Patton electronic Network Card 1082 User Manual

USER  
MANUAL  
MODEL 1082 and  
1082/144  
iDSL Modem with  
V.34 or X.21 Interface  
Part# 07M1082/C-B  
Doc# 033151UB  
Revised 2/19/03  
SALES OFFICE  
(301) 975-1000  
TECHNICAL SUPPORT  
(301) 975-1007  
C
E
R
T
I
F
I
E
D
An ISO-9001  
Certified  
Company  
 
A
A.8 Connectors ................................................................................. 26  
A.10 Temperature Range .................................................................... 26  
A.14 Weight ......................................................................................... 26  
A.15 Line Interface .............................................................................. 26  
B
Model 1082C and 1082D Factory Replacement Parts and  
Accessories............................................................................... 27  
C
D
E
Model 1082C and 1082D Interface Pin Assignments............. 28  
Model 1082C and 1082D Interface Pin Assignments............. 29  
Model 1082C and 1082D Interface Pin Assignment............... 30  
3
 
1.0 WARRANTY INFORMATION  
Patton Electronics warrants all Model 1082 and Model 1082/144 com-  
ponents 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 spe-  
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 Part 15 of the FCC Rules.These limits  
are designed to provide reasonable protection against harmful interfer-  
ence 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:  
• 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 Materi-  
als Authorization number on the outside of the shipping container. This  
number may be obtained from Patton Electronics Technical Service at:  
Tel: (301) 975-1007  
Note Packages received without an RMA number will not be  
accepted.  
Patton Electronics’ technical staff is also available to answer any ques-  
tions that might arise concerning the installation or use of your  
Model 1082 or Model 1082/144. Technical Service hours: 8AM to 5PM  
EST, Monday through Friday.  
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  
• Synchronous data rates: 19.2, 32, 56, 64, 128, and 144* kbps  
• Asynchronous data rates: 0–38.4 kbps  
• Full duplex operation over a single twisted pair (2-wires)  
• Point-to-point distances up to 5 miles (all data rates) on 24 AWG  
twisted pair  
• Remote digital loopback, local line loopback diagnostic modes  
• Multi-Rate Symmetric DSL  
V.35 and X.21 Interfaces  
• Compatible with Popular Model 1092  
• SNMP Manageable with 1092ARC and 1001MC as 1001MC SNMP  
Agent Rack Card  
• Universal Power Options, 120VAC, 230VAC and -48VDC Available  
• Front Panel Status Indicators  
• Small, Convienent Desktop Unit  
• CE Marked  
2.2 DESCRIPTION  
The Patton Model 1082 is a high speed, AC powered short range  
modem that is able to operate synchronously or asynchronously—full  
duplex—over a single twisted pair. Supporting data rates to 128 kbps—  
or 144 kbps on 1082/144 models—(synchronous) or 38.4 kbps (asyn-  
chronous), 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  
in synchronous mode. Data rates and asynchronous data format may be  
configured locally using DIP switches.  
*
144 kbps available on 1082/144 models only.  
6
 
     
Model 1082/C provides a V.35 interface on an M/34 female connector.  
Model 1082/D provides an X.21 interface on a DB-15 female connector.  
Line connection is made by an RJ-45 jack. Standard versions of Model  
1082 are powered by a 100-240VAC (Universal) supply. The DC power  
supply option supports any DC input between 36–72VDC.  
2.3 1082 SNMP MANAGEMENT SOLUTIONS  
The Model 1082 and Model 1082/144 are SNMP manageable when con-  
nected to a rack-mounted Model 1092ARC (see Figure 1). SNMP manage-  
ment is enabled through a 1001MC rack management card located in the  
Patton Electronics Rack System.  
Model 1082  
2B1Q  
connections to  
remote 1082s  
10Base-T  
connection  
to 1001MC  
Management  
Station  
Model 1082  
Rack-mounted  
1092ARCs  
Figure 1. 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 browser.  
7
 
