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The Metrodata FM4850 DSU is used to interface high performance DTE equipment such as bridges or routers to 8.448Mbps E2 services. The DTE equipment presents a HSSI interface.
Front: FM4850 E2 to HSSI Converter
Rear: FM4850 E2 to HSSI Converter
The FM4850 can be used at either end of the Wide Area link. Error conditions and usage statistics are gathered and stored by the FM4850. Unit set-up is done via a comprehensive menu system which is accessed via a local or remote terminal.
The optional Metrodata LM1100 SNMP Enabler permits management via a LAN using an SNMP system.
- High Spec E2 G.703 8.448Mbps interface
- HSSI Data port
- External Alarm relay port
- Remote configuration and testing of units across the network
- Comprehensive performance monitoring of both device and line
- Optional SNMP management
- Optional -48 volt DC supply
- Built to European Standards
| E2 Line Interface |
| Port |
G.703 75ohm interface |
| Framing |
G.742 or unframed |
| Interface |
BNC (75ohm) |
| Line Coding |
HDB3 |
| Bit rate |
8,448 Mbps |
| Cable Lengths |
E2 BNC RG59 = 150m |
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E2 BNC UR202 = 180m |
| DTE Interface |
| Port |
HSSI per EIA612, EIA613 |
| Interface |
50 way AMP (SCSI II connector) |
| Bite Rate |
8.328 Mbps (Line framed) |
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8.448 Mbps (Line unframed) |
| Configuration & Management |
| Type |
Menu Driven |
| Access |
System console, telnet, SNMP |
| Interface |
V.24, Ethernet 10BaseT via RJ45 |
| Security |
Access by 2 level password |
| System |
Non volatile setup |
| Clock Modes |
Internal, loop |
| Status LED & Diagnostics |
| Loopbacks |
NI local loop, NI remote loop, DTE loop, DTE external loop |
| Statistics |
Per G.821, 15min, 24 hour totals |
| Major Alarms |
LOS, LOF, SQ |
| Minor Alarms |
AIS, RAI |
| Data |
DTE Tx Data, DTE Rx Data, DTE Fault |
| Test |
Test via menu, Test LED on front panel |
| Power Supply |
| AC Mains |
100-250 VAC, 50-400Hz, 50mA IEC connector |
| -48VDC |
-36 to -72 VDC, 200 - 100mA |
| Packaging |
| Type |
1U 19inch Rackmount |
| Dimensions |
435 x 213 x 44 mm (W x D x H) |
| Environment |
| Temp |
0 - 50 deg C |
| Humidity |
95% RH, non condensing |
| Pressure |
86 - 106 KPA |
| Compliance & Approvals |
| Performance |
BS6328, G703, G823, G742, BABT#NS/4043/I/R/60455 |
| Safety |
EN41003, EN60950 |
| EMC |
EN55022, EN50082 |
| Statistics |
G.821, AT&T54016:15min, 24hr totals |
| Management |
RFC1213 (MIBII), RFC1495 (Telnet), RFC1157 (SNMP), RFC1406 (DS1/E1), Metro MIB (DSU), RFC1215 (Traps) |
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Part Number |
| Product |
100-250 AC Mains |
-48 DC Power |
| FM4850 E2 to HSSI |
80-05-014 |
80-21-014 |
| LM1100 SNMP Enabler |
14-02-139 |
14-02-139 |
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