CTC Union ETU01C Bedienungsanleitung PDF herunterladen (Seite 23)

G.703 E1

Specifications

Indications

Standard

Power Input

Power Consumption

Dimensions

Weight

Temperature

Humidity

Certification

MTBF

Framing

Line Code

Relative receive level

Transmit level :

Pulse Nominal 2.37V ±10% for 75ohm

Amplitude Nominal 3.00V ±10% for 120ohm

Zero amplitude ±0.1V

Jitter performance

Connectors

Clock modes :

Clock mode 0 Receive & transmit clock

(DCE1) (recovered) to the sync. DTE

Clock mode 1 Receive & transmit clock

(DCE2) (internal oscillator) to the sync. DTE

Clock mode 2

Receive clock to the sync. and transmit

(DTE1) clock from the sync. device

Clock mode 3 Receive and transmit clock from the

(DTE2) sync. DCE (from ETC and ERC pin)

Clock mode 4 Receive and transmit clock from the

(DTE3) sync. DCE (all from ETC pin)

Test Switches

Diagnostics

LEDs (Power, TD, RD, RTS, DCD, Singal loss,

Sync loss, Alarm)

ITU-T G.703/G.704/G.706 & G.732

AC: 90-250VAC , DC: -18 ~ -75 VCD

10W

250 x 195 x 45mm (D x W x H)

510g

0~50°C (Operating) ,-10~70°C (Storage)

10~90% non-condensing

CE, FCC, RoHS

57,000 hrs (25°C)

Framed CCS (PCM31) CAS (PCM30)

/ UnframedCRC4 on/off

AMI/ HDB3

0 to -43dB

According to ITU-T G.823

BNC(unbalanced), RJ-48(balanced)

Digital local loopback, Analog local

Digital local and remote loopback,

Analog local loopback, Test pattern

The ETU011 stand-alone DSU/CSU is a digital access unit for

Unframed E1, Fractional E1, or Fractional cascaded E1 service.

The ETU011 data channel supports user-selectable transmission

rates via randomly selected E1 timeslots, which provides integral

multiples of 64kbps, up to a maximum 2.048Mbps (unframed), for a

line attenuation of up to 43 dB on twisted pair or coax cable. This

provides an approximate operating range up to 2km (using

22AWG). The ETU011 packs the data channels into the E1 link in

user-selected time slots. The unused time slots can insert IDLE

code (in frame mode). The ETU011 front panel sports status LEDs

for monitoring both the CSU and DSU conditions and push button

switches for initiating local and remote loopback with integral BERT.

ETU011

Single Modular Port E1 CSU/DSU

●

Supports Fractional E1 and Unframed E1 service with EOC control

Removable interfaces, support V35, X21, RS530, RS449, RS232,

G.703 Co-directional, NRZ, Ethernet Bridge and Router

I/O connectors on rear panel

Multiple clock source selection

(Internal or External: E1 recovery, DTE or DCE)

Built-in BERT with V.54 diagnostic capabilities for performing local

and remote loopback

Features

ETU01

ETU011

E1 Network

ERM01

ETU011

E TU 011

R S -530

(2.048 Mbps)

R S -530

(2.048 Mbps)

V35

(N*64 Kbps)

V35

(N*64 Kbps)

Ordering Information

ETU011-AC: Data port to E1 AC power

ETU011-DC: Data port to E1 DC power

ETU011 Power type Optional Interface Module

ETU/TTU-ET100 : 10/100TX Ethernet card

ETU/TTU-ET100R : 10/100TX Router card

ETU/TTU-V35 : V35 interface card

ETU/TTU-X21 : X21 interface card

ETU/TTU-RS530 : RS530 interface card

ETU/TTU-RS449 : RS449 interface card

ETU/TTU-RS232 : RS232 interface card

ETU/TTU-G64 : G703 64K co-directional card

ETU/TTU-NRZ : NRZ interface card

5-13

E1 Access Unit

ETU011

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