4E1 PDH multiplexer
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Version:
|
January 2009 |
V1.00 |
|
February, 2010 |
V1.10 |
Catalog
Ⅴ. Installation and Maintenance
3. Introduction of Cable Making
4E1/8E1 PDH is a point to point fiber transmission device based on SLSI, which realizes 4/8E1 and 4 100M Ethernet transmission over fiber in a single board. 4E1/8E1 PDH is with perfect monitor alarm, high integration, low consumption, stable performance and easy to use.
◆ 4 Ethernet available with VLAN function
◆ Fiber speed: 150Mbps.
◆ HDB3 E1 coding rate. E1 Jitter tolerance, transfer characteristic, output jitter is fully comply with ITU-T G.702, G.823, G.742
◆ Ethernet auto adapt to full/half duplex, 10/100M.
◆ With perfect alarm function
◆ The remote device can work with chassis to connect as star network.
◆ RS232 network management or RS232 data optional
◆ Single board design, 1U and 19inches standard.
◆ AC220V and DC-48V power supply
The 4E1/8E1 PDH has 4 Ethernet ports and VLAN is offered by DIP switch.
4E1/8E1 PDH is designed with one channel RS232 with the form of RJ45.
4E1/8E1 PDH has perfect alarm including: NOP, OOF, 10-3 10-6 error code, LOS1~LOS8 for each E1 spur-track signal loss, LINK1~LINK4 for Ethernet link status.
Table 1 optical options
|
Apellation |
Options |
Standard |
|
Transmission mode |
single mode/multi-mode |
Single mode |
|
Module type |
single fiber/dual fiber |
Dual fiber |
|
Interface type |
FC/SC/ST |
FC |
|
Optical wavelength |
850nm/1310nm/1550nm |
1310nm |
|
Transmission distance |
2Km/40Km/60Km/120Km |
40Km |
◆ Rate: 2.048Mbps ±50ppm
◆ Impedance: unbalanced 75Ω or balanced 120 Ω
◆ HDB3 coding: compliant with ITU-T G.703
◆ Output jitter, please refer to table 2:
Table 2 Output jitter
|
B1(20Hz~100KHz) |
<0.08 UI |
|
B2(18kHz~100KHz) |
<0.05 UI |
◆ Input jitter tolerance
Input jitter tolerant comply with ITU-T G. 823, the typical value shows in table 3:
Table 3 input jitter tolerance
|
Frequency(Hz) |
10 |
20 |
63 |
130 |
500 |
1.2k |
2.1k |
3.7k |
6.4k |
11k |
100k |
|
Jitter (UI) |
30.7 |
30 |
26.7 |
14.6 |
6.04 |
4.22 |
3.83 |
3.7 |
3.1 |
2.8 |
0.7 |
◆ Jitter transfer feature
Jitter transfer comply with ITU-T G.742, the typical value shows in table 4:
Table 4: Jitter transfer feature
|
Frequency(Hz) |
20 |
45 |
65 |
130 |
260 |
500 |
1.2k |
2.1k |
100k |
|
Gain（dB） |
-35.97 |
-42.71 |
-56.82 |
-64.43 |
-57.63 |
-57.50 |
-54.37 |
-55.12 |
-52.31 |
Table 5: Ethernet basic parameters
|
S/N |
ITEM |
Parameter or Function |
Default |
|
1 |
MAC address table capacity |
1024 |
- |
|
2 |
MAC address table aging time |
Very short |
- |
|
3 |
The minimum frame length |
64bytes |
- |
|
4 |
The maximum frame length |
1916bytes |
- |
|
5 |
Working mode |
Auto adapt 10/100M, full/half duplex |
Auto negotiation |
|
6 |
VLAN |
Support VLAN division based on ports Support clear transmission not on VLAN status |
Not with VLAN |
|
7 |
Stream Control |
Supported |
Open |
|
8 |
Bandwidth |
4 ports share 100Mbps |
|
Table 6: Throughout measurement result table
|
Frame Size |
Passed Rate (%) |
Port 01 to Port 02 （pks/sec） |
Port 02 to Port 01 (pks/sec) |
Total |
