Zhejiang Dahua Vision Technology DH-PFM880 5G Wireless Video Transmission Device CPE User Manual

Zhejiang Dahua Vision Technology Co., Ltd 5G Wireless Video Transmission Device CPE Users Manual

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DH PFM880 User Manual HTML Version

Users Manual

5.8GHz Wireless Bridge/CPE/AP

Model: DH-PFM880

User Manual

Version： 1.0.1563

Page 1

Contents

Versions .................................................................................................................. 3

References ............................................................................................................. 4

Purpose .................................................................................................................. 4

Notes ...................................................................................................................... 4

Definitions ............................................................................................................. 4

1Product Overview ................................................................................................. 5

1.1Product Advantages ....................................................................................................... 5

1.2Electrical Specifications .................................................................................................. 7

1.3Features ............................................................................................................................ 8

1.4Using Example ................................................................................................................. 9

1.5Applications ................................................................................................................... 10

1.6Hardware Overview ...................................................................................................... 10

2Installation ........................................................................................................... 10

2.1DH-PFM880 installation ............................................................................................... 10

2.2Connections................................................................................................................... 12

3Quick Configuration ........................................................................................... 13

3.1Log in ............................................................................................................................. 13

3.2Quick Configuration of the Device ............................................................................. 16

4TDMA ................................................................................................................... 18

5Status .................................................................................................................... 19

5.1Status .............................................................................................................................. 20

5.2Monitor .......................................................................................................................... 21

6Wireless ................................................................................................................ 22

7Network ............................................................................................................... 25

7.1Router mode ................................................................................................................. 25

7.2Bridge mode .................................................................................................................. 27

7.3Management ................................................................................................................. 27

7.4Firewall ........................................................................................................................... 27

7.5IP Aliases ....................................................................................................................... 27

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7.6Static Routes ................................................................................................................ 28

7.7Traffic Shaping ............................................................................................................ 28

7.8VLAN Settings .............................................................................................................. 29

8Advanced ............................................................................................................. 31

9System .................................................................................................................. 32

10Tools ..................................................................................................................... 34

11AC NMS ................................................................................................................ 37

12Logout .................................................................................................................. 38

13Network Configuration Examples .................................................................... 38

13.1AP and Station Network .............................................................................................. 38

13.2WDS AP, WDS Station, WDS Repeater Network ....................................................... 39

13.3Router Mode ................................................................................................................. 40

Appendix-A Troubleshooting ................................................................................... 41

FIGURE 1 DH-PFM880 USING EXAMPLES....................................................................................................9

FIGURE 2 METAL MAST-MOUNT SETS.......................................................................................................11

FIGURE 3 PACKAGE CONTENTS...................................................................................................................11

FIGURE 4 WATER-PROOF CONNECTOR AND THE ETHERNET CABLE..............................................................12

FIGURE 5 DH-PFM880 INSTALLATION ON A MAST.....................................................................................12

FIGURE 6 CONNECTIONS AT BRIDGE MODE.................................................................................................13

FIGURE 7 LOCAL AREA CONNECTION PROPERTIES.......................................................................................14

FIGURE 8 IP SETTINGS...............................................................................................................................15

FIGURE 9 LOG IN INTERFACE.......................................................................................................................16

FIGURE 10 STATUS PAGE............................................................................................................................16

FIGURE 11 WIZARD-NETWORK..................................................................................................................17

FIGURE 12 WIZARD-WIRELESS..................................................................................................................18

FIGURE 13 WIZARD-FINISH.......................................................................................................................18

FIGURE 14 TDMA SETTING.......................................................................................................................19

FIGURE 15 STATUS....................................................................................................................................20

FIGURE 16 THROUGHPUT MONITOR...........................................................................................................21

FIGURE 17 ROUTE TABLE............................................................................................................................21

FIGURE 18 STA INFORMATION OF AN AP...................................................................................................22

FIGURE 19 AP INFORMATION OF A STATION...............................................................................................22

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FIGURE 20 WIRELESS.................................................................................................................................23

FIGURE 21 CONNECTION FIGURE OF ROUTER MODE....................................................................................25

FIGURE 22 NETWORK-ROUTER MODE........................................................................................................26

FIGURE 23 FIREWALL.................................................................................................................................27

FIGURE 24 TRAFFIC SHAPING.....................................................................................................................28

FIGURE 25 VLAN SETTING(1)...................................................................................................................30

FIGURE 26 VLAN SETTING (2)..................................................................................................................30

FIGURE 27 COMMONUSAGE.......................................................................................................................31

FIGURE 28 ADVANCED..............................................................................................................................31

FIGURE 29 SYSTEM....................................................................................................................................33

FIGURE 31 AC NMS...............................................................................................................................38

FIGURE 32 AP AND STATION NETWORK......................................................................................................38

FIGURE 33 WDS NETWORK......................................................................................................................39

FIGURE 34 ROUTE MODE...........................................................................................................................40

TABLE 1 VERSIONS......................................................................................................................................3

TABLE 2 DEFINITIONS..................................................................................................................................4

TABLE 3 ELECTRICAL SPECIFICATIONS............................................................................................................7

TABLE 4 HARDWARE INFORMATION............................................................................................................10

TABLE 5 CONFIGURATIONS SHOWN IN STATUS...........................................................................................20

TABLE 6 MAIN PARAMETERS AT THE FACTORY SETTINGS................................................................................34

 Versions

Table 1 Versions

Version Date History Author

1.0.1563 2016-1-5 Created Tian Jian Feng

Page 4

 References

 Purpose

This document is proposed for the users of DH-PFM880 devices, helping them to

configure the device and list the troubleshooting, so that the devices can be used

successfully quickly.

