Patton electronics MODEL 1075, KiloModem II 1075 User Manual

USER
MANUAL

MODEL 1075

KiloModem II AC
Powered, High-Speed
X.21 Short-Range Modem

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

Part #07M1075-B
Doc: 054081U, Rev. C
Revised 1/23/08

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An ISO-9001

Certified Company

1.3 SERVICE

All warranty and nonwarranty 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: [phone]; http://www.patton.com: or,

[e-mail].

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 1075. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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3.0 CONFIGURATION

The Model 1075 is easy to install and is ruggedly designed for
excellent reliability. The following instructions will help you to properly
configure the Model 1075.

3.1 CONFIGURATION SWITCHES

The Model 1075 uses a unique set of 16 external mini DIP
switches that allow configuration to wide range of applications. The 16
external switches are grouped into two eight-switch sets, and are
externally accessible from the underside of the Model 1075 (See Figure

1).

The two sets of DIP switches on the underside of the Model 1075
will be referred to as S1, S2. Figure 2 shows the orientation of DIP
Switches S1 and S2 with respect to “ON” and “OFF” positions.

4

12345678

ON

Figure 2. Close-up of DIP Switches Showing “ON” / “OFF” Positions

ON

OFF

ON

12345678ON12345678

S1 S2

Figure 1. Underside of the 1075 Showing Location of DIP Switches

Front

Rear

Switches S2-1 and S2-2: Data Rate

Switches S2-1 and S2-2 are set in combination to determine the

synchronous data rate for the Model 1075.

S2-1

S2-2 Setting

Off On 32 kbps

On Off 56 kbps

On On 64 kbps

Switches S2-3 and S2-4: System Clock Mode

The setting for switches S2-3 and S2-4 determines the transmitter

clocking mode for the Model 1075.

S2-3

S2-4 Clock Mode Description

On On Internal System clock

generated internally

On Off External (DTE) System clock derived

from terminal interface

Off On Receive Recover System clock derived

from the received line
signal.

Switch S2-5: Carrier Control

S2-5

Carrier Description

Off Always On Transmitter is always ON

On Follows terminal Transmitter controlled by “Control”

signal from X.21DTE (or by
“Indication” signal from X.21 DCE)

Switches S2-6 and S2-7: Not Assigned

Switch S2-8: Front Panel Switch Enable/Disable

Switch S2-8 determines whether the front panel switches may be

used to perform diagnostic functions.

S2-8

Activation Description

On Enabled Front panel switches may be used

to activate/terminate diagnostics.

Off Disabled Front panel switches will have no

effect on operation of the unit.

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3.2.2 Location of the Internal Straps

Figure 5 (below) shows the location of the DCE/DTE switch and the
JP1 strap on top side of the the PC board.

3.2.3 Setting the DCE/DTE Strap

The X.21 interface on the Model 1075 is DCE/DTE switchable.

The default setting is DCE, based upon how the Model 1075 sees its

own

orientation. When configured this way, the Model 1075 will want to

connect to an X.21 DTE

device. Re-positioning the DCE/DTE strap will

enable the Model 1075 to connect to an X.21 DCE

device (See Figure

6, below).

The X.21 DCE/DTE strap is located near the DB-15 connector on
the PC board. The arrows on the top of the strap indicate the
configuration of the Model 1075. For example, if the DCE arrows are
pointing toward the DB-15 Connector, the Model 1075 is configured as
a “DCE” and must connect to an X.21 DTE device.

To change the DCE/DTE orientation of the Model 1075 X.21
interface, simply remove the strap and rotate it 180

o

so the appropriate

arrows are pointing toward the DB-15 Connector.

Figure 5 . Position of DTE/DCE and JP1 Jumper Straps on Model 1075 PC Board

DTE

DCE

DTE/DCE Strap

Figure 6 . Close-Up of Model 1075 PC Board With Close-up of DCE/DTE Strap

Default Setting = “DCE”

DTE

DCE

JP1 Strap

Front

Rear

4.0 INSTALLATION

When you have properly configured the configuration switches and
straps, you are ready to connect the Model 1075 to connect to your
system. This section tells you how to properly connect the Model 1075
to the twisted pair.

4.1 CONNECTION TO THE TWISTED PAIR INTERFACE

The Model 1075 supports full or half duplex communication
between two X.21 devices at distances to 6 miles (9.7 km) and data
rates to 64 kbps. There are two essential requirements for installing
the Model 1075:

1. These units work in pairs. Therefore, you must have one

Model 1075 (or compatible unit) at each end of a two twisted
pair interface.

2. To function properly, the Model 1075 needs two twisted pairs

of metallic wire. These pairs must be unconditioned, dry
metallic wire, between 19 and 26 AWG (the higher number
gauges may limit distance somewhat). Standard dial-up
telephone circuits, or leased circuits that run through signal
equalization equipment, are not acceptable.

For your convenience, the Model 1075 is available with two
different twisted pair interface options: RJ-11 jack or RJ-45 jack.

4.1.1 Twisted Pair Connection Using RJ-11 OR RJ-45

The RJ-11 and RJ-45 connectors on the Model 1075's twisted pair
interface are pre-wired for a standard TELCO wiring environment. The
signal/pin relationships are shown below.

