(No.RA018)1-414.4 BER (Bit Error Rate) Measurement(1) The Panel Test Mode is used to measure the BER (Refer"4.2.1 Test mode operation features").(2) Select "10" (P25 Phase1), "7" (P25 Phase2) and "7"(NXDN Mode) for test signaling (Refer to "4.2.3 Frequencyand Signaling" (2) Test signaling).Note:"7" (NXDN Mode) can be selected only by PC test mode.(3) Select a bandwidth (Narrow/Very Narrow) by pressing the[ ] key. When P25 Phase1 or P25 Phase2 is selected, itis not necessary to select a bandwidth.(4) Select a test frequency ("4.2.3 Frequency and Signaling"(2) Test signaling Test frequency).(5) Measure the BER (Bit Error Rate) using the digital radiotester.Enter a standard input signal into the transceiver as a stan-dard tone test pattern for P25, FSW+PN9 for NXDN.(6) Adjust the input signal level to achieve the standard bit er-ror rate (BER).(For example, if the BER is 0.86%, the display shows"0.86".)Note:"4", "9" (P25 Phase1), "2" (P25 Phase2) is for production.4.5 Adjustment points4.6 Test Equipment Required for Alignment* The test equipment which is not used for adjustment is contained in this table.MAIN UNIT (XC1-033, XC1-036)Component sideRTC (CN710)MAIN UNIT (XC1-033, XC1-036)Foil sideRTC (CN709)Test Equipment Major Specifications1. Standard SignalGenerator (SSG)Frequency RangeModulationOutput100 to 900MHzFrequency modulation and external modulation-127dBm/0.1uV to greater than -20dBm/22.4mVWhen performing the Frequency adjustment, the following accuracy is necessary.• 0.003ppmUse a standard oscillator for adjustments, if necessary.2. Power Meter Input ImpedanceOperation FrequencyMeasurement Capability50Ω100 to 900MHzVicinity of 10W3. Deviation Meter Frequency Range 100 to 900MHz4. Digital Volt Meter(DVM)Measuring RangeInput Impedance10mV to 10V DCHigh input impedance for minimum circuit loading5. Oscilloscope DC through 30MHz6. Frequency Counter Frequency RangeFrequency Stability10Hz to 1000MHz0.2ppm or lessTo measure the oscillating frequency of the internal clock 32766.00Hz~32770.00Hz forRTC Correction Resolution 0.01Hz is better for accuracy adjustment.7. Ammeter 5A8. AF Volt Meter (AF VM) Frequency RangeVoltage Range50Hz to 10kHz1mV to 10V9. Audio Generator (AG) Frequency RangeOutput50Hz to 5kHz or more0 to 1V10. Distortion Meter CapabilityInput Level3% or less at 1kHz50mV to 10Vrms11. Spectrum Analyzer Measuring Range DC to 1GHz or more12. 8Ω Dummy Load Approx. 8Ω, 3W13. Regulated Power Supply 5V to 10V, approx. 3A, Useful if ammeter equipped
