Black Box Network Router 39004 User Manual

MARCH 2000  
39004  
39005  
T1 Fiber Optic Line Extender/Simulator  
FO  
RX  
TX  
TX  
RX  
FO/S  
C
I/F  
DL  
LOOP  
LL  
CUSTOMER  
SUPPORT  
INFORMATION  
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX  
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746  
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018  
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
NORMAS OFICIALES MEXICANAS (NOM)  
ELECTRICAL SAFETY STATEMENT  
INSTRUCCIONES DE SEGURIDAD  
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de  
que el aparato eléctrico sea operado.  
2. Las instrucciones de seguridad y operación deberán ser guardadas para  
referencia futura.  
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de  
operación deben ser respetadas.  
4. Todas las instrucciones de operación y uso deben ser seguidas.  
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca  
de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..  
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que  
sean recomendados por el fabricante.  
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea  
recomendado por el fabricante.  
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá  
a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser  
referido a personal de servicio calificado.  
9. El aparato eléctrico debe ser situado de tal manera que su posición no  
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,  
alfombra o superficie similar puede bloquea la ventilación, no se debe colocar  
en libreros o gabinetes que impidan el flujo de aire por los orificios de  
ventilación.  
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor  
como radiadores, registros de calor, estufas u otros aparatos (incluyendo  
amplificadores) que producen calor.  
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del  
tipo descrito en el instructivo de operación, o como se indique en el aparato.  
2
 
NOM STATEMENT  
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización  
del equipo no sea eliminada.  
13. Los cables de la fuente de poder deben ser guiados de tal manera que no  
sean pisados ni pellizcados por objetos colocados sobre o contra ellos,  
poniendo particular atención a los contactos y receptáculos donde salen del  
aparato.  
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las  
recomendaciones del fabricante.  
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas  
de energia.  
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea  
usado por un largo periodo de tiempo.  
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean  
derramados sobre la cubierta u orificios de ventilación.  
18. Servicio por personal calificado deberá ser provisto cuando:  
A: El cable de poder o el contacto ha sido dañado; u  
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o  
C: El aparato ha sido expuesto a la lluvia; o  
D: El aparato parece no operar normalmente o muestra un cambio en su  
desempeño; o  
E: El aparato ha sido tirado o su cubierta ha sido dañada.  
3
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
General Safety Precautions  
Transport, Installation, and Operation  
• Avoid excessive vibration and shocks.  
• Avoid contact with water and dust.  
• Avoid excessive direct sunlight.  
• Ensure sufficient cooling.  
• Prevent loose items from falling into the device.  
Fiber Optics  
• Looking into the fiber optic output can cause injury to the eyes. When  
observation is necessary, avoid exceeding the limits recommended in ANSI  
Z136.1-1981.  
Mains Power  
• Disconnect the power cord before opening the device.  
• Use exclusively the included power supply with an approved power cord.  
• The power plug must be plugged into a properly grounded receptacle. An  
improperly wired receptacle could place hazardous voltage on accessible metal  
parts of the device.  
• The mains supply must match the Simulator’s power specification.  
• Replace blown fuses with fuses of the exact type and rating.  
• Do not work on the equipment during periods of lightning activity.  
4
 
TRADEMARKS  
TRADEMARKS USED IN THIS MANUAL  
®
ST is a registered trademark of American Telephone and Telegraph Company.  
Any trademarks mentioned in this manual are acknowledged to be the property of  
the trademark owners.  
5
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
Contents  
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
2.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
2.2 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
2.3 Typical Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
3. Connectors, Indicators, and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
4. Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
5. Data Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Appendix: Fiber Optic Planning Guidelines . . . . . . . . . . . . . . . . . . . . . . . . 16  
A.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
A.2 Fiber Optic Calculation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
A.3 Operation Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
6
 
