Q2698__FCC_Parts_22__24_Test_Report_03 part 5

FCC ID: N7NQ2698

Test Report

Download: PDF
FCCID_1787553

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 67 of 74 Plot 7.4.5) GMSK; PCS low channel, below 1850 MHz Plot 7.4.6) GMSK; PCS high channel, above 1910 MHz  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 68 of 74 Plot 7.4.7) 8-PSK; PCS low channel, below 1850 MHz Plot 7.4.8) 8-PSK; PCS high channel, above 1910 MHz  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 69 of 74 Plot 7.4.9) WCDMA; Cellular low channel, below 824 MHz Plot 7.4.10) WCDMA; Cellular high channel, above 849 MHz  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 70 of 74 Plot 7.4.11) WCDMA; PCS low channel, below 1850 MHz Plot 7.4.12) WCDMA; PCS high channel, above 1910 MHz  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 71 of 74 8 Frequency Stability versus Temperature FCC 2.1055, FCC 22.355, FCC 24.235 8.1 Summary of Results The EUT’s Frequency Stability versus temperature meets the requirements of less than 2.5ppm when temperature varies from -30°C to +70°C. 8.2 Test Procedure The EUT was placed inside a temperature chamber. The temperature was set to -30°C and maintained to stabilize. After sufficient soak time, the transmitting frequency error was measured. The temperature was then increased by 10 degrees, maintained to stabilize, and the measurement was repeated. This procedure was repeated until +70°C is reached. Frequency metering included internal averaging of the CMU200 to stabilize the reading. Reference power supply voltage for these tests is 3.8 volts. Test Setup Control Computer CMU200 Interface DUT Test Set Board DC Power Temperature Chamber Supply 8.3 Test Equipment EQUIPMENT MANUFACTURER MODEL NO. SERIAL NO. CAL. DATE Control Computer TC Generic PC 100488 N/A Wireless Test Set Rohde & Schwarz CMU200 117788 November 17, 2011 Spectrum Analyzer Rohde & Schwarz FSU 200078 November 15, 2011 DC Power Supply HP 6632A 3530A N/A Interface Board Shop built ATEMux N/A N/A Directional Coupler Pasternack PE2209-10 N/A N/A  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 72 of 74 8.4 Test Results 8.4.1 GSM Frequency Error over Temperature Cellular Band: 824MHz to 848MHz PCS Band: 1850MHz to 1910MHz GMSK Mode 8PSK Mode GMSK Mode 8PSK Mode Temp Offset Offset Offset Offset Offset Offset Offset Offset (°C) (Hz) (ppm) (Hz) (ppm) (Hz) (ppm) (Hz) (ppm) -30 10.0 -0.0180 -39.91 -0.0363 -16.40 -0.0087 -43.65 -0.0232 -20 9.17 0.0192 16.14 0.0095 -8.27 -0.0044 14.69 0.0078 -10 18.6 0.0149 22.73 -0.0199 -4.78 -0.0025 0.97 0.0005 0 -1.16 -0.0014 38.97 0.0015 -7.17 -0.0038 18.27 0.0097 10 2.97 0.0036 25.18 0.0039 -0.84 -0.0004 21.41 0.0114 20 -21.10 -0.0252 25.01 0.0012 -16.50 -0.0088 -30.45 -0.0162 30 -5.10 -0.0061 37 -0.0223 -20.00 -0.0106 -32.77 -0.0174 40 -26.50 -0.0317 39.58 -0.0177 -39.50 -0.0210 -27.64 -0.0147 50 -29.10 -0.0348 18.27 -0.0480 -57.90 -0.0308 -67.22 -0.0358 60 -22.10 -0.0252 30.58 -0.0107 -32.77 -0.0174 -27.64 -0.0147 70 22.73 -0.0199 38.97 0.0015 -39.50 -0.0210 39.58 -0.0177 8.4.2 UMTS Frequency Error over Temperature UMTS Mode 850 MHz Band 1900 MHz Band Temp (°C) Offset (Hz) Offset (ppm) Offset (Hz) Offset (ppm) -30 1.92 0.0023 -2.91 -0.0016 -20 -1.59 -0.0019 3.16 0.0017 -10 2.17 0.0026 2.24 0.0012 0 -1.91 -0.0023 1.08 0.0006 10 1.62 0.0019 2.96 0.0016 20 0.89 0.0011 3.88 0.0021 30 1.11 0.0013 -2.44 -0.0013 40 -0.81 -0.0010 2.9 0.0015 50 -0.76 -0.0009 3.33 0.0018 60 -2.44 -0.0013 2.24 0.0012 70 2.17 0.0026 3.16 0.0017  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 73 of 74 9 Frequency Stability versus Voltage FCC 2.1055, FCC 22.355, FCC 24.235 9.1 Summary of Results The EUT is specified to operate with a supply voltage varying between 3.4VDC and 4.2VDC, having a nominal voltage of 3.8 VDC. It meets the frequency stability limit of less than 2.5ppm when supply voltage varies within the specified limits. Operation above or below these voltage limits is prohibited by firmware in order to prevent improper operation. 9.2 Test Procedure The EUT was connected to a DC Power Supply and a UMTS test set (CMU 200) with frequency error measurement capability. The power supply output was adjusted to the test voltage as measured at the input terminals to the device while transmitting. A voltmeter was used to confirm the terminal voltage. The peak frequency error is recorded (worst case). The test voltages are 3.4 volts to 4.2 volts. NOTE: Below 3.4V and above 4.2V, the device stops transmitting. Test Setup Control CMU200 Interface DUT Test Set Board DC Power Supply 9.3 Test Equipment EQUIPMENT MANUFACTURER MODEL NO. SERIAL NO. CAL. DATE Control Computer TC Generic PC 100488 N/A Wireless Test Set Rohde & Schwarz CMU200 117788 November 17, 2011 Spectrum Analyzer Rohde & Schwarz FSU 200078 November 15, 2011 DC Power Supply HP 6632A 3530A N/A Interface Board Shop built ATEMux N/A N/A Directional Coupler Pasternack PE2209-10 N/A N/A  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.

SIERRA WIRELESS, INC. FCC Part 22, 24 / RSS 132, 133 Q2698 May30, 2012 Page 74 of 74 9.4 Test Results 9.4.1 GSM Frequency Error over Voltage Cellular Band: 824MHz to 848MHz PCS Band: 1850MHz to 1910MHz GMSK Mode 8PSK Mode GMSK Mode 8PSK Mode Voltage Offset Offset Offset Offset Offset Offset Offset Offset (V) (Hz) (ppm) (Hz) (ppm) (Hz) (ppm) (Hz) (ppm) 3.4 -193.00 -0.2307 -153.29 -0.1832 -60.15 -0.0320 -69.94 -0.0372 3.8 -30.06 -0.0359 -28.31 -0.0338 -37.20 -0.0198 -27.30 -0.0145 4.2 20.88 0.0250 -22.69 -0.0271 -30.10 -0.0160 -37.86 -0.0201 9.4.2 UMTS Frequency Error over Voltage UMTS Mode 850 MHz Band 1900 MHz Band Voltage (V) Offset (Hz) Offset (ppm) Offset (Hz) Offset (ppm) 3.4 1.23 0.0015 -20.95 -0.0111 3.8 -0.69 -0.0008 4.35 0.0023 4.2 2.04 0.0024 2.75 0.0015  2009 Sierra Wireless, Inc. The contents of this page are subject to the confidentiality information on page one.


Document Created: 2012-08-14 12:38:26
Document Modified: 2012-08-14 12:38:26
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC