AdvanceTec AdvanceMobile AT3550A, Инструкция по установке и эксплуатации

Страница: 22 / 24

22
GPS Antenna Spec.
Patch
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Center Frequency 1575.42 ± 1.023 MHz (when covered with a radome
and measured by LNA ground plane)
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Bandwidth (10dB return loss) 10 MHz min
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Gain at Zenith 1dB type
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Gain ay 10° elevation -5 dBic type
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Polarization R.H.C.P.
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Axial Ratio 5.0 dB type
Filter / LNA
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Center Frequency 1575.42 ± 1.023 MHz
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Gain 30~37 dB (pc:3V/32dB)
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Noise Figure 1.4 dB type (ps:3V / 1.35 dB)
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Filer out band attenuation
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Dielectric filter
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7dB min fo±20 MHz
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20dB min fo±50MHz
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30dB Min fo±100MHz
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(fo=1575.42MHz)
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Output V.S.W.R 2.0 max
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Voltage DC = 2.5~5.5V
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Current DC = 8~23mA (ps:3V / 10mA)
iDEN antenna connector
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Mini USB connector with a female center contact (Use this connector
for the iDEN Antenna provided with the unit.
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50 Ohms impedance
Environmental Specifications
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Operational Temperature -20 to +60°C
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Storage Temperature -40 to +85°C
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Shock MIL-STD-810E METHOD 516.4 Proc. 1, 18 shocks 40 G half-
sine 6 – 9 msec 18
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Shocks 2500g’s, 0.00075-second pulse
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Vibration 2X-EIA (not tested electronically during vibration) Sine 20 –
2000 Hz, 4G peak
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1 hr per axis – 3 axis (X, y, z) Random 20 – 2000 Hz, 6G RMS; 1 hr per
axis – axis (x, y, z)