Raisecom RC802-240B Manuale utente

RC802-240B

8 E1 module optical multiplexer

User Manual

Beijing Raisecom science and technology Ltd. Co

Content

Chapter 1 RC802-240B（Version C）Overview..................................................1

Chapter 2 Instruction..............................................................................................2

Chapter 3 Installation and test................................................................................5

Chapter 4 Troubleshooting.....................................................................................6

Appendix A Introduction of making cable.............................................................7

Chapter 1 RC802-240B（Version C）Overview

1.1 product introduction

RC802-120B×2 is an ideal transmission device of optical fiber for point to point networks,

middle and small capacity networks, such as wireless communication base stations, private

communication networks and switch networks. It can be applied to either public networks or

various private networks. It can be managed by RC004-NMS1 inside MPU slot of RC004-16

1.2 product parameter

1.2.1 E1 interface characteristic：

rate: 2048Kbps±50ppm

line code: HDB3

impedance of interface：75Ω（unbalanced）or 120Ω（balanced）

Electrical characteristics:complies with ITU-T G.703

Transfer characteristics: complies with ITU-T G.823

Input jitter tolerance: complies with ITU-T G.823

1.2.2 Optical interface characteristic：

rate：100Mbps

line code：4B5B

fiber connector：SC

Optical transmission：

Launch power：≥-5 dBm Receiving sensitivity：≤-35 dBm

Wavelength：1310nm Transmission distance：>40km

1.2.3 Auxiliary data channel

RS232，rate：0~64Kbps

1.2.4 Power supply

RC004-16 chassis provides power supply

1.2.5 Environment

Temp：0 ~ 45℃

Humidity：≤90%（25℃）

1.2.6 Dimension

RC004-16：436mm(W)×440mm(H)×360mm(D)

1.3 Interconnection

1.3.1 Slide-in module RC802-240B can work in pair with standalone RC801-240B.

- 1 -

Chapter 2 Instruction

2.1 Introduction of front panel

PWR

LOS

MASK

LOS

LOF

E-3

E-6

RS232

fix

ann

Power indicator（Green）：On, built-in power working in good condition

The row (L) indicates “local”

The row below indicates “Remote”

E1 LOS alarm(red): receiving signal of E1 channel is loss，it turns red

Optical alarm:

LOS alarm (red): when receiving signal is loss, it turns red

LOF alarm (red): When optical receiving frames lose synchronization, the

alarm indicator turns on.

E-3 serious error bit alarm exceeds 10-3(red): it is flashing.

E-6 serious error bit alarm exceeds 10-6(yellow): it turns yellow

Optical interface: For dual-strand device，optical interface is

DSC/PC. TX means sending，RX means receiving.

Auxiliary channel: asyc RS232，rate 0~64Kbps

Mask/ No mask：

“ON”: Mask unused E1' s alarm; “OFF”: No mask unused E1' s alarm.

Fixed spanner

Figure 1 sketch map of RC802-240B

As shown figure 1, all alarms of E1 are receiving signal alarm. The alarm of remote site is sent

- 2 -

by fiber. So remote alarm is only right when optical interface is available.

1 2 3 4

2.2 Internal DIP-Switch setting

2.2.1 Impedance setting of E1 interface

There are 8 groups 4-bit DIP-Switch, the number of component is S1~S8.

These switches can’t be controlled by NMS. So they can be done

manually.

OFF

The definition is as following:

1st 2nd 3rd 4th 1st 2nd 3rd 4th

ON ON ON OFF Or OFF OFF OFF ON

75Ωunbalanced signal effective 120Ωbalanced signal effective

As shown in figure above, the default status is set as “75Ωunbalanced signal BNC interface

effective”.

 75ohm unbalanced: besides setting DIP-Switch, E1 interface should be installed CC4B-8G

coax adapter on DB37 connector; this adapter converts DB37 interface to eight CC3 coax

connector. It fits 4 E1 channel input and 4 E1 channel output.

 120ohm balanced: besides setting 8 groups DIP-Switch according to the table above, E1

interface should be plugged DB37 connector to fetch twisted pairs. About line order of DB37

for twisted pairs to see appendix A.

2.2.2 DIP-Switch setting

There is a group 6-bit DIP-Switch on module PCB, the series number is

S9 ON

The definition for 6-bit DIP-Switch

 1st ~4th bit: loop-back OFF 1 2 3 4 5 6

1st 2nd 3rd 4th Loop-back

OFF OFF OFF OFF No loop-back

OFF OFF OFF ON 1st E1

OFF OFF ON OFF 2nd E1

OFF OFF ON ON 3rd E1

OFF ON OFF OFF 4th E1

OFF ON OFF ON 5th E1

OFF ON ON OFF 6th E1

OFF ON ON ON 7th E1

ON OFF OFF OFF 8th E1

ON ON ON ON All E1 lines

Note: Only two test method can be set: single E1 channel loop-back or all E1 channels

loop-back. When single E1 channel loop-back is testing, the other channels are working

without disturbance.

