Patton electronics 1045RC User Manual

USER
MANUAL

MODEL 1045RC

Powered High Speed
Short Range Modem:
Rack Mount Card

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

Part # 07M1045RC-B
Doc# 054051UB
Revised 3/14/97

CERTIFIED

An ISO-9001

Certified Company

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1045RC 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 1045RC 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 1045RC 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
1045RC does cause interference to radio or television reception, which
can be determined by turning the power off or removing the card, 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). In the event the user
detects intermittent or continuous product malfunction due to nearby
high power transmitting radio frequency equipment, the user is strongly
advised to take the following steps: use only data cables with an
external outer shield bonded to a metal or metalized connector; and,
configure the rear card as shown in section 3.2.1 of this manual.

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

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 Support at: [phone]; http://www.patton.com; or,
[e-mail].

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 1045RC. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

2

2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected by Patton’s qualified
technicians. 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

• Field-selectable electrical interfaces, RS-232 and

V.35

• Synchronous or asynchronous operation

• Data rates of 32, 56 and 64 Kbps

• Distances to 6 miles

• Point-to-point or multipoint

• 2-wire or 4-wire operation

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

• Seven easy-to-read LED indicators

• Transformer isolation

• Silicon Avalanche Diode surge protection

• Switchable 120V or 240V power supply

• Mounts in Patton’s 16-card rack chassis

• Made in the U.S.A.

2.2 DESCRIPTION

The Model 1045RC high speed SRM supports sync. and async.

data rates of 32, 56 and 64 Kbps, and distances to 6 miles. Sync.
transmit clock options are internal, external and receive loopback clock.

The Model 1045RC incorporates two V.54 test modes: local analog
loop and remote digital loop. These can be activated from the front
panel, or via the RS-232 or V.35 interface. Additionally, a built-in V.52
BER test generator can output 511 and 511E bit patterns. Seven easy­to-read LED indicators monitor power, transmit data, receive data, RTS,
carrier detect, test mode and test pattern. For protection against
ground loops and transient surges, the Model 1045 incorporates both
isolation transformers and Silicon Avalanche Diode surge suppressors.

The Model 1045RC is designed to mount in Patton’s 2U high 19”
rack chassis. This 16-card chassis has a switchable 120/240 VAC
power supply (optional 48 VDC) and mounts cards in a mid-plane
architecture: The front card can be plugged into different rear cards.
This means that the Model 1045RC card can have several interface
options and can be switched with other Patton short haul cards.

3

3.0 CONFIGURATION

This section describes the location and orientation of the Model
1045RC’s configuration switches and jumpers, and provides detailed
instructions for all possible settings.

The Model 1045RC 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
1045RC incorporates both front and rear cards. Configuration of both
may be necessary. The switches/jumpers are accessible when the
cards are slid out of the rack chassis. Once configured, the Model
1045RC is designed to operate transparently, without need for frequent
re-configuration: just set it and forget it!

3.1 FRONT CARD CONFIGURATION

The Model 1045RC front card has two sets of eight switches (S1 &
S2), one jumper (JP3), and a reversible daughter board, which are all
mounted on the PC board (Figure 1, below). These configuration
devices allow you to select data rates, clocking methods, V.52 & V.54
tests, word lengths, extended signaling rates, async. or sync. mode,
2- or 4-wire operation, and RS-232 or V.35 terminal interface. The
ON/OFF orientation of the DIP switches is shown in figure 2 (above).

4

12345678

ON

OFF

ON

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

Figure 1. Model 1045RC board, showing location of switches/jumper

S1

S2

JP3

daughter
board

3.1.1 CONFIGURATION SWITCH SET “S1”

The eight DIP switches on pack S1 set data rate, clock source,
async/sync mode and carrier control method. Factory default settings
are summarized in Figure in the table below. Descriptions of all
possible S1 switch settings, including the Patton factory default
settings, are found on on pages 4 and 5.

