Patton electronic TV Mount 1080ARC User Manual

USER  
MANUAL  
MODEL 1080ARC  
Universal Synchronous &  
Asynchronous  
Short Range Modem  
Rack Mount Card  
Part# 07M1080ARC-D  
Doc# 072051UD  
Revised 7/12/01  
SALES OFFICE  
(301) 975-1000  
TECHNICAL SUPPORT  
(301) 975-1007  
An ISO-9001  
Certified  
Company  
 
Reading The Test....................................................................... 29  
Local Analog Loopback (LAL) .................................................... 30  
Remote Digital Loopback (RDL)................................................. 31  
Using The V.52 BER Test Independently................................... 32  
A
B
C
D
Specifications ............................................................................ 33  
Cable Recommendations.......................................................... 34  
1080ARC Factory Replacement Parts...................................... 36  
1080ARC Interface Standards .................................................. 37  
3
 
1.0 WARRANTY INFORMATION  
Patton Electronics warrants all Model 1080ARC 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 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  
1080ARC. Technical Service hours: 8AM to 5PM EST, Monday through  
Friday.  
5
 
 
2.0 GENERAL INFORMATION  
Thank you for purchasing 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  
(301) 975-1007.  
2.1 FEATURES  
• Synchronous or asynchronous operation  
• 2-wire half-duplex or 4-wire full- or half-duplex  
V.52 & V.54 test modes  
• Automatic equalization & gain control  
• Anti-streaming timer  
• Data rates to 57.6 kbps  
• Distances up to 20 miles (32 km)  
• Point-to-point or multipoint  
• Internal, external, or received loopback clocking  
• Hardware and software flow control support  
• Built-in transformer isolation & high speed surge protection  
• Bi-color LED indicators  
• Switchable 120V or 240V power supply  
• Mounts in Patton’s 16-card rack chassis  
• Detects broken or inferior cable by lighting error LED  
2.2 DESCRIPTION  
The Model 1080ARC Series Universal Short Range Modem operates  
2-wire (half duplex) or 4-wire (full or half duplex), in synchronous or asyn-  
chronous modes at an extended range of 20 miles. It operates at 12  
switch-selectable data rates to 57.6 kbps. The Model 1080ARC always  
operates in sync. mode between the local and remote modems; when  
connected to an async. RS-232 device, the Model 1080ARC converts  
the async. data to sync. data.  
6
 
     
The Model 1080ARC has several features to enhance overall perfor-  
mance: automatic equalization, automatic gain control, antistreaming  
timer, transformer isolation and Silicon Avalanche Diode surge protec-  
tion. The Model 1080ARC features V.52 compliant bit error rate pattern  
tests and two V.54 test modes.  
The Model 1080ARC is designed to mount in Patton’s 2U high 19” rack  
chassis. This 16-card chassis has a switchable 120/240 volt power sup-  
ply and mounts cards in a mid-plane architecture: The front card can be  
plugged into different rear cards. This means that the Model 1080ARC  
card can have several interface options and can be switched with other  
Patton short haul cards.  
7
 
3.0 CONFIGURATION  
This section describes the location and orientation of the Model  
1080ARC’s configuration switches and provides detailed instructions on  
setting each of the switches.  
The Model 1080ARC uses a unique package of 24 DIP switches that  
allow configuration to an extremely wide range of applications. These 24  
DIP switches are accessible when the card is slid out of the rack chassis.  
Once configured, the Model 1080ARC is designed to operate transpar-  
ently, without need for frequent re-configuration.  
3.1 SWITCH LOCATIONS AND ORIENTATION  
The Model 1080ARC has three sets of eight switches—S1, S2, and S3—  
which are mounted on the PC board (Figure 1). These configuration  
switches 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, antistream control and input impedance. As Figure 2  
shows, the orientation of all DIP switches is the same with respect to  
“ON” and “OFF” positions.  
Figure 1. Model 1080ARC board, showing location of DIP switches  
Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions  
8
 
       
3.2 CONFIGURATION SWITCH SET “S1”  
The DIP switches on S1 set data rate, clock source, async./sync. mode  
and carrier control method. The default settings are summarized in  
Table 1.  
Table 1: Summary of DIP switch default settings for set S1  
Position  
Function  
Factory Default  
9,600 bps  
S1-1  
S1-2  
S1-3  
S1-4  
S1-5  
S1-6  
S1-7  
S1-8  
Data Rate  
Data Rate  
On  
Off  
Off  
On  
On  
On  
On  
Off  
9,600 bps  
9,600 bps  
9,600 bps  
Internal  
Data Rate  
Data Rate  
Clock Source  
Clock Source  
Async./Sync.  
Carrier Control  
Internal  
Async.  
Constantly On  
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 1080ARC (see  
Table 2).  
Table 2: S1-1 through S1-4: Data Rate Settings  
S1-1  
S1-2  
S1-3  
S1-4  
Setting  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
On  
Off  
Off  
On  
On  
Off  
Off  
On  
On  
On  
On  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
On  
On  
Off  
Off  
On  
On  
On  
On  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
1.2 kbps  
1.8 kbps  
2.4 kbps  
3.6 kbps  
4.8 kbps  
7.2 kbps  
9.6 kbps  
14.4 kbps  
19.2 kbps  
28.8 kbps  
38.4 kbps  
57.6 kbps  
9
 
