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DS26503 Datasheet(PDF) 10 Page - Dallas Semiconductor |
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DS26503 Datasheet(HTML) 10 Page - Dallas Semiconductor |
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10 / 123 page  DS26503 T1/E1/J1 BITS Element 10 of 123 Table 2-2. E1-Related Telecommunications Specifications ITUT G.703 Physical/Electrical Characteristics of G.703 Hierarchical Digital Interfaces Defines the 2048kbps bit rate—2048 ±50ppm; the transmission media are 75 W coax or 120W twisted pair; peak-to-peak space voltage is ±0.237V; nominal pulse width is 244ns. Return loss 51Hz to 102Hz is 6dB; 102Hz to 3072Hz is 8dB; 2048Hz to 3072Hz is 14dB. Nominal peak voltage is 2.37V for coax and 3V for twisted pair. The pulse template for E1 is defined in G.703. ITUT G.736 Characteristics of Synchronous Digital Multiplex Equipment operating at 2048kbps The peak-to-peak jitter at 2048kbps has to be less than 0.05 UI at 20Hz to 100Hz. Jitter transfer between 2.048 synchronization signal and 2.048 transmission signal is provided. ITUT G.742 Second-Order Digital Multiplex Equipment Operating at 8448kbps The DS26503 jitter attenuator is complaint with Jitter transfer curve for sinusoidal jitter input. ITUT G.772 This specification provides the method for using receiver for transceiver 0 as a monitor for the remainder of the seven transmitter/receiver combinations. ITUT G.775 A LOS detection criterion is defined. ITUT G.823 The control of jitter and wander within digital networks, which are based on 2.048kbps hierarchy G.823 provides the jitter amplitude tolerance at different frequencies, specifically 20Hz, 2.4kHz, 18kHz, and 100kHz. ETSI 300 233 This specification provides LOS and AIS signal criteria for E1 mode. Pub 62411 This specification has tighter jitter tolerance and transfer characteristics than other specifications. The jitter transfer characteristics are tighter than G.736 and jitter tolerance is tighter then G.823. (ITU) “Synchronous Frame Structures used at 1544, 6312k, 2048, 8488, and 44,736kbps Hierarchical Levels” (ITU) “Frame Alignment and Cyclic Redundancy Check (CRC) Procedures Relating to Basic Frame Structures Defined in Recommendation G.704” (ITU) “Characteristics of primary PCM Multiplex Equipment Operating at 2048kbps” (ITU) Characteristics of a synchronous digital multiplex equipment operating at 2048kbps” (ITU) “Loss Of Signal (LOS) and Alarm Indication Signal (AIS) Defect Detection and Clearance Criteria” (ITU) “The Control of Jitter and Wander Within Digital Networks Which are Based on the 2048kbps Hierarchy” (ITU) “Primary Rate User-Network Interface – Layer 1 Specification” (ITU) “Error Performance Measuring Equipment Operating at the Primary Rate and Above” (ITU) “In-service code violation monitors for digital systems” (ETSI) “Integrated Services Digital Network (ISDN); Primary rate User-Network Interface (UNI); Part 1/ Layer 1 specification” (ETSI) “Transmission and multiplexing; Physical/electrical characteristics of hierarchical digital interfaces for equipment using the 2048kbps-based plesiochronous or synchronous digital hierarchies” (ETSI) “Integrated Services Digital Network (ISDN); Access digital section for ISDN primary rate” (ETSI) “Integrated Services Digital Network (ISDN); Attachment requirements for terminal equipment to connect to an ISDN using ISDN primary rate access” |
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