CHAPTER 1: Specifications  
1. Specifications  
Maximum Distance—39004: 3 mi. (4.8 km) @ 16 dB; 39005: 24 mi. (38.6 km) @  
16 dB  
Speed—1.544 Mbps  
®
Interface—DTE: T1, G.703/DS1; Fiber: Dual ST multimode or single-mode  
Connectors—DB15 for DTE, dual ST for fiber  
Indicators and Buttons—(6) LEDs: TX, RX, FO/S, C, LL, DL; (1) Loop  
mode button  
Optical*—Standard: 1300-nm SM LED; Pulse width: 648 ns; Transmitter output  
power: -13 or -18 dBm**; Pairs optical power budget: 9/125 µm, 18 dB;  
Receiver operation range: -15 through -31 dBm  
G.703—Transmit level: 15.7 dBm; Maximum attenuation: 6 dB; Line impedance:  
100 or 120 **  
Temperature Tolerance—Operating: 41 to 104°F (5 to 40°C); Storage: -22 to  
+176°F (-30 to +80°C)  
Humidity—10 to 90% noncondensing  
Power—115-VAC external power supply, 60 Hz, 12 W  
Size—1.5"H x 5.8"W x 8.8"D (3.8 x 14.7 x 22.4 cm)  
Weight—3.3 lb. (1.5 kg)  
*Optical specifications are valid at 77°F (25°C).  
**Depends on setup.  
7
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
2. Introduction  
2.1 Description  
The T1 Fiber Optic Line Extender/Simulator lets you combine fiber optic  
technology with standard interfaces at 1.544 Mbps. The advantages are increased  
transmission distances and immunity to electrical interference. Connections  
between buildings become possible since no lightning currents can arise.  
2.2 Features  
• Extend or interconnect T1 lines, PBXs, or T1 muxes across distances up to  
3 miles (4.8 km) via a pair of these devices.  
• For line simulation, the device is transparent to equipment, framing, and  
encoding—PBXs and multiplexors act like they’re directly connected to a T1  
circuit.  
• EMI/RFI and lightning-hazard immunity is provided by the fiber link.  
2.3 Typical Application  
T1 Fiber Optic Line  
Extender/Simulator  
T1 Fiber Optic Line  
Extender/Simulator  
8
 
CHAPTER 3: Connectors, Indicators, and Controls  
3. Connectors, Indicators, and  
Controls  
10  
9
1
TX RX  
FO  
I/F  
FO/S  
C
RX  
TX  
LL DL  
LOOP  
4
3
5
6
7
8
2
A
Figure 3-1. Front and Rear Panels.  
Table 3-1. Connectors, Indicators, and Controls  
No.  
Connector, Indicator, or Control  
1
2
3
4
5
6
7
8
9
10  
TX LED: Transmitting binary 0 via fiber optic  
G.703 connector  
FO/S LED: Power/FO Link/sync  
LL LED: Unit in line loop mode*  
DL LED: Unit in digital loop mode*  
Loop mode button  
ST connector for fiber optic receiver  
ST connector for fiber optic transmitter  
C LED: G.703 signal present  
RX LED: Receiving binary 0 via fiber optic  
A
Power connector  
*Both LEDs lit: Unit is in remote loop mode.  
9
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
4. Setup  
Main board  
Figure 4-1. Location of Jumpers on the Printed Circuit Board.  
10  
 
CHAPTER 4: Setup  
Table 4-1. Key, Jumper, and Switch Settings  
Number Setting  
Description  
1
Loop Mode Key: Press the key switches through the  
following operating modes: Normal operation, Digital  
loop, Remote loop. The unit enters loop mode when the  
distant modem gets switched to remote loop.  
2
3
Clock Source  
Internal  
Remote  
External  
Interface Speed  
Position D  
1.544 kbps  
1544  
All other settings are not applicable.  
4
5
Processor Connector  
Not used. Do not install any jumpers!  
6
7
For factory use only. Do not install any jumpers!  
Fiber Optic Output Power  
Low  
High  
11  
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
Table 4-1 (continued). Key, Jumper, and Switch Settings  
Number Setting  
Description  
8
Sample mode for incoming intermediate frequency (I/F) data  
Data sampled on positive clock edge (std.)  
Data sampled on negative clock edge  
9
Interface Mode  
NT (Network Termination)  
TE (Terminal Equipment)  
10  
11  
Interface Pin 1 Potential  
Floating  
Connected to frame ground  
Transmission Mode  
Switch setting is mandatory.  
Switches 1, 2, and 4 must be in OFF position.  
Switch 3 must be in ON position.  
12  
Test connector. Do not install any jumpers!  
Table 4-2. Fiber Optic Signal (FO/S) LED  
FO/S LED  
Meaning  
Off  
No power supplied.  
Slow Flash (1.5/s)  
Fast flash (5/s)  
On  
No fiber optic link established.  
Fiber optic link OK but no clock sync.  
Fiber optic link OK and clock sync OK.  
12  
 