S1-1 through S1-4: Data Rate Setting

Switches S1-1 through S1-4 are set in combination to determine
the asynchronous and synchronous data rate for the Model 1045RC.

Model 1045RC:

S1-1

S1-2 S1-3 S1-4 Setting
Off Off On Off 32.0 kbps
Off On Off Off 56.0 kbps
On Off Off Off 64.0 kbps

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 1045RC.

S1-5

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

S1-7: Carrier Control Method

5

The setting for switch S1-7 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.

S1-7

Setting
Off Constantly on
On Controlled by RTS

S1-8: V.52 and V.54 Diagnostic Test

To reset the V.54 circuit, set switch S1-8 to the “ON”position, then

back to the “OFF” position.

S1-8 Setting

Off Enable (Normal Operation)
On Test Disabled

3.1.2 CONFIGURATION SWITCH SET “S2”

The eight DIP switches on pack S2 set RTS/CTS delay, word
length, extended signaling rate, async/sync mode and remote test
initiation. Factory default settings are summarized in the table below.
Descriptions of all possible S1 switch settings, including the Patton
factory default settings, are found on on pages 6 and 7.

6

S1 SUMMARY TABLE

Position Function Factory Default

S1-1 Data Rate Off
S1-2 Data Rate On
S1-3 Data Rate Off
S1-4 Data Rate Off
S1-5 Clock Source On
S1-6 Clock Source On
S1-7 Carrier Control Off Constantly On
S1-8 V.52/V.54 Tests Off Enable

56 Kbps

Internal

}

}

S2 SUMMARY TABLE

Position Function Factory Default

S2-1 RTS/CTS Delay On
S2-2 RTS/CTS Delay On
S2-3 Word Length Off
S2-4 Word Length Off
S2-5 Extended Signaling Off -2.5% to +1%
S2-6 Async/Sync Off Sync
S2-7 DTE Control of LAL On Enable
S2-8 DTE Control of RDL On Enable

10 bits

}

7 ms

}

S2-1 and S2-2: RTS/CTS Delay

The combined settings for switches S2-1 and S2-2 determine the
amount of delay between the time the Model 1045RC “sees” RTS and
when it sends CTS. Options are no delay, 7 ms and 53 ms.

S2-1 S2-2 Setting

On On 7 ms
On Off 53 ms
Off On No delay
Off Off No delay

S2-3 and S2-4: Word Length

Switches S2-3 and S2-4 are set in combination to determine the
word length for asynchronous data.

S2-3

S2-4 Setting
Off On 8 bits
On On 9 bits
Off Off 10 bits
On Off 11 bits

S2-5: Extended Signaling Rate

The setting for switch S2-5 determines the range of variability the
Model 1045RC “looks for” in asynchronous data rates (i.e., the actual
variance from a given frequency level the Model 1045RC will tolerate).

S2-5

Setting
Off -2.5% to +1% (normal)
On -2.5% to +2.3% (extended)

S2-6: Asynchronous/Synchronous Mode

The setting for switch S2-6 determines whether the Model 1045RC

is in asynchronous or synchronous operating mode.

S2-6 Setting

On Asynchronous*
Off Synchronous

*Note: in asynchronous mode, the Clock Source must be set to
“Internal” (S1-5 = On, S1-6 = On)

7

S2-7: RS-232/V.35 Initiation of Local Analog Loopback Test

The setting for switch S2-7 determines whether or not the Model
1045RC’s local analog loopback test can be initiated by raising pin 18
on the RS-232 interface (pin N on the V.35 interface).

S2-7

Setting
On RS-232/V.35 initiation enabled
Off RS-232/V.35 initiation disabled

S2-8: RS-232/V.35 Initiation of Remote Digital Loopback Test

The setting for switch S2-8 determines whether or not the Model

1045RC’s remote digital loopback test can be initiated by raising pin 21
on the RS-232 interface (pin L on the V.35 interface).