       
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 1080ARC (see Table 3).  
Table 3: S1-5 and S1-6: Clock Source Settings  
S1-5  
S1-6  
Setting  
On  
Off  
On  
On  
On  
Off  
Internal transmit clock  
Receive recover clock  
External transmit clock  
S1-7: Asynchronous/Synchronous Mode  
The setting for switch S1-7 determines whether the Model 1080ARC is in  
asynchronous or synchronous operating mode (see Table 4).  
Table 4: Asynchronous/Synchronous Mode Settings  
S1-7  
Setting  
Off  
Synchronous  
S1-8: Carrier Control Method  
The setting for switch S1-8 determines whether the carrier is “constantly  
on” or “controlled by RTS”. This setting allows for operation in switched  
carrier, multipoint and/or hardware handshaking applications (see  
Table 5).  
Table 5: Carrier Control Method Settings  
S1-8  
Setting  
Off  
On  
Constantly on  
Controlled by RTS  
10  
 
         
3.3 CONFIGURATION SWITCH SET S2  
The DIP switches on S2 set word length, extended signaling rate, RTS/  
CTS delay, V.52 & V.54 diagnostic tests and 2- and 4-wire operation.  
The default settings are summarized in Table 6.  
Table 6: Summary of DIP switch default settings for S2  
Position  
Function  
Factory Default  
S2-1  
S2-2  
S2-3  
S2-4  
S2-5  
S2-6  
S2-7  
S2-8  
Not Used  
2-Wire/4-Wire  
N/A  
Off (4-Wire)  
V.52/V.54 Tests  
RTS/CTS Delay  
RTS/CTS Delay  
Extended Signaling Rate  
Word Length  
Off (Normal Operation)  
On (7 ms)  
On (7 ms)  
Off (-2.5% to 1%)  
Off (10 bits)  
Word Length  
Off (10 bits)  
S2-2: 2-Wire/4-Wire Mode Selection  
The setting for switch S2-2 determines whether the Model 1080ARC is  
operating in 2-wire or 4-wire mode (see Table 7).  
Table 7: 2-Wire/4-Wire Mode Selection Settings  
S2-2  
Setting  
Off  
On  
4-wire (full or half duplex)  
2-wire (half duplex only)  
S2-3: V.52 and V.54 Diagnostic Test  
To reset the V.54 circuit, set switch S2-3 to the “ON” position, then back  
to the “OFF” position (see Table 8).  
Table 8: V.52 and V.54 Diagnostic Test Settings  
S2-3  
Setting  
Off  
On  
Normal Operation  
Test Disabled  
11  
 
           
S2-4 and S2-5: RTS/CTS Delay  
The combined settings for switches S2-4 and S2-5 determine the  
amount of delay between the time the Model 1080ARC “sees” RTS and  
when it sends CTS. Options are no delay, 7 ms and 53 ms (see Table 9).  
Table 9: RTS/CTS Delay Settings  
S2-4  
S2-5  
Setting  
On  
On  
Off  
Off  
On  
Off  
On  
Off  
7 ms  
53 ms  
No delay  
No delay  
S2-6: Extended Signaling Rate  
The setting for switch S2-6 determines the range of variability the Model  
1080ARC “looks for” in asynchronous data rates (i.e., the actual variance  
from a given frequency level the Model 1080ARC will tolerate (see  
Table 10).  
Table 10: Extended Signaling Rate Settings  
S2-6  
Setting  
Off  
On  
-2.5% to +1%  
-2.5% to +2.3%  
S2-7 and S2-8: Word Length  
Switches S2-7 and S2-8 are set in combination to determine the word  
length for asynchronous/synchronous data (see Table 11).  
Table 11: Word Length Settings  
S2-7  
S2-8  
Setting  
On  
On  
Off  
Off  
Off  
On  
Off  
On  
8 bits  
9 bits  
10 bits  
11 bits  
12  
 
