Fibre Optic System
RF Parameters :
Laser Diode : Lasertron, part No. QLM3S860SPEC
| Modulation Bandwidth | 60KHz - 1GHz |
| Frequency Response | +/- 2.0 dB |
| Input Impedance | 50 Ohm |
| Input 1dB compression point [Measured with 32MHz wide , noise sourcecenterd at 70MHz] |
> +10 dBm |
| Input 3rd order intercept point | > +18 dBm |
| Equivalent input noise | <= -135 dBm |
DC Parameters :
| Slope Efficiency [slope of Power Vs Current curve] | >= 0.04mW/mA |
| Optical Output Power | >= 0.5mW |
| Peak Optical Wavelength | 1300 +- 10 nm |
| Spectral Width (rms) | <1.5 nm |
| Maximum DC power Requirement | +5V @ 1 A [Tamb = 65 deg.C] -5 V @ 80 mA [Tamb = 25deg. C] +12V @ 80 mA |
Specification of Optical Receiver
RF Parameters:
Photo Diode : Epitax make, part No ; ETX75FJ-SLR
| Modulation Bandwidth | 7MHz - 870 MHz (min) |
| Frequency Response | +-2.0 dB |
| Input Impedance | 50 Ohm |
DC Parameters :
| Responsivity | >= 0.8 mA/mW |
| Operating Wavelength | 1100 - 1600 nm |
| Optical Return Loss | > 45 dB |
| Maximum DC Power Requirement | +12V @ 90 mA |
CENTRAL SQUARE OPTICAL FIBER CABLE
* Orange , Blue , Red and Green indicates the color of the fiber in the cable.
* Average Optical Loss in dB and distance in Kms measured on Tektronics make OTDR from both the ends.
1) Cable No. 1 - 12 Core optical fiber cable to C00, C01, C08 and C12 antennae
2) Cable No. 2 - 14 Core optical fiber cable to C02, C05, C06 AND C09 antennae
3) Cable No. 3 - 06 Core optical fiber cable to C03 and C04 antennae
4) Cable No. 4 - 08 Core optical fiber cable to C10, C11, C14 and C13 antennae.
|
ANTENNA |
CABLE |
BRANCH |
SLOT NO |
CABLE COLOR CODE |
|
CS- CENTRAL |
1 TO 4 |
0 TO 6 |
1 TO 6
|
1 ORANGE
2 BLUE 3 RED 4 GREEN
|
DISTANCE AND LOSS DETAILS
|
ANTENNA |
CABLE NO |
DISTANCE |
AVG. OPT. LOSS in dB. |
TOTAL NO. OF FIELD JOINT |
|
C00 OTX |
CS1031 |
1.36 |
0.57 |
0 |
|
C00 ORX |
CS1032 |
1.372 |
0.57 |
0 |
|
C01 OTX |
CS1021 |
0.910 |
0.32 |
0 |
|
C01 ORX |
CS1012 |
0.913 |
0.22 |
0 |
|
C08 OTX |
CS1051 |
1.322 |
0.64 |
0 |
|
C08 ORX |
CS1042 |
1.322 |
0.51 |
0 |
|
C12 OTX |
CS1061 |
1.750 |
0.67 |
0 |
|
C12 ORX |
CS1062 |
1.745 |
0.66 |
0 |
|
C00 SPARE |
CS1011 |
1.362 |
0.57 |
0 |
|
C00 SPARE |
CS1022 |
1.362 |
0.58 |
0 |
|
C12 SPARE |
CS1041 |
1.745 |
0.66 |
0 |
|
C12 SPARE |
CS1052 |
1.745 |
0.67 |
|
C02 OTX |
CS2011 |
0.629 |
0.33 |
1 |
|
C02 ORX |
CS2012 |
0.627 |
0.33 |
1 |
|
C02 SPARE |
CS2013 |
0.627 |
0.34 |
1 |
|
C02 SPARE |
CS2014 |
0.629 |
0.33 |
1 |
|
C02 SPARE |
CS2021 |
0.629 |
BAD |
1 |
|
C02 SPARE |
CS2022 |
0.629 |
BAD |