S2-8 Setting
On RS-232/V.35 initiation enabled
Off RS-232/V.35 initiation disabled

3.1.3 CONFIGURATION JUMPER “JP3”

Jumper JP3 is used to set 2-wire or 4-wire operation. Figure 3

(below) shows the possible positions of the strap on its pegs. Please
note the orientation of the jumper on the PC board.

(continued)

8

Figure 5 Orientation of jumper JP3

Front of PC Board Rear of PC Board

123 123 123

JP3: 2-Wire/4-Wire Mode Selection

The setting for jumper JP3 determines whether the Model 1045RC

is operating in 2-wire or 4-wire mode. Be careful not to lose the jumper!

JP3

Setting
Jumper on pins 1 & 2 2-wire (half duplex only)*
Jumper on pins 2 & 3 4-wire (full or half duplex)
Jumper removed Not a valid setting

*Note: in 2-wire mode, the Carrier Control Method switch must be set to
“RTS Control” (S1-7 = On)

3.1.4 REVERSIBLE “DAUGHTER BOARD”

The Model 1045RC supports both RS-232 and V.35 electrical

interfaces for the terminal connection port. Which electrical interface is
active is determined by the orientation of the small reversible daughter
board on the front card (see Figure 4, below). The daughter board is
clearly marked “This side up for RS-232” and “This side up for

V.35”. Note: When plugging the daughter board into the socket, the
arrow should always point toward the front of the PC board.

9

3.2 REAR CARD CONFIGURATION

The Model 1045RC has four rear interface card options: DB-25 &
RJ-11, DB-25 & RJ-45, M/34 & RJ-11 and M/34 & RJ-45 (see Figure 5,
below). Each of these options supports one terminal connection and
one line connection.

Each of the four rear card options for the Model 1045RC has a
distinct model number. The four options and their model numbers are
shown below:

Interface Combination

Model Number

DB-25 & RJ-11 1000RCM12511
DB-25 & RJ-45 1000RCM12545
M/34 & RJ-11 1000RCM13411
M/34 & RJ-45 1000RCM13445

Prior to installation, you will need to examine the rear card you
have selected and make sure it is properly configured for your
application. Each rear card is configured by setting straps located on
the PC board. Section 3.5.1 describes the strap locations and possible
settings for each rear card.

10

FRONT THIS SIDE UP FOR RS-232

Figure 4. Terminal interface selection “daughter board”

RJ-11 (6-wire)

RJ-45 (8-wire)

Figure 5. Model 1045RC interface card options

DB-25 F

DB-25 F

RJ-11 (6-wire)

RJ-45 (8-wire)

M/34 F

M/34 F

Line Shield & FRGND (JB2)

This jumper affects the line interface. In the connected (closed)
position, it links RJ-11 pins 1 & 6, or RJ-45 pins 2 & 7 to frame ground.
These pins can be used as connections for the twisted pair cable
shield. In the open (disconnected) position, pins 1 & 6 (or 2 & 7)
remain connected to each other, but are “lifted” from the frame ground.

JB2
Position 1&2 = Line Shield and FRGND Connected
Position 2&3 = Line Shield and FRGND Not Connected

DTE Shield & Frame Ground (JB3)

In the connected position, this jumper links DB-25 pin 1 (M/34 pin
A) & frame ground. In the open position, pin 1(pin A) is “lifted” from
frame ground.

JB3

Position 1&2 = DTE Shield (DB-25 Pin 1 or M/34 Pin A)

and FRGND Connected

Position 2&3 = DTE Shield (DB-25 Pin 1 or M/34 Pin A)

and FRGND Not Connected

Signal Ground & Frame Ground (JB4)

In the connected position, this jumper links DB-25 pin 7 or M/34 pin
B (Signal Ground) and frame ground. In the open position, pin 1 (or pin
B) is “lifted” from frame ground.