When it is default status, loop-back can be configured directly by NMS.

 5th bit：Choice of loop-back type

5th bit Choice of loop-back type

OFF Remote loop-back enable

- 3 -

ON Local loop-back enable

Fiber

Multipl

exer

Error bit tester

Multipl

exer E1

Local Remote

Figure2: sketch map of setting remote loop-back on local site

Figure3: sketch map of setting local loop-back on local site

Multipl

exer

Fiber

Multipl

exer E1

Error bit teste

Local Remote

Note：When any loop-back is setting on local site, 1st ~4th loop- back DIP-switch of remote site

must be all off.

DIP-Switch of remote loop-back default setting is configured as enable. This status can neither be

inquired nor controlled by NMS. So it should not be modified. Only when you test device’s

performance right or not, DIP-Switch is for auxiliary function. Please keep default setting when

loop-back is controlled by NMS.

 6th bit：DIP-switch for FPT

When FPT is disabled，it’s similar to AIS of traditional multiplexers. When E1 signal on remote site

is lost，the E1 output opposite of local site is “1”；when optical signal at local site is lost ，all E1

output are “1” on local site.

FPT enable: when there is alarm of LOS on any direction of optical interface，both sides E1 output

can not transmit HDB3 coding. At this circumstance, alarm on terminal device (such as switches,

converters, SDH) of E1 link will be LOS，not AIS alarm.

6th bit FPT

OFF Disable（complies with AIS ）

ON Enable

This function is for some special need. It can be inquired, but can’t be controlled. So if it is

required to start, it must be forced manually.

- 4 -

Chapter 3 Installation and test

3.1 Installation

3.1.1 connecting

 E1 interface

There are two groups DB37 male connectors above every MPU slot of RC004-16. The first

DB37 group from the top is for 1~4 E1 of 1st unit; the second DB37 is for 1~4 E1 of 2nd unit.

75ohm unbalanced: CC4B-8G adapter is installed on DB37 male connector.

CC3-K3 coax cable on adapter. It is suggested to connect with SYV 75-2-2 for 75ohm

unbalanced.

120ohm balanced: it can be installed DB37 female adapter with twisted pair cable for E1

output/input on DB37 male connector on our PDH.

 Optical interface

Plug the SC fiber tail into optical interface (push hard until to the deep end). If not sure about

transmission direction, it’s advised first to turn on the power of device and then plug in the fiber

cable.

3.1.3 Power supply connection

Open PWR of RC004-16.

When it is electrified, it is necessary to confirm no alarm on optical interface at first. There is

no LOS alarm if optical interface is right. ERR is yellow when device is just electrified. The reason

is that the moment of current coming can bring a little error bit. After 10~20 seconds, ERR is off.

ERR includes LOS, LOF, 10-3 and 10-6.

3.1.4 Mask unused E1 alarm

If the connected E1 links are working in good condition without any signal loss, while there is still

another unused E1 link, the LOS alarm for unused E1 link may occur, which is called “unused E1

alarm”. Press MASK/NO MASK button “on” to clear all the unused E1 alarm and all the E1 LOS

alarm indicators will be off.

In the case unused E1 link alarm being masked, if the connected E1 sub-channel is disconnected,

the LOS indicator of this sub-channel will still be on.

If power supply is cut off and turned on again, then the mask function will be disabled. Press button

to “off” and then pressed to “on” again.

If after a period of operation, a new E1channel is needed, first disable the mask function and

then connect E1 link.

- 5 -

Chapter 4 Troubleshooting

If there are any problems during installation and using, try the following proposals. If the problems

can still not be solved, please contact distributors or hot-line technical support for help.

The following explanations and solutions for alarms at optical ports and LOS alarms at E1 ports are

used to handling local alarm problems. For remote-end alarms, please handle them at remote site.

 Green PWR indicator not on

Answer: PS faults. Check whether PS is working properly and –48 PS connection is not reversed.

 LOS red indicator of optical port on

Answer: Loss of receiving signal occurs at optical port. Check whether the input fiber (RX) is

connected well and ensure not reversed. Or check the receiving optical power with optical power

test-meter, it should be greater than receiving sensitivity specification.

