MEGGER TDR900

电缆故障定位、长度测试仪

一、产品特征

      MEGGER TDR900型时域反射计可用来测量电缆长度和查找开路或断路故障.测量范围从5m至3km,最小分辨率为50cm.
      MEGGER TDR900型型时域反射计可用于至少由二层金属隔离层组成的电缆,其中一层是电缆的铠装层或屏蔽层.仪表有一自动内部匹配网络以便测试25Ω、50Ω、75Ω、100Ω、125Ω、或150Ω的同轴电缆.
      MEGGER TDR900应用菜单选择键,能使仪表与被试电缆密切地相匹配.同样,可调节波速值来匹配被试电缆;从而保证获得准确的测量距离.测量的单位可调(英尺或米).
      MEGGER TDR900安装在一个坚固的ABS塑料外壳中,它是按IP42标准的防尘和全天候要求设计的.本装置还备有一个软性的便携袋和一个弹簧夹适配器.本装置由4节AA型(NEDA 15A或NR6)电池供电,它放在仪表背部.

二、产品特点

• 自动测量电缆长度和距开路或断路故障点的距离
• 大屏幕、高分辨率LCD显示
• 可调输出阻抗25, 50, 75, 100, 125 或150欧姆
• 友好的用户操作界面
• 的电缆长度校准功能
• 内置39种电缆型号标准

三、产品应用
     可用于电力、电信、铁路、航天、有线电视、数字传输等领域.可对电力电缆、电话电缆、有线电视电缆、和LAN电缆等类型的电缆进行测试.

四、技术参数

电缆长度测试范围:3.7km(波速99.9)
3.0km (波速80.0)
2.4km(波速66.0)
1.9km(波速50.0)
测试精度:±2%的读数+20inch(小于100m)
±2%的读数(大于100m)
测试分辨率:50cm
波速:1.0 % to 99.9(可调步长0.1 %)
电缆长度校准功能:可以根据已知电缆长度来校准这种型号电缆的波速,其长度不小于10m.
电缆型号库:39种电缆标准型号
自定义型号库:20种
自动断电:30分钟
电池: 4节 LR6(AA)电池
安全: 符合IEC61010-1
EMC: 遵从电磁的兼容性BS EN61326-1
体积: 235 mmX100 mmX 44 mm
重量: 450g
外壳材质: ABS
测试线: 2m(带鳄鱼夹)
显示: 128 x 64 LCD
使用温度:-15ºC至+50ºC
存储温度: -20ºC至+70ºC
标准配置
TDR900 主机 1台
仪器包 1个
鳄鱼夹转换器 1个
用户手册 1本

Megger TDR900
Hand-held Time Domain Reflectometer/Cable Length Meter

• Full autoranging for measuring the length of power, telephony, CATV and LAN cables, provides distance to an open or short.
• Extra large, high resolution backlit LCD.
• Automatic output impedance control of 25, 50, 75, 100, 125 or 150 ohms.
• User-friendly menu on screen operation.
• Cable length calibration function.
• Internal library of 39 standard cable types.

The Megger TDR900 is an advanced instrument capable of measuring cable lengths and finding distance to an open or a short using Time Domain Reflectometry. It offers exceptional features and a range capability normally associated with far more expensive instruments. The measurement range spans from 15 feet (5 m) to 10,000 feet (3 km) with a minimum resolution of 20 inches (50 cm).

The TDR900 can be used for any cable consisting of at least two insulated metallic elements, one of which may be the sheath or shield of the cable. The Meter has automatic internal matching networks to allow testing of 25Ω, 50Ω, 75Ω, 100Ω, 125Ω, or 150Ω cables. (These correspond to power, telephony, CATV, and LAN cables.)

The Meter can be closely matched to the cable under test using the menu selection keys. The propagation velocity value can be similarly adjusted to match the cable under test; thus ensuring an accurate distance measurement.

The other user adjustable setting is changing the distance measurement units (feet or meters).
The Meter is housed in a rugged ABS enclosure which is dust and weatherproof to IP 42. The unit also comes with a soft carrying case and an alligator clip adapter. It is powered by 4 AA (NEDA 15A or NR 6) batteries, which are stored in a compartment on the back of the Meter. The batteries are held in a carrier for quick and easy replacement.