JB4

Position 1&2 = SGND (DB-25 pin 7 or M/34 pin B)

and FRGND Connected

Position 2&3 = SGND (DB-25 pin 7 or M/34 pin B)

and FRGND Not Connected

12

3.2.1 REAR CARD JUMPER SETTINGS

Figure 6 (below) shows jumper locations for the four rear card
options. These jumpers determine various grounding characteristics for
the RS-232/V.35 and twisted pair lines.

Figure 7 (below) shows the orientation of the rear interface card

jumpers. The jumper can either be on pegs 1 & 2, or on pegs 2 & 3.

The table below provides an overview of interface jumper functions
for the rear interface cards. Following this overview is a detailed
description of each jumper’s function.

11

Figure 6. Rear card jumper locations

JB2

(peg 1 on left)

JB3

(peg 1 on top)

JB4

(peg 1 on left)

123 123 123

Figure 7. Orientation of interface card straps

REAR CARD STRAP SUMMARY

Strap Function Position 1&2 Position 2&3

JB2 Line Shield & FRGND Connected Open*
JB3 DTE Shield (Pin1) & FRGND Connected Open*
JB4 FRGND & SGND Connected Open*

4.0 INSTALLATION

This section describes the functions of the Model 1000R16 rack
chassis, tells how to install front and rear Model 1045RC cards into the
chassis, and provides diagrams for wiring the interface connections
correctly.

4.1 THE MODEL 1000R16 RACK CHASSIS

The Model 1000R16 Rack Chassis (Figure 8) has sixteen short
range modem card slots, plus its own power supply. Measuring only

3.5” high, the Model 1000R16 is designed to occupy only 2U in a 19”
rack. Sturdy front handles allow the Model 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.

Switching the Power Supply On and Off

The power supply on/off switch is located on the front panel. When
plugged in and switched on, a red front panel LED will glow. Since the
Model 1000R16 is a “hot swappable” rack,

it is not necessary for any

cards to be installed before switching on the power supply

. The power
supply may be switched off at any time without harming the installed
cards.

4.2 INSTALLING THE MODEL 1045RC INTO THE CHASSIS

The Model 1045RC is comprised of a front card and a rear card.
The two cards meet inside the rack chassis and plug into each other by
way of mating 50 pin card edge connectors. Use the following steps as
a guideline for installing each Model 1045RC into the rack chassis:

1. Slide the rear card into the back of the chassis along the metal
rails provided.

2. Secure the rear card using the metal screws provided.

3. Slide the card into the front of the chassis. It should meet the
rear card when it’s almost all the way into the chassis.

4. Push the front card

gently

into the card-edge receptacle of the

rear card. It should “click” into place.

5. Secure the front card using the thumb screws.

NOTE: Since the Model 1000R16 chassis allows “hot swapping”
of cards, it is

not necessary to power down

the rack when you

install or remove a Model 1045RC.

4.3 WIRING THE MODEL 1045RC

Each of the rear interface cards compatible with the Model 1045RC
has one terminal interface port (DB-25 or M/34) and one 4-wire, twisted
pair port (RJ-11 or RJ-45). This section describes connection
procedures for the terminal cable and twisted pair cable.

1413

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

supply section of the Model 1000RC. Voltage setting changes
and fuse replacement should only be performed by qualified
service personnel. Contact Patton Electronics Technical support
at [phone] for more information.

Figure 8. Model 1000R16 Rack Chassis with power supply

4.3.1 TERMINAL INTERFACE CONNECTION

The Model 1045RC is wired as a DCE, and allows for three possible

terminal interface connections:

• RS-232C/V.24 (electrical) + DB-25 female (physical)

• V.35/RS-530 (electrical) + DB-25 female (physical)

• V.35 (electrical) + M/34 female (physical)

To select the appropriate

electrical

interface, please refer to
Section 3.1.4 of this manual. To select or construct a cable with the
appropriate

physical

interface pin-outs, please refer to the diagrams in

Appendix D and Appendix E of this manual.

