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HSSI is a common DTE interface for higher speed routers, servers, satellite earth station equipment. It uses multistranded copper cable and can operate at 52Mbit/s max, for distances up to 10 metres.
In Satellite earth stations, data warehouses where a large quantity of HIS-devices need interconnecting, the 10 metre restriction can become a major logistics problem.
So rather than having to locate ALL equipment within the same room or close area, by using a HSSI-ASI converter the connection distances can be extended to 150m using standard coaxial cable. Certainly separate rooms, even different buildings can now be used to locate equipment, and probably segment different types/manufacturer.
The HE1000 can be used in pairs to provide a point-to-point HSSI extension, or singly, typically in a satellite earth station where a HSSI router can be connected via an HE1000 to an ASI satellite modem up to 150 metre away.
The Metrodata HE1000 HSSI Extender provides a simple Plug & Play point to point HSSI extension function. The HE1000 offers the ability to extend a HSSI connection to 150 metres whilst operating at variable data rates up to 51.84Mbps.
Front: HE1000 HSSI Extender
Rear: HE1000 HSSI Extender
The HE1000 operates as a HSSI DCE, providing the transmit timing to an attached router. A simple dip-switch selection enables operation at either n*1Mb/s or standard network frequencies such as 34.368Mbps for example. The HE1000 provides a standards-compliant asynchronous serial interface (ASI) as the transmission medium.
ASI runs over standard coaxial cable terminated with BNC connectors. It provides a much more flexible and robust interconnect than HSSI. The ASI interface utilises an adaptive equaliser stage in the receive interface and can operate over 150 metres of good quality coaxial cable. The HE1000 ASI interface is fully compatible with the ASI interface presented on Satellite modems.
A primary design goal for the HE1000 was ease of use, and the HE1000 is truly Plug & Play, with almost no configuration necessary.
The HE1000 can easily be rackmounted in either a 1U two unit rackmount kit, 1U quad (4 x HE1000) box or in a 6U eighteen unit rackmount kit.
- Must be used in pairs.
- Extends HSSI over 150 metres
- Data paths to 51.84Mbps
- Asymmetric data rate support
- External Alarm relay port
- Satellite modem compliant ASI interface
- Simple bandwidth configuration
- Plug and Play solution
- Quad option available - 4 HE1000's in 1U box
In the schematic above, 2 routers are located 150 metres apart with HSSI interfaces operating at 51.84Mbps.
In the schematic above, the HE1000 converts traffic from HSSI to ASI, allowing the router to connect to the satellite modem, which is 150 metres away. Asymmetric data rates of 8/34 Mbit/s are supported by the HE1000.
HE1000: Intrabuilding Connection
HE1000: Campus/Inter building/Inter floor connection
| Router Port |
| Physical Interface |
HSSI, 50 way AMP connector |
| Presentation |
DCE |
| Controls |
TA, CA |
| Data Rates |
Dip-switch selectable N x 1 Mbps or standard Mbps as below:
1.544, 2.048, 6.312, 8.192, 8.448, 16.384, 32.768, 34.368, 44.736, 51.84 |
| ASI UNI Port |
| Physical Interface |
BNC (75 ohm) |
| Line Code |
8B / 10B |
| Transport Clock |
270 Mbps +/- 15 ppm |
| Voltage |
800 mV +/- 10% |
| Data Rate |
Up to 51.84 Mbps |
| Framing |
Unframed |
| ASI Mode |
Distributed |
| Jitter |
Per EN50083-9 |
| Environment |
| Temp |
0-45 deg C |
| Humidity |
95% RH, non-condensing |
| Pressure |
86-106 KPA |
| Power Supply |
| AC Mains |
220-240 VAC, 50-400Hz, 50mA IEC connector |
| -48VDC |
-40 to -72 VDC, 200-100mA |
| Packaging |
| Type |
Modem, 1U high without feet |
| Dimensions (W x D x H) mm |
| Rackmount |
202 x 132 x 44 (without feet) |
| Desktop |
202 x 132 x 48 (with feet) |
| Compliance & Approvals |
| Safety |
EN60950 |
| EMC |
EN55022, EN50082, EN50083-9 |
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Part Number
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Product
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AC Main: 100 - 250 VAC
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DC Power: -48 VDC
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| HE1000 |
80-05-500
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80-21-500 |
1U 2 Unit Rackmount Kit
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80-05-256
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80-05-256
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6U 18 Unit Rackmount Kit
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80-05-250 |
80-05-255 |
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