CHAPTER 4: Setup  
Clock Mode Comments:  
• Internal: The clock is generated by the internal clock generator.  
• External: The clock is provided by the local equipment.  
• Remote: The local modem receives the clock via the link from the distant  
modem. The distant modem must be set to Internal or External.  
Figure 4-2. Possible Synchronous Clock Configurations.  
13  
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
5. Data Signals  
Local fiber optic modem  
in normal mode  
Distant fiber optic modem  
Figure 5-1. Data Signals at Normal Mode.  
Local fiber optic modem  
in digital loop mode  
Distant fiber optic modem  
Figure 5-2. Data Signals at Digital Loop Mode.  
14  
 
CHAPTER 5: Data Signals  
Local fiber optic modem switched  
to remote loop mode  
Fiber optic modem forced to loop  
mode by other modem  
Figure 5-3. Data Signals at Remote Loop/Line Loop Mode.  
Table 5-1. G.703 Pinout (Female)  
Pin  
Signal  
Terminal End  
Network Termination  
2
4
R A  
T A  
R B  
T B  
Input  
Output  
Input  
Output  
Input  
9
Output  
Input  
11  
Output  
Figure 5-4. G.703 Connector.  
15  
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
Appendix: Fiber Optic Planning  
Guidelines  
A.1 Introduction  
Designing a fiber optic link means considering two main physical limitations:  
System attenuation and fiber optic dispersion.  
Attenuation results when properties of the fiber optic link reduce the intensity of  
the fiber optic signals. Dispersion occurs in high-speed links and causes  
degradation of fiber optic signals, disabling the receiver that would interpret them  
correctly.  
The analysis of the planned fiber optic link is a two-step process. First, you must  
calculate the attenuation of the complete system to ensure that the units can cope  
with the losses of the link. Then, you must enter the intended distance between the  
units into the operation diagram (see Figure A-2). (Make sure the distance is  
confirmed by the calculation above.) These calculations are explained in  
Section A.2.  
When you calculate the maximum range, keep in mind that extremely short  
cabling can be problematic, too. Avoid receiver overload conditions for proper  
data transmission.  
For wavelength/multiplexing (WDM) equipped units, you must perform the  
calculations for each wavelength independently (twice total). You must operate the  
WDM-equipped counterparts within the restrictions defined by both resulting  
operation diagrams.  
Please observe that the optical power budget stated in the documentation of a  
WDM-equipped unit is valid for the transmitted wavelength only. The optical  
power budget for the received wavelength can be found in the documentation of  
the counterpart unit.  
16  
 