       
3.4 CONFIGURATION SWITCH SET S3  
The DIP switches on S3 set the antistream control, local loopback  
enable, remote loopback enable and receive (input) impedance levels for  
the Model 1080ARC. The default settings are summarized in Table 12  
and Table 13.  
Table 12: Summary of DIP switch default settings for S3  
Position  
Function  
Factory Default  
200 Ohms  
S3-1  
S3-2  
S3-3  
S3-4  
S3-5  
S3-6  
S3-7  
S3-8  
Input Impedance  
Input Impedance  
Not yet assigned  
Mode Selection  
On  
Off  
n/a  
On  
Off  
Off  
Off  
Off  
200 Ohms  
Point to Point  
Disabled  
Local Loopback  
Remote Loopback  
Antistream Control  
Antistream Control  
Disabled  
Disabled  
Disabled  
Table 13: Selection Table for S3-1, S3-2  
Data Rates (kbps)  
Cable  
gauge  
1.2  
1.8  
2.4  
3.6  
4.8  
7.2  
9.6  
14.4  
19.2  
28.8  
38.4  
57.6  
19  
22  
24  
26  
320  
320  
320  
320  
200  
320  
200  
200  
200  
200  
200  
200  
200  
200  
130  
200  
130  
130  
130  
130  
130  
130  
130  
130  
320  
320  
320  
320  
320  
320  
320  
320  
200  
320  
200  
200  
200  
200  
200  
200  
200  
200  
130  
200  
130  
130  
130  
130  
13  
 
     
S3-1: Input Impedance  
The setting for switch S3-1, S3-2 determines the 1080ARC’s input  
impedance. This allows you to choose the optimum impedance setting  
for your application. In long distance applications the impedance of the  
cable must match the impedance of the load (or resistor) of the Model  
1080ARC. Thicker gauge cables requires a lower ohm setting, while a  
thinner gauge cable should receive a higher ohm setting. If you are  
using higher speeds you will need a lower ohm setting, and a higher ohm  
setting for the slower speeds. See Table 13 for more details on selecting  
a setting.  
Table 14: Input Impedance Settings  
S3-1S3-2  
Setting  
130 ohms  
On  
On  
Off  
Off  
On  
Off  
On  
200 ohms  
320 ohms  
Off High impedance (minimum 2k-ohms)  
S3-4: Mode Selection  
The setting for switch S3-4 allows the user to choose the appropriate set-  
ting for point-to-point or multipoint applications (see Table 15).  
Table 15: Mode Selection Settings  
S3-4  
Setting  
On  
On  
Off  
Point-to-point  
Multipoint application as “Master”  
Multipoint application as “Slave”  
S3-5: RS-232 Initiation of Local Loopback Test  
The setting for switch S3-5 determines whether or not the Model  
1080ARC’s local analog loopback test can be initiated by raising pin 18  
on the RS-232 interface (see Table 16).  
Table 16: RS-232 Local Loopback Settings  
S3-5  
Setting  
On  
Off  
RS-232 initiation enabled  
RS-232 initiation disabled  
14  
 
         
S3-6: RS-232 Initiation of Remote Loopback Test  
The setting for switch S3-6 determines whether or not the Model  
1080ARC’s remote digital loopback test can be initiated by raising pin 21  
on the RS-232 interface (see Table 17).  
Table 17: RS-232 Remote Loopback Settings  
S3-6  
Setting  
On  
Off  
RS-232 initiation enabled  
RS-232 initiation disabled  
S3-7 and S3-8: Antistream Control  
Switches S3-7 and S3-8 are set in combination to determine the timeout  
period for the Model 1080ARC’s antistream control timer (see Table 18).  
Table 18: Antistream Control Settings  
S3-7  
S3-8  
Setting  
Disabled  
Off  
Off  
On  
On  
Off  
On  
Off  
On  
12.5 seconds  
50 seconds  
12.5 seconds  
15  
 
       
3.5 REAR CARD CONFIGURATION  
The Model 1080ARC has four interface card options: DB-25/RJ-11, Dual  
RJ-45, RJ-45/RJ-11 and DB-25/RJ-45. Each of these options supports  
one RS-232 connection and one 4-wire connection (the RS-232 port is  
always the lower port on the interface card). Figure 3 illustrates the four  
different interface options for the Model 1080ARC:  
Figure 3. Model 1080ARC interface card options  
Prior to installation, you will need to examine the rear card that you have  
selected and ensure that it is configured properly for your application.  
Each rear card is configured by setting straps located on the PC board.  
Sections “DB-25/RJ-11 & DB-25/RJ-45 Strap Settings” on page 17 and  
“RJ-45/RJ-11 & RJ-45/RJ-45 Strap Settings” on page 19 describe the  
strap locations and possible settings for each rear card.  
16  
 
   
DB-25/RJ-11 & DB-25/RJ-45 Strap Settings  
Figure 4 shows strap locations for the Model 1000RCM12511 (DB-25/  
RJ-11) and the Model 1000RCM12545 (DB-25/ RJ-45) rear cards.  
These straps determine various grounding characteristics for the RS-232  
and twisted pair lines.  
Figure 4. DB-25/RJ-11 & DB-25/RJ-45 strap locations  
Figure 5 shows the orientation of the rear interface card straps. Observe  
that the strap can either be on pegs 1 and 2, or on pegs 2 and 3.  
Figure 5. Orientation of interface card straps  
17  
 
