MEGGER TDR900
電纜故障定位、長度測試儀
一、產品特征
MEGGER TDR900型時域反射計可用來測量電纜長度和查找開路或斷路故障.測量范圍從5m至3km,最小分辨率為50cm.
MEGGER TDR900型型時域反射計可用于至少由二層金屬隔離層組成的電纜,其中一層是電纜的鎧裝層或屏蔽層.儀表有一自動內部匹配網(wǎng)絡以便測試25Ω、50Ω、75Ω、100Ω、125Ω、或150Ω的同軸電纜.
MEGGER TDR900應用菜單選擇鍵,能使儀表與被試電纜密切地相匹配.同樣,可調節(jié)波速值來匹配被試電纜;從而保證獲得準確的測量距離.測量的單位可調(英尺或米).
MEGGER TDR900安裝在一個堅固的ABS塑料外殼中,它是按IP42標準的防塵和全天候要求設計的.本裝置還備有一個軟性的便攜袋和一個彈簧夾適配器.本裝置由4節(jié)AA型(NEDA 15A或NR6)電池供電,它放在儀表背部.
二、產品特點
- 自動測量電纜長度和距開路或斷路故障點的距離
- 大屏幕、高分辨率LCD顯示
- 可調輸出阻抗25, 50, 75, 100, 125 或150歐姆
- 友好的用戶操作界面
- 的電纜長度校準功能
- 內置39種電纜型號標準
三、產品應用
可用于電力、電信、鐵路、航天、有線電視、數(shù)字傳輸?shù)阮I域.可對電力電纜、電話電纜、有線電視電纜、和LAN電纜等類型的電纜進行測試.
四、技術參數(shù)
電纜長度測試范圍:3.7km(波速99.9)
3.0km (波速80.0)
2.4km(波速66.0)
1.9km(波速50.0)
測試精度:±2%的讀數(shù)+20inch(小于100m)
±2%的讀數(shù)(大于100m)
測試分辨率:50cm
波速:1.0 % to 99.9(可調步長0.1 %)
電纜長度校準功能:可以根據(jù)已知電纜長度來校準這種型號電纜的波速,其長度不小于10m.
電纜型號庫:39種電纜標準型號
自定義型號庫:20種
自動斷電:30分鐘
電池: 4節(jié) LR6(AA)電池
安全: 符合IEC61010-1
EMC: 遵從電磁的兼容性BS EN61326-1
體積: 235 mmX100 mmX 44 mm
重量: 450g
外殼材質: ABS
測試線: 2m(帶鱷魚夾)
顯示: 128 x 64 LCD
使用溫度:-15ºC至+50ºC
存儲溫度: -20ºC至+70ºC
標準配置
TDR900 主機 1臺
儀器包 1個
鱷魚夾轉換器 1個
用戶手冊 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.
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