Model GS7000 Optical Hub Data Sheet
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As operators migrate to architectures with deeper fiber reach, there is an increased need for flexible design options and efficient fiber utilization in the optical network. The Model GS7000 Optical Hub addresses those needs by providing multiple options for optical amplification, filtering, splitting, and combining, all in a field-proven Model GS7000 station.
Model GS7000 Optical Hub
The Model GS7000 Optical Hub employs a modular approach, allowing full configuration flexibility combined with simple component installation and removal. The Model GS7000 active optical modules include a variety of low-noise EDFA optical amplifiers for both broadcast and narrowcast applications, as well as optical switches that enable redundancy.
The Model GS7000 passive optical modules include single-function modules such as CWDM and DWDM 1x8 mux/demux’s, two and four band mux/demux’s, and a variety of optical splitters. Multi-function passive modules are also available, including combiners with integrated multiplexers and demultiplexers for narrowcast/broadcast overlays. The passive optical modules with higher input/output fiber counts make use of a multi-fiber ribbon cable which simplifies internal fiber routing and connectivity.
A fully configured Model GS7000 Optical Hub can combine narrowcast/broadcast using up to 64 wavelengths, providing forward and reverse optical paths for a total of 32 nodes. The station utilizes the same field-proven housing and dual internal power supplies as the widely deployed Model GS7000 4-Port Node.
● EDFA modules for optical amplification
● Optical switch modules for redundancy
● Flexible and scalable optical passive modules
● Fiber management tray and tracks provide easy fiber routing and access to fiber connections
● Status monitor/Local control module for remote monitoring and control (Transmission Network Control System [TNCS] or other compatible element management system required)
● Fiber entry ports on both ends of housing lid
● AC power entry ports on both ends of the housing base
● Primary and redundant power supplies with passive load sharing
● Dual/Split AC powering
● Eliminates building costs and permitting issues for new “brick and mortar” hub locations.
● Reduces the need for new fiber installation.
● Fiber management and fiber coupling (mux/demux, etc.) are typically done at the headend or hub, or within strand-mounted splice enclosures. This can now be done with the Model GS7000 Optical Hub.
● All passive devices are enclosed within the housing. No need for external splice enclosures.
● Optical amplification is typically done at the headend or hub, or with strand-mounted optical amplifiers. This can now be done with the Model GS7000 Optical Hub.
● The ability to add redundancy, or enable network switching for survivability is typically done at the headend or hub. This can now be done with the Model GS7000 Optical Hub.
Broadcast/Narrowcast Overlay with Redundancy
Broadcast/Narrowcast Overlay with Two Broadcast Zones
Model GS7000 Optical Hub Station
Table 1. General Station Specifications
| Environmental |
Units |
Value |
| Temperature Range |
°C °F |
-40 to + 60 -40 to + 140 |
| Humidity Range (4) |
% |
5 to 95 |
| Mechanical |
||
| Dimensions |
in. cm |
21.3 x 11.6 x 11.1 54.1 x 29.5 x 28.2 |
| Weight (fully loaded) |
lb kg |
50 22.7 |
Model GS7000 Active Optical Modules
Table 2. EDFA Optical Amplifier Specifications
| Optical |
Units |
Broadcast EDFA |
Narrowcast Gain Flattened EDFA |
|||||
| 17 dBm |
20 dBm |
22 dBm |
17 dBm |
21 dBm |
||||
| dBm |
17 |
20 |
22 |
17 |
21 |
|||
| Gain |
dB |
12 |
15 |
17 |
Low |
High |
Low |
High |
| 7 |
12 |
11 |
16 |
|||||
| Input Power |
dBm |
0 to +10 |
-8 to +10 |
-13 to +5 |
-8 to +10 |
-15 to +5 |
||
| Input Wavelength |
nm |
1530 - 1565 |
1528 - 1562 |
|||||
| Output Power Stability |
dB |
± 0.3 |
± 0.4 |
|||||
| Return Loss |
dB |
≥ 50 |
≥ 50 |
|||||
| Polarization Sensitivity |
dB |
± 0.15 |
± 0.15 |
|||||
| Noise Figure |
dB |
5.5 |
7.0 |
|||||
| Output Power Variation with Wavelength |
dB |
±0.2 |
N/A |
|||||
| Gain Flatness (note 2) |
dB |
N/A |
± 0.75 over |
|||||
| Optical Interfaces |
- |
SC/APC (2) |
SC/APC (2) |
|||||
| Electrical |
Unit |
EDFA |
Gain Flattened EDFA |
|||||
| Power Consumption |
W |
4.5 |
7 |
9 |
4.5 |
9 |
||
| Mechanical |
||||||||
| Length x Height x Width |
in. cm |
5.8 x 3.8 x 1.5 14.7 x 9.7 x 3.8 |
||||||
Notes:
1. The output power is measured after a typical jumper loss of 0.2 dB is accounted.
2. Gain flatness for the default gain conditions.
3. Non-condensing external to the Node enclosure.
Model GS7000 Active Optical Modules
Table 3. Optical Switch Specifications
| Optical |
Units |
Value |
Notes |
| Nominal Optical Wavelength |
nm |
1550 (±20) |
|
| Input Optical Power Range |
dBm |
-10 to +14 |
1 |
| Insertion Loss |
dB |
≤ 2.0 |
2 |
| Inputs (1 each) |
- |
Primary Secondary Common |
|
| Output |
- |
Common |
|
| Cross Talk |
dB |
≥ 55 |
|
| Return Loss |
dB |
≥ 50 |
3 |
| Optical Interfaces |
|
SC/APC (3) |
|
| Electrical |
|||
| Sense and Switch Time (from Primary to Redundant state) |
ms |
< 50 |
|
| Power Consumption @ 24 VDC (maximum) |
W |
3 |
|
| Switching Threshold |
dB |
-10 to +14 (user changeable) |
|
| Restore Threshold |
dB |
0.5 to 9.5 |
|
| Wait Time before Restoration |
minutes |
0 to 10 in 1 second steps |
|
| Mechanical |
|||
| Length |
in. cm |
5.8 14.7 |
|
| Width |
in. cm |
1.5 3.8 |
|
| Height |
in. cm |
3.8 9.7 |
|
| Weight |
lb kg |
.72 .33 |
|
Notes:
1. Optical input power of -3.0 dBm or greater is required to maintain the full user-settable threshold range. When the optical input power is less than -3.0 dBm there is a 1-for-1 reduction in threshold range.
2. Insertion loss of module with 0.25 dB loss per mated connector pair for a total connector loss of 0.5 dB. Actual connection loss may be less or more depending on mating connector compatibility.
3. With APC connectors.
Model GS7000 Passive Optical Modules
Table 4. BWDM2 Two Band (Red/Blue) Filter Specifications
| Parameter |
Units |
Value |
Part Number |
|
| Passband Wavelengths |
Port 2135 |
nm |
1548.5 - 1561.5 Red |
4030111 |
| Port 4559 |
1529.5 - 1542.5 Blue |
|||
| ITU Channels |
Port 2135 |
ITU Channels |
21-35 |
|
| Port 4559 |
45-59 |
|||
| Insertion Loss (see note) |
Port 2135 |
dB |
≤ 0.8 |
|
| Port 4559 |
≤ 1.1 |
|||
| Isolation |
Port 2135 |
dB |
≥ 12 |
|
| Port 4559 |
≥ 15 |
|||
| Directivity |
dB |
≥ 50 |
||
| Optical Return Loss |
≥ 45 |
|||
| Optical Interfaces |
|
SC/APC (3) |
||
| Package |
|
1 Wide Module |
||
Note: Insertion loss includes input and output connector loss.
