KNZ48440

TABLE OF CONTENTS LIST APPLICANT: DSI (HK) LTD. FCC ID: KNZ48440 TEST REPORT CONTAINING: PAGE 1......TEST PROCEDURE PAGE 2......TEST PROCEDURE CONTD. & CIRCUIT DESCRIPTION PAGE 3......RADIATION INTERFERENCE TEST DATA PAGE 5......OCCUPIED BANDWIDTH TEST DATA PAGE 6......POWERLINE CONDUCTED TEST DATA EXHIBITS CONTAINING: EXHIBIT 1............POWER OF ATTORNEY LETTER EXHIBIT 2............BLOCK DIAGRAM EXHIBIT 3............SCHEMATIC EXHIBIT 4A-4C........PARTS LIST EXHIBIT 5A-5B........INSTRUCTION MANUAL EXHIBIT 6............SAMPLE OF FCC ID LABEL EXHIBIT 7............LOCATION OF FCC ID LABEL EXHIBIT 8............EXTERNAL PHOTO - FRONT SIDE EXHIBIT 9............EXTERNAL PHOTO - BACK SIDE EXHIBIT 10...........INTERNAL PHOTO - COMPONENT SIDE EXHIBIT 11...........INTERNAL PHOTO - COPPER SIDE EXHIBIT 12...........RADIATED TEST SET UP PHOTO EXHIBIT 13...........POWERLINE CONDUCTED TEST SET UP PHOTO EXHIBIT 14...........OCCUPIED BANDWIDTH PLOT - LOUD VOICE EXHIBIT 15...........OCCUPIED BANDWIDTH PLOT - NO AUDIO INPUT EXHIBIT 16...........POWERLINE CONDUCTED PLOT - LINE 1 EXHIBIT 17...........POWERLINE CONDUCTED PLOT - LINE 2 APPLICANT: DSI (HK) LTD. FCC ID: KNZ48440 REPORT #: F:\CUS\D\DSI\DSI40A9.RPT PAGE: TABLE OF CONTENTS LIST APPLICANT: DSI (HK) LTD. FCC ID: KNZ48440 TEST EQUIPMENT LIST 1. Spectrum Analyzer: Hewlett Packard 8566B - Opt 462, w/ preselector 85685A, & Quasi-Peak Adapter HP 8565OA, & HP 8449B - OPT H02 Cal. 6/26/98 2. Signal Generator, Hewlett Packard 8640B, cal. 10/1/98 3. Eaton Biconnical Antenna Model 94455-1 20-200 MHz Serial No. 0997 Cal. 5/15/98 4. Electro-Metric Dipole Kit, 20-1000 MHz, Model TDA-30 10/15/98 5. Electro-Metric Horn 1-18 GHz, Model RGA-180, Cal. 8/15/98 6. Electro-Metric Antennas Model TDA-30/1-4,Cal. 10/15/98 7. Electro-Metric Line Impedance Stabilization Network Model No. EM-7821, Serial No. 101; 100KHz-30MHz 50uH. Cal.11/19/98 8. Electro-Metric Line Impedance Stabilization Network Model No. EM-7820, Serial No. 2682; 10KHz-30MHz 50uH. Cal. 11/19/98 9. Special low loss cable was used above 1 GHz 10. Tenney Temperature Chamber TEST PROCEDURE GENERAL: This report shall NOT be reproduced except in full without the written approval of TIMCO ENGINEERING, INC. RADIATION INTERFERENCE: The test procedure used was ANSI STANDARD C63.4-1992 using a HEWLETT PACKARD spectrum analyzer with a prese- lector. The bandwidth of the spectrum analyzer was 100 kHz with an appropriate sweep speed. The analyzer was calibrated in dB above a microvolt at the output of the antenna. The resolution bandwidth was 100KHz and the video bandwidth was 300KHz. The ambient temperature of the UUT was 80oC with a humidity of 76%. FORMULA OF CONVERSION FACTORS: The Field Strength at 3m was estab- lished by adding the meter reading of the spectrum analyzer (which is set to read in units of dBuV) to the antenna correction factor sup- plied by the antenna manufacturer. The antenna correction factors are stated in terms of dB. The gain of the Preselector was accounted for in the