|
|
|
100M -100M |
100M -100M |
|
|
64 |
100.00 |
148810 |
148810 |
297620 |
|
128 |
100.00 |
84459 |
84459 |
168918 |
|
256 |
100.00 |
45290 |
45290 |
90580 |
|
512 |
100.00 |
23496 |
23496 |
46992 |
|
1024 |
100.00 |
11973 |
11973 |
23946 |
|
1280 |
100.00 |
9615 |
9615 |
19230 |
|
1518 |
100.00 |
8127 |
8127 |
16254 |
|
1536 |
100.00 |
8033 |
8033 |
16066 |
◆ Overload packet loss rate
Table 7 Overload packet loss rate measurement result table
|
Frame Size |
Rate Tested (%) |
Port 01 to Port 02 (%) |
Port 02 to Port 01 (%) |
Average |
|
|
|
100M -100M |
100M -100M |
|
|
64 |
100.00 |
0.000 |
0.000 |
0.000 |
|
128 |
100.00 |
0.000 |
0.000 |
0.000 |
|
256 |
100.00 |
0.000 |
0.000 |
0.000 |
|
512 |
100.00 |
0.000 |
0.000 |
0.000 |
|
1024 |
100.00 |
0.000 |
0.000 |
0.000 |
|
1280 |
100.00 |
0.000 |
0.000 |
0.000 |
|
1518 |
100.00 |
0.000 |
0.000 |
0.000 |
|
1536 |
100.00 |
0.000 |
0.000 |
0.000 |
◆ Forward delay. Please refer to table 8.
Table 8: Forward delay measurement result table
|
Frame Size |
Rate Tested (%) |
Port 01 to Port 02 (us)-CT |
Average (CT) |
Port 02 to Port 01 (us)-S&F |
Average (S&F) |
|
|
|
100M -100M |
|
100M -100M |
|
|
64 |
100.00 |
100.3 |
100.3 |
95.1 |
95.1 |
|
128 |
100.00 |
110.6 |
110.6 |
100.4 |
100.4 |
|
256 |
100.00 |
131.1 |
131.1 |
110.6 |
110.6 |
|
512 |
100.00 |
172.0 |
172.0 |
131.1 |
131.1 |
|
1024 |
100.00 |
253.5 |
253.5 |
171.6 |
171.6 |
|
1280 |
100.00 |
294.8 |
294.8 |
192.3 |
192.3 |
|
1518 |
100.00 |
332.9 |
332.9 |
211.5 |
211.5 |
|
1536 |
100.00 |
335.7 |
335.7 |
212.9 |
212.9 |
◆ Back to back measurement. Please refer to table 9.
Table 9: back to back measurement result table
|
Frame Size |
Rate Tested (%) |
Port 01 to Port 02 Burst Size (frames) |
Port 02 to Port 01 Burst Size (frames) |
Total |
|
|
|
100M -100M |
100M -100M |
|
|
64 |
100.00 |
297620 |
297620 |
595240 |
|
128 |
100.00 |
168918 |
168918 |
337836 |
|
256 |
100.00 |
90580 |
90580 |
181160 |
|
512 |
100.00 |
46992 |
46992 |
93984 |
|
1024 |
100.00 |
23946 |
23946 |
47892 |
|
1280 |
100.00 |
19230 |
19230 |
38460 |
|
1518 |
100.00 |
16254 |
16254 |
32508 |
|
1536 |
100.00 |
16066 |
16066 |
32132 |
† Input power voltage: DC-36V ～ DC-72V (DC) available for -48V
AC165V ～ AC264V available for AC220V
† Consumption: 5W
† Temperature: 0℃——50℃
† Humidity: 95%, non-condensing
† Dimensions: L*H*W: 483*44*180mm
† Weight: 2.5kg
4E1/8E1 PDH front panel shows in figure 2 as below:
Figure 2: 4E1/8E1 PDH Multiplexer Front Panel
Table 10, front panel indicator light illumination
|
Indicator Type |
Light Color |
Status |
Function Description |
|
POWER |
GREEN |
ON |
PDH power indicator. In ON status when power up. |
|
LINK1-4 |
GREEN |
ON/ FLICKER |
Ethernet connection and data transceiving indicator. ON indicates connection while flicker indicates data transceiving. |
|
ALR |
RED |
ON/ FLICKER |
General alarm indicator. ALR in ON status when local device alarms. The indicators alarm for local device. When SEL:1=ON, the indicator alarms for remote device. |
|
NOP |
RED |
ON |
No optical alarm. This alarm will shield LOF, IE-3, IE-6 alarm. In ON status when no optical input. In OFF status when receiving optical. NOP indicator can alarm for the remote device after press down the alarm choice switch. |
