IDM MSTP155-16 Multiservice Transmission Platform User' Manual

 

 

 

 

Multiservice Transmission Platform

 

User’s Manual

 

 

 

 

 

 

 

 

 

 

Apply to

IDM MSTP155-16

Beijing Raytrans Digital Technology Co., Ltd

 

 

 

 

To the user

 

(1)                      Thank you for using our products. Within the scope of this equipment is used in design has a good and reliable performance, But still should avoid man-made damage to the equipment. Before using this product, read the user manual carefully, properly keep, Using for reference.

(2)                      Please check the model before installing this product, according to the requirements of user manual and installation

(3)                      Don’t make this product in the rain or be affected with damp in order to avoid damage

(4)                      Don't put anything on the power cable, don't put cable tie or encase.

(5)                      The power adapter, and other equipment shall be connected to each other tightly fitting

(6)                      Please note that the equipment clean, When necessary, can use soft cotton cloth to wipe.

(7)                      Please note that don't block ventilation cooling hole

(8)                      Please don't repair equipment, besides there is a clear instructions in the manual. When the equipment running abnormal please power off immediately and contact the company's after-sales service

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copyright statement

All parts of the product, including the manual and spare parts, etc. Its ownership for our company. Without permission, can’t be copied, translated, or transmitted in any form in the network.

To modify the product and this manual in any form of product function can not achieve or to other products, personal impact, the company will not take any responsibility.

Content

Multiservice Transmission Platform        

User’s Manual        

Apply to        

To the user        

Copyright statement        

1.        overview        

1.1.        Relevant Standards        

1.2.        Features        

1.3.        Technical index        

1.3.1.        Environmental requirement        

1.3.2.        Power        

1.3.3.        Consumption        

1.3.4.        Interface type        

1.3.5.        STM1 optical interface performance metrics        

1.3.6.        Between R and S point the transmission performance        

1.3.7.        Jitter of the interface indicators        

1.3.8.        Jitter of SDH equipment        

1.3.9.        PDH Interface jitter        

1.3.10.        E1 interface        

1.3.11.        Repeater jitter transfer requirements        

1.3.12.        Optical interface jitter tolerance input        

1.3.13.        Mapping the jitter        

1.3.14.        Combination of jitter and drift        

1.3.15.        Clock features        

1.3.16.        Ethernet network interface        

1.3.17.        RS232 interface (Console port)        

1.4.        Equipment protection        

1.4.1        The power supply and backup        

2.        Structure        

2.1.  Front panel        

2.1.1.        Front panel description        

2.1.2.        Indicator light        

2.2.        Rear panel        

2.3.        Business Line sequence        

3.        System introduction        

4.        Business card introduction        

4.1.        FXO card        

4.2.        FXS card        

4.3.        E1 card        

4.4.        EOP card        

4.5.        Ethernet card        

4.6        USER card        

4.6.1.        Hotline telephone card        

4.6.2.        Magnet telephone card        

4.6.3.        2100Hz Carrier magnetic relay card: 2100Hz        

4.6.4.        Em2/4 card        

4.6.5.        V.24 card        

5.        Application        

5.1.        Point to point transmission        

5.2.   Chain network        

5.3.   Ring network        

6.        Equipment install requirement        

6.1.        Machine room environment requirement        

6.1.1.        Interspace requirement        

6.1.2.        The power supply system requirements        

6.1.3.        Grounding system requirements        

6.1.4.        Humidity/temperature requirements        

6.1.5.        Anti-static requirements        

6.1.6.        The requirement of magnetic disturbance        

6.1.7.        Lightning protection requirements        

6.1.8.        Install Caution        

7.        Installation equipment        

7.1.        The flow chart of equipment installation        

7.2.        Installation tools, equipment and instrument        

7.3.        Install ground        

7.3.1.        Install ground principle        

7.3.2.        Ground installation steps        

7.4        Install power cord        

7.4.1.        Charged operation principle        

7.4.2.        Install Power cord step        

7.5        Connection configuration terminal        

7.5.1.        The port is introduced        

7.5.2.        Configuration interface cable        

7.6        Connect the signal cable        

7.6.1.        Connect STM1 optical port        

7.6.2.        Connect Ethernet interface        

7.6.3.  Connect FXO/FXS interface        

7.6.3        Connect E1 interface        

8. Equipment Common troubleshooting        

8.1.  Optical alarm        

8.2.  Ethernet don’t work        

8.3.    Telephone don’t work        

 

 

 

 

1.       overview

 

SDH network has powerful protection and recovery ability and fixed time delay. MSTP

technology based on SDH redundant optical ring network is able to provide the users from the edge of networks with various access technologies and various types of network options. MSTP is evolving from an all-data transmission network to a multi-service platform which integrates both transmission network and access network, based on which, Beijing Raytrans Digital Technology Co., ltd developed the new generation multi-service transmission equipment IDM-MSTP155-16 as a response to the market demand. IDM-MSTP155-16 is able to meet users’ needs not only for the access of broadband services and narrowband services, but also for greater bandwidth and more reliable communication protection. Therefore, this equipment has become one of the most popular products on the fiber access market.

 

IDM-MSTP155-16 is developed based on SDH and EOS technology, which is fully compliant

with ITU-T standard. This equipment provides users with two (A and B) STM-1 optical interfaces and at most 6 Ethernets ports. It features VC-12 cross-connect and channel protection. Besides,

IDM-MSTP155-16 can be used as an add-drop multiplexer or a terminal multiplexer to establish

chain networks and ring networks of point-to-point and point-to-multipoint.

 

This equipment has consummate line protection, acousto-optical alarm and network management/monitoring functions, which greatly satisfies current access networks and private

networks’ needs for multi service, greater bandwidth, high reliability and integration of access

equipments and transmission equipments

 

All components the IDM-MSTP155-16 adopts are on industrial level, electromagnetic

compatible and with interface protection design. Due to the low power consumption and favorable

shock resistance, this equipment is suitable for a variety of electromagnetic environment and flexible conditions.

 

The laconic network management of IDM-MSTP155-16 supports unified management of

disjunct subnets and RMON (Remote Network Management) by internet. The NMS includes functions like equipment configuration, fault query, data collecting and real-time monitoring of the network operating status.

 

 

 

 

1.1       Relevant Standards

ITU-T G.664  Optical safety procedures and requirements for optical transport systems.

ITU-T G.703  Physical/electrical characteristics of hierarchical digital interfaces.

ITU-T G.707  Network node interface for the synchronous digital hierarchy (SDH).

ITU-T G.781  Synchronization layer functions.

ITU-T G.782  Types and general characteristics of synchronous digital hierarchy (SDH)

Equipment.

ITU-T G.783  Characteristics of synchronous digital hierarchy (SDH) equipment functional

Blocks.

ITU-T G.784  Synchronous digital hierarchy (SDH) management.

ITU-T G.803  Architecture of transport networks based on the synchronous digital hierarchy

(SDH).

ITU-T G.811  Timing characteristics of primary reference clocks.

ITU-T G.813  Timing characteristics of SDH equipment slave clocks (SEC).

ITU-T G.823  The control of jitter and wander within digital networks which are based on the

2048 kbit/s hierarchy.

ITU-T G.825  The control of jitter and wander within digital networks which are based on the

synchronous digital hierarchy (SDH).

ITU-T G.826  End-to-end error performance parameters and objectives for international,

constant bit-rate digital paths and connections.

ITU-T G.841  Types and characteristics of SDH network protection architectures.

ITU-T G.957  Optical interfaces for equipments and systems relating to the synchronous

digital hierarchy.

ITU-T G.958 Digital line systems based on the synchronous digital hierarchy for use on

optical fiber cables.

ITU-T X.86 Ethernet over LAPS

ITU-T G.7041 Generic framing procedure (GFP)

ITU-T G.7042 Link capacity adjustment scheme (LCAS) for virtual concatenated signals

IEEE 802.1d Spanning Tree

IEEE 802.1q Virtual LANs；VLAN

IEEE Std 802.3 CSMA/CD

IEEE 802.1p General Registration Protocol

RFC2615(1999) PPP over SONET/SDH

RFC1661(1994) Point-to-Point Protocol

 

 

 

 

 

 

 

1.2       Features

(1)                      Standard 19-inch 1U chassis structure, easy to install.

(2)                      220VAC/- 48VDC double power supply.

(3)                      2 STM-1 optical interfaces(SFP) with 1+1 channel protection.(Either one fails, the other will back it up)

(4)                      2 V.35/V.11 [N × 64K (N = 0 ~ 31)] channels.

(5)                      Integration of SDH, PCM, PDH and Ethernet.

