USER
MANUAL
MODEL 1082/F
iDSL Modem with
G.703 Interface
CERTIFIED
An ISO-9001
Certified
Company
Part# 07M1082/F
Doc# 033171UA
Revised 10/8/02
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
TABLE OF CONTENTS
1.0 Warranty Information ................................................................. 4
1.1 FCC Information ........................................................................... 4
1.2 CE Notice...................................................................................... 4
1.3 Service.......................................................................................... 5
2.0 General Information.................................................................... 6
2.1 Features........................................................................................ 6
2.2 Description.................................................................................... 6
2.3 1082 SNMP Management Solutions............................................. 7
HTTP/HTML Management ........................................................... 7
2.4 System Description....................................................................... 7
Applications and Associated Timing............................................. 8
Timing of Application 1: Network Loop Extension ................. 8
Timing of Application 2: Network Replacement ..................... 9
2.5 Timing Mode Selections ............................................................. 10
2.6 Operating MODE SELECTIONS ................................................ 11
3.0 Configuration ............................................................................ 12
3.1 Configuring the Hardware DIP Switches .................................... 12
Configuring DIP Switch S1......................................................... 13
SW1-1 Octet Function ........................................................ 14
SW1-2 Hardware/Software ................................................. 14
SW1-3 Front Panel Switch Function .................................. 14
SW1-4 SNMP Control ........................................................ 14
SW1-5 Reserved ................................................................. 14
SW1-6/7 Clock Mode .......................................................... 15
SW1-8 RDL Function ......................................................... 15
4.0 Installation................................................................................. 16
4.1 Connecting the Twisted Pair Interface........................................ 16
4.2 Connecting Power ...................................................................... 18
Universal AC Power (100–240 VAC).......................................... 18
DC Power................................................................................... 18
5.0 Operation................................................................................... 20
5.1 Power-up .................................................................................... 20
5.2 LED Status Monitors................................................................... 20
5.3 Test Modes................................................................................. 21
Local Line Loopback (LLB)......................................................... 21
Remote Digital Loopback (RDL)................................................. 22
Using the V.52 (BER) test pattern generator.............................. 23
A Model 1082 specifications ....................................................... 24
A.1 Applications ................................................................................ 24
A.2 Transmission Format ................................................................... 24
A.3 Transmission Line ....................................................................... 24
A.4 Clocking ...................................................................................... 24
A.5 DSL Distance .............................................................................. 24
2
A.6 G.703 Distance ........................................................................... 24
A.7 A.7 Connector ............................................................................. 24
A.8 Operating Modes/speed ............................................................. 24
A.9 Line Coding ................................................................................ 24
A.10 Timing Modes ............................................................................. 25
A.11 TRANSMIT LEVEL ....................................................................... 25
A.12 Load Impedance ........................................................................ 25
A.13 Input Signal Level ....................................................................... 25
A.14 Jitter Performance ....................................................................... 25
A.15 Isoloation ..................................................................................... 25
A.16 Compliance ................................................................................. 25
A.17 LED Status Indicators ................................................................. 25
A.18 Power .......................................................................................... 25
A.19 Temperature Range .................................................................... 25
A.20 Altitude ........................................................................................ 26
A.21 Humidity ...................................................................................... 26
A.22 Dimensions ................................................................................. 26
A.23 Weight ......................................................................................... 26
A.24 Line Interface .............................................................................. 26
B Model 1082 Factory Replacement Parts and Accessories ... 27
3
1.0 WARRANTY INFORMATION
Patton Electronics
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
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.
cifically 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 FCC INFORMATION
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to P art 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and,
if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
warrants all Model 1082/F components to be free
be liable for any damages incurred b y the use of this
Patton Electronics
spe-
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected
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.
4
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:
Tel:
(301) 975-1007
E-mail:
URL:
support@patton.com
www.patton.com
Note
Packages received without an RMA number will not be
accepted.
If you have questions about installing or using your Model 1082/F, contact technical support at:
able from
Friday
8 AM
to
.
