RAD Data comm FCD-V35 Manual de usuario descargar pdf (Pagina 5)

FCD-E1M, FCD-T1M

Modular E1/T1 or Fractional E1/T1 Access Units Supporting Megaplex-

2

100 Modules

SPECIFICATIONS

E1/T1 MAIN LINK AND SUBLINK

• E1 Framing



256N (no MF, CCS)



256N with CRC-4 (no MF, CCS)



256S (TS16 MF, CAS)



256S with CRC-4 (TS16 MF CAS)



Unframed (main link only)

• T1 Framing



D4



ESF



Unframed (main link only)

• Bit Rate



E1: 2.048 Mbps



T1: 1.544 Mbps

• Line Code



E1: HDB3



T1: AMI

• T1 Zero Suppression

Transparent, B7ZS, B8ZS

• E1 Signal Level



Receive:

0 to -36 dB with LTU (main

link only)

0 to -10 dB without LTU



Transmit:

±3V (±10%), balanced

±2.37V (±10%), unbalanced

• T1 Signal Level



Receive:

0 to -36 dB with CSU (main link

only)

0 to -10 dB without CSU



Transmit:

0, -7.5, -15, -22.5 dB with CSU

±3V,±10% soft adjustable at

0 to 655 ft without CSU

• Line Impedance



E1: 120Ω, balanced and

75Ω, unbalanced



T1: 100Ω, balanced

• Connectors



E1: RJ-45, 8-pin, balanced



T1: RJ-45, 8-pin, balanced

• Main Link Timing



Internal accuracy: ±30 ppm



Loopback timing: ±130 ppm



Sub-E1: 2.048 Mbps ±130 ppm



Sub-T1: 1.544 Mbps ±130 ppm



External timing from data port:

n × 56, n × 64 ±130 ppm

• Sublink Timing

Locked to the main link

• Compliance



E1: ITU G.703, G.704, G.706,

G.732, G.823



T1: AT&T TR-62411, TR-62421

ANSI T1.403, AT&T 54016

(local support)

• E1 Jitter Performance



Per ITU G.823



ETSI TBR-12 and TBR-13

• T1 Jitter Performance

As per AT&T TR-62411

FIBER OPTIC MAIN LINK

• Compliance

G.921, G.956

• Transmitter Type

Laser

• Operating Characteristics

See Table 1.

• Connectors

ST, FC/PC or SC (see Ordering)

DATA PORT

• Number of Data Ports

One

• Interface

RS-530, V.35, V.36/RS-449, X.21

• Connectors

D-type 25-pin, female, RS-530

pinout

• Data Rate

n × 56 or n × 64 kbps, (n=1–31)

• Clock Modes

DCE: Rx and Tx clock to DTE

DTE1: Rx clock to user device;

Tx clock from user device

DTE2: Rx and Tx from DCE

• Control Signals



CTS follows RTS or constantly

ON, soft-selectable



DSR constantly ON, unless in

test mode



DCD constantly ON, unless in

RED ALARM

ETHERNET BRIDGE/ROUTER PORT

See Table 2.

• Connectors

10BaseT (UTP): Shielded RJ-45

GENERAL

• Diagnostics

Main E1/T1 link:

Local and remote loopback

Sub-E1/T1 port:



Local and remote loopback



Sub-E1/T1 port BER test

Data port:



Local data port loopback



Remote data port loopback



Data port BER test



Inband code activated loopback

per data port



T1 network loopback,

code-activated (FCD-T1M only)

• Timeslot Allocation



Automatic (bundled) in

consecutive timeslots



User-defined

• Performance Monitoring

E1 Main Link



Local support of CRC-4



Statistics according to RFC-1406

T1 Main Link



Local support of ESF diagnostics

according to AT&T PUB 54016



Full statistical diagnostics

according to ANSI T1.403-1989

Table 1. Fiber Optic Interface Characteristics

Wavelength

[nm]

Fiber Type

[µm]

Typical

Output Power

[dBm]

Receiver

Sensitivity

[dBm]

Maximum

Range

[km] [mi]

850 62.5/125 multimode -16 -38 5 3

1310 9/125 single mode -12 -39 62 38

1550 9/125 single mode -12 -39 100 62

1 2 3 4 5 6

FCD-E1M, FCD-T1M 1

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