Patton electronics DigiLink-V 2530 User Manual

USER
MANUAL

MODEL 2530

DigiLink-V™

All-Rate DDS CSU/DSU

SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
http://www.patton.com

Part# 07M2530-B
Doc# 099101UB
Revised 02/09/99

CERTIFIED

An ISO-9001

Certified Company

TABLE OF CONTENTS

Section Page

1.0 Warranty Information.............................................................2

1.1 Radio and TV Interference

1.2. CE Notice

1.3 Service Information

2.0 General Information...............................................................4

2.1 Features

2.2 Description

3.0 Configuration..........................................................................5

3.1 Configuring the Hardware DIP Switches

3.1.1 DIP Switch Set “S1”

3.1.2 DIP Switch Set “S2”

3.1.3 DIP Switch Set “S3”

3.2 Configuring the Software Switches

3.2.1 Introduction to MAIN MENU

3.2.2 Configuring the Remote 2530

3.3 Power Connection

4.0 Installation ...........................................................................20

4.1 Connecting the Serial Port

4.1.1 Changing

QuikConnect™

Modules

4.1.2 Connecting a “DTE” Device

4.1.3 Connecting a “DCE” Device

4.1.4 Configuring the X.21

QuikConnect™

Module

4.2 Connecting the Twisted Pair Interface

4.3 Connecting Power

4.3 Control Port Interface

4.3.1 Connecting to an AC Power Source

4.3.2 Connecting to a DC Power Source

5.0 Operation .............................................................................24

5.1 Power- Up

5.2 LED Status Monitors

5.3 Loop (V.54 and Telco) Diagnostics

5.3.1 Operating Local Analog Loopback (LAL)

5.3.2 Operating Remote Digital Loopback (RDL)

5.3.3 Telco Testing

5.4 Bit Error Rate (V.52) Diagnostics

Appendix A - Specifications........................................................29

Appendix B - Factory Replacement Parts and Accessories.......30

Appendix C - Interface Pin Assignments....................................32

Appendix D - Control Port Pin Assignments...............................34

1

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 2530 components to be

free from defects, and will—at our option—repair or replace the product
should it fail within one year from the first date of shipment.

This warranty is limited to defects in workmanship or materials,
and does not cover customer damage, abuse or unauthorized modifi­cation. If this product fails or does not perform as warranted, your sole
recourse shall be repair or replacement as described above. Under no
condition shall Patton Electronics be liable for any damages incurred
by the use of this product. These damages include, but are not limited
to, the following: lost profits, lost savings and incidental or consequen­tial damages arising from the use of or inability to use this product.
Patton Electronics specifically disclaims all other warranties,
expressed or implied, and the installation or use of this product shall be
deemed an acceptance of these terms by the user.

1.1 RADIO AND TV INTERFERENCE

The Model 2530 generates and uses radio frequency energy, and
if not installed and used properly—that is, in strict accordance with the
manufacturer's instructions—may cause interference to radio and tele­vision reception. The Model 2530 has been tested and found to com­ply with the limits for a Class A computing device in accordance with
the specifications in Subpart J of Part 15 of FCC rules, which are
designed to provide reasonable protection from such interference in a
commercial installation. However, there is no guarantee that interfer­ence will not occur in a particular installation. If the Model 2530 does
cause interference to radio or television reception, which can be deter­mined by disconnecting the unit, the user is encouraged to try to cor­rect the interference by one or more of the following measures: moving
the computing equipment away from the receiver, re-orienting the
receiving antenna and/or plugging the receiving equipment into a differ­ent AC outlet (such that the computing equipment and receiver are on
different branches).

1.3 FCC INFORMATION

The Model 2530 has been tested and registered in compliance
with the specifications in Part 68 of the FCC rules. A label on the
equipment bears the FCC registration number. You may be requested
to provide this information to your telephone company.

Your telephone company may make changes in its facilities, equip­ment, operations or procedures that could affect the proper operation
of the Model 2530. If this happens, the telephone company should
give you advance notice to prevent the interruption of your service.

2

The telephone company may decide to temporarily discontinue
your service if they believe your Model 2530 may cause harm to the
telephone network. Whenever possible, they will contact you in
advance. If you elect to do so, you have the right to file a complaint
with the FCC.

If you have any trouble operating the Model 2530, please contact
Patton Technical Support at [phone]. The telephone company
may ask you to disconnect the equipment from the telephone network
until the problem has been corrected or until you are certain that the
Model 2530 is not malfunctioning.

The following information may be required when applying to your
local telephone company for leased line facilities:

Service Digital Facility Service Order Network

Type Interface Code Code Jacks

2.4 Kbps Digital Interface 04DU5-24 6.0F RJ48S

4.8 Kbps Digital Interface 04DU5-48 6.0F RJ48S

9.6 Kbps Digital Interface 04DU5-96 6.0F RJ48S
56 Kbps Digital Interface 04DU5-56 6.0F RJ48S

Note: As of this publication date, 19.2 and 64Kbps digital servic-

es have not been assigned Digital Facility Interface Codes.