     
3.0 CONFIGURATION  
The Model 1082 and 1082/144 each are equipped with 16 DIP switches  
that enable configuration of the unit for a wide variety of applications.  
This section describes switch locations and explains the different config-  
urations  
3.1 CONFIGURING THE HARDWARE DIP SWITCHES  
Using a small flat-tip screwdriver, remove the protective cover located on  
the underside of the Model 1092 (see Figure 2).  
S L  
1 0 B T  
S t a t u s  
L i n k  
l 1 1 9 4 E S i n g l e M o d e F i b e r Q u a d G . 7 0 3 / G . 7 0 4 M o d e m  
-
S  
E R  
5 1 1 / R D L  
M  
N o r m a l  
5 1 1 E / R B L  
N e t L i n k 1 0 B a s t T i D S L M o d e m  
Figure 2. Removing the cover to access DIP switches S1 and S2  
8
 
   
S1  
S2  
S
ON  
ON  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
S 1  
S1  
5 6 7 8  
ON  
Switch toggle  
1 2 3 4  
Push toggle up  
for ON position  
ON  
ON  
Push toggle  
down for  
OFF position  
1 2 3 4 5 6 7 8  
S 1  
1 2  
Figure 3. DIP switches S2 and S2  
Figure 3 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 data rate, asynchronous or  
synchronous data format, transmit clock source, and response to RDL  
request. The following table summarizes default positions of DIP  
switches S1-1 through S1-8. Detailed descriptions of each switch follow  
the table.  
S1 Summary Table  
Position  
S1-1  
S1-2  
S1-3  
S1-4  
S1-5  
S1-6  
S1-7  
S1-8  
Function  
Data Rate  
Data Rate  
Factory Default  
On  
64K Sync  
}
Off  
DSR during Local Line Loop On  
DSR On  
Reserved  
On  
Off  
On  
On  
On  
Async/Sync Data Format  
Tx Clock Source  
Internal Clock  
Enable  
}
Tx Clock Source  
Response to RDL Request  
9
 
 
Note When setting the 1082 for SNMP Management, the DTE rate  
switches (S1-1,S1-2, and S2-1) must be also set to the ON posi-  
tion.Therefore, to set a 1082 unit SNMP Mangagement mode, the  
following switches have to be at the ON position, S1-1, S1-2, S2-1.  
Switches S1-1 and S1-2: Data Rate  
Use switches S1-1 and S1-2 to configure the asynchronous or synchro-  
nous data rate of the Model 1082 and Model 1082/144. Each setting rep-  
resents one synchronous data rate and one asynchronous data rate.  
S1-1 S1-2  
Sync Data Rate  
Async. Data Rate  
On  
Off  
On  
Off  
Off  
On  
On  
Off  
Off  
Off  
32 kbps  
56 kbps  
Reserved  
Reserved  
0–38.4 kbps  
Reserved  
64 kbps  
128 kbps (see note)  
144 kbps or 19.2 kbps (see note)  
Note The Model 1082 can also operate at the 19.2 kbps synchronous  
rate, and the Model 1092/144 can also operate at the 144 kbps  
synchronous rate. To operate at these rates, set switches S1-1  
and S1-2 both to the OFF position and Switch S2-1 to the ON  
position (see section , “Configuring DIP switch S2” on page 122  
for a description of Switch S2-1).  
If the S2-1 switch is positioned in the OFF position, the 128 kbps  
sync data rate/0–38.4 kbps async data rate option is selected.  
Switch S1-3: Data Set Ready during Line Loopback Test  
Use Switch S1-3 to control the behavior of the DSR signal at the EIA  
interface during the line loopback test.  
S1-3  
Setting  
On  
Off  
DSR is on during local line loop  
DSR is off during local line loop  
10  
 
