Patton electronics 1040 Manual de usuario

USER

MANUAL

MODEL 1040

Self-Powered

Universal

Short Range Modem

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

http://www.patton.com

Part #07M1040-B

Doc. #054011UB

Revised 4/29/98

An ISO-9001

Certified Company

1.0 WARRANTY INFORMATION

Patton Electronicswarrants all Model 1040 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 shallPatton Electronicsbe 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 Electronicsspecifically 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 1040 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 1040 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 1040

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 Patton

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

telephone: (301) 975-1007,

web address: http://www.patton.com;

email: [email protected].

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 1040. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

3.0 CONFIGURATION

The Model 1040 is simple to install and is ruggedly designed for

excellent reliability: just set it and forget it. The following instructions

will help you set up and install the Model 1040 properly. If you have

any questions, don’t hesitate to call Patton Electronics Technical

Support at (301) 975-1007.

3.1 CONFIGURATION SWITCHES

The Model 1040 uses a unique set of sixteen external DIP

switches that allow configuration to an extremely wide range of

applications. These DIP switches are grouped into two eight-switch

sets and are externally accessible from the underside of the Model

1040 (see Figure 1). There is no need to open the Model 1040’s case

for configuration.

The configuration switches allow you to select data rates, clocking

methods, V.52 & V.54 tests, word lengths, extended signaling rates,

asynchronous or synchronous mode and 2- or 4-wire mode. The

drawings, text and tables on the following pages describe all switch

locations, positions and functions.

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

• Switch-selectable carrier control

• Synchronous or asynchronous operation

• No AC power or batteries required

• Data rates to 38.4 Kbps

• Distances to 12 miles (19.2 km)

• Point-to-point or multipoint operation

• Full or half duplex operation

• Internal, external or received loopback clocking

• V.54 loopback tests and V.52 compliant BER tests

• Automatic equalization

• Easy-to-read status LEDs

• Transformer isolation

• Silicon Avalanche Diode surge protection

2.2 DESCRIPTION

The Model 1040carrier controlled short range modem supports

synchronous and asynchronous data rates to 38.4 Kbps. Requiring no

AC power or batteries, the Model 1040 supports distances to 12 miles

over unconditioned twisted pair. The Model 1040 features front panel

LEDs, automatic equalization, V.52 compliant BER tests, both internal

and external clocking and V.54 loopback tests. Built-in transformer

isolation and surge protection provide protection against ground

potential differences and AC/DC over-voltages.

The Model 1040 is fully compatible with the Patton Model 1080A

and 1080ARC. This compatibility allows you to combine miniature,

standalone and rack mounted modems in a single system. In

synchronous mode, the Model 1040 is also compatible with the Models

1020, 1025 and 1030.

Housed in an ABS plastic case, the Model 1040 comes with either

a male or female DB-25 connector and a choice of interfaces (RJ-11

jack, RJ-45 jack or terminal blocks with strain relief).

Figure 1. The back of the Model 1040

SW1 SW2

3.2 CONFIGURATION SWITCH SETTINGS

The Model 1040 has two sets of eight switches, yielding 16 total

DIP switches. The two sets will be referred to as SW1 and SW2. As

Figure 2 shows, the orientation of all DIP switches is the same with

respect to “ON” and “OFF” positions.

3.3 SWITCH SET SW1

The DIP switches on SW1 set data rate, clock source, async./sync.

mode and carrier control method. The default settings are summarized

in the table below.

SW1-1 through SW1-4: Data Rate Setting

Switches SW1-1 through SW1-4 are set in combination to

determine the asynchronous and synchronous data rate for the Model

1040.

SW1-1 SW1-2 SW1-3 SW1-4 Setting

On On On On 1.2 Kbps

OffOn On On 1.8 Kbps

On OffOn On 2.4 Kbps

OffOffOn On 3.6 Kbps

On On Off On 4.8 Kbps

OffOn Off On 7.2 Kbps

On OffOff On 9.6 Kbps

OffOffOff On 14.4 Kbps

On On On Off19.2 Kbps

OffOn On Off28.8 Kbps

On On Off Off38.4 Kbps

SW1-5 and SW1-6: Clock Source

Switches SW1-5 and SW1-6 are set in combination to determine

the clock source for the Model 1040.