BWDM2 Filter
Model GS7000 Passive Optical Modules
Table 5. BWDM4 Four Band Filter Specifications
| Parameter |
Units |
Value |
Part Number |
|
| Passband Wavelengths |
Port 2027 |
nm |
1555.63 - 1561.54 |
4030110 |
| Port 2835 |
1549.20 - 1555.06 |
|||
| Port 3643 |
1542.82 - 1548.63 |
|||
| Port 4451 |
1536.49 - 1542.26 |
|||
| ITU Ch’s |
Port 2027 |
- |
20 - 27 |
|
| Port 2835 |
28 - 35 |
|||
| Port 3643 |
36 - 43 |
|||
| Port 4451 |
44 - 51 |
|||
| Insertion Loss |
All Ports |
dB |
≤ 2.3 |
|
| Isolation |
Port 4451 |
dB |
≥ 12 |
|
| Ports 2027, 2835, 3643 |
≥ 15 |
|||
| Directivity |
dB |
≥ 50 |
||
| Optical Return Loss |
≥ 45 |
|||
| Optical Interfaces |
|
SC/APC (5) |
||
| Package |
|
2 Wide Modules |
||
Note: Insertion loss includes input and output connector loss.
BWDM4 Filter
Model GS7000 Passive Optical Modules
Table 6. Coupler Specifications
| Configuration |
Parameter |
Units |
Value |
Part Number |
| Common Specifications |
Wavelength |
nm |
1550 ± 40 |
|
| Split Ratio |
- |
Even |
||
| Optical Return Loss |
dB |
≥ 55 |
||
| 1x2 |
Insertion Loss (note 1) |
dB |
≤ 4.2 |
4030112 |
| Uniformity |
dB |
0.7 |
||
| Optical Interfaces |
|
SC/APC (3) |
||
| Package |
|
1 Wide Module |
||
| 1x3 |
Insertion Loss (note 1) |
dB |
≤ 6.3 |
4030113 |
| Uniformity |
dB |
1.0 |
||
| Optical Interfaces |
|
SC/APC (4) |
||
| Package |
|
2 Wide Modules |
||
| 1x4 |
Insertion Loss (note 1) |
dB |
≤ 7.6 |
4030114 |
| Uniformity |
dB |
1.2 |
||
| Optical Interfaces |
|
SC/APC (5) |
||
| Package |
|
2 Wide Modules |
Note:
1. Insertion loss includes input and output connector loss.
Model GS7000 Passive Optical Modules
Table 7. DWDM or CWDM 8 Channel Mux/Demux Specifications
| Configuration |
Parameter |
Units |
Value |
Part Number |
| DWDM 1x8 200G |
ITU Channels |
- |
200 GHz spacing, Ch 21 - 35, ODD |
4030093 |
| 200 GHz spacing, Ch 45 - 59, ODD |
4030094 |
|||
| Channel Bandwidth @ 0.5 dB |
nm |
± 0.25 |
|
|
| Insertion Loss (see note) |
dB |
≤ 3.0 |
||
| DWDM 1x8 100G |
ITU Ch’s |
- |
100 GHz spacing, Ch 20 - 27 |
4030096 |
| 100 GHz spacing, Ch 28 - 35 |
4030097 |
|||
| Channel Bandwidth @ 0.5 dB |
nm |
± 0.12 |
|
|
| Insertion Loss (note 1) |
dB |
≤ 3.2 |
||
| Common Specifications |
Insertion Loss Uniformity |
dB |
1.0 |
|
| Polarization Dependent Loss (PDL) |
dB |
≤ 0.2 |
||
| Polarization Mode Dispersion (PMD) |
ps |
≤ 0.15 |
||
| Directivity |
dB |
≥ 55 |
||
| Optical Return Loss - All ports |
dB |
≥ 50 |
||
| Isolation |
dB |
≥ 30 Adjacent Channels |
||
| ≥ 40 Non-Adjacent Channels |
||||
| Optical Interfaces |
|
8 Fiber MPO with male guide pins APC (1) |
||
| SC/APC (1) |
||||
| Package |
|
2 Wide Modules |
Note: Insertion loss includes input and output connector loss.
