NINGBO PANS TECHNOLOGIES
China |
|
| | |
|
| Products Catalog: 75 Ohm Digital Distribution Frame, 75Ohm Coaxial Distribution Connectivity Systems, 75 Ohm DDF Frames |
(Product Photo) |
| Origin: | China |
| Payment Method: | Telegraphic Transfer (T/T) |
| Specification: | DDF is the distribution equipment used between digital multiplexers, between digital multiplexer and exchange equipment or non voice service equipment, carrying out such functions as cables connection, cable patching and test of loops that transmitting digital signals. All parameters and performance indexes of 75 ohm MPX 272 and 120ohm MPX 286 series DDF complies with YD/ T779-1999 Digital Distribution Frame. Working conditions: Working temperature: -5 ~ + 40 Relative humidity: d85% ( + 30 ) Atmospheric pressure: 70kPa~ 106kPa Storage temperature: -25 ~ + 55 Electrical performance Performance Indexes Working rate a) 2Mbit/ s, 8Mbit/ s, 34Mbit/ s, 45Mbit/ s, 140Mbit/ s, 155Mbit/ s; b) 2Mbit/ s, 8Mbit/ s, 34Mbit/ s ( Only suitable for coaxial connector whose diameter of inner conductor is 1.24mm or for the connector with approximate structure) Characteristic impedance 75ohm Contact resistance For external conductord2.5m© , increment after mechanical durability and salt-fog test d2.5m© For internal conductord5m© , increment after mechanical durability and salt-fog test d5m© Insulation resistance The insulation resistance between external and internal conductor of coaxial connector, and between internal conductor and metal parts of unite1000M© , and the DC voltage of the test loop is 500V± 50V Dielectric strength It can withstand the test with no breakdown and arcing under the exerted voltage of 1000V AC ( rms) of 50Hz for one minute, between inner and outer conductor of coaxial connector, and between inner conductor and metal parts of unit. Crosstalk ratio a) e70 dB ( 50kHz~ 233 kHz) b) e70 dB ( 50kHz~ 51 kHz) ( Only suitable for coaxial connector whose diameter of internal conductor is 1.24mm or the connector with approximate structure) Insertion loss a) d0.3 dB ( 50kHz~ 233 kHz) b) d0.3 dB ( 50kHz~ 51 kHz) ( Only suitable for coaxial connector whose diameter of internal conductor is 1.24mm or the connector with approximate structure) Return loss a) e18 dB ( 50kHz~ 233 kHz) b) e18 dB ( Only suitable for coaxial connector whose diameter of internal conductor is 1.24mm or the connector with approximate structure) |
Your inquiry will be recorded in "Member Trade Mail". |
Recommend to your friends |
|
|
){kind=small}