Spectrum Analyzer Meter Reading. Example: Freq (MHz) METER READING + ACF = FS 33 20 dBuV + 10.36 dB = 30.36 dBuV/m @ 3m POWER LINE CONDUCTED INTERFERENCE: The procedure used was ANSI STAN- DARD C63.4-1992 using a 50uH LISN. Both lines were observed. The bandwidth of the spectrum analyzer was 10kHz with an appro- priate sweep speed. The ambient temperature of the UUT was 80oC with a humidity of 76%. APPLICANT: DSI (HK) LTD. FCC ID: KNZ48440 REPORT #: F:\CUS\D\DSI\DSI40A9.RPT PAGE #: 1 TEST PROCEDURES CONTINUED APPLICANT: DSI (HK) LTD. FCC ID: KNZ48440 ANSI STANDARD C63.4-1992 10.1.7 MEASUREMENT PROCEDURES: The unit under test was placed on a table 80 cm high and with dimensions of 1m by 1.5m. The table used for radiated measurements is capable of continuous rotation. When an emission was found, the table was rotated to produce the maximum signal strength. At this point, the antenna was raised and lowered from 1m to 4m. The antenna was placed in both the horizontal and vertical planes. The situation was similar for the conducted measurement except that the table did not rotate. The EUT was setup as described in ANSIC63.4-1992 with the EUT 40 cm from the vertical ground wall. CIRCUIT_DESCRIPTION: In the transmit mode the speaker is switched out of the circuit and the microphone is connected to the input of Q13 and Q15 and Q16 and the output of Q16 drives the transformer T2, which modu- lates the voltage of the crystal controlled oscillator, Q9. Q9 is connected to the output stage Q8 through T6. From Q6 the signal goes to T7 and then to the antenna. In the receive mode the signal comes in on the antenna to T7 and then to the superregen- erative detector Q10. From Q10 the detected signal is amplified in Q11 & Q12 and then goes to the audio amplifiers Q13, Q15, Q16. Q16 drives the output transformer T2 which is connected to the speaker. ANTENNA_AND_GROUND_CIRCUITRY This unit makes use of a external 5" antenna. The antenna is inductively coupled. This unit is powered from a 9.0V battery. No ground connection is provided. The unit relies on the ground tract of the printed circuit board. APPLICANT: DSI (HK) LTD. FCC ID: KNZ48440 REPORT #: F:\CUS\D\DSI\DSI40A9.RPT PAGE #: 2 APPLICANT: DSI (HK) LTD. FCC ID: KNZ48440 NAME OF TEST: RADIATION INTERFERENCE RULES PART NO.: 15.235 REQUIREMENTS: CARRIER FREQUENCY WILL NOT EXCEED 80 dBuV/m AT 3M. OUT-OF-BAND EMISSIONS SHALL NOT EXCEED: 30 - 88 MHz 40.0 dBuV/M MEASURED AT 3 METERS 88 - 216 MHz 43.5 dBuV/M 216 - 960 MHz 46.0 dBuV/M ABOVE 960 MHz 54.0 dBuV/M TEST DATA: EMISSION METER READING COAX ANTENNA FIELD FREQUENCY AT 3 METERS LOSS CORRECTION STRENGTH MARGIN ANT. MHz dBuV dB FACTOR dB dBuV/m@3m dB POL. 49.83 37.00 0.25 10.99 48.24 31.76 V 99.70 33.00 0.80 8.39 42.19 1.31 H 149.60 25.40 0.80 16.90 43.10 0.40 H 199.40 19.20 0.90 12.66 32.76 10.74 H 249.30 19.80 1.20 13.35 34.35 11.65 V SAMPLE CALCULATION: FSdBuV/m = MR(dBuV) + ACFdB. TEST PROCEDURE: The procedure used was ANSI STANDARD C63.4-1992…

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