+1 (301) 975-1007
5 PM EST (8:00
to
17:00 UTC-5
. Technical support is avail-
),
Monday
through
5
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
• 64 kbps synchronous data rate
• Provides 64K co-directional interface compliant with G.703 electrical
specs.
• Offers a single Tx/Rx interface with a standard RJ45 connector as
specified in TBR14.
• Point-to-point distances up to 5 miles (all data rates) on 24 AWG
twisted pair
• Up to 1 mile (1.6 km) additional distance on G.703 line.
• Remote digital loopback, local line loopback diagnostic modes
• Full duplex operation over a single twisted pair (2-wires)
• Able to work in clear channel or Octet timing modes*
• Complies with ITU/CCITT G.823 (control of jitter).
• Compatible with popular Patton Models 1092A, 1092ARC, 3092, and
3192
• SNMP manageable as the remote CPE when used with Patton’s other
SNMP-manageble products
• Universal power options, 120 V A C , 230 V AC and -48 VDC are av ailab le
• Front panel status indicators
• Small, convenient desktop unit
• CE marked
2.2 DESCRIPTION
The
Patton Model 1082/F
is a high speed, AC powered short range
modem that is able to convert data from a 64K G.703 network and transmit it at extended distances via 2 wire (single twisted pair) DSL. The
G.703 network provides a 64K co-directional three level signal using
either octet timing or clear channel mode. The 1082/F will detect and
pass either octet timing (preserving byte integrity over the modem link) or
* Octet timing mode available when used in 1082/F-to-1082/F config-
urations only.
6
clear channel timing (without byte integrity preservation) over the modem
link. The 1082/F is capable of handling either network timing or modem
timing, thereby realizing network extension or network replacement configurations. Clock jitter is attenuated according to G.823.
The Model 1082 is capable of point-to-point distances up to 5 miles using
24 AWG wire. The Model 1082 supports internal, external or receive
loopback clocking.
2.3 1082 SNMP MANAGEMENT SOLUTIONS
The Model 1082/F is SNMP manageable when connected to a rackmounted Model 1092ARC (see Figure 1). SNMP management is enab led
through a 1001MC rack management card located in the Patton Electronics
Rack System..
Model 1082
10Base-T
connection
to 1001MC
Management
Station
Figure 1.
2B1Q
connections to
remote 1082s
Model 1082
Rack-mounted
1092ARCs
Typical application
HTTP/HTML Management
The 1001MC maintains HTML pages that can be viewed through a Web
browser. You can display remote statistics and configure Model 1082
parameters simply by entering the 1001MC’s IP address into the bro wser.
2.4 SYSTEM DESCRIPTION
This section describes the features that the entire system (G.703 interface,
combined with the modems) will support.
Note
The “smoothed” clocks referred to in this section indicate that a
phase-locked VCO is used to create a jitter-free clock that is
locked to a source clock.
7
Applications and Associated Timing
There are two typical applications that result in two different timing modes
for the G.703 interface . These are described in the f ollo wing sections.
Timing of Application 1: Network Loop Extension.
the network supplies the timing for the entire system. The first G.703
recovers the timing. It has to smooth the clock before it supplies the clock
(XCLK1) and the data (TXD1) to the first modem transmitter, so it can
directly use the clock. The Rx of the second modem recovers the clock
and presents a “jittery” clock (RXCLK1) and data (RXD1) to the second
G.703’s transmitter. This transmitter has to smooth the clock before it uses
the clock to transmit.
The Rx of the second G.703 recovers the timing and clocks the data into a
FIFO. The Tx of the second modem takes its recovered clock and sends it
(TXCLK1) to the G.703 FIFO for data (TXD1). The Rx of the first modem
recovers the timing and clocks (RXCLK1) the data (RXD1) into a FIFO.
The Tx of the first G.703 uses the first G.703’s recovered clock and sends
it to the FIFO for data.
In this application,
8
The first G.703 interface is in
Recover Clock
mode. See Figure 2.
