MP6220/MP9000 GPS测试仪, 找迪维贝科技,.梁先生,邮箱：dwliang@dvbei.com. Single Channel Features：• 1 channel GPS L1 C/A code•Doppler control 30KHz to -30KHz in 1Hz step•Almanac data upgradeable • Sensitivity testing• Built-inultra high precision OCXO• RFLevel from -55dBm to -160dBm 1 / 8 - Channel Option：• 1 / 8 Channel GPS• Time• Log / Lat• Number of SV• Each SV power level• Main Power level specifications: Frequency Characteristics: • Frequency Range：1575.42MHz • Warm-up time (typical)：30 minutes • Frequency Accuracy：+/-100ppb maximum • Temperature stability：+/-100ppb maximum • Aging (Per year)：+/-100ppb maximum (Per day)：+/-1 ppb maximum Channels: • Number：1CH, 8CH• Navigationdata：GPS C/A @1.023MHz with 50bps•Modulation：BPSK Spectral purity• PhaseNoise@1KHz offset：-80dBc/Hz•Harmonic：-70dBc RF Output Characteristics: • High power normal output level：-55dBm ~ -90dBm • Low power normal output level：-90dBm ~ -160dBm • Channel Attenuation range (refer normal output level：-31.5dB ~ 0dB) ※Power levelranged from -55 dBm to -145 dBm in 1 dB step, -145 dBm to -160dBm in 0.5 dBstep. • Amplitude Resolution：1dB step • Amplitude Accuracy：+/-1dB • Output Impedance：50 ohms • Doppler Shift：±30KHz (1CH option) Voltage Standing Wave Ratio • 1575.42MHz：1.2 Overload protection on RF output • Maximum reverse RF power：1W maximum • Maximum DC input：+/-50 VDC Calibration Calibration：1 year