RJ-1

1 SIGNAL RJ-45 SIGNAL

1...................GND 1 .................N/C

2...................RCV 2 .................GND

3...................XMT 3 .................RCV

4...................XMT 4 .................XMT

5...................RCV 5 .................XMT

6...................GND 6 .................RCV

7 .................GND

8 .................N/C

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4.3 AC POWER CONNECTIONS

Power is supplied to the Model 1075 by a 9 VDC, 1 A wall mount
transformer. This transformer connects to the Model 1075 by means of
a cannon jack on the rear panel. The Model 1075 is powered-up as
soon as it is plugged into an AC outlet–there is no power switch.

120 VAC Power (US)

The 120 VAC adapter supplied with the standard version of the
Model 1075 is a “wall mount” type, and may be plugged into any
approved 120 VAC wall plug.

230 VAC Power (IEC)

The 230 VAC adapter supplied with the international version of the
Model 1075 is equipped with an IEC-320 shrouded male connector.
This connects with one of several available country-specific power
cords (see the ordering information in Appendix C.) You may
purchase these power cords from Patton Electronics at: (301) 975-
1007; http://www.patton.com; or, [e-mail]; or from a
local vendor.

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5.2 TEST MODES

The Model 1075 offers two V.54 test modes to evaluate the
condition of the modems and the communication link. These tests are
activated from the front panel.

5.2.1 Local Analog Loopback (LAL)

The Local Analog Loopback (LAL) test checks the operation of the
local Model 1075, and is performed separately on each unit. Any data
sent to the local Model 1075 in this test mode will be echoed (returned)
back to the user device. For example, characters typed on the
keyboard of a terminal will appear on the terminal screen. To perform a
LAL test, follow these steps.

A. Activate LAL. This may by moving the front panel toggle

switch DOWN to LAL. Once LAL is activated, the Model 1075
transmitter output is connected to its own receiver. The test
LED should be lit.

B. Verify that the data terminal equipment is operating properly

and can be used for a test. If a fault is indicated, call a
technician or replace the unit.

C. Perform a Bit Error Rate (BER) test on each unit. If the BER

test equipment indicates no faults, but the data terminal
indicates a fault, follow the manufacturer’s checkout
procedures for the data terminal. Also, check the interface
cable between the terminal and the Model 1075.

5.2.2 Remote Digital Loopback (RDL)

The RDL test checks the performance of both the local and remote
Model 1075, and the communication link between them. Any
characters sent to the remote Model 1075 in this test mode will be
returned back to the originating device. For example, characters typed
on the keyboard of the local terminal will appear on the local terminal
screen after having been passed to the remote Model 1075 and looped
back. To perform an RDL test, follow these steps:

A. Activate RDL by moving the front panel toggle switch UP to

RDL.

B. Perform a BER test on the system.

(cont)

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APPENDIX A

PATTON MODEL 1075 SPECIFICATIONS

Approvals: CE European Directives

DTE/DCE I/F: X.21 DB15F DCE or DTE, EIA RS-422

Compliant

Compatibility: 1035, 1045 , 1075, 1080A, 1090 series units

Transmission

Format: Synchronous

Transmission Unconditioned twisted pair 19 - 26 AWG

Line Interface: Externally accessible RJ-45 (RJ-11

Optional)

Clock Internal, External and Network (Receive

Recover)

Distance: Up to 6 miles (9.7km)

Interfaces: CCITT/ITU X.21

Data Rates: 32, 56 and 64 Kbps (switch selectable)

Isolation: 1500V RMS via isolation transformers

Surge Protection: IEC-801-S, Level 2, 1kV

Carrier Control Constantly on or Controlled by “Control”

from DTE device (DCE mode) or
“Indication” from DCE device (DTE mode)

Connectors: DB-15 female

RJ-11 or RJ-45 on line side

Power Supply: 9V DC wall-mount transformer, 200mA

Temperature

Range: 0-60°C (32-140°F)

Altitude: 0-15,000 feet

Humidity: 5 to 95% noncondensing

Dimensions: 1.54H x4.1”W x 3.7”D

Power Options: 120 VAC 50/60Hz, external transformer;

230 VAC 50/60Hz, external transformer

Weight: 2.5 lbs. (1.1 Kg)

APPENDIX C

MODEL 1075 X.21 Interface

DB15 Female

Pin Signal Source

1 Shield ­2 Transmit (a) DTE
3 Control (a) DTE
4 Receive (a) DCE
5 Indication (a) DCE
6 System Clock (a) DCE
7- ­8 Signal Ground ­9 Transmit (b) DTE
10 Control (b) DTE
11 Receive (b) DCE
12 Indication (b) DCE
13 System Clock (b) DCE
14 - ­15 - -

Dear Valued Customer,

Thank you for purchasing Patton Electronics products! We do

appreciate your business. I trust that you find this user manual helpful.

We manufacture one of the widest selections of data communications
products in the world including CSU/DSU's, network termination units,
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We would like to hear from you. Please contact us in any of the
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It is our business to serve you. If you are not satisfied with any
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