     
Table 19 provides an overview of strap functions for the DB-25/modular  
cards. Following this overview is a detailed description of each strap's  
function.  
Table 19: DB-25/RJ-11 & DB-25/RJ-45 Interface Card Strap Summary  
Strap  
Function  
Position 1&2  
Position 2&3  
JB2  
JB3  
Line Shield & FRGND  
Connected  
Connected  
Open*  
Open*  
DTE Shield (Pin1) &  
FRGND  
JB4  
FRGND & SGND  
Connected  
Open*  
* indicates factory default  
Line Shield & FRGND (JB2)  
This strap pertains to the line interface. In the connected (closed) posi-  
tion, this strap links RJ-11 pins 1 and 6, or RJ-45 pins 2 and 7 to frame  
ground. These pins can be used as connections for the twisted pair  
cable shield. In the open (disconnected) position, pins 1 and 6 (or 2 and  
7) remain connected to each other, but are “lifted” from the frame ground  
(see Table 20).  
Table 20: Line Shield & FRGND (JB2) Settings  
JB2  
Position 1&2 =  
Line Shield and FRGND Connected  
Position 2&3 = Line Shield and FRGND Not Connected  
DTE Shield (Pin 1) & FRGND (JB3)  
In the connected (closed) position, this strap links DB-25 pin 1 and frame  
ground. In the open (disconnected) position, pin 1 is “lifted” from frame  
ground (see Table 21).  
Table 21: DTE Shield (Pin 1) & FRGND (JB3) Settings  
JB3  
Position 1&2 =  
DTE Shield (Pin 1) and FRGND Connected  
Position 2&3 = DTE Shield (Pin 1) and FRGND Not Connected  
18  
 
       
SGND & FRGND (JB4)  
In the connected (closed) position, this strap links DB-25 pin 7 (Signal  
Ground) and frame ground. In the open (disconnected) position, pin 1 is  
“lifted” from frame ground (see Table 22).  
Table 22: SGND & FRGND (JB4) Settings  
JB4  
Position 1&2 =  
Position 2&3 =  
SGND (pin 7) and FRGND Connected  
SGND (Pin 7) and FRGND Not Connected  
RJ-45/RJ-11 & RJ-45/RJ-45 Strap Settings  
Figure 6 shows strap locations for the Model 1000RCM1D11 (RJ-45/RJ-  
11) and the Model 1000RCM1D45 (RJ-45/ RJ-45) rear cards. These  
straps determine various grounding characteristics for the RS-232 and  
twisted pair lines.  
Figure 6. RJ-45/RJ-11 & RJ-45/RJ-45 strap locations  
19  
 
       
Table 23 provides an overview of strap functions for the modular/modular  
cards. Following the table is a detailed description of each strap's func-  
tion.  
Table 23: RJ-45/RJ-11 & RJ-45/RJ-45 Interface Card Strap Summary  
Strap  
Function  
Position 1&2  
Position 2&3  
JB2  
JB5  
JB6  
Line Shield & FRGND  
SGND & FRGND  
DTE Pin 2  
Connected  
Connected  
DSR*  
Open*  
Open*  
RI  
Line Shield & FRGND (JB2)  
This strap pertains to the line interface. In the connected (closed) posi-  
tion, this strap links RJ-11 pins 1 and 6, or RJ-45 pins 2 and 7 to frame  
ground. These pins can be used as connections for the twisted pair  
cable shield. In the open (disconnected) position, pins 1 and 6 (or 2 and  
7) remain connected to each other, but are “lifted” from frame ground  
(see Table 24).  
Table 24: Line Shield & FRGND (JB2) Settings  
JB2  
Position 1&2 =  
Position 2&3 =  
Line Shield and FRGND Connected  
Line Shield and FRGND Not Connected  
SGND & FRGND (JB5)  
This strap pertains to the DTE interface, which is a 10-position modular  
RJ-45 jack. In the connected (closed) position, this strap links modular  
pin 5 (Signal Ground) and frame ground. In the open (disconnected)  
position, pin 5 is “lifted” from frame ground (see Table 25).  
Table 25: SGND & FRGND (JB5) Settings  
JB5  
Position 1&2 =  
SGND (pin 5) and FRGND Connected  
Position 2&3 = SGND (pin 5) and FRGND Not Connected  
20  
 
     
DTE Interface Pin 2 (JB6)  
This strap configures DTE interface pin 2 for Ready Start (DSR) opera-  
tion when placed on pegs 1 & 2. Placing the strap on pegs 2 & 3 is not a  
valid option when using this rear interface card in conjunction with the  
Model 1080ARC (see Table 26)  
Table 26: DTE Interface Pin 2 (JB6) Settings  
JB6  
Position 1&2 =  
Ready Start (DSR) Operation  
Position 2&3 = Not a valid option  
21  
 