Model GS7000 Multi-Function Passive Optical Modules
Table 8. BWDM Narrowcast Broadcast with Narrowcast DeMux and Return Mux Specifications
| Model |
BC 8-Way Split |
Optional use as Dual BC |
BC ITU Ch |
NC Demux ITU Ch |
Return Mux Ch |
Part Number |
| GS7000-OP-BWDM-NCBC8-BC18-NC2027FR-SAMPO |
Yes |
No |
18 |
20 - 27 |
20 - 27 |
4030102 |
| GS7000-OP-BWDM-NCBC8-BC18-NC2835FR-SAMPO |
Yes |
No |
18 |
28 - 35 |
28 - 35 |
4030103 |
| GS7000-OP-BWDM-NCBC8-BC18-NC3643FR-SAMPO |
Yes |
No |
18 |
36 - 43 |
36 - 43 |
4030104 |
| GS7000-OP-BWDM-NCBC8-BC18-NC4451FR-SAMPO |
Yes |
No |
18 |
44 - 51 |
44 - 51 |
4030105 |
GS7000-OP-BWDM-NCBC8-BC18-NCXXXXFR-SAMPO (shown with 2 MPO fan-out cables)
Model GS7000 Multi-Function Passive Optical Modules
Table 9. BWDM Narrowcast Broadcast Module Specifications
| Optical Performance Characteristics |
||||
| Broadcast Path (Pass Channel) Wavelength Range (nm) |
ITU Ch 18 or 1543.5~1546.4nm for PN 4030100 |
|||
| Narrowcast Path (Reflect Channel) Wavelength Range (nm) |
ITU Ch’s 20-59 1528.50~1541.7 or 1549.0~1561.9nm for PN 4030100 |
|||
| Parameter |
Value |
Units |
||
| Narrowcast or return DWDM 100 GHz Channels |
ITU Channels 20 - 27 ITU Channels 28 - 35 ITU Channels 36 - 43 ITU Channels 44 - 51 |
|||
| Narrowcast 100G Channel Bandwidth |
ITU +/-0.12 |
nm |
||
| Broadcast Path Insertion Loss |
Broadcast to Common Output 1 - 8 |
≤ 12.0 |
dB |
|
| Broadcast to Common output 1 - 4 or 5 - 8 (only in BCNC8D4 module) |
≤ 9.0 |
|||
| Narrowcast Fwd Path Insertion Loss (note 1) |
Narrowcast to Common Output |
≤ 4.0 |
dB |
|
| Narrowcast to Common Output (only in part 4030100 and 4030101) |
≤ 1.0 |
|||
| Return Path Insertion Loss (see note) |
Return port 1 - 8 to Common Output (only in NCBC8-FR module) |
≤ 3.0 |
dB |
|
| Passband Ripple |
≤ 0.8 |
dB |
||
| Uniformity Across Common Outputs |
2.5 |
dB |
||
| Uniformity Across Outputs for Return Mux |
1.0 |
dB |
||
| Narrowcast or Return 100G Channel Isolation |
Narrowcast to Broadcast |
≥ 15 |
dB |
|
| Broadcast to Narrowcast |
≥ 15 |
dB |
||
| Return Loss |
≥ 45 |
dB |
||
| Directivity |
Narrowcast to Broadcast |
≥ 55 |
dB |
|
| Optical Interfaces |
8 Fiber MPO with male guide pins APC |
|
||
| SC/APC |
|
|||
| Package |
3 Wide Package |
|
||
Note: Insertion loss includes input and output connector loss.
Status Monitor Transponder/Local Control Modules
Overview
A Local Control Module must be installed to allow local monitoring and control of the active modules in the Model GS7000 Optical Hub. For remote monitoring and control, a Status Monitor Transponder must also be installed. The Status Monitor (SM) Transponder connects directly to the Local Control Module (LCM).
Local Control Module
The LCM provides local monitoring and control capability at the Model GS7000 Optical Hub station. The LCM is equipped with a USB port to enable connection to a local PC/laptop. The Model GS7000 ViewPort software must be installed on the PC/laptop to allow all parameters monitored by the LCM to be displayed and to allow local control of the optical switches and optical amplifiers.