1.3 SERVICE

All warranty and non-warranty repairs must be returned freight pre­paid and insured to Patton Electronics. All returns must have a Return
Materials Authorization number on the outside of the shipping contain­er. This number may be obtained from Patton Electronics Technical
Service at

tel: [phone];

email: [e-mail]

www: http://www.patton.com.

NOTE: Packages received without an RMA number will not be

accepted.

Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 2530. Technical Ser vice hours: 8AM to 5PM EST, Monday

through Friday.

3

2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is warrant­ed for One Year parts and labor. If any questions or problems arise
during installation or use of this product, please do not hesitate to con­tact Patton Electronics Technical Support at [phone].

2.1 FEATURES

• Operates over 4-wire dedicated digital lines

• Synchronous Data Rates: 2.4, 4.8, 9.6, 19.2, 56,nd 64 kbps

• Asynchronous Data Rates: 2.4, 4.8, 9.6, 19.2, and 38.4 kbps

• Field Replaceable DTE-DCE

QuikConnect™

interface modules:
V.24/RS-232, V.35, RS-422/530, G.703, X.21 and ethernet
bridge

• Features V.52 BER and V.54-compliant loop diagnostics

• 511 and 2047 Bit Error Rate Tests

• 24 Easy-to-read LED indicators to monitor data signals

• Internal, external, received loopback and campus clock modes

• AT&T 62310 compliant

• Can be used as a high speed modem for private twisted pair

• Made in the USA

2.2 DESCRIPTION
The Model 2530 Series

DigiLink-V™

CSU/DSUs provide DDS

access in feature-filled package. Employing Patton’s

QuikConnect™

interchangeable DTE/DCE interface modules, Model 2530 allows oper­ation with a variety of devices. With sync operation up to 64 kbps or
async support up to 57.6, Model 2530 is unmatched for versatility, reli­ability and “no hassle” connectability.

Model 2530 is AT&T 62310 compliant and supports DDS, Clear

Channel 64 and other digital services available from major service
providers. Configure the Model 2530 for the application environment
using externally accessible hardware DIP switches or via menu-driven
software switches. After installation, easy-to-read front panel LED indi­cators monitor data and control signals. Model 2530 also offers con­venient V.52 BER and V.54-compliant loop diagnostics.

The Model 2530 features replaceable DCE-DTE interface mod­ules. Available interfaces include V.24/RS-232, V.35, RS-422/530,
G.703, X.21 and ethernet bridge. Line connection is made by RJ-48S
jack. Power supply options include 100-253VAC(universal) and 48VDC.

4

3.0 CONFIGURATION

The Model 2530 features configuration capability via hardware
switches or a software control port. This section describes all possible
hardware and software switch configurations of the Model 2530.

3.1 CONFIGURING THE HARDWARE DIP SWITCHES

The Model 2530 has 24 DIP switches that allow configuration to
wide range of applications. The 24 switches are grouped into three
eight-switch sets, and are externally accessible from the underside of
the Model 2530 (See Figure 1).

The three sets of DIP switches on the underside of the Model 2530
will be referred to as S1, S2, and S3. Figure 2 shows the orientation of
all DIP switches with respect to “ON”and “OFF” positions.

5

3.1.1 DIP Switch Set “S1”

The DIP switches on set S1 may be used to configure the DTE
rate, RTS/CTS delay, anti-stream timer, data format, character length
and Extended Signalling Rate (ESR) Default settings and detailed
descriptions for each switch in the set are shown below.

Switches S1-1, S1-2, and S1-3: DTE Rate

Use Switches S1-1 and S1-2 to configure the DTE rate of the
Model 2530. This rate represents the synchronous or asynchronous
rate at which the DTE must connect to Model 2530’s

QuikConnect™

interface.

S1-1 S1-2 S1-3 DTE Rate

On On On 2.4 kbps

On On Off 4.8 kbps

On Off On 9.6 kbps

Off On Off 19.2 kbps

Off On On 38.4 kbps

Off Off Off DTE Rate = Line Rate

Switch S1-4: RTS/CTS Delay

The RTS/CTS delay is the amount of time it takes for CTS to
change logic state following an RTS transition.Use Switch S1-4 to
select the RTS/CTS delay (measured in

msec

.).

S1-4 Delay 56 19.2 9.6 4.8 2.4

Off Normal 0.3 0.9 1.9 3.8 7.5

On Extended 1.3 3.8 7.5 15 30

6

ON

12345678

ON

12345678

ON

12345678

Figure 1. Underside of Model 2530, Showing Location of DIP Switches

Front

Back

S2
S3

S1

ON

OFF

Figure 2. Close Up of Configuration Switches (all three sets are identical in appearance)

ON

12345678

ON

OFF

S1 SUMMARY TABLE

Position Function Factory Default

S1-1 DTE Rate Off
S1-2 DTE Rate Off
S1-3 DTE Rate Off
S1-4 RTS/CTS Delay Off Normal
S1-5 Anti-Stream Timer Off Off
S1-6 Data Format Off Synchronous
S1-7 Character Length Off 10 Bits
S1-8 Extended Signal Rate Off Off

DTE Rate

equals

Line Rate

}

Switch S1-5: Anti-Stream Timer

The anti-stream timer protects multidrop networks from a drop that
is continuously transmitting. If the DTE keeps RTS raised for more
than the Time Value in seconds, the timer forces RTS off internally.
This allows the rest of the multidrop network to resume operation. The
CSU/DSU remains in the forced-off condition until the terminal drops
RTS. Use Switch S1-5 to enable the timer.