 
4.0 INSTALLATION  
This section describes the functions of the Model 1000R16P rack chas-  
sis, tells how to install front and rear Model 1080ARC cards into the  
chassis, and provides diagrams for wiring the interface connections cor-  
rectly.  
4.1 THE MODEL 1000R16P RACK CHASSIS  
The Model 1000R16P Rack Chassis (Figure 7) has sixteen short range  
modem card slots, plus its own power supply. Measuring only 3.5” high,  
the Model 1000R16P is designed to occupy only 2U in a 19” rack.  
Sturdy front handles allow the Model 1000R16P to be extracted and  
transported conveniently.  
The Rack Power Supply  
The power supply included in the Model 1000R16P 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.  
Figure 7. Model 1000R16P Rack Chassis with power supply  
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 1000R16P 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. Be sure power is off before power module card is removed.  
22  
 
         
4.2 INSTALLING THE MODEL 1080ARC INTO THE CHASSIS  
The Model 1080ARC 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 1080ARC 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 1000R16P chassis allows “hot swapping” of  
cards, it is not necessary to power down the rack when you  
install or remove a Model 1080ARC.  
4.3 WIRING THE MODEL 1080ARC  
Each of the rear interface cards compatible with the Model 1080ARC has  
one RS-232 port and one 4-wire (twisted pair) port. These cards provide  
a female DB-25 for RS-232 connection.  
RS-232 Connection  
The Model 1080ARC uses a DB-25 female to connect the RS-232 inter-  
face to your computing hardware. It is pinned according to the RS-  
232C/V.24 interface standard. For specific interface pin-outs, please  
refer to the diagrams in Appendix D on page 37 of this manual.  
The Model 1080ARC is wired to connect to a DTE. If your RS-232 out-  
put device is a DTE, use a straight though cable to connect to the Model  
1080ARC. If your RS-232 output device is DCE, call Technical Support  
at (301) 975-1007 for specific installation instructions.  
Twisted Pair Connection  
The Model 1080ARC operates over one or two twisted pair. In all appli-  
cations, the twisted pair wire must be 26 AWG or thicker, unconditioned,  
dry, metallic wire. Both shielded and unshielded wire yield favorable  
results.  
23  
 
       
Note  
The Model 1080ARC communicates in a closed data circuit with  
another Model 1080ARC or other compatible modem. Dial-up  
analog circuits, such as those used with a standard Hayes-type  
modem, are not acceptable. For further information about  
acceptable wire grades, please refer to the diagrams in  
Point-to-Point Twisted Pair Connection  
The 6-position RJ-11 and 8-position RJ-45 jack options for the Model  
1080ARC are prewired for a standard TELCO wiring environment. Con-  
nection of a 2-wire or 4-wire twisted pair circuit between two or more  
Model 1080ARCs requires a crossover cable as shown in Table 27,  
Table 28, Table 29, Table 30 and Figure 8.  
Table 27: RJ-11/4-Wire  
SIGNAL  
PIN#  
COLOR  
COLOR  
PIN#  
SIGNAL  
GND†  
RCV-  
XMT+  
XMT-  
1
2
3
4
5
6
Blue‡  
Yellow  
Green  
Red  
White  
Red  
6
4
5
2
3
1
GND  
XMT-  
RCV+  
RCV-  
XMT+  
GND  
Black  
Yellow  
Green  
Blue  
RCV+  
GND  
Black  
White  
Table 28: RJ-45/4-Wire  
SIGNAL  
PIN#  
COLOR  
COLOR  
PIN#  
SIGNAL  
GND†  
RCV-◊  
XMT+  
XMT-  
2
3
4
5
6
7
Orange‡  
Black  
Brown  
Green  
Yellow  
Black  
7
5
6
3
4
2
GND  
XMT-  
RCV+  
RCV-  
XMT+  
GND  
Red  
Green  
Yellow  
Brown  
RCV+  
GND  
Red  
Orange  
Connection to ground is optional  
Standard color codes yours may be different  
The Model 1080ARC is not sensitive to polarity  
24  
 
     
Table 29: RJ-11/2-Wire  
SIGNAL  
PIN#  
COLOR  
COLOR  
PIN#  
SIGNAL  
XMT+◊  
3
4
Green‡  
Red  
Green  
Red  
3
4
XMT+  
XMT-  
XMT-  
Table 30: RJ-45/2-Wire  
SIGNAL  
PIN#  
COLOR  
COLOR  
PIN#  
SIGNAL  
XMT+◊  
4
5
Red‡  
Red  
4
5
XMT+  
XMT-  
XMT-  
Green  
Green  
Standard color codes yours may be different  
The Model 1080ARC is not sensitive to polarity  
Figure 8. AT&T standard modular color codes  
25  
 