Status Monitor Transponder
The SM Transponder is HMS compliant and provides remote monitoring and control capability at the cable plant's headend. The Model GS7000 Optical Hub must be connected to an active two-way RF network for status monitoring communications. Configuration parameters for the transponder module, such as IP address, can be changed using the PC-based ViewPort software.
Table 10. Monitorable Parameters (via LCM and SM Transponder)
| Description |
| Station - AC power presence and peak voltage (for split AC powering cases, AC power from both sides of node housing is monitored) |
| Power Supply - DC voltages from both primary and redundant power supplies |
| EDFA Optical Amplifier - Input & Output Optical Power, Module Temperature |
| Optical Switch - Switch Position, Optical Power, Module Temperature |
Table 11. Configurable Parameters (via LCM and SM Transponder)
| Description |
| EDFA Optical Amplifier - Set Mode, Set Power, Set Gain, Enable |
| Optical Switch - Set Mode, Set Threshold, Set Switch Position |
Model GS7000 Optical Hub Powering Information
Table 12. Station Powering Data
| Electrical |
Units |
Value |
|||||||
| Max AC Through Current (continuous) |
Amps |
15 |
|||||||
| Max AC Through Current |
Amps |
25 |
|||||||
| Under-voltage Lockout |
Volts |
33 VAC (no current draw below lockout voltage) |
|||||||
|
|
Component DC Current Draw (maximum) |
||||||||
| @ +24 VDC |
@ +8 VDC |
@ +5 VDC |
@ -6 VDC |
||||||
| BC EDFA +17 dBm |
Amps |
0.19 |
- |
- |
- |
||||
| BC EDFA +20 dBm |
Amps |
0.29 |
- |
- |
- |
||||
| BC EDFA +22 dBm |
Amps |
0.38 |
- |
- |
- |
||||
| NC Gain-Flattened EDFA +17 dBm |
Amps |
0.19 |
- |
- |
- |
||||
| NC Gain-Flattened EDFA +21 dBm |
Amps |
0.35 |
- |
- |
- |
||||
| Optical Switch |
Amps |
0.08 |
- |
- |
- |
||||
| LCM/Status Monitoring |
Amps |
- |
- |
0.5 |
- |
||||
| Power Supply DC Current Rating |
Amps |
6.2 |
1.0 |
1.3 |
0.8 |
||||
| Optical Hub with: (1) 20 dBm BC EDFA, (1) 17 dBm NC Gain-Flattened EDFA, (2) Optical Switches, (1) LCM |
|||||||||
| DC Current |
0.6 Amps @ 24 VDC and 0.5 Amps @ 5 VDC |
||||||||
| AC Voltage |
90 |
80 |
70 |
60 |
50 |
40 |
|||
| AC Current (A) |
0.49 |
0.49 |
0.48 |
0.50 |
0.54 |
0.59 |
|||
| AC Power (W) |
25.4 |
25.1 |
24.9 |
24.5 |
24.6 |
24.5 |
|||
| Optical Hub with: (2) 22 dBm BC EDFAs, (2) 21 dBm NC Gain-Flattened EDFAs, (2) Optical Switches, (1) LCM |
|||||||||
| DC Current |
1.6 Amps @ 24 VDC and 0.5 Amps @ 5 VDC |
||||||||
| AC Voltage |
90 |
80 |
70 |
60 |
50 |
40 |
|||
| AC Current (A) |
0.83 |
0.80 |
0.83 |
0.90 |
1.06 |
1.17 |
|||
| AC Power (W) |
50.5 |
50.2 |
50.0 |
49.8 |
50.1 |
50.2 |
|||
| Optical Hub with: (7) 22 dBm BC EDFAs, (1) LCM |
|||||||||
| DC Current |
2.6 Amps @ 24 VDC and 0.5 Amps @ 5 VDC |
||||||||
| AC Voltage |
90 |
80 |
70 |
60 |
50 |
40 |
|||
| AC Current (A) |
1.19 |
1.18 |
1.26 |
1.43 |
1.64 |
1.83 |
|||
| AC Power (W) |
81.5 |
80.9 |
80.9 |
80.8 |
78.1 |
78.2 |
|||
Note: AC currents specified are based on measurements made with typical CATV type ferro-resonant AC power supply (quasi-square wave).
