Verilink 2100CSU Installation Guide

2100 CSU

Configuration Guide (chassis version)

45 -00033

Rev E

7654321

LOC

S2

TO

NET

MON

DTE

FRM

STATUS

ACO

LOS

AIS

LOOP

DENSITY

SET

RESET

BPV

ACO SW

2100 CSU

31 4 5 14

2 6 7 8 9 10 11 12 13

ERR

FAR

MON

TO

DTE

NET

FRM

Front Panel Description

1 Status: The green LED lights when the unit is powered and operat ing normally. The red LED light s if an alarm exce eding

thresholds is detected or another type of uni t failure e xists.

2 ACO: This LED lights if the Alarm Cut Off switch is placed in the left On position. It i ndicates that the alarm relay contacts are

disabled.

3 AC O S W: This switch con trols the alar m r elay circuitry. The right On positi on disables the alarm relay cont acts. The left Off

position enables the contacts to report alarm conditions.

4 Switch S2: This seven-position DIP switch is used for unit configurat ion. The black squares indicate the direction of fa ctory

default se ttings. Refer to the switch dia g ram and table on ba c k.

5 BPV: This LED ligh ts (0.1 seconds minimum) for each occurrence of bipolar violations from the network.
6 LOS: This LED lig hts to indicate t h at a loss of signal is detected from th e network.
7 AIS: This LED light s if an unframed all-ones condit ion (alarm indica tion signal) is detected from the network.
8 LOOP: This LED lights to indicate that the unit is in a line loopback condition.
9 DENSITY: This LED lights if the ones density of the receiv ed data from the DTE is less than 12.5 percent .
10 SET: This LED flashes when the set code is transmitted. It lights constantly when the set code is received.
11 RESET: This LED flashes when the reset code is transmitted. It lights for five seconds when the reset code is received.
12 ERR: This LED flashes if a BERT pattern error is received during network testing.
13 Test Switch: This thr ee-po s iti o n sw i tc h is use d for perform in g a net work test or a loca l lo o pb a ck . T he L O C se tt in g invokes a

bidirectional loop. If the unit receives a loop code from the network, then the setting of Switch S3-7 applies.

14 Test Jacks: These bantam jacks provide access to the T1 line on the DTE side as follows – the top two jacks break connection to

the DTE and make connection to the unit in the direction of the net w ork, the middle two ports are used for monitoring the signals
passing through the unit ( between the DTE and the network), and the bottom two port s break connection to the unit and mak e
connection to the DTE.

SPECIFICATIONS

Network Interface

Line Rat e: 1.544 Mbps, ± 50 ppm (internal clock) , ± 200 bps (thro ugh mo de)
Line Framing: D4 or ESF (transparent)
Line Cod e: AMI or B8ZS
Input Signal: DS1, 0 to -30 dB ALBO
Connection: RJ-48C jack, 100 Ω (±5%)
Output Signal: 3.0 V (±15%) base-peak into 100 Ω
Line Build Out: 0, -7.5, -15, and -22.5 dB attenuation
Line Protection: 1000 V lightning, fused input/output
Keep Alive: Line loopback or all ones (framed or unframed)
Jitter Control: per TR62411 and T1.403
Pulse D e nsity: 15 or 175 ze ro s

Equipment Interface

Line Rat e: 1.544 Mbps, ± 50 ppm (internal clock) , ± 200 bps (thro ugh mo de)
Line Framing: D4 or ESF (transparent)
Line Cod e: AMI or B8ZS
Input Signal: DSX1 to -6 dB
Connection: RJ-48C jack, 100 Ω (±5%)
Output Signal: Selectable DSX1 level from 0 to 655 feet in six incremental levels

Diagnostics

Loopbac ks: Line loopback on network interface
Network BERT: 1 in 8 (B8ZS), 3 in 24 (AMI), Clear test, selectable framed/

unframed

Alarms

Network Activation: BPVs, all zeros, AIS
DTE Activation: Low density (>15 or > 175 zeros)
Reporting: Front panel LEDs and alarm contacts
Contact Ratings: U L 120 mA @ 110 VAC or 110 VDC
Connection: Terminal strip

Power

Local Power: 19 VDC to 60 VDC, 4.3 W, 15 BTU
Connection: Terminal strip

Mechanical

Mount ing: desktop, wall , horizontal or vertical rack
Dimensions: 1.72" W , 6.8" H, 10.5" D
Weight: 2 lbs

Industry Standards

FCC Co m pliance: Part 15 Subpar t B, Class A
FCC Part 68 Reg: FXKUSA-74937-DE-N
UL Approved: E110448
CSA Certified: LR98859