   
Switch S1-4: Must be set to the ON position (Reserved).  
S1-4  
Setting  
On  
Reserved  
Switch S1-5: Asynchronous/Sync Operation  
Use switch S1-5 to configure the Model 1082 for async/sync operation.  
Switch S1-5 must be set in the Off position. There is no other valid set-  
ting.  
S1-5  
Setting  
Off  
Async/Sync  
Switches S1-6 and S1-7: System 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  
Clock Mode  
Description  
On  
Off  
On  
On  
Internal  
System clock generated internally  
External (DTE)  
System clock derived from termi-  
nal interface  
On  
Off  
Off  
Off  
Receive Recover  
Hardware Reset  
System clock derived from the  
received line signal  
A pair of Model 1082s communicate synchronously  
across the twisted pair line connection. Therefore, you  
must set these switches whether your application is  
async or sync. For X.21 or Async applications, configure  
one Model 1082 for internal clock mode and the other  
Model 1082 for receive recover clock mode.  
Important  
Switch S1-8: Response to RDL Request  
Use Switch S1-8 to allow Model 1082 and Model 1082/144 to enter the  
Remote Digital Loopback diagnostic test when requested to do so by the  
far end Model 1082 or Model 1082/144. For example, when switch S1-8 is  
set to “ON”, it will enter RDL mode (See section 5.3, “Test Modes” on  
11  
 
       
page 22) when requested to do so by the remote Model 1082 and Model  
1082/144.  
S1-8  
Setting  
On  
Off  
Response to RDL Request Enabled  
Response to RDL Request Disabled  
Note The Remote Digital Loopback (RDL) will not work for 144 kbps.  
You must first set the units to 128 kbps or slower to use the RDL.  
Configuring DIP switch S2  
Use the eight DIP switches in S2 to enable 19.2 kbps or 144* kbps syn-  
chronous operation and set the loopback modes. The following table  
summarizes default positions of DIP switches S2-1 through S2-8.  
Detailed descriptions of each switch follow the table.  
S2 Summary Table  
Position  
Function  
Factory Default  
S2-1  
S2-2  
S2-3  
S2-4  
S2-5  
S2-6  
S2-7  
19.2 or 144* kbps Enable  
Front Panel Switch Disable  
Response to LAL from DTE  
Not Assigned  
Off  
Off  
Off  
Off  
Off  
On  
Off  
Disabled  
Enabled  
Not Assigned  
Response to RDL from DTE  
Compatibility Mode  
S2-8  
Not Assigned  
Off  
*
144 kbps data rate is only available on the Model 1082/144.  
19.2 kbps rate is available on all Model 1082 series modems except  
for the 1082/144.  
12  
 
 
Switches S2-1: 19.2 kbps or 144* kbps Synchronous Rate Enable  
Use switch S2-1 to allow the Model 1082 and Model 1082/144 to operate  
at the 19.2 kbps synchronous data rate, or to enable the Model 1082/144  
to operate at the 144* kbps synchronous data rate.  
S2-1 Activation  
Description  
Off  
Disabled  
defined by switches S1-1 and S1-2  
On  
Enabled  
Model 1082 operates at synchronous 19.2 kbps  
data rate (see note).The Model 1082/144 operates  
at 144 kbps synchronous data rate (see note)  
Note To operate at 19.2 kbps or 144 kbps, set switches S1-1 and S1-2  
to the OFF position and switch S2-1 to ON (see section “Configur-  
ing DIP Switch S1” on page 9).  
Switch S2-2: Front Panel Switch Disable  
Use switch S2-2 to enable or disable the front panel toggle switches.  
S2-2  
On  
Off  
Disable the front panel switches  
Enable the front panel switches  
Switches S2-3: Response to Local Line Loop Requests from DTE  
Use switch S2-3 to enable Local Line Loopback from the local DTE inter-  
face (See “Local Line Loopback (LLB)” on page 22).  
S2-3 Activation  
Description  
Off  
Disabled  
Enabled  
Ignore Line Loop Back request from DTE interface  
ON  
Respond to Line Loop Back request from DTE  
interface  
Switches S2-4 and S2-5: Not Assigned  
*
144 kbps data rate is only available on the Model 1082/144.  
19.2 kbps rate is available on all Model 1082 series modems except  
for the 1082/144.  
13  
 
