Specifications

Installation and Operation Manual Chapter 1 Introduction
FCD-E1LC Ver. 1.0 Technical Specifications 1-25
Receive level
LTU (long haul) mode 0 to -36 dB
DSU (short haul) mode 0 to -10 dB
Jitter Performance Per ITU-T Rec. G.823
Connector RJ-45 (ISO 10173) 8-pin connector
Timing
Receive timing Always recovered from received line signal
Transmit timing
(user-selectable)
Internal ±50 ppm oscillator
External timing User-selectable source:
• Locked to the transmit clock of the data
channel
• Locked to the recovered receive main link
clock
• Locked to the recovered receive clock of
the sublink (optional)
Allowed range: ±50 ppm
Loopback timing Locked to the recovered receive clock, allowed
range ±50 ppm
Synchronous User
Data Channels
Data Channel Interface RS-530 (also supports V.35, V.36/RS-449), or
X.21, according to order.
V .35, V.36/RS-449, X.21 supported by means
of adapter cables
Data Channel Connectors
• RS-530 interface: 25-pin D-type female
• V.35 interface: 34-pin female via adapter
cable
• V.36/RS-449 interface: 37-pin D-type
female via adapter cable
• X.21 interface: 15-pin, D-type female via
adapter cable
Data Rates User-selectable , n ×64 kbps or n ×56 kbps,
where
n equals 1, 2, 3, ....., 31
Timing Modes