4.3.2 TWISTED PAIR CONNECTION

The Model 1045RC supports communications between RS-232 or
V.35 devices at distances to 6 miles and data rates up to 64 Kbps. The
Model 1045RC is designed to operate in a closed data circuit with other
1045RCs or 1045 plug-in units.

To function properly, the Model 1045RC needs two twisted pairs of
unconditioned, dry metallic wire between 19 and 26 AWG (higher
number gauges may limit distance somewhat). Both shielded and
unshielded wire yield favorable results. Flat modular telephone type
cable, dial-up analog circuits or leased lines that run through
signal/equalization equipment are NOT acceptable. For further
information about acceptable wire grades, please refer to the diagram
in appendix B.

Point-to-Point Twisted Pair Connection

The 6-position RJ-11 and 8-position RJ-45 jack options for the
Model 1045RC are prewired for a standard TELCO wiring environment.
Connection of a 2-wire or 4-wire twisted pair circuit between two or
more Model 1045RCs requires a

crossover cable

as shown in the

following diagrams.

15

RJ-11/4-Wire

SIGNAL PIN# PIN# SIGNAL

GND†1 6.......................GND

RCV-

◊

2 4.......................XMT-

XMT+ 3 5.......................RCV+

XMT- 4 2 .......................RCV-

RCV+ 5 3.......................XMT+

GND 6 1.......................GND

RJ-45/4-W

ire

SIGNAL PIN# COLOR COLOR PIN# SIGNAL

GND†2 7.......................GND

RCV-

◊

3 5.......................XMT-

XMT+ 4 6.......................RCV+ XMT- 5 3

RCV-

RCV+ 6 4.......................XMT+

GND 7 2.......................GND

†

Connection to ground is optional

‡

Standard color codes—yours may be different

◊

The Model 1045RC is not sensitive to polarity

AT&T standard modular color codes

16

1 - Blue
2 - Orange
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Slate

1 - Blue
2 - Yellow
3 - Green
4 - Red
5 - Black
6 - White

Notice! Any modular twisted pair cable connected to the

Model 1045RC must be shielded cable, and the outer shield
must be properly terminated to a shielded modular plug on both
ends of the cable.

Notice! Any terminal cable connected to the Patton Model

1045RC 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 1045RC and connected the
cables, you are ready to operate the units. Section 5.0 describes the
power-up procedure and the built-in V.54 and V.52 test modes.

5.1 POWER-UP

There is no power switch on the Model 1045RC: Power is
automatically applied to the Model 1045RC when its card-edge
connector makes contact with the chassis’ mid-plane socket, or when
the chassis’ power supply is turned on.

Note: The Model 1045RC is a
“hot swappable” card—it will not be damaged by plugging it in or
removing it while the rack is powered up.

5.2 TEST MODES

The Model 1045RC offers two V.54 test modes and two V.52 test
modes to evaluate the condition of the modems and the communication
link. Both sets of tests can be activated physically from the front panel.
The V.54 test can also be activated from the RS-232 interface.

5.2.1 LOCAL ANALOG LOOPBACK (LAL)

The Local Analog Loopback (LAL) test checks the operation of the
local Model 1045RC, and is

performed separately on each unit.

Any
data sent to the local Model 1045RC 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:

1. Activate LAL. This may be done in one of two ways: First, by
moving the upper front panel toggle switch RIGHT to “Analog”.
Second, by raising pin 18 on the RS-232 interface (note: be
sure DIP switch SW1-8 is enabled). Once LAL is activated,
the Model 1045RC transmit output is connected to its own
receiver. The “Test” LED should be lit.

2. Verify that the data terminal equipment 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 Model 1045RC and move it to the right. This will
activate the V.52 BER test mode and inject a “511” test pattern
into the local loop. If any errors are present in the loop, the
red “Error” LED will blink sporadically.