APPENDIX: Fiber Optic Planning Guidelines  
A.2 Fiber Optic Calculation  
STEP 1: ATTENUATION CONSIDERATIONS  
Figure A-1 shows the various elements of the fiber optic link that decrease light  
intensity. Depending on the real installation, you must subtract a series of  
attenuation (att.) values from the raw optic output level of the fiber optic  
transmitter. The remainder of the originally transmitted light at the receiver must  
be at least as high as the minimum receiver sensitivity. Generally, you should  
project a link margin of at least 3 dB to allow aging and fiber repairs.  
Use the formulas described below to calculate the attenuation values for your  
system:  
• (optical power budget)=(max. of transmitter output power) - (min. of receiver  
operation range) The stated optical power budget does not include irregular  
light propagation modes. At short distances, these modes increase the optical  
power at the receiver. The increase depends mainly on fiber optic mode and  
cable quality. Consider the irregular light propagation modes at multimode  
only and add about 3 dB. This amount is included in the stated multimode  
transmitter output values.  
• (total system att.)=sum of all discrete attenuations (as shown in Figure A-1).  
This value is the attenuation of the link due to the link components.  
• (cable length)=(cable attenuation)/(cable att. factor). This formula is used to  
calculate cable length or resulting attenuation. The cable att. factor is provided  
by the cable producer.  
Example values for calculations below (See Figure A-1):  
Fiber optic power budget of the combination unit [1]/unit [7]=17 dB. Cable att.  
factor of cables [2], [4], and [6]=3 dB/km. Cable [4]=1 km. Cable [6]=2 km.  
Splice [5] loss 1 dB.  
Connector loss at patch panel [3]=2 dB.  
Example 1: Maximum length of cable [2]:  
(cable [4] att.)= 1 km*3 dB/km=3 dB (cable [6] att.)=2 km*3 dB/km=6 dB.  
(right part att.)=(Conn. loss [3]) + (cable [4] att.) + (splice [5] loss) + (cable [6]  
att.)  
(right part att.)= 2 dB + 3 dB + 1 dB +6 dB=12 dB.  
17  
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
(max, cable [2] att.)=(fiber optic power budge) - (right part att.) = 17 dB - 12 dB =  
5 dB.  
(max. cable [2] length) = (max.cable [2] att.)/(cable [2] att. factor) =  
5 dB/3 dB/km = 5.6 km  
Example 2: Maximum length of cable [2] when connected directly (without  
splices, etc.): (max. cable [2] length) = (fiber optic power budget)/(cable [2] att.  
factor) = 17 dB/3 dB/km = 5.6 km  
Example 3: Minimum cable quality to bridge 5 km (single cable without splices or  
patches): (cable att. factor) = (cable att.)/(cable length) = 17 dB (fiber optic power  
budget)/5 km = 3.4 dB/km  
T1 Fiber Optic Line  
Extender/Simulator  
1
2
4
T1 Fiber Optic Line  
Extender/Simulator  
3
5
7
1
6
3
2
5
4
6
7
Figure A-1. Attenuation diagram.  
18  
 
APPENDIX: Fiber Optic Planning Guidelines  
STEP 2: OVERALL OPERATION CONSIDERATIONS  
The operation diagram (Figure A-2) shows one example diagram and one blank  
diagram to be completed based on real values:  
1. Draw horizontal lines at the min. and max. value of the fiber optic pulse  
width* of the affected units.  
2. Calculate the maximum total distance based on the calculations above and  
draw a vertical line.  
3. Choose the correct dispersion line** based on fiber optic transmitter type*.  
4. Shade the allowed operation range as shown in Figure A-2.  
*To be found in the technical data section of the units’ documentation.  
**Industry-standard cable quality assumed: 18 ps/(nm*km) @ 1550 nm.  
A.3 Operation Diagram  
Example: Physical operation restrictions for a unit with 1550-nm standard laser, a  
fiber optic pulse width between 10 and 100 ns and a calculated maximum distance  
between the units of 60 km.  
The operation you choose must be inside the allowed (shaded) area.  
NOTE  
The right border of the operation area is defined by the dispersion or  
distance line, whichever comes first (leftmost). Some units use only one  
discrete fiber optic pulse width. In this case, the allowed operation area  
collapses to a horizontal line. If there is no dispersion line for the used  
fiber optic transmitter type, dispersion can be ignored.  
19  
 
T1 FIBER OPTIC LINE EXTENDER/SIMULATOR  
Figure A-2. Operation Diagram  
20  
 
APPENDIX: Fiber Optic Planning Guidelines  
Use the example on the previous page as a reference when filling in  
information for your application below.  
Figure A-3. Your Application.  
21  
 
© Copyright 2000. Black Box Corporation. All rights reserved.  
1000 Park Drive  
Lawrence, PA 15055-1018  
724-746-5500  
Fax 724-746-0746  
 

Bertazzoni Ventilation Hood K36 CON X 01 User Manual
Black Decker Toaster TRO18 User Manual
Blodgett Oven MT2136E G User Manual
Briggs Stratton Portable Generator 040213 User Manual
Briggs Stratton Snowshoes 222400 User Manual
Bryan Boilers Boiler Tube Steel Boilers User Manual
Campbell Hausfeld Impact Driver PN0090 User Manual
Casio Digital Camera EX Z330 User Manual
Centro Gas Grill 4000AS User Manual
Christie Digital Systems Projector LW25U User Manual