Network Timed
mode. The second is in
RX
TX
CSU
DTE
RX
TX
NETWORK
G.703 INTF-
MODEM
TIMED MODE
G.703
G.703
G.703 INTERFACE
NETWORK
TIMED MODE
Figure 2.
Network Loop Extension Configuration
TX
RX
SECOND MODEM
TX
RX
SMOOTHED
FIRST MODEM
G.703 TX
SMOOTHS
RX MODEM
CLOCK
FIFO
FIFO
FIFO
FIFO
HOST
MODEM -
RECOVERED
TIMING
RX
TX
RX
TX
HOST MODEM
INTERFACE
(EXTERNAL)
TIMING
2 or 4 Wire
Timing of Application 2: Network Replacement.
The first modem uses
an internal timing source and supplies the timing for the entire system. The
first G.703 recovers the timing and clocks the data into the FIFO . The Tx of
the first modem takes its internal clock and sends it (TXCLK1) to the
G.703 FIFO for data (TXD1). The Rx of the second modem recovers the
clock and presents a “jittery” cloc k and data to the second G.703’s transmitter. It has to smooth the clock before it uses the clock to tr ansmit.
The Rx of the second G.703 recovers the timing and clocks the data into a
FIFO. The Tx of the second modem sends the second modem’ s reco vered
clock (TXCLK1) to the G.703 FIFO for data (TXD1). The Rx of the first
modem uses its internal clock (RXCLK1) to send data (RXD1) into the
FIFO. The Tx of the first G.703 smoothes the first modem’s recovered timing and sends it to the FIFO for data.
9
The first G.703 modem is in
in
Receive Recover
mode. See Figure 3.
Internal Clock
mode. The second modem is
CSU
DTE
RX
TX
CSU
DTE
RX
G.703
G.703 INTF-
MODEM
TIMED MODE
TX
RX
G.703 TX
SMOOTHS
RX MODEM
CLOCK
FIFO
FIFO
HOST
MODEM -
RECOVERED
TIMING
RX
TX
SECOND MODEM
G.703 TX SMOOTHS
RX MODEM CLOCK
TX
FIFO
RX
G.703
RX
TX
SMOOTHED
G.703 INTF-
MODEM
TIMED MODE
Figure 3.
Network Replacement Configuration
FIFO
FIRST MODEM
TX
MODEM -
INTERNAL
2 Wire
HOST
TIMING
2.5 TIMING MODE SELECTIONS
Based on the timing arrangements and clock sources mentioned above,
there are two timing modes in which the interface can work. These two
modes select the clock sources mentioned above and determine which
clock gets smoothed.
•
Network Timed
—This sets the interface to pass the smoothed recovered timing to the modem as XCLK1, with the Rx data as TXD1, and
also to the G.703 Tx side.
•
Internal/Receive Recovered
—This sets the interface to use the
modem’s Tx timing (recovered or internal source) to send the Rx data
(as TXD1) to the modem and to smooth the modem’ s reco v ered timing
for transmitting on the G.703 Tx side.
10
In both cases, the transmitter uses the smoothed clock.
2.6 OPERATING MODE SELECTIONS
There are two data modes in which the interface passes data and timing:
•
Octet Mode
—This mode preserves the byte integrity associated with
Octet timing. The Octet timing frame is embedded in the data.
Note
Octet timing mode is supported only when two 1082/F modems
are connected to each other. It is not supported when the
1082/F modem is used with the 1092A or 1092ARC modems
from Patton.
•
Clear Channel Mode
—Data is passed at a 64K rate. This does not
preserve the byte integrity associated with Octet timing. Instead, an
Octet timing alarm (on or off) is passed over the modem similar to the
way signaling leads are passed.
11
3.0 CONFIGURATION
The Model 1082/F is equipped with 8 DIP switches that enable configuration of the unit for a variety of applications. This section describes
switch locations and explains the different configurations.
