> 12V/2A DC power supply for the camera > Support RS–485 control, and audio test > Length and attenuation tests of the network cable > Functions of digital multimeter Bộ chọn sản phẩm System Operation System Linux Language ...
大华PFM900-E集成安装测试仪 暂无评价 Shenzhen Ancotech Electronics Co., Limited实力供应商5 yrsCN Previous slideNext slide Previous slideNext slide重要属性 行业属性 类型 住宅用 其他属性 原产地 zhejiang 品牌 dahua 型号 PFM900-E 操作系统 Linux 包装和发货信息 Packaging Details colour box in carton ...
大华安防工具系列 DH-PFM900-E说明书 Tool Series | DH-PFM900-E www.dahuasecurity.com DH-PFM900-E Integrated Mount Tester Features • 4” IPS screen and QWERTY flip keyboard with 45keys ; • Support H.264/H.265 HD decoding protocol; • Support IP , HDCVI/AHD/TVI/CVBS; ...
Zhejiang, China 品牌 Dahua 型号 PFM900-E 操作系统 Linux 屏幕 4.0英寸TFT屏幕 LED指示灯 2 * 35lm灯 音频测试 1通道音频输入测试和1通道音频输出测试 正在充电 PoE 48V-0.32A 包装和发货信息 Packaging Details 纸箱彩盒 Port shenzhen 供应能力 供应能力 ...
PFM900-E Integrated Mount Tester > 4.0" TFT screen, 800 × 480 resolution > H.264/H.265 decoding display for IPC > HDCVI/AHD/TVI/CVBS video display control > Support SD and HD direct switch > 12V/2A DC power supply for the camera > Support RS-485 cont...
1、脉冲频率调制(Pulse frequency modulationPFM是频率的有和无的变化) (1)、导通时间不变,断开时间变; (2)、断开时间不变,导通时间变; 一种脉冲调制技术,调制信号的频率随输入信号幅值而变化,其占空比不变。由于调制信号通常为频率变化的方波信号,因此,PFM也叫做方波FM。 优点: (1)、PFM相比较PWM主要优点在于...
1.截止作用。阀门是关闭(关闭)管道中的流体,不会使其流动,一般情况下各种管道的阀门主要起截止作用。 2.调节作用。阀门可哟根据工作条件或要求调整介质流量,温度,压力,液位等参数,流量控制取决于阀门开度的大小调整。 3.止逆作用一些管道需要中等流量朝一个方向流动,不允许逆流或倒带。使用止回阀可以防止介质回流。
PFMV5 Manifold mounting •Mount the bracket using the mounting screws supplied.•The required tightening torque is 0.32±0.02 Nm.•Mounting in series using the mounting brackets is not suitable for all models, depending on which fitting type is used.Thank you for purchasing an SMC PFMV5 ...
Auto Standby/Shutdown Yes Keyboard Sound Enable/Disable Screen 4.0" TFT screen, 800 × 480 resolution Keyboard Controlling keyboard: 13 keys of the main keyboard, and 45 keys of the flip keyboard Others: Power button, reset button LED Indicator Light ...
> 12V/2A DC power supply for the camera > Support RS–485 control, and audio test > Length and attenuation tests of the network cable > Functions of digital multimeter Product Selector System Operation System Linux Language Multi-language interface: English, Chinese, Spanish, French, German, Tu...