| F4-51 E1/10Base-T Converter |
| The device F4-51 Network Bridge is a high performance, remote, self-learning Ethernet bridge. Its compact size and low cost make it ideal for cost-sensitive bridging applications, or as a LAN extender over bit stream type infrastructures. Its E1 data interface also provides an economical digital access solution for E1 and Fractional E1 network Services, which can work at data rates of 64Kbps to 2048Kbps. User data is placed into the E1 frame, using only the required number of timeslots. Timeslot assignment is accomplished according to the Data Port speed and manual setting of DIP switches. The main E1 link may be clocked from the recovered receive clock or from an internal oscillator. For easy to check the fault of network line, the device provides loop selection, both local loop and remote loop. |
| Features |
• High performance bridge for 10Base-T Ethernet extension
• Fully compatible with IEEE 802.3 and Ethernet Standards
• E1 channel: Full and Fabrication optional, 75/120ohm optional
• Ethernet Port:: 10Mbps, Full/Half Duplex Mode compatible
• 10Base-T LAN Interface on RJ-45 connector and MDI/MDI-X optional
• Allow transmitting and receiving VLAN data packet
• 15000 frames per second filtering and forwarding rate
• 1000 MAC address LAN table, and automatic LAN table learning and aging.
• Standalone and 12 slots chassis optional
• Chassis support E1/10Base-T Converter and E1/V.35 Converter
• Power of Chassis: 2 Slots for slide in power supplier module, AC or DC power supplier module, Redundant Power supported
• AC220V 20 or DC-48V power input |
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| Specifications |
| LAN port |
Standard: Conforms to IEEE802.3 / 10Base-T Ethernet
Data rate: 10Mbps(20Mbps/10Base-T in Full duplex topology)
Compatible on Full/Half duplex topology
Connectors: RJ-45 Connector
Transfer distance:<150m |
E1 port |
Standard: ITU G.703, G.704,
Jitter Performance: According to ITU G.823
Bit rate: NX64Kbps, N=1~31 (Fractional Mode) or 2.048Mbps(Full Mode)
Line Code: HDB3
Line Impedance: 75/120ohms optional
Pulse Amplitude: Nominal 2.37V±10% |
General |
Voltage: AC 220V 20 or DC 48V
Power Consumption: <3 Watts
Temperature: 0-50°C
Humidity: 0-90%(non-condensing)
Size: (Width: from left to right)
Standalone: 272mm Width x 139mm Deep x 41mm High
Chassis: 438mm Width x 252mm Deep x 178mm High
(eqv. 4U High and 19inch Width) |
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| Appearance |
| Front Panel of standalone |
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| Back Panel of standalone |
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120ohm E1 port�s definition: |
| Pin |
3 |
4 |
5 |
6 |
2,7 |
other |
| Func. |
TX+ |
TX- |
RX- |
RX+ |
GND |
N.A. |
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Front Panel of Chassis |
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Back Panel of Chassis |
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| LED Status Description |
| Table 1 LED Status Description |
| Indicator |
Color |
Status |
Description |
| RXD |
Yellow |
Blink |
Receiving data |
| TXD |
Yellow |
Blink |
Transmitting data |
| LINK |
Green |
ON |
Ethernet(10Base-T) port link OK |
| FDX |
Green |
ON |
Ethernet is working at Full Duplex mode |
| LOS |
Red |
ON |
E1 link signal loss |
| LOF |
Red |
ON |
G.704 frame synchronization loss |
| LOOP |
Green |
ON |
Indicate Local Loop Status |
| POWER |
Green |
ON |
Power supply OK |
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| DIP Switch Setting Tables |
| Refer to the following tables for the functions of the DIP switches located along the both of the front and back side of the F4-51. F4-51 provides a total of 5 DIP switches for timeslot selection(see table 2 for detail). But please NOTE when you select unframed mode(set pin 7 of SWITCH1 ON), the timeslot setting does no function. Fractional E1 uses only a fraction of the total available timeslots. For example, if you wish to translate only 192K from a 2048K E1 line, you only need to set two pins, pin1 and pin2 of SWITCH1, OFF and set three pins, pin3-5 of SWITCH1, ON. |
| Function Selection |
| Table 2 SWITCH1: Function Selection |
| Status |
ON |
OFF |
| PIN.DESP. |
| 1 |
BW0 |
E1 Bandwidth Setting.
BW0-BW4 are used as Binary Code and can provide 32 different kinds of Bandwidth.
BW4 is the MSB, BW0 is the LSB. When is ON , it means 0, when is OFF, it means 1.
See Table 6 to get more details.
These settings will be ignored when No.7 Full/Fabr is set OFF. |
| 2 |
BW1 |
| 3 |
BW2 |
| 4 |
BW3 |
| 5 |
BW4 |
| 6 |
NA |
Not Available |
Not Available |
| 7 |
Full/Fabr. |
Framed(Fractional) mode |
Unframed(Full) mode |
| 8 |
E1_Clock |
Recovered Clock |
Internal Oscillator |
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| NOTE: be sure not to set the pair of device on the same network line working at both internal Oscillator. |
75/120 ohm Selection |
| Table 3 75/120ohm Selection Switch |
| Pin No. |
When use 75 ohm |
When use 120 ohm |
| 1 |
OFF |
ON |
| 2 |
ON |
OFF |
| 3 |
ON: TRIP is connected to ground
OFF: TRIP is opened |
OFF |
| 4 |
ON: RRIP is connected to ground
OFF: RRIP is opened |
OFF |
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| So if you want to use 120ohm's E1 channel, you shall configure the 75/120ohm Selection switch as following: 1: ON 2-4 OFF. |
E1 Loop Selection |
| Table 4 E1_LP Switch Descriptions |
| E1_LP switch |
Description |
| Up |
None loop, work as normal |
| Down |
Loop mode, usually used to check the fault of the network line. To configure either Local loop or Remote loop, please see table 5. |
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Table 5 LP_MODE Switch Description |
| LP_Mode switch |
Description |
| Up |
Remote Loop, only available on Fractional(framed) Mode |
| Down |
Local Loop |
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NOTE: 1. Before you select remote loop or local loop, you should set E1_LP down first;
2. Local Loop Back is available both in framed mode and in unframed mode;
3. Remote Loop Back is only available in framed mode. In other words, if you want to use remote loop, you should set the No7 of "SWITCH1"(on the front panel of the device) ON.(see table 2 of the technical datasheet);
4. If Unit A(F4-51) is at internal clock, Unit B(F4-51) is at recovered clock, and there is no other based clock in the whole network line, you can't set Unit B(F4-51) on remote loop.
5. Unit A's local loop back: |
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| Unit A's remote loop back: |
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| Applications |
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| * Specificatiile pot fi schimbate fara preaviz |