3.1 CONFIGURING THE HARDWARE DIP SWITCHES
Using a small flat-tip screwdriver , remov e the protectiv e co v er located on
the underside of the Model 1082 (see Figure 4).
G.703DSL
LOS
Link
NS
Remote
Status
Normal
Local
TMER
511/RDL
Normal
NetLink 64K/G.703 iDSL Modem
Test Modes
511E
Figure 4.
Removing the cover to access DIP switches S1 and S2
12
S1
1234ON5678
Switch toggle
S1
S1
5678
1234
ON
Push toggle
up for
5678
S1
1234
OFF position
Push toggle down
for ON position
Figure 5.
DIP switches
ON
Figure 5 shows the orientation of the DIP switches in the “ON” and “OFF”
positions.
Configuring DIP Switch S1
DIP switch S1 is where you configure the units f or Octet or clear channel
timing, enabling or disabling the front panel switches, SNMP control
enable or disable, Clock mode, and RDL enable or disable.
The following table summarizes default positions of DIP switches S1-1
through S1-8. Detailed descriptions of each switch follow Table 1.
Table 1:
DIP Switch Summary Table
Position Function Factory Default
S1-1 Octet or Clear Channel
ON—Clear Channel
Mode
S1-2 SNMP Hardware/Soft-
OFF—Hardware control (DEFAULT)
ware Control
S1-3 Front Panel Switch
OFF—Front Panel Switches Enabled
Function
S1-4 SNMP Control ON—Enables SNMP control of 1082
S1-5 Reserved OFF
S1-6
S1-7 ON
Clock Mode
ON—Internal Clock
S1-8 RDL Function ON—Respond to RDL
13
SW1-1 Octet Function.
be set for clear channel mode or Octet timing. The 1082/F can be used
with either another 1082/F, a 1092A/F or a 1092ARC/C/OO modem from
Patton. However, when used in Octet timing mode, the 1082/F must be
used with another 1082/F.
OFF Octet Aligned
ON Clear Channel
This switch determines whether the modem will
SW1-2 Hardware/Software.
SNMP mode (switch SW1-4) the modem must be set to determine what
will control the modem. When configured for hardware control, the
1082/F can be viewed through SNMP, but changes can only be made via
hardware. When configured for software control, changes can be made
remotely via SNMP software.
OFF Hardware Control (DEFAULT)
ON Software Control
SW1-3 Front Panel Switch Function.
disable the functionality of the front panel switches on the 1082/F.
OFF Front panel SWs enabled (DEFAULT)
ON Front panel SWs disabled
SW1-4 SNMP Control.
be controlled via SNMP when used as the remote CPE modem with a
1092ARC and a 1001MC management card.
OFF Reserved
ON SNMP control enabled
SW1-5 Reserved .
and should be set to the default position of OFF.
This switch is reserved for internal factory use only
When the Model 1082/F is placed into
This switch is used to enable or
This switch is used to allow the 1082 modem to
14
SW1-6/7 Clock Mode.
Use Switches S1-6 and S1-7 to configure the
1082 or Model 1082/144 for internal, or receive recover clock mode.
S1-6 S1-7 Description
ON ON Internal clock (DEFAULT)
ON OFF Recover clock
OFF ON Network clock
OFF OFF Hardware/software reset
Note
Placing SW1-6 and SW1-7 in the OFF mode performs reset of
the hardware/software.
SW1-8 RDL Function.
Use Switch S1-8 to allow Model 1082/F to enter
the Remote Digital Loopback diagnostic test when requested to do so by
the far end Modem. For example, when switch S1-8 is set to “ON”, it will
enter RDL mode when requested to do so by the remote Model 1082.
ON Respond to RDL (DEFAULT)
OFF Response to RDL disabled
15
4.0 INSTALLATION
Once the Model 1082 has been configured, it is ready to connect to the
twisted pair interface, to the 64K co directional interface, and to the
power source. This section tells you how to make these connections.