(6)                      Provide up to 4 Ethernet networks with physical isolation.

(7)                      Provide 3slots can insert E1card, FXO/FXS card, V24/V35 card, Ethernet extend card, video card etc, According to the demand for the flexible configuration

(8)                      Support networking mode: point to point, chain type, tree type, star type, ring type etc

(9)                      In compliance with the ITU-T G.813 standards.

(10)                      Faultless network management feature, online real-time monitoring.

(11)                      Cross capacity is 128×128 VC-12

(12)                      Provide F network managerment interface, Network management interface ITU - T advice configuration, alarm, performance and maintenance, security, and so on five big functions.

(13)                      Provide environmental temperature monitoring equipment, and by now the real-time temperature control fan is turned on and off.Provide environmental monitoring at the same time also can save power consumption

(14)                      Clock source can choose outside line clock, the clock and the free oscillation

 

 

1.3       Technical index

1.3.1                      Environmental requirement

Working temperature: 0～50℃

Storage temperature: -20℃～＋70℃

Relative humidity: 95%

1.3.2                      Power

Power supply: AC220V/DC-48V

DC-48V input range: DC -36V～DC -72V

AC220V input range: AC176V～ AC264V

 

1.3.3                      Consumption

Consumption: 10W(25℃)

1.3.4                      Interface type

 

1.3.5                      STM1 optical interface performance metrics

Optical interface indicators according to ITU-T suggestion

 

1.3.6                      Between R and S point the transmission performance

The transmission performance between R and S point should comply with ITU - T G. 957 the requirements of section 5

 

1.3.7                      Jitter of the interface indicators

1.3.7.1  SDH input jitter and drift tolerance

SDH equipment input jitter tolerance (unit: UIp-p)

 

SDH input jitter and drift tolerance

1.3.8                      Jitter of SDH equipment

No input jitter, in SDH adopts relay output 12 KHZ measuring jitter is not greater than 0.01 UIrms high-pass filter, Synchronization jitter input port, the jitter produced on the interface of terminal device, measuring more than 60 seconds should comply with the following table:

 

 

1.3.9                      PDH Interface jitter

Jitter on the PDH interface with the following bandpass filter test, PDH network limits in the PDH interface to allow maximum output jitter, as shown in the table below, In SDH equipment, PDH interface jitter must be better than the above value.On the SDH and PDH border, jitter suit for these values. The PDH interface maximum allowable output jitter.

 

1.3.10                      E1 interface

E1 branch interface index

 

E1 input jitter and drift tolerance

UIp-p				f(Hz)							Pseudo random test signal
A0	A1	A2	A3	f0	f10	f9	f8	f1	f2	f3
36.9	1.5	0.2	18	1.2×10-5	4.88×10­3	0.01	1.667	20	2.4K	18K	215-1

 

 

 

1.3.11                      Repeater jitter transfer requirements

 

 

 

1.3.12                      Optical interface jitter tolerance input

 

 

1.3.13                      Mapping the jitter

When the PDH mapped into SDH, will produce a jitter, called mapping jitter.

 

1.3.14                      Combination of jitter and drift

In SDH system, generally existing mapping jitter, and a pointer adjustment jitter, jitter produced by their combination is called jitter. For combination jitter, ITU - T the following four tentative test sequences, they basically represents the combination of shaking situations.

 

A pointer to a single polar opposite

 

Rules of the single pointer and a double pointer: T2≥34mS T3=0.5mS－2mS

Miss a pointer rules single pointer: T2＞0.75s

 

A pointer to a double reverse polarity

 

Combination of jitter specification

1.3.15                      Clock features

 Introduction of the scope: 4.6ppm

Lead to scope: 4.6ppm

STM-1 interface output jitter: 0.5UI(B1：500Hz～1.3MHz)；0.1UI(B2：65kHz～1.3MHz)；1UI＝6.43ns

Input jitter tolerance: meet G.825 suggestion

The external clock interface free oscillation frequency: 2.048Mbit/s±4.6ppm

The external clock interface type: HDB3

The external clock interface line impedance: 75Ω

The external clock connector: CC4B

External clock output waveform: meet G.703 2.048Mbit/s

External clock output jitter: 0.05UI(20Hz～100Hz)；1UI＝488.28ns

The Jitter limit of the external clock input: meet G.813 suggestion

 

1.3.15.1                      The clock working mode

Locking mode: The frequency of the output clock locked in the input effective clock source. Input valid clock sources include: external clock, STM 1 line clock;

Holdover mode: When all the input clock source fails, the clock function block of memory circuit to keep the output clock frequency in the final locking frequency

Free-run mode: Without locking the clock source, the clock function block internal crystal oscillation circuit to output free oscillation of the clock.