17

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 glow. A successful “511/E” test will confirm that the
loop is in place, and that the Model 1045RC’s built-in “511”
generator and detector are working properly.

5. If the BER test indicates that errors

are

present, check to see
that the RS-232 cable connecting the DTE to the Model
1045RC is wired straight through, and is plugged in properly.
Also, ensure that the Model 1045RC is configured properly.
Then re-check your DTE equipment. If you still have errors,
call Patton Technical Support at [phone].

5.2.2 REMOTE DIGITAL LOOPBACK (RDL)

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

both the local and remote Model 1045RCs,

and

the communication link
between them. Any characters sent to the remote 1045RC 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

1045RC 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.

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 1045RC 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 glow. A successful “511/E” test will confirm that the
loop is in place, and that the Model 1045RC’s built-in “511”
generator and detector are working properly.

18

5. If the remote BER test indicates that errors

are

present, and
the local analog loopback/BER tests showed that both Model
1045RCs 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].

5.2.3 USING THE V.52 BER TEST INDEPENDENTLY

The Model 1045RC's V.52 BER test can be used independent of the
V.54 loopback tests. This requires two operators: one to initiate and
monitor the test at both the local and the remote Model 1045RC. To
use the V.52 BER test by itself, both operators should simultaneously
follow these steps:

1. Locate the lower of the two toggle switches on the front panel
of the Model 1045RC and move it to the right. This will
activate the V.52 BER test mode and transmit 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 independent test to function, the “511” switch on

both

Model 1045RCs must be turned on.

2. If the test indicates no errors are present, move the V.52
toggle switch to the left, thus activating the “511/E” test with
errors present. If the test is working properly, the receiving
modem’s red “Error” LED will glow. A successful “511/E” test
will confirm that the link is in place, and that the Model
1045RC’s built-in “511” generator and detector are working
properly.

19

APPENDIX A

1045RC SPECIFICATIONS

Transmission Format: Synchronous or asynchronous,

2-wire or 4-wire

Internal Interface: Connection to Model 1000R16 rack

chassis via 50 pin male card edge

External Interface: DB-25 female (RS-232), M/34 female (V.35)

RJ-11 or RJ-45 (line)

Transmission Line: 2-wire or 4-wire unshielded twisted pair

(UTP), 19-24 AWG

Data Rates: 32, 56, 64 Kbps
Clocking: Internal, external or receive recover
RTS/CTS Delay: No delay, 7mS, 53mS
Controls: Carrier constantly “ON” or “controlled by

RTS”

Indicators: Bi-color LED indicators for TD, RD, RTS &

DCD; single LED indicators for Power, Test
and Error

Diagnostics: V.52 compliant bit error rate pattern; V.54

compliant— Local Analog Loopback and
Remote Digital Loopback, activated by front
panel switch or via terminal interface

Transformer Isolation: 1500 V RMS
Surge Protection: Silicon Avalanche Diodes
Temperature: 0-50°C / 32-122°F
Humidity: 4-95%, noncondensing
Dimensions: 0.95”w x 3.1”h x 5.4”l

20

APPENDIX B

MODEL 1045RC CABLE RECOMMENDATIONS

The Patton Model 1045RC operates at frequencies of 64KHz or less
and has been performance tested by Patton technicians using twisted­pair cable with the following characteristics:

Wire Gauge Capacitance Resistance

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

To gain optimum performance from the Model 1045RC, please keep
the following guidelines in mind:

•

Always

use twisted pair wire—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

AWG numbers 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 the above

data rate/distance table as a

general guideline only.

