Cixi Anshi Communication Equipment Co.,Ltd
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Digital Distribution Frame with 120 Ohm Impedance for Digital Signals Transfer MDF Main Distribution Frame
The digital distribution frame (DDF) is a wiring connection device between digital multiplexing devices, digital multiplexing devices, and program-controlled devices or non-voice services. There are 75Ω unbalanced and 120Ω balanced distribution frames. This file is for 120Ω
Feature and benefit
Main technical parameters
1 Environmental requirements
1.1 Conditions of use
Working temperature: +5 ℃ ~ +40℃
Relative humidity: no more than 85% (at +30℃)
Atmospheric pressure: 70kPa ~ 106kPa
1.2 Storage temperature: -40℃~ +55 ℃
2 Appearance and structure
3 Electrical performance
3.1 Working rate: 2Mbit/s
3.2 Characteristic impedance: 120Ω (nominal value)
3.3 Insulation resistance: The insulation resistance between the two terminals of the balanced connector and between any terminal and the casing or fixture shall not be less than that specified in Table 1. The DC voltage of the measuring circuit is 500V ± 50V.