     
Multipoint Twisted Pair Connection  
The Model 1080ARC supports multipoint applications using a star topol-  
ogy. Maximum distance between the units will vary based upon the  
number of drops, data rate, wire gauge, etc. Call Patton Technical Sup-  
port for specific distance estimates. Figure 9 and Figure 10 show how to  
wire the one-pair and two-pair cables properly for a Model 1080ARC star  
topology. Note that the ground connection is not needed.  
Figure 9. Two-pair star wiring for Model 1080ARC host and slaves  
Figure 10. Single-pair star wiring for Model 1080ARC host and slaves  
26  
 
     
5.0 OPERATION  
Once you have configured each Model 1080A properly and connected  
the twisted pair and RS-232 cables (see section 4.0, “Installation” on  
page 22), you are ready to operate the units. This section describes  
reading the LED status monitors, powering-up and using the built-in V.52  
and V.54 test modes.  
5.1 LED STATUS MONITORS  
The Model 1080A features six front panel status LEDs that indicate the  
condition of the modem and communication link. Figure 11 shows the  
front panel location of each LED. Following Figure 11 is a description of  
each LED's function.  
Figure 11. The Model 1080ARC front panel, showing LEDs and switches  
The “TD” and “RD” Indicators  
The “TD” and “RD” indicators blink red and green with data activity. Red  
indicates a low RS-232 logic level, green indicates a high RS-232 logic  
level.  
27  
 
       
Note  
RS-232 devices idle in a low state, so the LED will glow red if  
the connections are correct and the RS-232 device is in an idle  
state.  
The “RTS” and “CD” Indicators  
The “RTS” and “CD” indicators are bi-color and will glow red for a “low”  
signal or green for a “high” signal. RTS lights for an incoming signal on  
RS-232 pin 4. CD lights for an incoming signal on the line side, and the  
resulting output signal on RS-232 pin 8.  
The “Test” Indicator  
The green “Test” LED indicates that V.52 or V.54 tests are running.  
The “Error” Indicators  
The “Error” indicator LED has three functions:  
A. When the 1080A is in test mode (green “Test” LED is lit), the error  
LED glows red when bit errors occur.  
B. When not in test mode (green “Test” LED is off), the error LED is used  
to indicate an RTS streaming condition. See section 5.2, “Antistreaming  
Error Indicator” on page 29 for information on the antistreaming circuitry.  
C. The “Error” LED is also used to detect line quality, such:  
1. The improper use of flat (non-twisted pair) cable to connect the  
modems.  
2. One or more broken wire in the 4 wire twisted pair cable.  
3. The use of low quality twisted pair cable to connect the modems.  
4. Broken or corroded connector.  
Note  
In detecting line quality the “Error” LED indicator is designed for  
4 wire twisted pair cable only, and may not function properly with  
two wire cable.  
Setting Up The “Error” LED To Test Cable Quality  
If there is any question as to the quality of your line we recommend the  
following test:  
1. Disconnect both local and remote modems from their RS-232 inter-  
face. Make sure “TD”, “RD” and “RTS” LEDs are lit red.  
28  
 
       
2. Set input impedance of both modems to 200. (S3-1 “On”, S3-2  
“Off”)  
3. Set data rate on both modems 9.6kbps. (S1-1 “On”, S1-2 “Off”, S1-  
3 “Off”, S1-4 “On”)  
4. On local modem set “Carrier Constantly On”. (S1-8 “Off”)  
5. Set remote modem to RTS control (S1-8, “On”).  
6. Place both front panel toggle switches to neutral position. (Test Led  
will not light)  
7. Connect both modems to the 4 wire twisted pair cable to be tested.  
(see “Twisted Pair Connection” on page 23)  
Reading The Test  
A. If line quality is good, “Error” LED on local modem will not light and  
“CD” LED will be red. On remote modem “Error” LED will not light and  
“CD” LED will light green.  
B. If flat cable is used or parts of the line are flat cable, “Error” LED on  
local modem will light red and “CD” LED will light green. On remote  
modem “Error” LED will not light and “CD” LED will light green.  
C. If one wire from the 4 wire twisted pair is broken “Error” LED will light  
red and “CD” LED will light green on at least one modem.  
Note  
We cannot guarantee accurate detection if small pieces of flat  
cable are present in the line beyond 1500ft of the local modem.  
5.2 ANTISTREAMING ERROR INDICATOR  
When not in test mode (green “Test” LED is off), the front panel “Error”  
LED is used to indicate a streaming error. When the Model 1080A’s anti-  
streaming circuitry is enabled, the RTS signal from the DTE is timer con-  
trolled. The timer begins to count when the DTE raises RTS. If the time  
period that RTS remains high exceeds the preset timeout period, the  
antistream circuit will force RTS low. The “Error” LED will light red, indi-  
cating a streaming condition (RTS continually on). This feature prevents  
a malfunctioning terminal from tying-up a computer port in a multidrop or  
polling environment. When the DTE drops RTS, the antistreaming timer  
is automatically reset and the front panel “Error” LED turns off. The time-  
out period is DIP switch selectable for 12.5 or 50 seconds.  
29  
 
