KVVP铜芯聚氯乙烯绝缘聚氯乙烯护套编织屏蔽控制电缆。KVVP2铜芯聚氯乙烯绝缘聚氯乙烯护套铜带屏蔽控制电缆。KVV22铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装控制电缆。KVVR铜芯聚氯乙烯绝缘聚氯乙烯护套控制软电缆。
普通双绞屏蔽型电缆STP-120Ω（forRS485&CAN）onepair20AWG，电缆外径7.7mm左右。适用于室内、管道及一般工业环境。使用时，屏蔽层一端接地。普通双绞屏蔽型电缆STP-120Ω（forRS485&CAN）onepair18AWG，电缆外径8.2mm左右。
Application: this product is suitable for fixed installation in mine, roadway, etc., as the main line of communication and connecting line between the junction box and telephone. HUVV copper core PVC insulated polyvinyl chloride of mine telephone cable laying in mine, general to wring type polyethylene insulated PVC sheathed in communication cable model name CPEV -s ground type polyethylene insulated PVC sheathed local communication cable
3、外导体编织一般60%-80%为宜，偏大对降低衰减效果不是很明显。4、绝缘生产用的模具设计和加工也是关键，应该保证产品达到较理想的均匀结构，使等效介点常数达到设计要求。5、物理发泡PE其衰减在低频是合格，而高频（如超过800MHz）时超差，大都与和等效介点常数偏大有关系，或者与外导体编织密度过小，内导体外直径偏小有关系。
KVV32聚氯乙烯绝缘，细钢丝铠装聚氯乙烯护套控制电缆敷设在室内、电缆沟中、管道、竖井内及地下，能承受一定的拉力作用。PYYPTYY聚乙烯绝缘乙烯护套铁路信号电缆。PYAPTYA聚乙烯绝缘挡潮综合护套（铁路）信号电缆。
就如同没有发生一样。选择电平触发还是边沿触发方式应从系统使用外部中断的目的上去考虑，而不是如许多资料上说的根据中断源信号的特性来取舍。比如，有的书上说（《KeilC51使用技巧及实战》），就有类似的观点。MCS51单片机系列属于8位单片机，它是Intel公司继MCS48系列的成功设计之后，于1980年推出的产品。由于MCS51系列具有很强的片内功能和指令系统，因而使单片机的应用发生了一个飞跃，这个系列的产品也很快成为世界上第二代的标准控制器。
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电缆型号中的代号及含义GH高速公路通信电缆省略铜Y实心聚烯烃绝缘A铝塑粘接综合护层T填充式按GB2952.1及GB2952.3的规定主要规格规格(线径mm).2四线组数3注:根据用户要求可以设计和生产其它规格和多个四线组.产品技术要求导体导体采用符合规定的TR型软圆铜线。
Computer shielded cable; Purpose: high voltage insulation with small interface constant. Use to ground, and the screen, the total screen (or three quad twisted, group screening, group screen a total screen), such as structure form, with a small dielectric loss, the transmission ability is strong, resistant performance is good wait for a characteristic, can reliable transmission weak analog or digital, can be widely used in electricity, metallurgy, petroleum, chemical, textile sites detection and control of the door or by computer automation instrumentation, and general industrial computer. Relevant technical indicators: reference BS5308 IEC189 and British second, product code 1 and code the DJ - (series code) electronic computer shielded cable Y - (insulation code) high-pressure polyethylene F - (insulation code) fluoroplastic V - (sheath code) polyvinyl chloride (R - said many strands of soft wire core P - (block code) copper mesh shielding P1 tin plated copper mesh shielding P2 copper tape screened P3 aluminum-plastic composite membrane shielding for example 1:3, product specifications order 7 (14) to 1.0 was computer shielded cable can be represented as: (1) total shielding DJYVP7 * 2 * 1.0mm2 (2) partial shielding multiple strands of soft line DJYPVR7 * 2 * 1.0mm2 (3) total shielding type DJYPVP7 * 2 * 1.0mm2 Type (1) packet shielding DJYPV3 x 3 x 0.75 was (group 2) screen a total screen DJYPVP3 x 3 x 0.75 was three, model name and use range model name using range DJYVPDJYPVDJYPVP total shielding polyvinyl chloride polyethylene insulating sheath computer cable shielding polyvinyl chloride polyethylene insulation group sheathed electronic computer cable shielding total shielding polyvinyl chloride polyethylene insulation group sheathed electronic computer cable 1, fixed for laying indoors, in cable trench or pipe 2, cable long-term working temperature: - 20 ℃ + 65 ℃, the cable laying temperature is lower than 0 ℃, the bending radius should not less than 10 times of cable diameter DJYVPR DJYPVR DJYPVRP total shielding polyvinyl chloride polyethylene insulating sheath computer with a soft cable shielding polyvinyl chloride polyethylene insulation group sheathed computer with a soft cable shielding total shielding polyvinyl chloride polyethylene insulation group with a soft cable sheath computers shows that: (1) flame retardant cable (oxygen index greater than 30) need to add code "out" in front of the model. For example, zr-djypv zr-djypvp et al. (2) armored (steel belt armored) cables need to add code "22" in the lower right corner of the model, such as: DJYPV22 djypvpppvp22, etc. The cable is mainly used for ac or dc 300V or below and can work normally when 500V or below.