1 |
|
C09 OTX |
CS2023 |
0.859 |
0.59 |
2 |
|
C09 ORX |
CS2024 |
0.859 |
0.44 |
2 |
|
C09 SPARE |
CS2042 |
0.859 |
0.44 |
2 |
|
C05 OTX |
CS2031 |
0.977 |
0.51 |
2 |
|
C05 ORX |
CS2032 |
0.982 |
0.66 |
2 |
|
C06 OTX |
CS2033 |
1.169 |
0.43 |
2 |
|
C06 ORX |
CS2034 |
1.168 |
0.48 |
2 |
|
C06 SPARE |
CS2041 |
1.168 |
0.50 |
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
C03 OTX |
CS3011 |
0.709 |
0.26 |
0 |
|
C03 ORX |
CS3012 |
0.709 |
0.38 |
0 |
|
C04 ORX |
CS3021 |
0.973 |
0.38 |
0 |
|
C04 ORX |
CS3022 |
0.961 |
0.38 |
0 |
|
C04 SPARE |
CS3031 |
0.961 |
0.40 |
0 |
|
C04 SPARE |
CS3032 |
0.961 |
0.40 |
0 |
|
|
|
|
|
|
|
C10 OTX |
CS4011 |
1.332 |
0.70 |
1 |
|
C10 ORX |
CS4012 |
1.337 |
0.45 |
1 |
|
C11 OTX |
CS4021 |
1.234 |
0.59 |
1 |
|
C11 ORX |
CS4022 |
1.224 |
0.46 |
1 |
|
C14 OTX |
CS4031 |
1.345 |
0.48 |
1 |
|
C14 ORX |
CS4032 |
1.321 |
0.61 |
1 |
|
C13 ORX |
CS4041 |
1.954 |
0.73 |
1 |
|
C13 ORX |
CS4042 |
1.954 |
0.75 |
1 |
DATA BY : PRAVIN RAYBOLE
1) Cable No. 1 - 12 Core optical fiber cable to C00, C01, C08 and C12 antennae
CABLE LAYOUT -
CEB C01 BASE C08 BASE C12 BASE
()-----------------[ ]----------------------------()--------------------------()
12 FIBER | 6 FIBER 4 FIBER
|
|
|
| 4 FIBER
|
() C00BASE
|
Date |
14/11/96 |
13/11/96 |
17/11/96 |
20/11/96 |
25/11/96 |
|
FJ / SP No. & PLACE |
CEB |
C01 BASE |
C00 BASE |
C08 BASE |
C12 BASE |
|
DISTANCE |
0.00 |
0.913 |
1.362 |
1.322 |
1.750 |
|
Cable Core |
12 |
12 + 6 + 4 |
4 |
6 |
6 |
|
ANTENNA |
CABLE NO |
CABLE NO |
CABLE NO |
CABLE NO |
CABLE NO |
|
C01 OTX |
CS1021 |
CS1021 |
|
|
|
|
C01 ORX |
CS1012 |
CS1012 |
|
|
|
|
C00 SPARE |
CS1011 |
CS1112 |
CS1112 |
|
|
|
C00 SPARE |
CS1022 |
CS1122 |
CS1122 |
|
|
|
C00 OTX |
CS1031 |
CS1111 |
CS1111 |
|
|
|
C00 ORX |
CS1032 |
CS1121 |
CS1121 |
|
|
|
C08OTX |
CS1051 |
CS1211 |
|
CS1211 |
|
|
C08 ORX |
CS1042 |
CS1212 |
|
CS1212 |
|
|
C12 OTX |
CS1061 |
CS1231 |
|
CS1331 |
CS1431 |
|
C12 ORX |
CS1062 |
CS1222 |
|
CS1322 |
CS1422 |
|
C12 SPARE |
CS1052 |
CS1232 |
|
CS1332 |
CS1432 |
|
C12 SPARE |
CS1041 |
CS1221 |
|
CS1321 |
CS1421 |
2) Cable No. 2 - 14 Core optical fiber cable to C02, C05, C06 & C09 antennae
CABLE LAYOUT -
CEB FJ1 C02 BASE
()-----------------------[ ]----------------------()
14 FIBER | 4 FIBER
|
|
| 8 FIBER
|
| C09 BASE
FJ2 [ ]-----------------------------()
| 4 FIBER
|
| 6 FIBER
|
() C05 BASE
|
|
| 4 FIBER
|
() C06 BASE
Date |
21/11/96 |
27/11/96 |
26/11/96 |
30/11/96 |
29/11/96 |
3/12/96 |
4/12/96 |
|
FJ / SP No. |
CEB |
FJ1 |
C02 BASE |
FJ2 |
C09 BASE |
C05 BASE |
C06 BASE |
|
Distance in Kms |