64 kbps co-
directional interface
ON
Power Interface
OFF|O
Line interface
Made in the USA
Line
Power input
connector
Figure 6.
Power
Model 1082/F Rear View
Interface
511E
Made in the USA
Line
4.1 CONNECTING THE TWISTED PAIR INTERFACE
The Model 1082 supports communication between two DTE devices at
distances to 5 miles (8 km) over 24 AWG (.5mm) twisted pair wire. Two
things are essential:
These units work in pairs. Both units at the end of the twisted pair DSL
span must be set for the same DTE rate (64 kbps).
To function properly, the Model 1082 needs one twisted pair of metallic
wire. This twisted pair m ust be unconditioned, dry, metallic wire, between
19 (.9mm) and 26 AWG (.4mm) (the higher number gauges will limit distance). Standard dial-up telephone circuits, or leased circuits that run
through signal equalization equipment, or standard, flat modular telephone type cable, are not acceptable.
16
The RJ-45 connector on the Model 1082’s twisted pair interface is polarity insensitive and is wired for a two-wire interface. The signal/pin relationships are shown in Figure 7.
1 (N/C)
1
2
3
4
5
6
7
8
2 (N/C)
3 (N/C)
4 (2-Wire TIP)
5 (2-Wire RING)
6 (N/C)
7 (N/C)
8 (N/C)
Figure 7.
Model 1082 twisted Pair line interface
The RJ-45 connector for connection to the 64 kbps co-directional interface is pre-wired according to the signal/pin relationships shown in
Figure 8.
1 (RX Tip)
1
2
3
4
5
6
7
8
2 (RX Ring)
3 (N/C)
4 (TX Ring)
5 (TX Tip)
6 (N/C)
7 (N/C)
8 (N/C)
Pin Signal Name Direction Function
(In reference to 1082)
1 RD(T) IN Receive data in (tip)
2 RD(R) IN Receive data in (ring)
3 Not used
4 TD(R) OUT Transmit data out (ring)
5 TD(T) OUT Transmit data out (tip)
6 Not used
7,8 Not used
Figure 8.
Model 1082 co-directional interface
17
Connection of the Patton 1082/F to a
CSU DTE
requires a
crossover twisted pair cable. Connection of the 1082/F to
a
PCM network
requires a straight through twisted pair
cable. If you need more assistance with cable selection
and preparation, contact Patton Technical Support at
Important
(301) 975-1007
http://www.patton.com
support@patton.com
. Additional assistance at our website,
, or at our e-mail address at
4.2 CONNECTING POWER
The Model 1082 (all versions) are available with Universal AC (100–
240VAC), 120VAC, 230VAC or -48VDC power options. This section
describes these options.
Universal AC Power (100–240 VAC)
The Model 1082 uses a 5VDC, 2A universal input 100-240VAC, power
supply (center pin is +5V). The universal input power supply has a male
IEC-320 power entry connector. This power supply connects to the
Model 1082 by means of a barrel jack on the rear panel. Many international power cords are available for the universal power supply (Refer to
Appendix B, “Model 1082 Factory Replacement Parts and Accessories”
on page 27 for country-specific power cords.
The Model 1082 powers up as soon as it is plugged into an AC outlet—
there is no power switch.The Universal AC supply is equipped with a
male IEC-320
DC Power
The 36–60 VDC DC to DC adapter supplied with the DC version of the
Model 1082 plugs in a DC source (nominal 48 VDC) and plugs into the
barrel power supply jack on the rear of the 1082. Refer to Figure 9 to
make the proper connection.
To Power
Supply Jack
Figure 9.
Connecting DC power to the 48V-PSM DC power supply
-Vin
+Vin
To -48VDC
Source
18
WARNING
z
There are no user-serviceable parts in the power supply
section of the Model 1082. Fuse replacement should only
be performed by qualified service personnel. Contact
Patton Electronics Technical support at +1 (301) 975-1007,
via our web site at www.patton.com, or by E-mail at
support@patton.com, for more information.
