Unit installation

Chapter 1 Introduction Installation and Operation Manual
1-28 Technical Specifications FCD-E1
Signal Levels
Transmit level
Balanced
Interface
±3V ±10%
Unbalanced
Interface
±2.37V ±10%
Receive level
LTU mode
0 to –36 dB
DSU mode
0 to –10 dB
Jitter Performance
Per ITU-T Rec. G.823
Connectors
Balanced interface
RJ-45 (ISO 10173) 8-pin connector
Unbalanced
interface
Two BNC coaxial connectors
Main Link Timing
Receive timing
Always recovered from received data signal
Transmit timing
(user-selectable)
Internal
±50 ppm oscillator
External timing
Locked to the transmit clock of a selected synchronous
channel, or to the receive sublink timing, or to the receive
main link
Loopback timing
Locked to the recovered receive clock, allowed range
±130 ppm
Sublink Timing
Receive timing
Always recovered from the received data signal
Transmit timing
Locked to the FCD-E1 transmit timing or to the main link
transmit clock
Optical E1 Main
Link
Framing
• G732N, 2 frames per multiframe, CRC-4 option
disabled
• G732N, 2 frames per multiframe, CRC-4 option
enabled
• G732S, 16 frames per multiframe, CRC-4 option
disabled
• G732S, 16 frames per multiframe, CRC-4 option
enabled
• Unframed
Bit Rate
2.048 Mbps