   
5.3 POWER-UP  
There is no power switch on the Model 1080ARC. Power is automati-  
cally applied to the Model 1080ARC 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 1080ARC is a “hot swappable” card—it will not be  
damaged by plugging it in or removing it while the rack is pow-  
ered up.  
When the local and remote Model 1080ARCs are both powered up and  
are passing data normally, the following LED conditions will exist:  
• PWR = green  
• TD & RD = flashing red and green  
• RTS & CD = green  
• TEST = off  
5.4 TEST MODES  
The Model 1080ARC 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.  
Note  
V.54 and V.52 test modes on the Model 1080ARC are available  
for point-to-point applications only.  
Local Analog Loopback (LAL)  
The Local Analog Loopback (LAL) test checks the operation of the local  
Model 1080ARC, and is performed separately on each unit. Any data  
sent to the local Model 1080ARC 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 mov-  
ing the upper front panel toggle switch RIGHT to “Analog”. Second,  
by raising pin 18 on the RS-232 interface (note: be sure DIP switch  
S1-6 is enabled). Once LAL is activated, the Model 1080ARC trans-  
mit 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.  
30  
 
     
3. Locate the lower of the two toggle switches on the front panel of the  
Model 1080ARC 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 spo-  
radically.  
4. If the BER test indicates no errors are present, move the V.52 tog-  
gle switch to the left, thus activating the “511/E” test with periodic  
errors. If the test is working properly, the red “Error” LED will blink  
regularly. A successful “511/E” test will confirm that the loop is in  
place, and that the Model 1080ARC’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 1080ARC is  
wired straight through, and is plugged in properly. Also, ensure that  
the Model 1080ARC is configured properly. Then re-check your  
DTE equipment. If you still have errors, call Technical Support at  
(301) 975-1007.  
Remote Digital Loopback (RDL)  
The Remote Digital Loopback (RDL) test checks the performance of both  
the local and remote Model 1080ARCs, and the communication link  
between them. Any characters sent to the remote 1080ARC in this test  
mode will be returned back to the originating device. For example, char-  
acters typed on the keyboard of the local terminal will appear on the local  
terminal screen after having been passed to the remote Model 1080ARC  
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 rais-  
ing 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  
1080ARC 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 sporadi-  
cally.  
31  
 
 
4. If the BER test indicates no errors are present, move the V.52 tog-  
gle switch to the left, thus activating the “511/E” test with periodic  
errors. If the test is working properly, the red “Error” LED will blink  
regularly. A successful “511/E” test will confirm that the loop is in  
place, and that the Model 1080ARC’s built-in “511” generator and  
detector are working properly.  
5. If the remote BER test indicates that errors are present, and the  
local analog loopback/BER tests showed that both Model  
1080ARCs 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  
(301) 975-1007.  
Using The V.52 BER Test Independently  
The Model 1080ARC'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 1080ARC. To  
use the V.52 BER test by itself, both operators should simultaneously fol-  
low these steps:  
1. Locate the lower of the two toggle switches on the front panel of the  
Model 1080ARC 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 1080ARCs 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 periodic errors  
present. If the test is working properly, the receiving modem’s red  
“Error” LED will blink regularly. A successful “511/E” test will confirm  
that the link is in place, and that the Model 1080ARC’s built-in “511”  
generator and detector are working properly.  
32  
 
 
APPENDIX A  
SPECIFICATIONS  
Transmission Format:  
Internal Interface:  
Synchronous or asynchronous, 2-  
wire/half duplex, or 4-wire/full or half  
duplex  
Connection to Model 1000R16P rack  
chassis via 50 pin male card edge  
External Interface:  
Transmission Line:  
Data Rates:  
DB-25 female; RJ-11 or RJ-45  
2 or 4-wire UTP, 19 - 26 AWG  
Synchronous or asynchronous at 1.2,  
1.8, 2.4, 3.6, 4.8, 7.2, 9.6, 14.4, 19.2,  
28.8, 38.4, and 57.6 kbps—switch  
selected  
Clocking:  
Controls:  
Internal, external or receive recover  
Carrier constantly “ON” or “controlled  
by RTS”; RTS/CTS delay set to no  
delay, 7 or 53 ms  
Applications:  
Indicators:  
Point-to-point or multi-point  
Bi-color LED indicators for TD, RD,  
RTS & CD; single LED indicators for  
Test and Error  
Diagnostics:  
V.52 compliant bit error rate pattern;  
V.54 compliant—Local Analog Loop-  
back and Remote Digital Loopback,  
activated by front panel switch or via  
RS-232 interface  
Transformer Isolation:  
Surge Protection:  
Temperature:  
1500 V RMS  
Silicon Avalanche Diodes  
0-50°C / 32-122°F  
Humidity:  
0-95%, non-condensing  
0.95”w x 3.1”h x 5.4”l  
Dimensions:  
33  
 
