PDF《技术规格书》

DVB-S2电 子调谐器 DVB-S2Tuner 技术规格书SPEC丨FICATlON F1凸犁卢手|Gs4A.

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9 深圳华立视通科技有限公司 Shenzhen Hualistone Technology Co., Ltd Model No.: GS4A-30 SPEC No.: GST-01-2-382-000 Page No.: 2/7 INTRODUCTION Description: This specification covers digital satellite tuner intended for use in digital Set Top Box, which support for DVB-S2 standard. The series products that these adopt a same single chip include following model: Model overview: Model Connector Dimension Mounting Remark GS4A-30 2*F 29.6*29.4*13 V Recorder of Version: Date of Change Version No. Summary Check & Approval 2011-08-30 1.0 First issue. 深圳华立视通科技有限公司 Shenzhen Hualistone Technology Co., Ltd Model No.: GS4A-30 SPEC No.: GST-01-2-382-000 Page No.: 3/7 1. General Specifications Table 1: 1-1 Receiving frequency range 950MHz to 2150MHz 1-2 Input signal level per channel -65dBm to -25dBm 1-3 Nominal RF Input Impedance 75?(F-connector) 1-4 Local frequency range 950MHz to 2150MHz 1-5 Channel selection System PLL synthesizer 1-6 Local step frequency Depending on PLL Setting 1-7 AGC input voltage 0V to 3.3V(0:Max. gain,+3.3V:min. gain) 1-8 I/Q Output LPF cut off frequency(-3dB) 10MHz to 30MHz,variable(2 MHz step) 1-9 Nominal I/Q output level 0.6Vp-p at

1 kohm load impedance 1-10 Nominal I/Q output impedance

50 ohm 1-11 Operating Voltage PIN3,PIN4 3.3V±0.165V DC 1-12 Absolute maximum rating voltage PIN2 PIN3,PIN4 25V DC,400mA Max. 3.3V±0.165V DC 1-13 Storage condition Temperature Humidity Period +15℃ to +35℃ 25% RH to 57% RH

6 months 1-14 Operating condition Temperature Humidity -20℃ to +85℃ Less than 95% Water vapor pressure

6643 Pa max. No condensation 1-15 Test condition Supply voltage Ambient temperature Ambient humidity I/Q output level +3.3V±0.1V DC +25℃ ± 5℃ 65% ± 5% 0.6Vp-p at 1k ohm load 1-16 F-connector strength Chassis must not to be deformed at 0.98(N.m) of the bending moment and must be connected electrically. 1-17 F-connector clamping torque Chassis must not to be deformed when the nut is built at 0.98(N.m) of the clamping torque and must be connected electrically. 深圳华立视通科技有限公司 Shenzhen Hualistone Technology Co., Ltd Model No.: GS4A-30 SPEC No.: GST-01-2-382-000 Page No.: 4/7 2. Electrical Specifications Table 2: Specification NO. Item Min Typ Max Unit Condition 2-1 RF Input VSWR 2.0 2.5

950 MHz to 2150MHz 2-2 Noise Figure

8 12 dB at AGC voltage=0V 2-3 Gain Deviation

7 10 dB

950 MHz to 2150MHz 2-4 AGC control range

60 80 dB AGC voltage:

0 to 3.3V 2-5 3rd order Intermodulation (2 tone)

40 60 dB input Level is -25dBm Desired signal: FO undesired signal: (FO±29.5MHz, FO±59MHz) LPF_Fc=20 MHz 2-6 I/Q phase balance -4

0 +4 Deg. freg. offset is 100KHz 2-7 I/Q gain balance -2

0 +2 freg. offset is 100KHz 2-8 Pass band flatness of BB LPF

2 dB 0.1MHz to fc*0.7 2-9 Local oscillation signal leak at RF input Terminal -68 -63 dBm

950 MHz to 2150MHz 2-10 Phase Noise 1KHz offset 10KHz offset 100KHz offset -70 -78 -85 -50 -70 -78 dBc/Hz measured at I/Q out 2-11 Reference leak -40 -30 dBc measured at I/Q out 2-12 PLL lock up time