DiSEqC2.0卫星4x1切换开关加工

锌合金压铸外壳，表面镀镍处理
优质元器件，线路专业设计，损耗小
优质芯片，专业程序设计，兼容更多机型
具有DiSEqC?2.0双向控制的全部功能
通过接收机提供DiSEqC指令选择四路卫星信号的其中一路
用一条同轴电缆同时传送控制指令与卫星信号
支持?DiSEqC?"待机"功能
GST-4103??参数说明：?
眼观：一般好的产品外观平整、无毛刺，色泽亮丽和其材料采用优质abs+PC料，阻燃性能良好，不易碎。有的产品表面虽光洁，似乎涂了一层油，但色泽苍白、质地粗大，此类材料阻燃性不好，可以用火点燃试试它的阻燃性怎么样。要是点着很快熄灭，则为好的塑料，否则就是很差的塑料。
手按：好的产品面板用手不会直接取下，必须借助一定的**工具，而一般的非主流中低档产品则很容易用手取下面盖，造成家居和公共场所的不雅。选择时用食指、拇指分按面盖对角成端点，一端按住不动，另一端用力按压，面盖松动、下陷的产品质量较差，反之则质量可信。
耳听：轻按开关功能件，滑板式声音越轻微、手感越顺畅，节奏感强则质量较优；反之，启闭时声音不纯、动感涩滞，有中途间歇状态的声音则质量较差。
GST-4103
Model:GST-4103


Connectors:“F”type?female


Switching?Signal?：?DiSEqC
Product?features:
Features:


Zinc?die-cast?housing,?nickel-plated


Excellent?quality?component?,?professional?circuit?design?and?low?loss


Excellent?quality?chip?,?professional?program?design?and?compatible


with?more?types?of?satellite?receiver


DiSEqC?2.0?,?supports?bi-directional?DiSEqC?full?control?functions


Select?one?of?four?satellite?**s?through?DiSEqC?commands?supplied


from?satellite?receiver


Utilize?one?coaxial?cable?to?transmit?control?instruction?and?satellite


**?simultaneously


Support?DiSEqC?“standby”?command

GST-4103
Model:GST-4103


Connectors:“F”type?female


Switching?Signal?：?DiSEqC


Product?features:
Features:


Zinc?die-cast?housing,?nickel-plated


Excellent?quality?component?,?professional?circuit?design?and?low?loss


Excellent?quality?chip?,?professional?program?design?and?compatible


with?more?types?of?satellite?receiver


DiSEqC?2.0?,?supports?bi-directional?DiSEqC?full?control?functions


Select?one?of?four?satellite?**s?through?DiSEqC?commands?supplied


from?satellite?receiver


Utilize?one?coaxial?cable?to?transmit?control?instruction?and?satellite


**?simultaneously


Support?DiSEqC?“standby”?command


Parameter?description:
?
Specifications


Item


Specification


Item


Specification


Frequency?Range


950-2400(MHz)


Normal?Working?Voltage


12-20(V)


Insertion?Loss


3(dB)


DC?Power?Consumption


10(mA)


Isolation


20(dB)


DC?Max?Power?Passing


500(mA)


Return?Loss


8(dB)


Impedance(all?ports)


75(Ω)
较简单的开关有二片名叫“触点”的金属，二触点接触时使电流形成回路，二触点不接触时电流开路。选用接点金属时需考虑其对抗腐蚀的程度，因为大多数金属氧化后会形成绝缘的氧化物，使接点无法正常工作。