Patton electronics 1110A Manual de usuario

USER

MANUAL

MODEL 1110A

Asynchronous, Carrier

Controlled Fiber Optic

Modem

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

http://www.patton.com

Part# 07M1110A-B

Doc# 018051UB

Revised 7/18/97

CERTIFIED

An ISO-9001

Certified Company

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1110A 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 1110A 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 1110A 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 1110A

does cause interference to radio or television reception, which can be

determined by disconnecting the RS-232 interface, 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).

1.2 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates

that it is in compliance with the Electromagnetic Compatibility (EMC)

directive and the Low Voltage Directive (LVD) of the Union European

(EU). A Certificate of Compliance is available by contacting Technical

Support.

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 (301) 975-1007, at our web site at

http://www.patton.com, or at [email protected].

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 1110A. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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 (301) 975-1007.

2.1 FEATURES

• Communicates over dual optical fibers

• Data rates to 19.2 Kbps

• Distances to 4 miles (6.44 km)

• Plugs directly into an RS-232 port

• Immune to RFI/EMI noise, ground loops and transient surges

• Easily accessible DCE/DTE switch

• DIP Switch-selectable carrier control

• Requires no AC power or batteries

• Two easy-to-read status indicators

• Fits into tight installation spaces

• Male or female DB-25 and SMA or ST connectors available

2.2 DESCRIPTION

The Patton Model 1110A miniature RS-232 fiber optic modem

brings fiber to the desktop. Communicating over dual optical fibers, the

Model 1110A supports data rates to 19.2 Kbps and distances to 4 miles

(6.44 km). The Model 1110A operates full or half duplex and plugs

directly into a workstation’s RS-232 port.

Like all fiber optic modems, the Model 1110A is inherently immune

to RFI/EMI noise, ground loops and transient surges. The carrier may

be switch selected as either “Continuously On” or “Controlled by RTS”,

while an easily accessible DCE/DTE switch eliminates the need for

cumbersome RS-232 crossover cables. Two easy-to-read LED

indicators monitor the status of carrier detect and fiber optic output.

Drawing all necessary power from the RS-232 interface, the Model

1110A requires no AC power or batteries to operate.

Measuring only 2.66” x 2.10” x .73”, the Model 1110A is able to fit

into tight installation spaces. A convenient pop-open/snap-shut ABS

plastic case allows easy access to configuration switches. On the

RS-232 side, the Model 1110A comes equipped with either a male or

female DB-25 connector; on the fiber side, it is available with a choice

of SMA or ST connectors.

3.0 CONFIGURATION

The Model 1110A is simple to install and is ruggedly designed for

excellent reliability. This section describes how to configure the Model

1110A’s DCE/DTE switch and how to set the internal DIP switches.

3.1 CONFIGURATION SWITCHES

The Model 1110A uses a DTE/DCE switch and a 4 position internal

DIP switch that allow configuration to wide range of applications.

Figure 1, below, shows the position of the DIP switch and the DCE/DTE

switch on the top of the Model 1110A PC board.

3.1 SETTING THE EXTERNAL DCE/DTE SWITCH

For your convenience, the Model 1110A has an externally

accessible DCE/DTE switch (see Figure 2, below). If the device

connected to the Model 1110A is a PC, terminal (or is wired like one),

set the switch to “DCE” (Default Setting). This causes the Model 1110A

to behave like Data Communications Equipment and transmit data on

pin 3. If the device connected to the Model 1110A is a modem or

multiplexer (or is wired like one), set the switch to “DTE”. This causes

the Model 1110A to behave like Data Terminal Equipment and transmit

data on pin 2.

Figure 1. Model 1110A PC board, showing switch and strap locations

Figure 2 Externally accessible DCE/DTE switch

Default Setting = “DCE”

DCE DTE

3 4

1234

DCE/DTE

Switch

DIP Switches

DTE

DCE

3.2 SETTING INTERNAL DIP SWITCHES

The Model 1110A uses four internal DIP switches that allow

configuration for a wide range of applications. In order to set the

internal DIP switches, you must open the Model 1110A case.

NOTE: Before opening the case, determine whether the default

settings are correct for your application (see Section 3.2.2).

3.2.1 Opening the Case

To open the Model 1110A case, insert a flat head screw driver

between the case lip and DB-25 connector (see Figure 3).

Twist the screw driver head slightly and the top half of the case will

separate from the lower half, as in Figure 4, below.

To set the switches, use a small screwdriver and gently push each

switch to its proper setting. Finally, fit the case halves together and

push to snap closed.

3.2.2 Configuration Switch Set “S1”

The switches on DIP switch S1 are used to set the RTS/CTS delay

and the method of carrier control. Figure 5 shows the orientation of the

switches on DIP Switch S1 with respect to ON/OFF positions.

The default settings for DIP switch S1 are shown in the table below.

Detailed descriptions of each switch follow the table.

Switches S1-1 & S1-2: RTS/CTS Delay

The combined settings for switches S1-1 and S1-2 determine the

amount of delay between the time the Model 1110A “sees” RTS and

then sends CTS to the DTE device. Options are no delay, 9.5 ms and

79.5 ms.

S1-1 S1-2 Setting

Off Off No delay

On On 9.5 ms

On Off 79.5 mS

On Off Not a Valid Setting

5 6

Figure 5. Close-up of DIP Switches Showing “ON” and “OFF” Positions

1234

OFF

S1 SUMMARY TABLE

Position Function Factory Default

S1-1 RTS/CTS Delay On

S1-2 RTS/CTS Delay On

S1-3 Carrier Control Off Constant

S1-4

Factory Use Only

Off*

}9.5 mS

* Indicates Mandatory Setting

Figure 3. Using a small screwdriver to separate the Model 1110A case

Figure 4. Using a small screwdriver to separate the Model 1110A case

Switch S1-3: Carrier Control Method

The setting for switch S1-3 determines whether the carrier is

“constantly on” or “controlled by RTS”. This setting allows for operation

in switched carrier or hardware handshaking applications.