0.00 |
0.588 |
0.629 |
0. |
0.859 |
0.977 |
1.169 |
|
Cable core |
14 |
4+ 8 |
4 |
8 + 4 + 6 |
4 |
6 + 4 |
4 |
|
ANTENNA |
CABLE NO. |
CABLE NO. |
CABLE NO. |
CABLE NO. |
CABLE NO. |
CABLE NO. |
CABLE NO. |
|
C02 OTX |
CS2021 |
CS2111 |
CS2111 |
|
|
|
|
|
C02 ORX |
CS2012 |
CS2112 |
CS2112 |
|
|
|
|
|
C02 SPARE |
CS2013 |
CS2121 |
CS2121 |
|
|
|
|
|
C02 SPARE |
CS2014 |
CS2122 |
CS2122 |
|
|
|
|
|
C02 SPARE |
CS2021 |
BAD |
|
|
|
|
|
|
C02 SPARE |
CS2022 |
BAD |
|
|
|
|
|
|
C09 OTX |
CS2023 |
CS2241 |
|
CS2321 |
CS2321 |
|
|
|
C09 ORX |
CS2024 |
CS2211 |
|
CS2311 |
CS2311 |
|
|
|
C09 SPARE |
CS2042 |
CS2212 |
|
CS2312 |
CS2312 |
|
|
|
C05 OTX |
CS2031 |
CS2221 |
|
CS2411 |
|
CS2411 |
|
|
C05 ORX |
CS2032 |
CS2222 |
|
CS2412 |
|
CS2412 |
|
|
C06 OTX |
CS2033 |
CS2231 |
|
CS2421 |
|
CS2421 |
CS2511 |
|
C06 ORX |
CS2034 |
CS2232 |
|
CS2422 |
|
CS2422 |
CS2512 |
|
C06 SPARE |
CS2041 |
CS2242 |
|
CS2431 |
|
CS2431 |
CS2521 |
3) Cable No. 3 - 06 Core optical fiber cable to C03 and C04 antennae
CABLE LAYOUT
CEB C03 BASE C04 BASE
()--------------------------()---------------------------()
6 FIBER 4 FIBER
|
Date |
31/12/96 |
|
7/12/96 |
|
FJ and Sp No. |
CEB |
C03 BASE |
C04 BASE |
|
Distance in Kms |
0.00 |
0.709 |
0.961 |
|
Cable Core |
6 |
6 |
4 |
|
ANTENNA |
CABLE NO. |
CABLE NO. |
CABLE NO. |
|
C03 OTX |
CS3011 |
CS3011 |
|
|
C03 ORX |
CS3031 |
CS3031 |
|
|
C04 OTX |
CS3021 |
CS3021 |
CS3111 |
|
C04 ORX |
CS3022 |
CS3022 |
CS3112 |
|
SPARE |
CS3012 |
CS3012 |
|
|
SPARE |
CS3032 |
CS3032 |
|
4) Cable No. 4 - 08 Core optical fiber cable to C10, C11, C14 and C13 antennae.
CABLE LAYOUT
() C10 BASE
|
| 4 FIBER
|
CEB FJ1 | C14 BASE C13 BASE
()------------------------[ ]-------------------------------()-----------------------()
8 FIBER | 6 FIBER 4 FIBER
|
| 4 FIBER
|
() C11 BASE
|
Date |
|
|
|
05/02/98 |
05/02/98 |
06/02/98 |
|
FJ / SP No. |
CEB |
FJ1 |
C10 BASE |
C11 BASE |
C14 BASE |
C13 BASE |
|
Distance in Kms. |
0.0 |
|
1.332 |
1.234 |
1.345 |
1.954 |
|
Cable Core |
8 |
8 + 6 + 4 + 4 |
4 |
4 |
6 + 4 |
4 |
|
ANTENNA |
CABLE NO. |
CABLE NO. |
CABLE NO. |
CABLE NO. |
CABLE NO. |
CABLE NO. |
|
C10 OTX |
CS4011 |
CS4111 |
CS4111 |
|
|
|
|
C10 ORX |
CS4012 |
CS4112 |
CS4112 |
|
|
|
|
C11 OTX |
CS4021 |
CS4121 |
|
CS4221 |
|
|
|
C11 ORX |
CS4022 |
CS4122 |
|
CS4222 |
|
|
|
C14 OTX |
CS4031 |
CS4131 |
|
|
CS4331 |
|
|
C14 ORX |
CS4032 |
CS4132 |
|
|
CS4332 |
|
|
C13 OTX |
CS4041 |
CS4141 |
|
|
CS4341 |
CS4441 |
|
C13 ORX |
CS4042 |
CS4142 |
|
|
CS4342 |
CS4442 |
DATA BY : PRAVIN RAYBOLE
Last updated: 09/12/2007 11:49:14