SW1-5 SW1-6 Setting

On On Internal transmit clock

OffOn Receive recover clock

On OffExternal transmit clock

SW1-7: Asynchronous/Synchronous Mode

The setting for switch SW1-7 determines whether the Model 1040

is in asynchronous or synchronous operating mode.

SW1-7 Setting

On Asynchronous

OffSynchronous

Figure 2. Close up of configuration switches

OFF

SW1 SUMMARY TABLE

Position Function Factory Default

SW1-1 Data Rate On

SW1-2 Data Rate Off

SW1-3 Data Rate Off

SW1-4 Data Rate On

SW1-5 Clock Source On

SW1-6 Clock Source On

SW1-7 Async./Sync. On Async.

SW1-8 Carrier Control OffConstantly On

Internal

9,600 bps

}

SW2-3: Extended Signaling Rate

The setting for switch SW2-3 determines the range of variability the

Model 1040 “looks for” in asynchronous data rates (i.e., the actual

variance from a given frequency level the Model 1040 will tolerate).

SW2-3 Setting

Off -2.5% to +1%

On -2.5% to +2.3%

SW2-4 and SW2-5: RTS/CTS Delay

The combined settings for switches SW2-4 and SW2-5 determine

the amount of delay between the time the Model 1040 “sees” RTS and

when it sends CTS. Options are no delay, 7mS and 53mS.

SW2-4 SW2-5 Setting

On On 7 mS

Off On 53 mS

On Off No delay

Off Off No delay

SW2-6 and SW2-7: 2-Wire/4-Wire Mode Selection

The setting for switch SW2-6 determines whether the Model 1040

is operating in 2-wire or 4-wire mode. Note: SW1-8 must be ON in

2-wire mode.

SW2-6 SW2-7 Setting

On On 4-wire (half duplex)

On Off 4-wire (full duplex)

Off On 2-wire (half duplex only)

SW2-8: V.52 and V.54 Diagnostic Tests

The setting for switch SW2-8 determines whether or not the Model

1040’s V.52 and V.54 tests will be enabled. To reset the V.54 circuit, set

switch SW2-8 to the “ON” position, then back to the “OFF” position.

SW2-8 Setting

On Disabled

OffEnabled

SW1-8: Carrier Control Method

The setting for switch SW1-8 determines whether the carrier is

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

in switched carrier, multipoint and/or hardware handshaking

applications. Note: SW1-8 must be “ON” in all 2-wire applications.

SW1-8 Setting

OffConstantly on

On Controlled by RTS

3.4 SWITCH SET SW2

The DIP switches on SW2 set word length, extended signaling

rate, RTS/CTS delay, 2-wire/4-wire and V.52/V.54 tests. The factory

default settings for Switch Set SW2 are summarized in the table below.

SW2-1 and SW2-2: Word Length

SW2-1 and SW2-2 are set in combination to determine the word

length for asynchronous/synchronous data.

SW2-1 SW2-2 Setting

OffOn 8 bits

On On 9 bits

OffOff10 bits

On Off11 bits

SW2 SUMMARY TABLE

Position Function Factory Default

SW2-1 Word Length Off

SW2-2 Word Length Off

SW2-3 Extended Signaling Off -2.5% to +1%

SW2-4 RTS/CTS Delay On

SW2-5 RTS/CTS Delay On

SW2-6 2/4 Wire On

SW2-7 2/4 Wire Off

SW2-8 V.52/V.54 Tests OffEnabled

7 mS

10 bits

}

4-wire/full dpx

}

4.0 INSTALLATION

Once the Model 1040 is properly configured, it is ready to connect

to your system. This section tells you how to connect the Model 1040

to the twisted pair and RS-232 interfaces.

4.1 CONNECTION TO THE TWISTED PAIR INTERFACE

The Model 1040 supports data-only communication between two

RS-232 devices at distances to 12 miles (19.2) and data rates to 38.4

Kbps. There are two essential requirements for installing the Model

1040:

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

1040 (or a compatible model) at each end of a two twisted pair

interface.

2. To function properly, the Model 1040 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 1040 is available with three

different twisted pair interfaces: RJ-11 jack, RJ-45 jack and terminal

blocks with strain relief.

4.1.1 TWISTED PAIR CONNECTION USING RJ-11 OR RJ-45

The RJ-11 and RJ-45 connectors on the Model 1040's twisted pair

interface are pre-wired for a standard TELCO wiring environment (see

Figure 5). The signal/pin relationships are shown on the table on the

following page.

