Patton electronics 1040 User Manual

USER
MANUAL

MODEL 1040

Self-Powered
Universal
Short Range Modem

SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
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

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: [phone],

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

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

through Friday.

2

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 [phone].

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 [phone].

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).

3 4

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.

5

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
Off On On On 1.8 Kbps
On Off On On 2.4 Kbps
Off Off On On 3.6 Kbps
On On Off On 4.8 Kbps
Off On Off On 7.2 Kbps
On Off Off On 9.6 Kbps
Off Off Off On 14.4 Kbps
On On On Off 19.2 Kbps
Off On On Off 28.8 Kbps
On On Off Off 38.4 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
Off On Receive recover clock
On Off External 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

Off Synchronous

6

Figure 2. Close up of configuration switches

OFF

ON

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 Off Constantly 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

Off Enabled

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

Off Constantly 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

Off On 8 bits
On On 9 bits
Off Off 10 bits
On Off 11 bits

7 8

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 Off Enabled

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-11 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

†

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

†

1 Blue.................White 6 GND

†

RCV

◊

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

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

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

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

GND

†

6 White...............Blue 1 GND

†

†

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.

9 10

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:

XMT RCV
XMT RCV
G G
RCV XMT
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-to­point 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

APPENDIX A

PATTON MODEL 1040 SPECIFICATIONS

Transmission Format: Sync. or async., full or half duplex
Transmission Line: Unconditioned twisted pair 19 - 26

AWG

Clocking: Internal, external or receive

loopback

Interfaces: EIA RS-232, CCITT V.24
Data Rates: 1.2, 1.8, 2.4, 3.6, 4.8, 7.2, 9.6,

14.4, 19.2, 28.8, 38.4 Kbps (switch
selectable)

Isolation: Minimum 1500 V RMS via

isolation transformers

Control Signals: Constantly “on” or controlled by

RTS

RTS/CTS Delay: No delay, 7mS, 53mS
Connectors: DB-25 male or female on RS-232

side; RJ-11, RJ-45 or terminal
block with strain relief on line side

Power Supply: None required; uses power from

EIA data and control signals

Surge Protection: Compliant with IEC 801.5 level 2,

1kV

Temperature Range: 0-60°C (32-140°F)

Altitude: 0-15,000 feet
Humidity: 5 to 95% noncondensing
Dimensions: 3.0” x 2.1” x .81”

(7.6 x 5.3 x 2.1 cm)

Weight: 2 oz. (56.7g)

APPENDIX B

PATTON MODEL 1040 CABLE RECOMMENDATIONS

The Patton Model 1040 operates at frequencies of 20kHz or less
and has been performance tested by Patton technicians using twisted­pair cable with the following characteristics:

Wire Gauge Capacitance Resistance

19 AWG/.9mm 83nf/mi or 15.72 pf/ft. .0163 Ohms/ft.
22 AWG/.6mm 83nf/mi or 15.72 pf/ft. .0326 Ohms/ft.
24 AWG/.5mm 83nf/mi or 15.72 pf/ft. .05165 Ohms/ft.

To gain optimum performance from the Model 1040, please keep
the following guidelines in mind:

• Alwaysuse twisted pairwire—this is not an option.

• Use twisted pair wire with a capacitance of 20pf/ft or less.

• Avoid twisted pair wire thinner than 26 AWG (i.e. avoid higher
AWGnumbers than 26)

• Use of twisted pair with a resistance greater than the above
specifications may cause a reduction in maximum distance
obtainable. Functionality should not be affected.

• Environmental factors too numerous to mention can affect the
maximum distances obtainable at a particular site. Use “maximum
distance” figures as a general guideline only.

2019

24 AWG
(0.5 mm)

26 AWG
(0.4 mm)

19 AWG

( 0.9 mm)
38,400 6.0(9.7) 4.5(7.2) 2.5(4.0)
19,200 9.0(14.5) 6.5(10.5)4.0(6.4)

9,600 10.0(16.1) 7.0(11.3)5.0(8.0)
4,800 11.0(17.7) 8.0(12.9)6.0(9.7)
1,200 12.0(19.3)10.0(16.1)6.0(9.7)

Data Rate

(bps)

Model 1040 Distance Table in Miles (km)

Wire Gauge

APPENDIX C

PATTON MODEL 1040 PIN/SIGNAL ASSIGNMENTS

APPENDIX D

PATTON MODEL 1040 BLOCK DIAGRAM

Copyright © 1998

Patton Electronics Company

All Rights Reserved

1- (FG) Frame Ground
2- (TD) Transmit Data To Model 1040
3- (RD) Receive Data From Model 1040
4- (RTS) Request to Send To Model 1040
5- (CTS) Clear to Send From Model 1040
6- (DSR) Data Set Ready From Model 1040
7- (SG) Signal Ground
8- (DCD) Data Carrier Detect From Model 1040
9- +DCV To Model 1040

To Model 1040 Data Term. Ready (DTR) - 20

DIRECTION “DCE” STANDARD SETTING DIRECTION

To Model 1040 External Clock - 24

From Model 1040 Transmitting Clock - 15

From Model 1040 Receive Clock - 17
To Model 1040 Local Analog Loopback - 18

To Model 1040 Remote Digital Loopback - 21

From Model 1040 Test Mode - 25

21 22