S1-3 Setting

Off Constantly on

On Controlled by RTS

Switch S1-4: Factory Use Only

This switch is

reserved for factory use

and must remain in the

OFF position.

S1-4 Setting

Off Normal Operation

On Not a Valid Setting

4.0 INSTALLATION

The Model 1110A is easy to install. After configuring the DIP

switches, simply connect the two fiber cables and then connect the

RS-232 interface. Figure 6 (below) shows the location of the fiber

connections on the Model 1110A’s rear panel.

4.1 FIBER CONNECTIONS

The Model 1110A short range modems are designed to work in

pairs

. You will need one at each end of a dual fiber cable. This cable

connects to each Model 1110A using either an ST or an SMA

connector. Figure 7 (below) shows a close up of each of these

connector types.

7 8

Figure 7. Close up of ST and SMA connections

SMA

Alignment pin

faces down

Figure 6. Rear panel of the Model 1110A, showing fiber connections

4.2 RS-232 CONNECTION

Because the Model 1110A is designed to behave as either a DCE

or a DTE device, it does not need special cables to operate. Always

use a

straight-through

RS-232 cable.

5.0 OPERATION

Once you have configured each Model 1110A properly and

connected the fiber and RS-232 cables, you are ready to operate the

units. This section describes the LED status monitors and the power

up process.

5.1 LED STATUS MONITORS

The Model 1110A features two status LEDs that indicate the

condition of carrier detect and fiber optic output. Figure 8 (below)

shows the back panel location of each LED. Following Figure 8 is a

description of each LED’s function.

• The “Carrier Detect” LED will glow red when a proper carrier

frequency is recognized.

• The “Fiber Optic Output” LED will glow red to indicate

presence of infrared output and transmit carrier

5.2 POWER UP

Once the Model 1110A is properly installed, it should operate

transparently—as if it were a standard cable connection. Since

operating power is derived from the RS-232 data and control signals;

there is no “ON/OFF” switch. All data signals from the RS-232

interface are passed straight through.

When the local and remote Model 1110A’s are both powered up

and passing data normally, the following LED conditions will exist:

• Carrier detect = solid red

• Fiber optic output = solid red

9 10

Figure 8. Back panel view of the Model 1110

Transmit FiberReceive Fiber LEDs

Carrier Detect Fiber Optic Output

Notice! Any terminal cable connected to the Model

1110A must be shielded cable, and the outer shield must

be 360 degree bonded–at both ends–to a metal or

metalized backshell.

APPENDIX B

PATTON MODEL 1110A PIN CONFIGURATIONS

RS-232 Pin Description

(DB-25 Female Connector)

APPENDIX A

PATTON MODEL 1110A 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 - 19.2 Kbps

Distance: 4 mile (6.43km) over continuous fiber

(62.5/125mm)

RTS/CTS Delay: Switch-selectable: No delay, 9.5 mS, 79.5

Receiver Sensitivity: ≥-44dBm

Coupled Power Output: -22 to -25dBm (in 62.5/125mm cable)

Optic Wavelength: 850 nm

LED Indicators: Carrier Detect and Fiber Optic Output

Connectors: DB-25 male or female on RS-232 side; ST

or SMA connectors on fiber side

Power Supply: No external power required; uses power

from RS-232 data and control signals

Temperature Range: 0-50°C (32-122°F)

Altitude: 0-15,000 feet

Humidity: Up to 95% non-condensing

Weight: 2 oz.

Dimensions: 2.66” x 2.10” x 0.73”

1- (FG) Frame Ground

2- (TD) Transmit Data To Model 1110A

3- (RD) Receive Data From Model 1110A

4- (RTS) Request to Send To Model 1110A

5- (CTS) Clear to Send From Model 1110A

6- (DSR) Data Set Ready From Model 1110A

7- (SG) Signal Ground

8- (DCD) Data Carrier Detect From Model 1110A

To Model 1110A Data Term. Ready (DTR) - 20

DIRECTION “DCE” STANDARD SETTING DIRECTION

1- (FG) Frame Ground

2- (TD) Transmit Data From Model 1110A

3- (RD) Receive Data To Model 1110A

4- (RTS) Request to Send From Model 1110A

5- (CTS) Clear to Send To Model 1110A

6- (DSR) Data Set Ready To Model 1110A

7- (SG) Signal Ground

8- (DCD) Data Carrier Detect To Model 1110A

From Model 1110A Data Term. Ready (DTR) - 20

DIRECTION “DTE” STANDARD SETTING DIRECTION

11 12

13 14

APPENDIX D

PATTON MODEL 1110A BLOCK DIAGRAM

APPENDIX C

PATTON MODEL 1110A FIBER OPTIC CABLE DATA

The Model 1110A operational distance over multi-mode fiber optic

cable may be determined based upon the following measured

attenuation values:

COMMON ATTENUATION VALUES FOR MULTIMODE FIBER

Core/Cladding Attenuation Values (dB/km @850 nm)

(in microns) Excellent Very Good Good Fair

50/125 2.50 2.75 3.00 4.00

62.5/125 3.00 3.25 3.50 4.00

100/140 4.00 4.50 5.00

MODEL 1110A

BLOCK DIAGRAM

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