廖生 QQ： 姚小姐： QQ:
MSG-2050 is a signal generator designed for generating the simulation signal of GPS (Global Positioning System) satellite.
特点
Frequency stability of internal reference oscillator is less then 5×10-7
Rapid changing output level and the level range is from -80dBm to -140dBm
Doppler shift function is not built-in
The output terminal is DC-cut to able to connect to the powered antenna cable.
All NAVI data preset by GP-IB line and also RS-232C.
An automatic Z count increment function is equipped so as to synchronize with real time clock.
The front panel operation can be programmed by GP-IB and RS-232C.
*The application program is attached.
规格
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Frequency Characteristics
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Frequency
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1.57542GHz
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Indication
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VFD display
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Accuracy
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5×10-7
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Output Characteristics
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Output range
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-80dBm to -140dBm in 1dB step
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Indication
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VFD display
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Accuracy
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±1.0 dB for -80dBm to -140dBm
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Output impedance
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50Ω, VSWR less than 1.2
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Spurious output
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Less then -40dB at second harmonic
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Setting
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Can be set with shuttle knob, GP-IB, RS-232C
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Modulation
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Modulation method
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BPSK direct sequence spread spectrum modulation
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Indication
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VFD display
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Modulation code
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37 C/A codes
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Channel
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SV1 to SV37
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Modulation frequency
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1.023MHz clock
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Data modulation
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C/A code synchronized divider, 50bps BPSK
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NAVI data
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50bps test pattern
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Setting
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Can be set with shuttle knob, GP-IB, RS-232C
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Z count
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Automatic increment function is equipped so as to synchronize with real time clock.
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Interface Function
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Parallel interface
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GP-IB (Complying with IEEE standard )
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Serial interface
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RS-232C
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General Data
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Operating temperature range
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+10ºC to +40ºC
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Power requirement
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AC90V to 240V, 50/60Hz
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Dimensions
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Approx. 240(W) × 100(H) × 350(D)mm
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Weight
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Approx. 3.7kg
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