The Model GS7000 Optical Hub is available in a wide variety of configurations. The Model GS7000 Optical Hub ordering matrix provides ordering information for configured node stations. This page contains ordering information for required and optional accessories. Please consult with your Account Representative, Customer Service Representative, or Systems Engineer to determine the best configuration for your particular application.
Table 13. Active Optical Modules
| Description |
Part Number for Ordering |
| +17 dBm EDFA Broadcast |
4027007 |
| +20 dBm EDFA Broadcast |
4027008 |
| +22 dBm EDFA Broadcast |
4027009 |
| +17 dBm EDFA Gain Flattened, Low Gain |
GS7K-GFEDFA-17L= |
| +17 dBm EDFA Gain Flattened, High Gain |
GS7K-GFEDFA-17H= |
| +21 dBm EDFA Gain Flattened, Low Gain |
GS7K-GFEDFA-21L= |
| +21 dBm EDFA Gain Flattened, High Gain |
GS7K-GFEDFA-21H= |
| GS7000 Optical Switch |
4027014 |
Table 14. Model GS7000 Passive Optical Modules - Single Function
| Description |
Part Number for Ordering |
| BWDM2 Two Band (Red/Blue) Filter |
4030111 |
| BWDM4 Four Band Filter |
4030110 |
| 1x2 Coupler |
4030112 |
| 1x3 Coupler |
4030113 |
| 1x4 Coupler |
4030114 |
| DWDM 8 channel Mux/Demux 200G, Ch 21 - 35 Odd |
4030093 |
| DWDM 8 channel Mux/Demux 200G, Ch 45 - 59 Odd |
4030094 |
| DWDM 8 channel Mux/Demux 100G, Ch 20 - 27 |
4030096 |
| DWDM 8 channel Mux/Demux 100G, Ch 28 - 35 |
4030097 |
Table 15. Model GS7000 Passive Optical Modules - Multi-Function
| Description |
Part Number for Ordering |
| BWDM Narrowcast Broadcast with Narrowcast DeMux and Return Mux |
Refer to Table 8 |
Table 16. Fiber Optic Cable Assemblies
| Description |
Model |
Part Number for Ordering |
| Service Cable with two 12 fiber ribbon cables with two MPO fiber connectors and a Model GS7000 Optical Hub housing entry connector on one end, 24 bare fibers on other end, 100 ft |
SERVICE CABLE, 2 MPO CONN, 2 RBN, 24 FBR |
4029426 |
| MPO to SC/APC Fan-out Jumper Cable, 1 meter |
JMPR-12S-3-P-MA-SA-F9-001 |
4030668 |
| SCA-SCA Jumper Cable, bend-insensitive, 1 meter |
JMPR-SSB-1.6-S-SA-SA-001 |
4030479 |
| SCA-SCA Jumper Cable, bend-insensitive, 0.5 meter |
JMPR-SSB-1.6-S-SA-SA-0.5 |
4030476 |
Table 17. Other Model GS7000 Optical Hub Components
| Description |
Part Number on Module |
Part Number for Ordering |
| Kit, GS7000 Optical Hub Housing Assembly (with 2 Power Supplies & Std Fiber Tray) |
|
4025879 |
| Kit, GS7000 Optical Hub Housing Assembly (with 2 Power Supplies & Ext Fiber Tray) |
|
4040222 |
| Power Supply |
4009226 |
4011930 |
| Local Control Module (LCM) no SM Transponder |
4027113 |
4027114 |
| Status Monitor Transponder (DOCSIS®) |
|
4036793 |
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