       
Switch S2-6: Response to RDL Request from DTE  
Use switch S2-6 to determine the Model 1082 response to RDL requests  
from the local DTE. In the enabled setting, the 1082 responds to RDL  
requests from the local DTE by sending an RDL loop request to the  
remote Model 1082 (See “Remote Digital Loopback (RDL)” on page 23).  
S2-3 Activation  
Description  
Off  
Disabled  
Ignore Remote Digital Loopback request from  
DTE interface  
On  
Enabled  
Respond to Remote Digital Loopback request  
from DTE interface  
Switch S2-7: Compatability Mode  
In some instances, you may need to connect a Model 1082 to a third  
party IDSL modem. By enabling S2-7 the 1082 will negotiate and link up  
to a non-Patton IDSL Modem. When using two Patton units, set 2-7 to  
the default position.  
S2-7  
Activation  
Setting  
Off  
On  
Disabled  
Enabled  
Default position  
Compatibility Mode  
Switch S2-8: Not Assigned  
14  
 
     
4.0 INSTALLATION  
Once the Model 1082 has been configured, it is ready to connect to the  
twisted pair interface, to the serial port, and to the power source. This  
section tells you how to make these connections.  
V.35 connector  
Line interface  
Made in the USA  
Power  
Interface  
Line  
Power input  
connector  
d G.703/G.704 Modem  
Power  
E  
Made in the USA  
Line  
Figure 4. Model 1082 or Model 1082/144 rear view  
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:  
1. These units work in pairs. Both units at the end of the twisted pair  
DSL span must be set for the same DTE rate.  
2. To function properly, the Model 1082 needs one twisted pair of  
metallic wire. This twisted pair must 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.  
15  
 
   
The RJ-45 connector on the Model 1082’s twisted pair interface is polar-  
ity insensitive and is wired for a two-wire interface. The signal/pin rela-  
tionships are shown in Figure 5.  
Figure 5. Model 1082 RJ-45 twisted pair line interface  
4.2 CONNECTING THE MODEL 1082 (V.35) SERIAL INTERFACE  
Model 1082 supports V.35 serial port connections. This section  
describes how to connect the serial ports to your V.35 equipment.  
Connecting the Model 1082 (V.35) to a DTE Device  
The Model 1082 provides a V.35 DCE (Data Circuit Terminating Equip-  
ment) interface on an M/34 female connector. As a DCE, this interface is  
designed to connect to DTE equipment, such as a router. When connect-  
ing the V.35 interface of the Model 1082 to your DTE device, use a V.35  
straight-through cable (see Figure 6). Appendix C, “Model 1082C and  
1082D Interface Pin Assignments” on page 28 describes pin assign-  
ments and signal sources for the Model 1082 V.35 interface. When pur-  
chasing or constructing an interface cable, please refer to the pin  
diagrams in Appendix C as a guide.  
DSL Span  
Model 1082  
Straight-through M/34 cable  
Model 1082 (DCE)  
V.35 Router (DTE)  
Figure 6. Connecting the Model 1082 to a V.35 serial DTE  
Connecting the Model 1082 (V.35) to a DCE Device  
The Model 1082 provides a V.35 DCE (Data Circuit Terminating Equip-  
ment) interface on an M/34 female connector. As a DCE, this interface is  
16  
 
       
designed to connect to DTE equipment, such as a router. However, tail-  
circuit applications require connection to another DCE equipment, such  
as a multiplexer (see Figure 7). When connecting the V.35 interface of  
the Model 1082 to your DCE device, use a V.35 null modem cable. Some  
applications may also require the installation of a V.35 tail-circuit buffer to  
account for small differences in clock frequency between the 1082 and  
the V.35 DCE (Multiplexer).  
DSL Span  
Model 1082  
Model 1082 (DCE)  
V.35 Multiplexer (DCE)  
Figure 7. Connecting the Model 1082 to V.35 serial DCE  
4.3 CONNECTING THE MODEL 1082 (X.21) SERIAL INTERFACE  
Model 1082 supports X.21 serial port connections. This section  
describes how to connect the serial ports to your X.21 equipment.  
Connecting the Model 1082 (X.21) to a “DCE” or “DTE” Device  
The Model 1082 provides an X.21 interface on a DB-15 female connector.  
The X.21 interface default configuration is DCE (Data Circuit Terminating  
Equipment) for connection to DTE (Data Terminal Equipment) such as a  
router. However, the X.21 interface on the Model 1082 may be configured as  
DTE (Data Terminal Equipment) for connection to DCE such as a modem or  
17  
 