 Optical interface ERR on

Answer: It is normal that ERR alarm occurs for 10 seconds just after turning on the power, after 10

seconds the ERR indicator will be off. If ERR alarm occurs during operation, check whether optical

RX port connects well and RX optical power.

 LOS red indicator of E1 sub-channel on

Answer: Loss alarm of RX signal at E1 sub-channel, no HDB3 signal is received. Check whether all

E1 ports are connected well, or whether 75 Ωcable are reversely connected, or whether the wires

of 75 Ωcable are in right order. If LOS alarm occurs at unused E1 sub-channel, press “mask”

button to “on” to musk the alarm after finishing the configuration of device.

 Mask button is on, but there is still alarm in unused E1 sub-channel.

Answer: probably the mask function is disabled if power supply is cut off and then turned on. To

solve is by pressing the mask button to “OFF”, and then pressing to “on” to enable mask function.

 How to take cable off from connector

Answer: push the part that is the biggest diameter of connector; don’t twist. Then pull off.

- 6 -

Appendix A Introduction of making cable

 75ohm adopting DB37 coax adapter:

It is suggested to connect with SYV 75-2-2 coax cable. The distance is less than 200 meters.

 120ohm DB37 male connector is defined as following:

DB37 pin

definition 1st 2

nd 3

rd 4

OUT 3、4 7、8 11、12 15、16

IN 21、22 25、26 29、30 33、34

Others hang up. Twisted pairs can be jointing on DB37 female connector.

Making cable of auxiliary channel

 Auxiliary channel RS232 cable

Adopting RJ45 interface, pins defined as following:

3 ——RXD 232 signal input

6 ——TXD 232 signal output

4、5——GND

others —hang up

RS232 (RJ45) interface is connected to computer’s console (DB9 female connector), line order

as following: RJ45 DB9F

3 ←— 3

6 —→ 2

4、5 —— 5

- 7 -

Altri manuali per RC802-240B

Indice

Altri manuali Raisecom Multiplexer

Raisecom

Raisecom OPCOM3100 series Manuale utente

Raisecom

Raisecom RCMS2101-30-FV35 Manuale utente

Raisecom

Raisecom RC3000-15 Guida

Raisecom

Raisecom RCMS2201-30 Manuale utente

Raisecom

Raisecom RCMS2504-120 Manuale utente

Raisecom

Raisecom OPCOM3100-155 Manuale utente

Raisecom

Raisecom RC802-60B Series Manuale utente

Raisecom

Raisecom RCMS 2811 Manuale utente

Raisecom

Raisecom RCMS2601-30 Manuale utente

Raisecom

Raisecom RCMS2504-240 Manuale utente

Raisecom

Raisecom RC852-30-FV35 Manuale utente

Raisecom

Raisecom RC831-240E Manuale utente

Raisecom

Raisecom RC832-30 Manuale utente

Raisecom

Raisecom RC3000E Specifiche tecniche

Raisecom

Raisecom RCMS2201 Manuale utente

Raisecom

Raisecom RC831-60-FV35 Series Manuale utente

Raisecom

Raisecom RC802-240B Manuale utente

Raisecom

Raisecom RC801 Manuale utente

Raisecom

Raisecom RC831-120-M Manuale utente

Raisecom

Raisecom RC3000 PCM Manuale utente

Raisecom

Raisecom RC801 Manuale utente

Raisecom

Raisecom RCMS2304-240 Manuale utente

Raisecom

Raisecom RC3000 Manuale utente

Raisecom

Raisecom RCMS2401-30 Manuale utente

Manuali Multiplexer popolari di altre marche

Campbell

Campbell AM416 Manuale utente

Paradyne

Paradyne SIM2000 Manuale utente

Panasonic

Panasonic WJFS616 - SWITCHER Manuale utente

Lanex

Lanex TM-77 Manuale utente

Bosch

Bosch VSS8394/01T Manuale utente

Quark-Elec

Quark-Elec QK-A035 Manuale utente

ADTRAN

ADTRAN Frameport 768 Manuale utente

Elo TouchSystems

Elo TouchSystems E247 Manuale utente

Paradyne

Paradyne Hotwire 8786 Manuale utente

RFL Electronics

RFL Electronics 9508D UCC Manuale utente

Miranda

Miranda AMX-101i Manuale di istruzioni

ShipModul

ShipModul MiniPlex-AIX NMEA-0183 Manuale utente

GE StoreSafe SDVR-10 Manuale utente

Pickering

Pickering 40-613 Manuale utente

Pickering

Pickering 40-667C Manuale utente

American Fibertek

American Fibertek MTX-8410C Manuale utente

ADC

ADC HiGain ELU-319 5E Manuale utente

Paradyne

Paradyne Hotwire 8774 Manuale utente