Patton electronics 1140ARC User Manual

USER
MANUAL

MODEL 1140ARC

RS-232 Fiber Optic
Rack Card Modem
w/ V.54 & V.52 Diagnostics

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

Part #07M1140ARC-A
Doc #018032U

,
Rev. B
Revised 1/22/08

CERTIFIED

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 Support: [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 1140ARC. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

2

3.0 CONFIGURATION

This section describes the location and orientation of the Model
1140ARC’s configuration switches and jumpers, and provides detailed
instructions for all possible settings.

The Model 1140ARC uses a combination of DIP switches and
jumpers that allow configuration to an extremely wide range of
applications. Designed around a mid-plane architecture, the Model
1140ARC incorporates both front and rear cards. Configuration of both
may be necessary. The switches/jumpers are accessible when the
cards are removed from the rack chassis. Once configured, the Model
1140ARC is designed to operate transparently, without need for
frequent re-configuration.

3.1 FRONT CARD CONFIGURATION

The Model 1140ARC front card has two sets of eight switches (S1 &
S2), which are mounted on the PC board (Figure 1, below). These
configuration switches allow you to configure the Model 1140ARC for a
wide range of applications. The ON/OFF orientation of the DIP
switches is shown in figure 2 (below).

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Figure 1. Model 1140ARC front card jumper locations

Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions

12345678

ON

OFF

ON

Switch Set 1

(Switch 1:1 on bottom)

SwitchSet 2

(Switch 2:1 on bottom)

S1-5 and S1-6: Clock Source

Switches S1-5 and S1-6 are set in combination to determine the

transmit clock source for the Model 1140ARC.

S1-5

S1-6 Setting
On On Internal transmit clock
Off On Receive recover clock
On Off External transmit clock

S1-7: Asynchronous/Synchronous Mode

The setting for switch S1-7 determines whether the Model

1140ARC is in asynchronous or synchronous operating mode.

S1-7

Setting
On Asynchronous
Off Synchronous

S1-8: Carrier Control Method

The setting for switch S1-8 determines whether the carrier is

“constantly on” or “controlled by R

TS”. This setting allows for operation
in switched carrier, multipoint and/or hardware handshaking
applications.

S1-8

Setting
Off Constantly On
On Switched Carrier

6

S2-4 and S2-5: RTS/CTS Delay

The combined settings for switches S2-4 and S2-5 determine the
amount of delay between the time the Model 1140ARC “sees” RTS and
when it sends CTS. Options are no delay, 7 ms and 53 ms.

S2-4

S2-5 Setting
On On 7 mS
Off On 53 mS
On Off No delay
Off Off No delay

S2-8: V.54 Loopback Test Enable

To reset the V.54 circuit, set switch S2-6 to the “ON” position, then

back to the “OFF” position..

S2-8

Setting
Off V.54 Enable
On V.54 Disable

3.2 REAR CARD CONFIGURATION

The Model 1140ARC is compatible with two dual-fiber interface
cards, one with dual ST connectors and one with dual SMA connectors.
Both cards use an HD-26 female for the RS-232 interface. The single
configuration jumper (JB1) functions identically on both cards. Figure 3
(below) shows the jumper’s location.

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Figure 3. Model 1140ARC rear card jumper location

JB1

(pin 1 on right)

3 2 1

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4.0 INSTALLATION

This section describes the functions of the Model 1000R16 rack
chassis, tells how to install front and rear Model 1140ARC cards into
the chassis, and provides instructions for connecting the interface
cables.

4.1 THE MODEL 1000R16 RACK CHASSIS

The 1000R16 Rack Chassis (Figure 5, below) has sixteen short
range modem card slots, plus its own power supply. Measuring only

3.5” high, the 1000R16 is designed to occupy only 2U in a 19” rack.
Sturdy front handles allow the 1000R16 to be extracted and transported
conveniently.

4.1.1 THE RACK POWER SUPPLY

The power supply included in the Model 1000R16 rack uses the
same mid-plane architecture as the modem cards. The front card of
the power supply slides in from the front, and the rear card slides in
from the rear. They plug into one another in the middle of the rack.
The front card is then secured by thumb screws and the rear card by
conventional metal screws.

Figure 5. Model 1000R16 rack chassis with power supply

WARNING! There are no user-serviceable parts in the power

supply section of the Model 1140ARC. Voltage setting changes
and fuse replacement should only be performed by qualified
service personnel. Contact Patton Electronics Technical
support at [phone], http://www.patton.com, or
[e-mail] for more information.

4.3 WIRING UP THE MODEL 1140ARC

Both of the rear interface cards compatible with the Model
1140ARC have one RS-232 port and one dual-connector fiber port (see
Figure 6. below). Depending upon the card you have, the fiber port will
be either an ST or SMA connector. The RS-232 port is always a female
HD-26 connector.

4.3.1 RS-232 CONNECTION

The RS-232 port on the rear card of the Model 1140ARC is wired
as a DCE, and uses a female HD-26 connector. The HD-26 is an
alternate connector according to the EIA RS-232E specification, and
the pin-out is the same as a standard DB-25. Pin 26 is not used.

You will need an interface cable to connect the Model 1140ARC to
your RS-232 device. Assuming your RS-232 device is a DTE (PC,
host, terminal, workstation, etc.), the cable should be wired

straight

through

. You may either provide your own cable, or you may purchase
an HD-26 to DB-25 cable from Patton Electronics Company. Please
call the Patton Sales Department at [phone] for price and
delivery information.

