TEST REPORT 4

FCC ID: KBCIX260PLUSGC82

Test Report

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FCCID_471908

Test report no.: EMC_553FCC22—24_2003 Issue date: 2003—10—23 Page 14 (80) FREQUENCY STABILITY § 2.1055 / § 24.235 Method of Measurement: In order to measure the carrier frequency under the condition of AFC lock, it is necessary to make measurements with the EUT in a "call mode". This is accomplished with the use of R&S CMU 200 UNIVERSAL RADIO COMMUNICATION TESTER. 1. Measure the carrier frequency at room temperature. 2. Subject the EUT to overnight soak at —30 C. 3. With the EUT, powered via nominal voltage, connected to the CMU 200 and in a simulated call on mid channel (190 for GSM 850 & 661 for PCS—1900), measure the carrier frequency. These measurements should be made within 2 minutes of powering up the EUT, to prevent significant self—warming. 4. Repeat the above measurements at 10 C increments from —30 C to +50 C. Allow at least 1 1/2 hours at each temperature, unpowered, before making measurements. 5. Remeasure carrier frequency at room temperature with nominal voltage. Vary supply voltage from minimum voltage to maximum voltage, in 0.1 Volt increments remeasuring carrier frequency at each voltage. Pause at nominal voltage for 1 1/2 hours unpowered, to allow any self—heating to stabilize, before continuing. 6. Subject the EUT to overnight soak at +50 C. 7. With the EUT, powered via nominal voltage, connected to the CMU 200 and in a simulated call on mid channel (190 for GSM 850 & 661 for PCS—1900), measure the carrier frequency. These measurements should be made within 2 minutes of powering up the EUT, to prevent significant self—warming. 8. Repeat the above measurements at 10 C increments from +50 C to —30 C. Allow at least 1 1/2 hours at each temperature, unpowered, before making measurements. 9. At all temperature levels hold the temperature to +/— 0.5 C during the measurement procedure. Measurement Limit: For Hand carried battery powered equipment: According to the JTC standard the frequency stability of the carrier shall be accurate to within 0.1 ppm of the received frequency from the base station. This accuracy is sufficient to meet Sec. 24.235, Frequency Stability. The frequency stability shall be sufficient to ensure that the fundamental emission stays within the authorized frequency block. As this transceiver is considered "Hand carried, battery powered equipment" Section 2.1055(d)(2) applies. This requires that the lower voltage for frequency stability testing be specified by the manufacturer. This transceiver is specified to operate with an input voltage of between 3.0VDC and 3.6VDC, with a nominal voltage of 3.6VDC. Operation above or below these voltage limits is prohibited by transceiver software in order to prevent improper operation as well as to protect components from overstress. These voltages represent a tolerance of —0.16% and +0%. For the purposes of measuring frequency stability these voltage limits are to be used. For equipment powered by primary supply voltage: According to the JTC standard the frequency stability of the carrier shall be accurate to within 0.1 ppm of the received frequency from the base station. This accuracy is sufficient to meet Sec. 24.235, Frequency Stability. The frequency stability shall be sufficient to ensure that the fundamental emission stays within the authorized frequency block. For this EUT section 2.1055(d)(1) applies. This requires to vary primary supply voltage from 85 to 115 percent of the nominal value for other than hand carried battery equipment.

Test report no.: EMC_S53FCC22—24_2003 Issue date: 2003—10—23 cerecom Page 15 (80) FRQUENCY STABILITY (GSM—850) AFC FREQ ERROR vs. VOLTAGE Frequency = 836.6MHz Voltage Frequency Error Frequency Error (VDC) (Hz) (ppm) 3.0 32 0.038 3.6 46 0.055 AFC FREQ ERROR vs. TEMPERATURE TEMPERATURE Frequency Error Frequency Error —30 36 0.04303 —20 40 0.0478 —10 42 0.0502 0 49 0.0586 +10 42 0.0502 +20 46 0.055 +30 37 0.044 +40 37 0.044 +50 46 0.055

cErecom" mdize Test report no.: EMC_S553FCC22—24_2003 Issue date: 2003—10—23 Page 16 (80) FRQUENCY STABILITY (GSM—1900) AFC FREQ ERROR vs. VOLTAGE Frequency = 1880.0 MHz Voltage Frequency Error Frequency Error (VDC) (Hz) (ppm) 3.0 33 0.0175 3.6 46 0.0244 AFC FREQ ERROR vs. TEMPERATURE TEMPERATURE Frequency Error Frequency Error —30 46 0.0245 —20 41 0.0218 —10 54 0.0287 0 50 0.0266 +10 40 0.0213 +20 47 0.025 +30 46 0.0245 +40 56 0.0298 +50 49 0.026


Document Created: 2004-03-24 09:45:41
Document Modified: 2004-03-24 09:45:41
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