21

APPENDIX C

MODEL 1045RC FACTORY REPLACEMENT PARTS

The Patton Model 1045RC rack system features interchangeable
rear cards, power cords/fuses for international various operating
environments and other user-replaceable parts. Model numbers,
descriptions and prices for these parts are listed below:

Patton Model # Description

1000RPEM..........................120/240V Rear Power Entry Module

1000RPSM-2.......................120/240V Front Power Supply Module

1000RPEM-DC ...................DC Rear Power Entry Module

1000RPSM-48A..................48V Front Power Supply Module

1000RPEM-V......................120/240V CE Compliant Rear Power

Entry Module

1000RPSM-V......................120/240V CE Compliant Front Power

Supply Module

0805US...............................American Power Cord

0805EUR.............................European Power Cord CEE 7

0805UK...............................United Kingdom Power Cord

0805AUS.............................Australia/New Zealand Power Cord

0805DEN.............................Denmark Power Cord

0805FR ...............................France/Belgium Power Cord

0805IN.................................India Power Cord

0805IS.................................Israel Power Cord

0805JAP..............................Japan Power Cord

0805SW ..............................Switzerland Power Cord

0516FPB1...........................Single Width Blank Front Panel

0516FPB4...........................4-Wide Blank Front Panel

0516RPB1...........................Single Width Blank Rear Panel

0516RPB4...........................4-Wide Blank Rear Panel

056S1..................................Set of 16 #4 pan head screws/washers

22

APPENDIX D

V.35 INTERFACE STANDARDS (DCE)

23

B

F
L
R
V
Z

DD

NN

A
E
K

U
Y

CC

HH
MM

D
J
N
T

X
BB
FF

LL

H

M

S

W

AA
EE

KK

A

JJ

P

Frame Ground -A

Request to Send -C

Data Set Ready -E

Data Terminal Ready -H

(Not Used) -K

(Not Used) -M
Transmitted Data (A) -P
Transmitted Data (B) -S

External Clock (A) -U

External Clock (B) -W

Transmit Clock (A) -Y

Transmit Clock (B) -AA

B- Signal Ground
D- Clear To Send
F- Data Carrier Detect
L- Remote Digital Loop

N- Local Analog Loop
R- Receive Data (A)
T- Receive Data (B)
V- Receive Clock (A)
X- Receive Clock (B)

CCITT V.35 Interface (M/34 Female)

1 - (FG) Frame Ground Common
2 - Transmit Data A To 1045RC
3 - Receive Data A From 1045RC
4 - (RTS) Request to Send To 1045RC
5 - (CTS) Clear to Send From 1045RC
6 - (DSR) Data Set Ready From 1045RC
7 - (SG) Signal Ground Common
8 - (CD) Carrier Detect From 1045RC
9 - Receive Clock B From 1045RC

11 - External Clock B To 1045RC
12 - Transmit Clock B From 1045RC

To 1045RC Data Term. Ready (DTR) - 20

DIRECTION CCITT V.35/EIA-530 INTERFACE (DB-25) DIRECTION

To 1045RC External Clock A - 24

From 1045RC Transmit Clock A - 15

From 1045RC Receive Clock A - 17
To 1045RC Local Analog Loop (LAL) - 18

To 1045RC

Remote Digital Loop

(RDL) - 21

To 1045RC Transmit Data B - 14

From 1045 Receive Data B - 16

APPENDIX E

RS-232 INTERFACE STANDARDS (DCE)

Copyright ©

Patton Electronics Company

All Rights Reserved

24

1- (FG) Frame Ground
2- (TD) Transmit Data To 1045RC
3- (RD) Receive Data From 1045RC
4- (RTS) Request to Send To 1045RC
5- (CTS) Clear to Send From 1045RC
6- (DSR) Data Set Ready From 1045RC
7- (SG) Signal Ground
8- (DCD) Data Carrier Detect From 1045RC

From 1045RC Transmit Clock - 15

From 1045RC Receive Clock - 17
To 1045RC Analog Loop - 18

To 1045RC Data Term. Ready (DTR) - 20
To 1045RC Digital Loop - 21

To 1045RC External Clock - 24

DIRECTION RS-232C/V.24 INTERFACE (DB-25) DIRECTION