 

1.3.15.2                      The clock control mode

Network management control mode: Select the clock working mode (Free vibration, forced to keep and track)

The clock function block control mode: The clock function block according to the signal quality and SSM information choose according to the clock level .

The clock priority arrangement: Network management level is higher than the unit automatic control level, Unit control, according to the clock priority order select lock clock, the clock priority order is as follows:

(G.812 clock)→Line clock→Holdover clock→internal clocking。

Internal clock as a system failure condition, in order to guarantee the effectiveness of the communication of the lowest option.

 

1.3.15.3                      Free oscillation and keep the mode frequency precision

free-run mode: ≤±4.6×10-6

Holdover mode: ≤±0.37×10-6(20～30℃，24hours)

 

1.3.15.4                      Capture range and loss of lock

Capture range and loss of lock: ≥±4.6×10-6

 

1.3.15.5                      The clock source switching

The switch can be divided into automatic switch and compulsory, Automatic switch: The clock source will be in accordance with the order of the preset, according to the current external input signal switch; Forced to switch can through the network management system to control.

When switching does not cause any error on the business, all kinds of switching index conforms to the ITU-T related regulations.

 

1.3.16                      Ethernet network interface

Meet IEEE802.3 standard

Interface mode: 10Base-T

Connector Type: RJ45

 

1.3.17                      RS232 interface (Console port)

Connector Type: RJ45

Interface mode: RS232

Interface rate: 9600bps

 

1.4       Equipment protection

1.4.1                      The power supply and backup

The equipment adopts double power supply and backup power supply method, can select AC220V or DC-48V

Each independent input to the equipment, each power corresponding to a power plate.

 

1.4.2 Service protection

Our equipment provide linear 1+1 path protection, protect rearrangement of time less than 50ms.

Device configuration data stored in a flash, every time after power on automatically load the last configuration data storage, ensure no lose when power supply drop configuration data.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.       Structure

Our device is 1U, 19’ inch chassis, Compact design, make full use of the space of the front panel, convenient for user operation. Front panel set external clock interface, optical interface, Ethernet optical, Ethernet network managerment interface, CPU console interface, power switch and indicator light

 

2.1 Front panel

 

2.1.1                      Front panel description

 

 

2.1.2                      Indicator light

 

2.2       Rear panel

 

This equipment has AC220V and DC-48V two power supply modes, Each power supply adopts double power supply, As a backup, One of the power failure does not affect the normal transmission of business.

 

2.3       Business Line sequence

 

 

 

3.       System introduction

4.       Business card introduction

4.1       FXO card

Ø                      FXO card is used to User voice signal and ST - BUS motherboard signal transformation; Subscriber line state signal and digital signal conversion between; And provide identification and status information to network management.

Ø                      FXO card is mainly used in automatic connection user telephone exchange, common battery telephone exchange interface. Usually used with FXS.

Ø                      FXO card support “Caller ID Display” When the telephone ringing corresponding light is on.

Ø                      FXO card provide 8 channels telephone business, each FXO card has 4 user interface. Each interface provide 2 channels telephone. LED1-LED8 is Interface work status indicator

 

4.2       FXS card

Ø                      FXS card is used to User voice signal and ST - BUS motherboard signal transformation, feed to the telephone users, overvoltage and overcurrent protection, Called to the user when the fluid flow, Monitor users pick hang up, Subscriber line state signal and digital signal code conversion, And provide identification and status information to network management.

Ø                      FXS card can be used for automatic telephone billing, common battery telephone, billing telephone etc remote phone interface.

Ø                      FXO card support “Caller ID Display” When the telephone ringing corresponding light is on.

Ø                      FXO card provide 8 channels telephone business, each FXO card has 4 user interface. Each interface provide 2 channels telephone. LED1-LED8 is Interface work status indicator

 

4.3       E1 card

Each E1 card provide 8 channels E1 business, E1 interface is DB37 interface, when transfer E1 business need connect CC3-8 connector

 

4.4       EOP card

Our equipment provide 4 independent EOS channel, If need some extend Ethernet channel bandwidth is not big, such as temporary emergency use of Ethernet can use E1 to Ethernet converter (1E1, 4E1, 8E1), At this point in the end can use standard protocol E1 to Ethernet converter.