     
multiplexer. When connecting the X.21 interface of the Model 1082 to your  
DTE device, use a X.21 straight through cable (see Figure 8).  
DSL Span  
Model 1082  
Router (DTE)  
Straight-through  
15-pin D-Sub cable  
or  
Mux (DCE)  
Model 1082 (DCE)  
Figure 8. Connecting the Model 1082 to X.21 DTE or DCE  
To change the DCE/DTE orientation from the default position (DCE), you  
must open the case Model 1082 case.  
Opening the Case  
To open the Model 1082 case, insert a flat head screw driver into an open  
slot on both sides of the case, as shown in Figure 9.Twist the screw driver  
head slightly and the top half of the case will separate from rest of the case.  
Figure 9. Opening the 1082 case with a small screwdriver  
18  
 
   
The DCE/DTE strap is located on the top side of the 1082 PC board (see  
Figure 10). The arrows on the top of the strap indicate the configuration  
of the X.21 port (for example, if the DTE arrows are pointing toward the  
DB-15 connector, the X.21 port is wired as a DTE). Change the DCE/  
DTE orientation by pulling the strap out of its socket, rotating it 180º, then  
plugging the strap back into the socket. To close the case, fit the two  
halves together snugly and snap them back in place.  
In this example, the DCE/DTE  
l 3/G.704 Modem  
er  
E  
strap is configured for DTE  
because the DTE label on the  
strap is pointed toward the  
DB-15 connector  
Made in the USA  
Inte
Line  
DB-15 (X.21)  
connector  
d G.703/G.704 Mo
Power  
E  
Made in the USA  
Inte
DCE/DTE  
strap  
Line  
Figure 10. Setting the DCE/DTE strap  
4.4 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 (100–240VAC)  
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 interna-  
tional power cords are available for the universal power supply (Refer to  
Appendix B, “Model 1082C and 1082D Factory Replacement Parts and  
Accessories” on page 27 for country-specific power cords.  
19  
 
   
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 48VDC) and plugs into the  
barrel power supply jack on the rear of the 1082. Refer to Figure 11 to  
make the proper connection.  
To Power  
Supply Jack  
To -48VDC  
Source  
-Vin  
+Vin  
Figure 11. Connecting DC power to the 48V-PSM DC power supply  
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,  
[email protected], for more information.  
WARNING  
20  
 
 
5.0 OPERATION  
Once the Model 1082 is properly configured and installed, it should oper-  
ate 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 “Con-  
necting Power” on page 19, and that the unit is connected to the appro-  
priate 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 12 shows the  
front panel location of each LED. See also, LED description Table 1.  
NetLink™ 10Base-T iDSL Model  
Link  
511E/RDL  
Normal  
DSL  
10BT  
NS  
ER  
TM  
511/RDL  
DSL NS  
10BT ER  
TM Loopback  
switch  
Figure 12. Model 1082 front panel  
Table 1: LED descriptions  
DSL Link  
TD & RD  
(Active Green) Solid green (On) indicates that the end  
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.  
Glows yellow to indicate an idle condition of Binary “1”  
data on the respective terminal interface signals. Green  
indicates Binary “0” data  
NS  
ER  
(No Signal) glows red to indicate that the local Model  
1082 is not connected with the remote Model 1082.  
Blinks ON/OFF after a 511/511E test has timed out.  
See “Using the V.52 (BER) test pattern generator” on  
page 24 for more information.  
TM  
Glows yellow to indicate TM  
21  
 