Flame retardant grade: C for fire temperature: 815 ℃ or higher for fire time: 20 min into a bundle of cable laying nonmetallic material volume: acuity 1.5 litres/m carbonized height: 2.5 meters or less self-extinguishing time: 1 h or less;
NHA—VV适用范围：同NHB—VV，用于要求耐火较为苛刻的场所。NHB—VV22适用范围：同NHB—VV，用于能承受机械外力的场所。NHA—VV22适用范围：同NHB—VV22，用于要求耐火较为苛刻的场所。
3．成品电缆经受交流50HZ3.5KV/5min电压试验不击穿。本质安全防爆测温系统用补偿导线或电缆采用低电容、低电感材料结构，具有防爆安全性能，适用于有爆炸危险的环境下作防爆热电偶冷短与防爆测温仪表连接，形成本安热电偶测温系统。
RS-232C的信号线连接单端驱动单端接收2)RS-422A美国的EIC于1977年制定了串行通信标准RS-499，对RS-232C的电气特性作了改进，RS-422A是RS-499的子集。RS-422A采用平衡驱动、差分接收电路(见)，从根本上取消了信号地线。平衡驱动器相当于两个单端驱动器，其输入信号相同，两个输出信号互为反相信号，图中的小圆圈表示反相。外部输入的干扰信号是以共模方式出现的，两根传输线上的共模干扰信号相同，因接收器是差分输入，共模信号可以互相抵消。
MHVV32-4（4×1.5）矿用阻燃组合通信电缆用于煤矿竖井或斜井作通信线。MHPVP3V32-7（2×2×0.5＋1×0.5＋2×6.0）煤矿用阻燃组合通信电缆用于煤矿竖井或斜井作通信线。MHYVRPZ矿用聚乙烯绝缘铝/塑复合带屏蔽编织铠装聚氯乙烯护套通信软电缆用于斜井和平巷作通信线。
RS485 cable product description: Characteristic impedance of 100 ohms, conductor is 2 * 2 * 24 awg multi-strand tin electrolytic copper wire twisted and become, insulating sheath like installation of design and color recognition, overall **** aluminum foil/polyester belt shielding, additional independent stranded tinned copper wire grounding conductor, industrial gray PVC outer sheath, the standard 1 to RS - 485 communication cable, the characteristic impedance of 120 ohms, conductor is 2 * 24 awg stranded tinned copper wire, PE insulation, covered with aluminum foil/polyester composite with **** + 90% tin plated copper wire cover, double shielding with independent grounding conductor is RS - 485 communication cable.
本产品具有较强的抗电磁干扰、抗雷击及均匀电场，改善供电品质的特性。特别适用具有精密电子装置的场所，如计算机中心、航空航天监控中心、智能大厦等。本产品按GB9330《塑料绝缘控制电缆》、IEC60227《额定电压450/750V及以下聚氯乙烯绝缘电缆》以及IEC60502《额定电压1-30KV挤包绝缘电力电缆及附件》等标准制造。
多芯电缆在机架敷设中更加便捷。1、组合式同轴电缆主要适用于办公大楼，多功能开发小区的应用，其优点主要有减少重复布线，减少工程总体投资成本。2、组合式电缆是一种最新型电缆系列，它适用各项工程各个单位、各种电缆的敷设，它具有结构简单、配置灵活、安装方便，型式新颖等优点。