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Dual SMA

Dual ST

Figure 6. Model 1140ARC interface card options

A1

TX

RX

A1

TX

RX

HD-26 F

HD-26 F

Notice! Any terminal cable connected to the Model 1140ARC

must be shielded cable, and the outer shield must be 360
degree bonded–at both ends–to a metal or metalized backshell.

5.0 OPERATION

Once you have configured each Model 1140ARC and connected the
cables, you are ready to operate the units. This section describes the
LED status monitors and power-up procedure.

5.1 LED STATUS MONITORS

The Model 1140ARC features ten front panel status LEDs that
indicate the condition of the modem and communication link:

• The green “PWR” LED glows when power is applied to the modem

card through its mid-plane chassis connection.

• The green “TD” and “RD” indicators blink to show positive state

data activity. The Red “TD” and “RD” indicators blink to show
negative state data activity. Solid red indicates an idle state.

• The green “RTS” and “CD” indicators glow solid to show the control

signal is on. The red “RTS” and “CD” indicators glow solid to show
the control signal is off. When the 1140ARC is connected to a
DTE, RTS will glow green for an incoming signal on RS-232 pin 4.
CD will glow green for an incoming signal from the line, and an
outgoing signal on RS-232 pin 8.

• The “Test” LED glows when either the Local Analog Loopback

(LAL) or Remote Digital Loopback (RDL) V.54 test mode is
initiated. The “Error” LED blinks when an error is detected by the
V.52 diagnostics.

5.2 POWER-UP

There is no power switch on the Model 1140ARC: Power is
automatically applied to the 1140ARC when its card-edge connector
makes contact with the chassis’ mid-plane socket, or when the chassis’
power supply is turned on.

Note: The 1140ARC is a “hot swappable”
card—it will not be damaged by plugging it in or removing it while the
rack is powered up.

When the local and remote units are

both

powered up, and are

passing data

normally

, the following LED conditions will exist:

• PWR = green

• TD & RD = flashing red and green

• RTS & CD = green

• Test = off

• Error = off
1413

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5.3.2 REMOTE DIGITAL LOOPBACK (RDL)

The Remote Digital Loopback (RDL) test checks the performance of

both the local and remote Model 1140ARCs,

and

the communication
link between them. Any characters sent to the remote 1140ARC 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
1140ARC and looped back. To perform an RDL test, follow these
steps:

1. Activate RDL. This may be done in two ways: First, by
moving the upper front panel toggle switch LEFT to “Remote”.
Second, by raising pin 21 on the RS-232 interface. (Note: be
sure DIP switch S2-8 is off).

2. Verify that the DTE equipment on the local end is operating
properly and can be used for a test.

3. Locate the lower of the two toggle switches on the front panel
of the 1140ARC and move it to the right. This will activate the
V.52 BER test mode and inject a “511” test pattern into the
remote loop. If any errors are present in the loop, the red
“Error” LED will blink sporadically.

4. If the BER test indicates

no errors

are present, move the V.52
toggle switch to the left, thus activating the “511/E” test with
periodic errors. If the test is working properly, the red “Error”
LED will light. A successful “511/E” test will confirm that the
loop is in place, and that the Model 1140ARC’s built-in “511”
generator and detector are working properly.

5. If the remote BER test indicates that errors

are

present, and
the local analog loopback/BER tests showed that both Model
1140ARCs were functioning properly, this suggests a problem
with the twisted pair communication line connecting the two
modems. A common problem is improper crossing of the
pairs. Also, verify that the modular connections are pinned
properly, and the twisted pair line has continuity. If you still
have errors, call Technical Support at [phone].

APPENDIX A

PATTON MODEL 1140ARC SPECIFICATIONS

Transmission Line: Dual optical cable

Transmission Mode: Asynchronous, half or full duplex, point-to-point

Interfaces: EIA RS-232, CCITT V.24

Data Rates: 0 - 57.6 Kbps

Distance: 4 miles over continuous fiber

RTS/CTS Delay: Switch-selectable: No delay, 7.0 mS, 53 mS

Receiver Sensitivity: -45 dBm

Coupled Power Output: -20 to -25 dBm

Optic Wavelength: 850 nm

LED Indicators: Power, TD, RD, RTS, CD, Test Mode, Error

Connectors: HD-26 female on RS-232 side; ST or SMA connectors

on fiber side

Power Supply: 120/240V (switchable) on rack chassis

Temperature Range: 0-60°C (32-140°F)

Altitude: 0-15,000 feet

Humidity: Up to 95% non-condensing

Weight: 2 oz.

Dimensions: 0.95”W x 3.1”H x 5.4”L

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APPENDIX C

PATTON MODEL 1140ARC PIN CONFIGURATIONS

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8 - (CD) Carrier Detect
7 - (SG) Signal Ground
6 - (DSR) Data Set Ready
5 - (CTS) Clear to Send
4 - (RTS) Request to Send
3 - (RD) Receive Data
2 - (TD) Transmit Data
1 - (FG) Frame Ground

UNIVERSAL D-26 INTERFACE (DCE WIRING)

Digital Loop (RDL) - 21

Data Terminal Ready (DTR) - 20

Analog Loop (LAL) - 18

Receiver Clock (RC - 17

Transmitter Clock (TC) - 15

Notes

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