RJ-11SIGNAL 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

†Connection to ground is optional

◊The Model 1040 is not polarity sensitive

When connecting two Model 1040s, it is necessary to use a

“crossover” cable. The diagram below shows how a crossover cable

should be constructed for an environment where both Model 1040s use

a 6-wire RJ-11 connector. Similar logic should be followed when using

RJ-45 connectors or a combination of the two.

SIGNAL PIN# COLOR ‡COLOR PIN# SIGNAL

GND†1Blue.................White 6GND†

RCV◊2Yellow..............Red 4XMT

XMT 3Green...............Black 5RCV

XMT 4Red..................Yellow 2RCV

RCV 5Black................Green 3XMT

GND†6White...............Blue 1GND†

†Connection to ground is optional

‡Standard color codes—yours may be different

◊The Model 1040 is not sensitive to polarity

4.1.2 TWISTED PAIR CONNECTION USING TERMINAL BLOCKS

If your application requires you to connect two pairs of bare wires

to the Model 1040, you must open the case to access the terminal

blocks. The instructions on the following pages will tell you how to

open the case, connect the bare wires to the terminal blocks and fasten

the strain relief collar in place so that the wires won't pull loose.

910

Figure 5.Standard AT&T color codes

1 - Blue

2 - Yellow

3 - Green

4 - Red

5 - Black

6 - White

1 - Blue

2 - Orange

3 - Black

4 - Red

5 - Green

6 - Yellow

7 - Brown

8 - Slate

1. Open the unit by gently inserting a screwdriver into the special

pry slot on the plastic case (below). Don't worry about

breaking the plastic, but make sure that you do not insert the

screwdriver more than 1/4” into the enclosure, as you may

damage the unit.

Once the unit has been opened, you will be able to see the

terminal blocks located at the rear of the PC board.

2. Strip the outer insulation from the twisted pairs about one inch

from the end.

3. Strip back the insulation on each of the 2 twisted pair wires

about .25”.

4. Connect one pair of wires to the two XMT (transmit) poles on

the terminal block. The Model 1040 is not polarity sensitive,

so either wire may connect to either pole.

5. Connect the other pair of wires to the two RCV (receive) poles

on the terminal block.

Ultimately, you will want to construct a two-pair crossover

cable that makes a connection with the two Model 1040s as

shown below:

6. If there is a shield around the telephone cable it may be

connected to “G” on the terminal block. To avoid ground

loops, we recommend connecting the shield at the computer

end only. A ground wire is not necessary for proper operation

of the Model 1040.

7. When you finish connecting the wires to the terminal block, the

assembly should resemble the diagram below:

11 12

XMT RCV

G G

RCV XMT

To Shield (Optional) }One Pair

}One Pair

8. Place the 2 halves of the strain relief assembly on either side

of the telephone wire and press together very lightly. Slide the

assembly so that it is about 2 inches from the terminal posts

and press together firmly. If your cable diameter is too small or

too large for our strain relief, please contact our technical

support. We have strain relief assemblies to accommodate

most cable diameters.

9. Insert the strain relief assembly with the wire going through it

into the slot in the bottom half of the modem case and set it

into the recess in the case.

10. BEND the top half of the case as necessary to place it over the

strain relief assembly. Do not snap the case together yet.

11. Insert one captive screw through a saddle washer, then insert

the entire piece through the hole in the DB-25 end of the case.

Snap that side of the case closed. Repeat the process for the

other side. This completes cable installation.

4.2 CONNECTION TO THE RS-232 INTERFACE

Once you have connected the twisted pair wires correctly, simply

plug the Model 1040 directly into the DB-25 port of the RS-232 device.

After doing so, remember to insert and tighten the two captive

connector screws.

4.2.1 CONNECTION TO A “DTE” DEVICE

The Model 1040 is wired as a DCE, and therefore “wants” to plug

into a DTE such as a terminal, PC or host. Because the Model 1040 is

interface powered, a direct connection to the RS-232 DTE port is most

desirable. If you must use a cable to connect the Model 1040 to the

DTE port, make sure it is a straight throughcable of the shortest

possible length—we recommend 6 feet or less.