 
APPENDIX B  
CABLE RECOMMENDATIONS  
All Patton Electronics Company Short Range Modems are tested to the  
distances published in our Catalogs and Specification Sheets on twisted-  
pair cable with the following characteristics:  
Wire Gauge  
Capacitance  
Resistance  
19 AWG  
22 AWG  
24 AWG  
26 AWG  
83nF/mi or 15.72 pF/ft. .0163 ft.  
83nF/mi or 15.72 pF/ft. .0326 ft.  
83nF/mi or 15.72 pF/ft. .05165 ft.  
83nF/mi or 15.72 pF/ft. .08235 ft.  
We fully expect that the Short Range Modems will operate on lines with  
specifications different from those tested, but to reduce the potential diffi-  
culties in the field, one should ensure that the cable being used has sim-  
ilar or better characteristics (lower capacitance or lower resistance).  
Model 1080A Distance Table (miles)  
Wire Gauge  
Data Rate  
57,600  
38,400  
28,800  
19,200  
14,400  
9,600  
19  
12  
22  
24  
26  
7.0  
5.3  
4.0  
4.2  
4.6  
5.1  
6.5  
7.5  
8.0  
8.8  
8.8  
9.0  
8.9  
8.9  
13  
7.5  
6.2  
14  
8.0  
6.6  
16  
8.5  
7.0  
17  
11.0  
13.0  
13.5  
14.0  
14.5  
15.0  
15.0  
15.0  
9.2  
18.5  
19.0  
19.5  
20  
10.4  
10.9  
11.3  
11.5  
11.6  
11.5  
11.4  
7,200  
4,800  
3,600  
2,400  
20.5  
20.5  
20  
1,800  
1,200  
Wire with capacitance of 20pF/ft. or less is suitable for all our Short  
Range Modems however, distances may vary from those published in  
our catalog. Resistance will also affect distance but not functionality.  
Wire should be 26 AWG or larger (smaller AWG#).  
Patton products are designed to withstand normal environmental noise  
and conditions however, other environmental factors too numerous to  
discuss in this format may affect proper operation of the SRM’s.  
34  
 
 
Selection of the proper SRM for an application is critical to maintaining  
Customer Satisfaction and should be taken seriously. Certain models are  
better suited for particular applications and environments than others.  
35  
 
APPENDIX C  
1080ARC FACTORY REPLACEMENT PARTS  
The Patton Model 1080ARC rack system features interchangeable rear  
cards, power cords/fuses for international various operating environ-  
ments 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  
120/240V Front Power Supply Module  
DC Rear Power Entry Module  
1000RPSM-1  
1000RPEM-DC  
1000RPSM-48A 48V Front Power Supply Module  
0805US  
0805EUR  
0805EURP  
0805UK  
0805AUS  
0805DEN  
0805FR  
0805IN  
American Power Cord  
European Power Cord CEE 7  
Europlug Power Cord CEE 7/16  
United Kingdom Power Cord  
Australia/New Zealand Power Cord  
Denmark Power Cord  
France/Belgium Power Cord  
India Power Cord  
0805IS  
Israel Power Cord  
0805JAP  
0805SW  
Japan Power Cord  
Switzerland Power Cord  
0516FPB1  
0516FPB4  
0516RPB1  
0516RPB4  
Single Width Blank Front Panel  
4-Wide Blank Front Panel  
Single Width Blank Rear Panel  
4-Wide Blank Rear Panel  
056S1  
Set of 16 #4 pan head screws/washers  
36  
 
 
APPENDIX D  
1080ARC INTERFACE STANDARDS  
DIRECTION  
STANDARD RS-232C/V.24 DCE SETTING  
DIRECTION  
1 - (FG) Frame Ground  
From 1080ARC Transmit Clock - 15  
2 - (TD) Transmit Data  
3 - (RD) Receive Data  
To 1080ARC  
From 1080ARC  
From 1080ARC  
To 1080ARC  
Receive Clock - 17  
Analog Loop - 18  
4 - (RTS) Request to Send To 1080ARC  
5 - (CTS) Clear to Send From 1080ARC  
6 - (DSR) Data Set Ready From 1080ARC  
7 - (SG) Signal Ground  
To 1080ARC  
To 1080ARC  
Data Term. Ready  
(DTR) - 20  
Digital Loop - 21  
8 - (DCD) Data Carrier  
Detect  
From 1080ARC  
To 1080ARC  
External Clock - 24  
Test Mode - 25  
From 1080ARC  
37  
 
 
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39  
 
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Copyright © 2001  
Patton Electronics Company  
All Rights Reserved.  
40  
 

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