       
5.3 TEST MODES  
The Model 1082 offers two proprietary loopback test modes, plus a built-  
in V.52 BER test pattern generator, to evaluate the condition of the  
modems and the communication link. These tests can be activated phys-  
ically 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 13). For example, characters typed on the  
keyboard of a terminal will appear on the terminal screen.  
LLB initiated  
To perform an LLB test, follow these steps:  
1. Activate LLB. This may be done in one of three ways:  
Move the front panel toggle switch up to “Local”.  
Raise the LLB signal on the interface (see Appendix C, “Model  
1082C and 1082D Interface Pin Assignments” on page 28).  
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 24. 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 interface cable between the terminal and the  
Model 1082.  
22  
 
     
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 14, below). 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.  
Local 1082  
Remote 1082  
RDL initiated  
Figure 14. Remote Digital Loop  
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. This may be done in three ways:  
Raise the RDL signal on the interface (see Appendix C, “Model  
1082C and 1082D Interface Pin Assignments” on page 28).  
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 24. 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 check the twisted pair line for  
proper connections and continuity.  
Note The Remote Digital Loopback (RDL) will not work for 144 kbps.  
You must first set the units to 128 kbps or slower to use the RDL.  
23  
 
   
Using the V.52 (BER) test pattern generator  
To use the V.52 BER tests in conjunction with the Remote Digital Loop-  
back 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 built-in 511 generator and detector  
are working properly.  
24  
 
 
APPENDIX A  
MODEL 1082 SPECIFICATIONS  
A.1 TRANSMISSION FORMAT  
Synchronous or asynchronous  
A.2 TRANSMISSION LINE  
Single unconditioned twisted pair  
A.3 CLOCKING  
Internal, external or receive loopback  
A.4 DISTANCE  
Distance, max, all data rates:  
• 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 (8 km) on 24 AWG (0.5mm) wire  
• 3.4 (5.5 km) on 26 AWG (0.4mm) wire  
A.5 DATA RATES  
• Synchronous 19.2, 32, 56, 64,128, and 144* kbps  
• Asynchronous 0–38.4 kbps  
A.6 DIAGNOSTICS  
V.52 compliant bit error rate pattern (511/511E pattern) generator and  
detector with error injection mode; Local Line Loopback and Remote  
Digital Loopback, activated by front panel switch or via serial interface  
A.7 LED STATUS INDICATORS  
TD, RD, DSL Link, NS (no signal), ER (error) and TM (test mode)  
*
144 kbps data rate is only available on the Model 1082/144.  
19.2 kbps rate is available on all Model 1082 series modems except  
for the 1082/144.  
25  
 
               
A.8 CONNECTORS  
RJ-45 on line side; DB-25 female, M/34 female or DB-15 female on serial  
interface side.  
A.9 POWER  
100–253 VAC, 50–60 Hz (universal input option); 48 VDC (option).  
5 watts.  
A.10 TEMPERATURE RANGE  
32–122°F (0–50°C)  
A.11 ALTITUDE  
0–15,000 feet (0–4,572 meters)  
A.12 HUMIDITY  
5 to 95%, non-condensing  
A.13 DIMENSIONS  
4.125W x 1.625H x 6.0D in. (10.5W x 4.1W x 15.2D cm)  
A.14 WEIGHT  
2.01 lbs. (1.0kg)  
A.15 LINE INTERFACE  
Transformer coupled 1500 VAC isolation  
26  
 