|
OOF |
RED |
ON |
Lose of optical frame. The alarm will shield IE-3, IE-6. This alarm is shielded when no optical. OOF indicator can alarm for the remote device after press down the alarm choice switch. |
|
IE-3 |
RED |
ON |
Alarms when the circuit error rate is more than 10-3. IE-6 is shielded. IE-3 indicator can alarm for remote device after press down the alarm choice switch |
|
IE-6 |
RED |
ON |
Alarms when the circuit error code is more than 10-6. IE-6 indicator can alarm for remote device after press down the alarm choice switch. |
|
LOS8-LOS1 |
RED |
ON |
Alarm for 4E1/8E1 spur track losing. When E1 spur track lose signals, the reference LOS indicator will be in on status. LOS indicators can alarm for remote device after press down the alarm choice switch. |
Table 11. SEL Switch Definition
|
SEL |
FUNCTION |
DEFAULT |
|
SEL:1 |
OFF: indicators for local alarm ON: indicators for remote alarm |
OFF |
|
SEL:2 |
OFF: 4 Ethernet are in intercommunication ON: 4Ethernet in VLAN status. If SEL:2 at remote side also configured to ON status, port1 at local side can only communicate with remote port1. Port 2 at local side can only communicate with remote port 2. And so on. |
OFF |
|
SEL:3 |
OFF: normal work ON: E1 in loop status. SEL:4 takes effect on this status. |
OFF |
|
SEL:4 |
OFF: E1 with local loop back ON: E1 with remote loop back Takes effect when SEL:3=ON |
OFF |
|
SEL:5 |
OFF: normal work ON: Loop back from optical to device. |
OFF |
|
SEL:1 |
OFF: unshield alarm indication ON: shield alarm indication |
OFF |
The rear panel of 4E1/8E1 PDH Multiplexer shows in figure 3 below:
figure 3 4E1/8E1 PDH Multiplexer Rear Panel
Rear panel description
◆ AC220V: AC220V power input
◆ DC-48V/GND: DC-48V power input
◆ Switch: Dial to “AC” for AC220V power supply. Dial to DC for DC-48V power supply (don't need to distinguish from positive and negative). Dial to "OFF" indicates shut off the power.
◆ E1 1-8: 1-8 channel E1 interface
◆ ETHERNET: Ethernet interface
◆ NM/232: network management and RS232 data channel
◆ TX RX: optical output and input. It's not for single fiber.
Ⅴ. Installation and Maintenance
Open the package, check the device and accessory. If there is any short or loss, please contact us as soon as possible.
Power up the device, the power indicator will turn on. Then configure according to the requirement.
This is a precise photoelectrical device. Please handle with care to avoid damage. Protect against the tide and bump.
The device has been configured to the best status. All the function interfaces are in the front and rear panel. If you are not our technical, please don’t open the device.
Please contact the supplier promptly once there is malfunction.
3. Introduction of Cable Making
NM/232: network management and RS232 data channel interface
Network management cord making ways
Pin6 - PC DB9pin2
Pin7－PC DB9pin3
Pin5－PC DB9pin5
RS232 data channel definition as below:
Pin2: data output
Pin3: data input
Pin4: ground
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