100 49.82 - 49.90 3 80.0* 10,000* 88 …

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Contact Information

Applicant

Dan Desimone(Director R & A, Project Management)
[email protected]508-216-1843Fax: 508-216-1812

Technical Contact

Compliance WorldwideLarry K Stillings
[email protected]603 783 4775

66 Baptist Road · Canterbury, New Hampshire · United States

Non-Technical Contact

Compliance WorldwideLarry K Stillings
[email protected]603 783 4775

Test Firm

Compliance WorldwideLarry Stillings
603-783-4775

Technical Specifications

#Rule PartsFrequency RangePower Output
115C902.8 MHz - 904.75 MHz-
Confidentiality
Long Term

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