( B )
NMS

IN

Verilink 1051 Chassis Rear View

( B )
NMS
OUT

T1 DTE

High Speed DTE

(V.35 version also available)

( A )

NMS

IN

( A )
NMS
OUT

Chassis Connections

Pin T1 DTE T1 NET

1 Data O u t Data I n

123456789101112

2 Data O u t Data I n
3 Not used Not used
4 Data I n D a t a O ut
5 Data I n D a t a O ut
6 Not used No t us e d
7, 8 Signal Gnd Signal Gnd

12

11 10 9 8 7 6 5 4 3 2 1

Pin NMS In NMS Out

1 Not Used Not Used

T1 NET

123456789101112

2 Signal Gnd Signal Gnd
3 Data O ut Data O ut
4 Data I n Not Used
5 Signal Gnd Signal Gnd
6 Not Used Not Used

TB1 TB2

TB1 TB2

ENET

Circuit Board View

Switch S3

Black squares indicate direction

of factory default switch settings

Alarm Relay

7654321

Alarm Relay

NO
NC

This three-pin jumper straps the
ACO alarm contact. Position jump­er over pi ns 1 and 2 for normally
open operation (closes on alarm) or
over pins 2 and 3 for normally
closed operation (opens on alarm) .

1
2
3

For futu re reference, a ll D IP sw itches
are provided with upper and lower
boxes to check according to the par­ticular user selectio n. Factory default
settings are shown underlined

.

Switc h S2 (front pane l)

Keep Alive

All Ones

Keep Alive

Unframed

Test Mode

BERT

Test Code

B8ZS

Test Pattern

Framed

Zeros

15

Reserved

7654321

RightLeft

Keep Alive
Loop Back

Keep Alive
Framed

Test Mode
Clear

Test Code
AMI

Test Pattern
Unframed

Zeros
175

Reserved

Optional Alarm Card

2100
front

Fact ory set -

do not c hange

TXKX

panel

Network LBO: Sets the output
signal level of transmitted data.

Optional Alarm Card

The optional ACO/ alarm card monitors the

The telco should provide the
proper setting. If unsure of the
exact setting, set to 0 dB.

alarm indicators for an alarm active or an
alarm clear condition and provides closure
contact points on the rear panel. The corre­sponding front panel LED lights when an
alarm condition is detected on the four dif­ferent conditions shown below.

S3-1 S3- 2 L BO Level

Dn 0 dB

Dn
Dn Up -7.5 dB
Up Dn - 1 5.0 dB
Up Up - 2 2.5 dB

1) Network AIS (all ones)

2) Network LO S (all zeros)

3) Network BPVs

4) DTE ones densi ty

Switch S2 Desc rip tion

S3-6 Line Code

Up

: Line code transparent

Dn: DTE AMI –> NET B8ZS

7 Keep Alive: All Ones sends a consecuti v e sequ ence of al l ones back t o

the networ k. Loopback sends any signal coming from the network
back to the network.

6 Keep Alive: Unframed

transmits the Keep Alive signal without

framing. Framed adds framing information to the Keep Alive signal.

5 Tes t Mode: Clear

allows network access via test j acks to run bit error
tests (affects network test only). BERT allows the CSU to send a bit
error rate test pattern after the set signal (LOOP) is sent.

4 Tes t Code: B8ZS

allows the CS U to be transparent to a B8ZS code
coming from the network and sets the test signals to B8ZS. AMI shows
a BPV error for each event.

3 Test Pattern: Framed

indicates that the test signals (Set, Reset, and

BERT) are framed. ‘Unframed’ indicates the test signals are unframed.

2 Zeros: 15

allows 15 successive zeros from the DTE before the Keep

Alive mode is activated. 175 allows 175 zeros before activation.

1 Reserved.

Dn Up

Switch S3

7654321

DTE LBO: The tr ansmit o utput
level is selectable according to
the cable length from the CSU
DTE port to the T1 equipment.

S3-3 S3-4 S3-5 Distance

Up Dn 0'-133'

Up
Dn Dn Up 134'-266'
Up Dn Up 267'-399'
Dn Up Up 400'-533'
Up Up Up 534'-655'

S3-7 During Remote Loop

Up

:AIS to DTE

Dn: Network data to DTE

950 Explorer Blvd .

Huntsville, AL 35806

800 -926-0085

Product Technica l Sup port

(8 a.m. to 5 p. m . C en tral)

800 -285-2755 or

256 -327-2255

E-mail:

[e-mail]

Online:

www.verilink.com