19
5.0 OPERATION
Once the Model 1082 is properly configured and installed, it should operate transparently. This sections describes power-up, reading the LED
status monitors, and using the built-in loopback test modes.
5.1 POWER-UP
To apply power to the Model 1082, first be sure that you have read “Connecting Power” on page 18, and that the unit is connected to the appropriate power source. Then power-up the unit.
5.2 LED STATUS MONITORS
The Model 1082 features six front panel LEDs that monitor power, the
DTE signals, network connection and test modes. Figure 10 shows the
front panel location of each LED. See also, LED description Table 2.
NetLink™ 64k/G.703 iDSL Modem
Link
Status Test Modes
DSL G.703 ER TM
LOS NS
Local
Normal
Remote
511E
Normal
511
DSL Link
DSL LOS
G.703
NS
Figure 10.
Table 2:
(Active Green) Solid green (On) indicates that the end
TMERLoopback
switches
Model 1082 front panel
LED descriptions
to end DSL Framer Link is up, signifying that the link
across the DSL span is active. The DSL Link LED is Off
when the link is down.
G.703
Active green (ON) indicates valid G.703 data is
present.
LOS
Active red (ON) indicates no valid G.703 data is
present.
NS (No Signal) glows red to indicate that the local Model
1082 is not connected with the remote Model 1082.
ER Blinks ON/OFF after a 511/511E test has received an
error. See “Using the V.52 (BER) test pattern generator” on page 23 for more information.
TM Glows yellow to indicate TM
20
5.3 TEST MODES
The Model 1082 offers two proprietary loopback test modes, plus a builtin V.52 BER test pattern generator, to evaluate the condition of the
modems and the communication link. These tests can be activated physically from the front panel, or via the interface.
Local Line Loopback (LLB)
The Local Line Loopback (LLB) test checks the operation of the local
Model 1082, and is performed separately on each unit. Any data sent to
the local Model 1082 in this test mode will be echoed (returned) back to
the user device (see Figure 11). For example, characters typed on the
keyboard of a terminal will appear on the terminal screen.
LLB initiated
Figure 11. Local Line loopback
To perform an LLB test, follow these steps:
1. Activate LLB. By moving the front panel toggle switch up to “Local”.
Once LLB is activated, the Model 1082 transmitter output is con-
nected to its own receiver. Data is also looped back to the line. The
TM
LED should be lit.
2. Verify that the data terminal equipment is operating properly and
can be used for a test.
3. Perform a V.52 BER (bit error rate) test as described in “Using the
V.52 (BER) test pattern generator” on page 23. If the BER test
equipment indicates no faults, but the data terminal indicates a fault,
follow the manuf acturer’s checkout procedures f or the data terminal.
Also, check the interface cable between the terminal and the Model
1082.
21
Remote Digital Loopback (RDL)
The Remote Digital Loopback (RDL) test checks the performance of both
the local and remote Model 1082s, and the communication link between
them. Any characters sent to the remote Model 1082 in this test mode
will be returned back to the originating device (see Figure 12). 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
1082 and looped back.
Remote 1082Local 1082
RDL initiated
Figure 12. Remote Digital Loopback
Do not
send a 511 test pattern from the test equipment
when you connect external test equipment to the 1082.
Important
To perform an RDL test, follow these steps:
1. Activate RDL by moving the front panel toggle switch down to
Remote.
Note Remote loopback cannot be activated until approximately 45
seconds after the two modems have linked to each other.
2. Perform a V.52 BER test as described in “Using the V.52 (BER) test
pattern generator” on page 23. If the BER test equipment indicates
a fault, and the Local Line Loopback test was successful for both
Model 1082s, you may have a problem with the twisted pair line
between the modems. You should then chec k the twisted pair line f or
proper connections and continuity.
22
Using the V.52 (BER) test pattern generator
To use the V.52 BER tests in conjunction with the Remote Digital Loopback tests (or with Local Line Loopback tests), do the following:
1. Locate the 511/511E toggle switch on the front panel of the Model
1082 and set the toggle to the down position. This activates the V.52
BER test mode and transmits a 511 test pattern into the loop. If any
errors are present, the local modem’s red ER LED will blink continuously.