               
APPENDIX B  
MODEL 1082C AND 1082D FACTORY REPLACEMENT PARTS AND  
ACCESSORIES  
Model #  
Description  
1082/C  
1082/D  
V.35 iDSL Modem  
X.21 iDSL Modem  
1082/144/C  
1082/144/D  
V.35 iDSL Modem with maximum data rate of 144 kbps  
X.21 iDSL Modem with maximum data rate of 144 kbps  
48V-PSM  
DC Power Supply Module  
08055DCUI 100-240VAC (+5V ±5% reg. DC/2A) Universal Input Adapter  
0805EUR  
0805UK  
0805US  
0805AUS  
0805DEN  
0805FR  
0805IN  
European Power Cord CEE 7 (“A”)  
United Kingdom Power Cord (“D”)  
American Power Cord (“K”)  
Australia/New Zealand Power Cord (“C”)  
Denmark Power Cord (“E”)  
France/Belgium Power Cord (“F”)  
India Power Cord (“G”)  
0805IS  
Israel Power Cord (“H”)  
0805JAP  
0805SW  
Japan Power Cord (“J”)  
Switzerland Power Cord (“L)  
07M1082  
User Manual  
27  
 
 
APPENDIX C  
MODEL 1082C AND 1082D INTERFACE PIN ASSIGNMENTS  
V.35 INTERFACE  
(M/34 Female Connector)  
(DCE Orientation)  
Pin #  
Signal  
B
C
D
E
SGND (Signal Ground)  
RTS (Request to Send) (DTE Source)  
CTS (Clear to Send) (DCE Source)  
DSR (Data Set Ready) (DCE Source)  
CD (Carrier Detect) (DCE Source)  
DTR (Data Terminal Ready) (DTE Source)  
LLB (Local Line Loop) (DTE Source)  
TM (Test Mode) (DTE Source)  
F
H
L
M
N
P
RDL (Remote Digital Loop) (DTE Source)  
TD (Transmit Data) (DTE Source)  
RD (Receive Data) (DCE Source)  
TD/ (Transmit Data-B) (DTE Source)  
RD/ (Receive Data-B) (DCE Source)  
XTC (External Transmit Clock) (DTE  
RC(Receiver Clock) (DCE Source)  
XTC/ (External Transmit Clock) (DTE source)  
RC/ (Receiver Clock) (DCE Source)  
TC (Transmitter Clock-A) (DCE Source)  
TC/ (Transmit Clock-B) (DCE Source)  
R
S
T
U
V
W
X
Y
AA  
28  
 
 
APPENDIX D  
MODEL 1082C AND 1082D INTERFACE PIN ASSIGNMENTS  
X.21 Interface  
(D-Sub-15 Female Connector)  
(DTE /DCE Orientation)  
Pin #  
Signal  
1
2
Frame Ground  
T (Transmit Data-A) (DTE Source)  
C (Control-A) (DTE Source)  
3
4
R (Receive Data-A) (DCE Source)  
I (Indication-A) (DCE Source)  
5
6
S (Signal Element Timing-A) (DCE Source)  
BT (Byte Timing-A) (DCE Source)  
SGND (Signal Ground)  
7
8
9
T/ (Transmit Data-B) (DTE Source)  
C/ (Control-B) (DTE Source)  
10  
11  
12  
13  
14  
R/ (Receive Data-B) (DCE Source)  
I/ (Indication-B) (DCE Source)  
S/ (Signal Element Timing-B) (DCE Source)  
BT/ (Byte Timing-B) (DCE Source)  
29  
 
 
APPENDIX E  
MODEL 1082C AND 1082D INTERFACE PIN ASSIGNMENT  
X.21 Interface  
(DB-15 Female Connector)  
(DTE /DCE Configuration)  
Pin #  
Signal  
1
2
Frame Ground  
T (Transmit Data-A)  
C (Control-A)  
3
4
R (Receive Data-A)  
I (Indication-A)  
5
6
S (Signal Element Timing-A)  
BT (Byte Timing-A)  
SGND (Signal Ground)  
T/ (Transmit Data-B)  
C/ (Control-B)  
7
8
9
10  
11  
12.  
13  
14  
R/ (Receive Data-B)  
I/ (Indication-B)  
S/ (Signal Element Timing-B)  
BT/ (Byte Timing-B)  
30  
 
 
Notes  
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31  
 
Notes  
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Copyright © 2000, 2001  
Patton Electronics Company  
All Rights Reserved  
32  
 

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