4.2.2 CONNECTION TO A “DCE” DEVICE

Since the Model 1040 is wired as a DCE, you cannot connect it

directly to another DCE such as a modem, multiplexer or printer. If you

need to connect the Model 1040 to another DCE device, you must use

a null modem cablewired according to diagram below. We recommend

a cable of the shortest possible length, preferably 6 feet or less.

13 14

Connection to Model 1040

†Connection to DCE Device

DB-25 Pin No. DB-25 Pin No.

1.....................................................1

2.....................................................3

3.....................................................2

4.....................................................8

8.....................................................4

6...................................................20

20.....................................................6

17...................................................24

24...................................................17

7.....................................................7

†Note: When connected to another DCE device, the

Model 1040 should be configured for “external clock”

(see Section 3.3).

5.0 OPERATION

Once the Model 1040 is properly configured and installed, it should

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

Operating power is derived from the data and control signals; there is

no “ON/OFF” switch. Section 5.0 describes reading the LED status

monitors, powering-up and using the built-in V.52 and V.54 test modes.

5.1 FRONT PANEL aSWITCHES

During normal operation, both front panel switches should be in the

“normal” center position. To operate a test mode, see Section 5.3.

5.2 LED STATUS MONITORS

The Model 1040 features 2 front panel LEDs that indicate the

condition of the V.52 and V.54 test modes. Figure 6 shows the location

of each LED. Section 5.3 describes each LED’s function in more detail.

5.3 V.54 TEST MODES

The Model 1040 offers two V.54 test modes to evaluate the

condition of the modems and the communication link. These tests can

be activated physically from the front panel, or via the RS-232 interface.

Note: V.54 test modes on the Model 1040 are available for point-to-

point and 4-wire applications only.

15 16

Figure 6.Model 1040’s LEDindicators and test switches

511/E RDL

NORMAL

511 LAL

BERT LOOP

Gaithersburg, Maryland

S/N 123456

MODEL 1040

Miniature Async./Sync. Modem

5.3.1 Local Analog Loopback (LAL)

The Local Analog Loopback (LAL) test checks the operation of the

local Model 1040, and is performed separately on each unit. Any data

sent to the local Model 1040 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 be done in one of two ways: First, by

moving the front panel toggle switch DOWN to “LAL”. Second,

by raising pin 18 on the RS-232 interface (Note: Make sure

DIP switch SW2-8 is OFF). Once LAL is activated, the Model

1040 transmit 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 BER(bit error rate) 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 RS-232

interface cable between the terminal and the Model 1040.

5.3.2 Remote Digital Loopback (RDL)

The Remote Digital Loopback (RDL) test checks the performance

of both the local and remote Model 1040s and the communication link

between them. Any characters sent to the remote Model 1040 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

1040 and looped back. To perform an RDL test, follow these steps:

A. Activate RDL. This may be done in two ways: first, by moving

the front panel toggle switch UP to “RDL”. Second, by raising

pin 21 on the RS-232 interface (Note: Make sure SW2-8 is

OFF).

B. Perform a BER (bit error rate) test on the system.

C. If the BER test equipment indicates a fault, and the Local

Analog Loopback test was successful for both Model 1040s,

you may have a problem with the twisted pair line between the

modems. Make sure you check the twisted pair line for proper

connections and continuity.

5.3.3 Using the V.52 BER Test Independently

The V.52 BER test can be used independently of the V.54 loopback

tests. This requires two operators: one to initiate and monitor the test

at the local Model 1040, and one at the remote Model 1040. To use the

V.52 BER test by itself, both operators should simultaneously follow

these steps:

1. Locate the “511/511E” toggle switch on the front panel of the

1040 and move it DOWN. This activates the V.52 BER test

mode and transmits a “511” test pattern to the other unit. If

any errors are present, the receiving modem’s red “Error” LED

will blink sporadically. Note: For this test to function, the “511”

switch on both Model 1040s must be on.

2. If the test indicates no errors are present, move the V.52

toggle switch UP, activating the “511/E” test with periodic

errors present. If the test is working properly, the receiving

modem's red “Error” LED will light continuously. A successful

“511/E” test will confirm that the link is in place, and that the

Model 1040’s built-in “511” generator and detector are working

properly.

5.4 POWER-DOWN

Turn off the Model 1040 by simply removing it from the circuit or by

turning off the terminal that is directly connected to the Model 1040.

17 18

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