Calculations

FCC ID: PKTP1BAP

Test Report

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FCCID_167231

IP Wireless, Inc. WO: 77097 06/18/2001 Model: AP Test Lab: Hollister, Site A FCC 21.908(d) Sample Calculations for Specification Limits Using the Relative Method in 21.908(e). Definitions: P = channel power in dBW normalized to 6MHz (for value, refer to Emissions Mask Data Sheet, Page NN, “Power normalized to 6MHz band” for each channel). Pa = average power @ 100kHz (for value, refer to Emissions Mask Data Sheet, Page NN, “Pwr 100k” for each channel). This average power value is used with the average value readings at the band/channel edges for calculating the specification limits. Puce = upper channel edge power limit Plce = lower channel edge power limit Formulas: Puce = Pa – 25 dB Plce = Pa – 25 dB Puce + 250 kHz = Pa – 33+10log(P) dB Plce – 250 kHz = Pa – 33+10log(P) dB Puce + 3 MHz = Pa – 43+10log(P) dB Plce – 3 MHz = Pa – 43+10log(P) dB Since the all measurements were performed using RBW = 100 kHz, no bandwidth correction was necessary. Sample calculations: (shown for the upper channel side only— the lower side limits will be identical) Channel = 2506 MHz P = -12.40 dBW Pa = -11.87 dBm Puce = -11.87 – 25 dBc = -36.87 dBm Puce + 250 kHz = -11.87 – 20.60 dBc = -32.47 dBm Puce + 3 MHz = -11.87 – 30.60 dBc = -42.47 dBm Channel = 2596 MHz P = -12.30 dBW Pa = -11.37 dBm Puce = -11.37 – 25 dBc = -36.37 dBm Puce + 250 kHz = -11.37 – 20.70 dBc = -32.07 dBm Puce + 3 MHz = -11.37 – 30.70 dBc = -42.07 dBm Channel = 2680 MHz P = -12.10 dBW Pa = -11.03 dBm Puce = -11.03 – 25 dBc = -36.03 dBm Puce + 250 kHz = -11.03 – 20.90 dBc = -31.93 dBm Puce + 3 MHz = -11.03 – 30.90 dBc = -41.93 dBm


Document Created: 2001-09-04 08:02:59
Document Modified: 2001-09-04 08:02:59
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