Timer Value in Sec at Various Line Rates
S1-5 Timer 56 19.2 9.6 4.8 2.4
On Disabled

not applicable

Off Enabled 2 4 8 15 30

Switch S1-6: Data Format

Use Switch S1-6 to configure the Model 2530 for synchronous or

asynchronous connection to the DTE.

S1-6

Setting
Off Synchronous
On Asynchronous

Switch S1-7: Asynchronous Character Length

Set Switch S1-7 to configure the total number of asynchronous

bits per asynchronous character (when Switch S1-6 is set to “On”).

S1-7

Setting
Off 10 bits
On 11 bits

NOTE: The total asynchronous character is determined by sum of
all start bits, data bits, stop bits and parity bits. For instance:

1

start bit + 8data bits + 1stop bit + 0parity bits = 10

bits

7

Switch S1-8: Extended Signaling Rate

Use S1-8 to configure the frequency tolerence the Model 2530
“looks for” in asynchronous data rates (i.e., the actual variance from a
given frequency level the Model 2530 Series will tolerate).

S1-8 Setting

Off -2.5% to +1%

On -2.5% to +2.3%

3.1.2 DIP Switch Set “S2”

The DIP switches on set S2 may be used to configure the line
rate, clock mode, force RTS, and DSR status during local loop. Default
settings and detailed descriptions for each switch in the set are shown
below.

Switches S2-1, S2-2 and S2-3: Line Rate

Use Switches S2-1, S2-2, and S2-3 to configure the signalling rate
on the line (RJ-48S port). The setting should match the speed of your
digital service.

S2-1

S2-2 S2-3 Line Rate
On On On 2.4 kbps
On On Off 4.8 kbps
On Off On 9.6 kbps
On Off Off 19.2 kbps
Off On On 56 kbps
Off On Off 64 kbps
Off Off Off Forces configuration

pointer to default to
hardware control.

8

SW2 SUMMARY TABLE

Position Function Factory Default

SW2-1 Line Rate Off
SW2-2 Line Rate On
SW2-3 Line Rate On
SW2-4 Clock Mode Off
SW2-5 Clock Mode Off
SW2-6 Force RTS Signal Off Disabled
SW2-7 DSR During Local Loop Off Off
SW2-8 Circuit Assurance Off Disabled

Network

56 kbps

}

}

Switches S2-4 and S2-5: Clock Mode

Use Switches S2-4 and S2-5 to set the source of Model 2530’s

transmit clock.

S2-4

S2-5 Clock Mode Description

Off On External (DTE) Transmit clock derived

from terminal interface

Off Off Network (Looped) Transmit clock derived

from the received line
signal; Use this mode
for Dedicated DDS
operation

On On Internal (Master) Transmit clock derived

internally

On Off Campus Clock Transmit clock derived

from the received line
signal. Allows remote
device (in

campus

clock

mode) to initiate
V.54 loopback. For use
only in campus short­haul configuration.
(Note: Local device must
be set in

internal

clock

mode.)

Switch S2-6: Force RTS

Use S2-6 to force the transmitter ON, thereby ignoring the DTE’s
RTS signal. In the Off position, RTS controls the transmitter by forcing
it to send either the DTE data or an idle pattern.

S2-6

RTS Description

On Forced On Transmitter is always ON

Off Follows The RTS input controls the

DTE Signal transmitter

NOTE: At 64 kbps Force RTS is always on.

9

Switch S2-7: Data Set Ready During LOCAL Loopback Test

Use Switch S2-7 to control the behavior of the DSR signal at the

DTE interface during the local loopback test.

S-3 Setting
On DSR is on during local line loop
Off DSR is off during local line loop

Switch S2-8: Circuit Assurance

On dedicated circuits, the transmitter and the CTS output can be
configured to go ON only when a working communication circuit is
established. If Circuit Assurance is used, enable it on only one end of
the communication link. Use Switch S2-8 to configure circuit assur­ance.

Circuit

S2-8

Assurance Description

On Enabled CTS will go low and the

transmitter will be held off if the
receiver is in the No Signal state
or CD is low

Off Disabled The transmitter and CTS will

operate without regard to the
receiver state

10

Important:

For X.21 or Async cam­pus short haul modem applications,
please configure one Model 2530 for
internal clock mode and the other
Model 2530 for receive recover clock
mode.