2. If the above test indicates that no errors are present, move the V.52
toggle switch to the up position, activating the 511/E test with errors
present. If the test is working properly, the local modem’s red ER
LED will blink. A successful 511/E test will confirm that the link is in
place, and that the Model 1082’s b uilt-in 511 gener ator and detector
are working properly.
23
APPENDIX A
MODEL 1082 SPECIFICATIONS
A.1 APPLICATIONS
64K G.703 co directional PCM network extension or network replacement
A.2 TRANSMISSION FORMAT
Synchronous
A.3 TRANSMISSION LINE
Single unconditioned twisted pair
A.4 CLOCKING
Internal, external or receive loopback
A.5 DSL DISTANCE
• 10.1 miles (16.4km) on 19 AWG (0.9mm) wire
• 7.2 miles (11.5 km) on 22 AWG (0.64mm) wire
• 5.0 miles (8 km) on 24 AWG (0.5mm) wire
• 3.4 miles (5.5 km) on 26 AWG (0.4mm) wire
A.6 G.703 DISTANCE
1 mile (1.6 km) on a standard G.703 line
A.7 A.7 CONNECTOR
Symmetrically balanced pair, 4 wire RJ-45 female
A.8 OPERATING MODES/SPEED
• Supports clear channel mode or octet mode (when used with another
1082/F modem)
• Co-directional timing, Rx recovered: 64Kbits + 500ppm
• Octet Timing auto detect on receiver
A.9 LINE CODING
AMI with block violation for octet timing
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A.10 TIMING MODES
Supports network timing mode or modem timing mode
A.11 TRANSMIT LEVEL
2.0V differential, into 100 Ohms, nominal
A.12 LOAD IMPEDANCE
120 Ohms
A.13 INPUT SIGNAL LEVEL
0 to -10dB
A.14 JITTER PERFORMANCE
CTR 14, G.823. <0.05UI jitter for network extension applications
A.15 ISOLOATION
2000 VRMS isolation, transformer coupled
A.16 COMPLIANCE
• FCC Class A
• EN 50081-1, Emissions
• EN 50082-1, Susceptibility
• Designed for compliance with CTR 14
A.17 LED STATUS INDICATORS
G.703, LOS, DSL Link, NS (no signal), ER (error) and TM (test mode)
A.18 POWER
• 100–253 VAC, 50–60 Hz (universal input option); 48 VDC (option).
• 5 watts.
A.19 TEMPERATURE RANGE
32–122°F (0–50°C)
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A.20 ALTITUDE
0–15,000 feet (0–4,572 meters)
A.21 HUMIDITY
5 to 95%, non-condensing
A.22 DIMENSIONS
4.125W x 1.625H x 6.0D in. (10.5W x 4.1W x 15.2D cm)
A.23 WEIGHT
2.01 lbs. (1.0kg)
A.24 LINE INTERFACE
Transformer coupled 1500 VAC isolation
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APPENDIX B
MODEL 1082 FACTORY REPLACEMENT PARTS AND ACCESSORIES
Model # Description
48V-PSM DC Power Supply Module
08055DCUI 100-240VAC (+5V ±5% reg. DC/2A) Universal Input Adapter
0805EUR European Power Cord CEE 7 (“A”)
0805UK United Kingdom Power Cord (“D”)
0805US American Power Cord (“K”)
0805AUS Australia/New Zealand Power Cord (“C”)
0805DEN Denmark Power Cord (“E”)
0805FR France/Belgium Power Cord (“F”)
0805IN India Power Cord (“G”)
0805IS Israel Power Cord (“H”)
0805JAP Japan Power Cord (“J”)
0805SW Switzerland Power Cord (“L”)
07M1082F User Manual
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Notes
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Copyright © 2002
Patton Electronics Company
All Rights Reserved
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