INTERTWINE TESTING SERVICES 7.0 Instruction Manual Attached is a preliminary copy of the Instruction Manual. The FCC information to user can be found in the last page of this manual. This manual will be provided to the end-user with each unit sold/leased in the United States.
INTERTWINE TESTING SERVICES 8.0 Miscellaneous Information This miscellaneous information includes details of the test procedure and calculation of factors such as pulse desensitization and averaging factor.
INTERTWINE TESTING SERVICES 8.1 Discussion of Pulse Desensitization The determination of pulse sensitivity was made in accordance with Hewlett Packard Application Note 150-2, Spectrum Analysis Pulsed RF. Pulse sensitivity was not applicable for this device.
INTERTWINE TESTING SERVICES 8.2 Calculation of Average Factor Averaging factor log (duty cycle) The specification for output field strengths in accordance with the FCC rules specify measurements with an average detector. During testing, a spectrum analyzer incorporating a peak detector was used. Therefore, a reduction factor can be applied to the resultant peak signal level and compared to the limit for measurement instrumentation incorporating an average detector.
INTERTWINE TESTING SERVICES 83 Emissions Test Procedures The following is a description of the test procedure used by Intertwine Testing Services in the measurements of TV interface devices operating under Part 15, Subpart B rules. The test set-up and procedures described below are designed to meet the requirements of ANSI C63.4 1992. The equipment under test (BUT) is placed on a wooden turntable which is four feet in diameter and approximately one meter in height above the ground plane.
83 INTERTWINE TESTING SERVICES Emissions Test Procedures (cont'd) The EUT is warmed up for 15 minutes prior to the test. AC power to the unit is varied from 85% to 115% nominal and variation in the fundamental emission field strength is recorded. If battery powered, a new, fully charged battery is used. Conducted emission measurements are made as described in ANSI C63.4 1992. The IF b bandwidth used for measurement of radiated signal strength was 100 kHz or greater * low 1000 MHz.