4.5       Ethernet card

Each Ethernet card can provide 8 channels 10M/100M Ethernet interface. Used to EOS Ethernet interface extension to 8 exchangeable Ethernet interface.

 

 

 

 

EOS card indicator light description

indicator	Function	status	Status
LINK	Electrical port connect/ Work instructions	on	normal
		flicker	Sending data
		off	Electrical port ununited

 

 

 

 

 

 

 

 

4.6       USER card

User card can provide 4 slots, corresponding to the four user interface, each slots can insert FXO card, FXS card, Hotline card, magnet card etc business cards, each card can provide 2 channels business. By configuring different business card can meet the business needs of different users. yellow light is first channels business indicator, green light is second channels business indicator.

 

4.6.1                      Hotline telephone card

Ø                      Hotline telephone card is used to User voice signal and ST - BUS motherboard signal transformation, feed to the telephone users, overvoltage and overcurrent protection, Called to the user when the fluid flow, Monitor users pick hang up, Subscriber line state signal and digital signal code conversion, And provide identification and status information to network management.

Ø                      Hotline phone CARDS are mainly used to direct phone without switches between the Important leadership or department, must be used in match on both ends.

Ø                      Hotline telephone card each card provide 2 channels hotline telephone.

 

4.6.2                      Magnet telephone card

Ø                      Magnet telephone card is used to User voice signal and ST - BUS motherboard signal transformation; Subscriber line state signal and digital signal conversion between; And provide identification and status information to network management.

Ø                      Magnet telephone card is used to between Magnet telephone or Magnet switch, and between magnet telephone and magnet switch connect.

Ø                      Each magnet telephone card provide 2 channels magnet telephone

 

4.6.3                      2100Hz Carrier magnetic relay card: 2100Hz

4.6.4                      Em2/4 card

4.6.5                      V.24 card

5.       Application

5.1       Point to point transmission

 

5.2 Chain network 

5.3 Ring network

 

6.       Equipment install requirement

6.1       Machine room environment requirement

6.1.1                      Interspace requirement

The distance of cabinet side with metope shouldn’t be less than 0.1m, behind the cabinet with metope distance should not be less than 0.8 meters, Distance between the adjacent 2 rows of racks shall be not less than 0.8 meters.

Put in the work station, don't make close to face computer screen doors and Windows, In terms of room height, required equipment installed at the bottom of the face and under beam or duct under the net height of not less than 3 metres.

 

6.1.2                      The power supply system requirements

Using AC power distribution system,  input voltage: 100～240VAC，50～60Hz.

Using DC power distribution system: input voltage, -48V

Ø                      Should choose reliable, stable ac mains supply, power should meet the requirements. Can be converted by power conversion equipment, USES the 220 v single-phase three-wire system.

Ø                      The number of the power cord of the specifications of the equipment should be considered and the power consumption situation to calculate, meet the requirements of the relevant specification, consider adequate safety coefficient.

Ø                      General should have standby power, Equipped with enough capacity of UPS or dc to ac inverter.

Ø                      Ac power distribution system should be independent to communicate safely

 

6.1.3                      Grounding system requirements

Grounding resistance<2

protective ground wire, Wire diameter should not less than 20m㎡, length should not less than 30m.

machine room grounding system should also meet the following requirements:

Ø                      By combining vertical grounding of grounding body always collected online collection of level ground points line into the computer room, Rack grounding line nearby introduced level points collected online.

Ø                      Cabinet on the dc power supply work collected online introduction should begin from the ground

Ø                      All communication device in the machine room, Besides from points collected online guide to the nearest grounding line, Should not make installation bolt reinforcement and construction steel touching one another and form electrical connectivity

Ø                      Ground and signal line winding don't walk parallel lines or are to reduce the mutual interference

Ø                      When the equipment adopts ac power supply, Must use protect joint power socket, The protection of the power point should be reliable grounding in the building.

power socket

  Attention：

Cabinet equipment work grounding, chassis and cabinet should do protect the earth.

 

6.1.4                      Humidity/temperature requirements

Ø                      In order to guarantee the normal work of the equipment and prolong the service life of the machine room of domestic demand to maintain a certain temperature and humidity.

Ø                      Temperature range: 0～40℃, Relatice humidity Range: 5～90%.

Ø                      The air is better liquidity, At least 100 mm distance space near the fan.

 

6.1.5                      Anti-static requirements

Equipment taken various measures to prevent static electricity, If the environment of the electrostatic exceeds a certain tolerance, still it's easy for circuit and even the whole machine, therefore should be considered in the design of equipment room environment and anti-static.

Ø                      The floor surface resistance and resistance value system is 1×105Ω to 1×109 Ω.

Ø                      Maintain appropriate temperature and humidity conditions .

Ø                      Without permission or without wearing anti-static wrist strap, can not touch and plug printed circuit board components, also may not touch other components and spare parts, etc.

Ø                      Spare PCB components and maintenance components must be on the rack or anti-static shielding cabinets/shielding bag for storage.

 

6.1.6                      The requirement of magnetic disturbance

Various interference sources, whether from external equipment application system, or from within, are based on capacitive coupling, inductance coupling, electromagnetic radiation, the public impedance coupling and wire way of conduction impact on equipment.

To the grid power supply system to adopt effective interference measures

Equipment work don't grounding device and power equipment grounding device or to share

Away from the high power radio transmitters, radar transmitters, high frequency large current device

 

6.1.7                      Lightning protection requirements

Although in lightning protection equipment made a lot of consideration, take the necessary measures. But when lightning intensity beyond a certain range, is still likely to cause damage to equipment.

Room should have the measures to prevent direct lightning and the lightning current intrusionIn areas where the dore, should prevent flanking the thunder protection measures

Room under the lightning protection measures should be taken: the main building at the site of the buildings are vulnerable to lightning installed lightning protection network or lightning protection zone

 

6.1.8                      Install Caution

Ø                      The stent is firm and reliable, to avoid shaking. It is recommended to use standard cabinet

Ø                      Device is placed away from the damp and away from heat source

Ø                      Grounding device correctly

Ø                      Wear anti-static wrist in the process of equipment installation and maintenance, and ensure the anti-static wrist good contact with skin

Ø                      Properly connected device interface cable

Ø                      Note that with laser safety. Don't use eyes look straight into the light emission of the laser mouth or connected with optical fiber connector

Ø                      Suggest user to use UPS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.       installation equipment

7.1       The flow chart of equipment installation

 

 

7.2       Installation tools, equipment and instrument

Universal tool

Fastening Tools：straight screwdriver M3~M6, cross screwdriver M3~M6.

Measuring tool: flexible rule, straightedge.

Other tool: Hairbrush, tweezers, electric soldering iron, tin wire, nipper pliers, diagonal pliers, vice.

Professional tool

Grounding resistance measuring instrument, antistatic wrist strap, wire stripper, crimping pliers.

Cables 

Protection of ground wire and power cable, Console cable, An optional cable.

Equipment and instrument

Configure terminal (PC), Optional modules related equipment, multimeter.

 

7.3       Install ground

7.3.1                      Install ground principle

Ø                      Chassis ground must be good to the earth, so that the induction, leak electricity can safely into the earth, and enhance the ability of resistance to electromagnetic interference, the external network connection.

Ø                      Equipment the normal connection of ground wire is the primary security equipment lightning protection, anti interference, and require the user to ground must be connected correctly.

Ø                      If the equipment is not installed on the standard rack, the ground wire is a must. It is the important guarantee of lightning protection, prevent interference. If the equipment is installed to the standard cabinets, does not require must connect the ground wire, but requires cabinet must have a good grounding properties.

7.3.2                      Ground installation steps

There is a grounding terminal behind of the equipment.   show

(1)       Unscrewed the nut on the chassis grounding terminals

(2)       One end of the grounding line set in the bottom panel, grounding on the column

(3)       Put a fixed nut and tighten

(4)       On the other side of the earth wire received earthing terminal

 

  Warning:

For alternating current devices, under normal circumstances, the use of ac input power cord can be achieved safely grounded. But conditions are not in the power cord for the earth or grounding protection under the condition of incomplete, In order to use the product more reliably, it is recommended that the use of grounding column on the chassis

Must be good grounding equipment when work

 

7.4       Install power cord

7.4.1                      Charged operation principle

Before operation, it is necessary to remove jewelry such as rings, watches, bracelets and so on, Metal objects in contact with the "power" and "earth" may cause a short-circuit caused damage of components

when the power is connected, do not touch the power and be careful to get an electric shock