This document mainly contains the following parts: hardware information, web

configuration menu descriptions, network configuration examples, and

troubleshooting. It can help the customers quickly be familiar with the devices and

use them correctly.

 Notes

This document is to characterize the DH-PFM880 series of devices. Please read the

document carefully before setting up device. Any damage which is caused by

inappropriate use will not be covered under the warranty.

 Definitions

Table 2 Definitions

No. Items Description

1 DH-PFM880 Outdoor, long distance AP/CPE/Bridge devices

2 XTrans

XTrans is a series of wireless technologies,

including TDMA, 5M/10M/20M/40MHz bandwidth

support, intelligent rate control, Auto ACK

Time-out adjust, having the advantage of long

transmission range, high date rate and robust

transmission.

3 AP Access point

4 Station(Client)

WIFI station that can be associated to an access

point.

5 CPE

Customer-premises equipment: it is

any terminal and associated equipment located at

a subscriber's premises and connected with

a carrier's telecommunication channel at

the demarcation point.

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1 Product Overview

DH-PFM880 is a powerful WIFI Bridge/AP/CPE device, which allows WIFI access

and video/audio/data transmission device, enables long-range, fast speed and

robust wireless connections. XTrans technology, DH-PFM880 has the advantages

of long-distance, high-throughput, and between point-to-multi-point

performance.

XTrans technologies include TDMA, 5M/10M/20M/40MHz bandwidth, intelligent

rate control, Auto ACK Time-Out Adjust and so on. TDMA technology solves the

problems of hidden-node problem in the 802.11 network. 5M/10M/20M/40MHz

bandwidth can be flexibly configured by the uses in different working scenario to

achieve the best link quality. Intelligent rate control algorithm can be adapted to

quick channel quality variations automatically, thus stabilizing the wireless

throughput. ACK Time-Out Auto Adjust can automatically detect the distances of

the DH-PFM880 devices, and thus adjust the wireless parameters to achieve the

best wireless link quality.

The best transmission range and max speed of DH-PFM880 can be 0~15Km and

300Mbps, making it suitable for many applications of WIFI Bridge/AP/CPE,

especially have advantages for point-to-multi-point communication.

1.1 Product Advantages

The DH-PFM880 has the industrial leading technology, owing the performance

capability of a wireless base station with only a small form factor, furthermore, it

has very attractive low cost.

DH-PFM880 has the following advantages compared to the competitors:

1. Embedded TDMA technology

DH-PFM880 devices is embedded with TDMA technology, including TDMA,

5/10/20/40MHz bandwidth, intelligent rate control, Auto ACK Time-out adjust. It

makes the device have longer transmission distance, higher throughput and better

point-to-multi-point performance.

2. Longer transmission distance, higher throughput

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The longest transmission distance of DH-PFM880 can be as far as 25 km, and the

max throughput can be 300Mbps，which satisfy the needs of most of the

applications.

3. Embedded hardware watchdog

DH-PFM880 is embedded with hardware watchdog, which is used to monitor the

working status of the device. Once the system is not working properly, the

DH-PFM880 device can be rebooted to guarantee the stability of the system.

4. Software Ping watchdog function

DH-PFM880 software ping watchdog function enable the device periodically ping

another device associated to, so that it can detect if the system is working well. If

the wireless link is lost or there is any problem, the device is rebooted. This is

important because the devices can be restored to work automatically if there is

any problem, and avoid the extra human labour to maintain the outdoor devices.

5. More Non-standard channels availability

Currently most of the WIFI devices are working at standard 802.11 5.8GHz

frequency. However, standard 802.11 5.8GHz only provide limited channels, and

there is serious interference if there are a lot of 5.8G WIFI devices nearby.

DH-PFM880 support more channels near 5.8GHz band, and spread the band to

non-standard frequency part: 4920MHz-6100MHz。The advantage of working at

the non-standard band is to avoid the interference in the standard channels, and

the wireless throughput can be improved.

Note: Please confirm whether those non-standard channels are permitted locally

before using them.

6. Outdoor industrial product

DH-PFM880 device can work at all kinds of outdoor severe environments,

including -30 to 70 degree temperature, 5% to 95% humidity, while maintain good

performance.

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1.2 Electrical Specifications

The electrical specifications are shown are the following table:

Table 3 Electrical Specifications

Items Specifications

Standard IEEE802.11 a/n（2T2R 300Mbps）

Operation

Frequency

5.745～5.825 GHz(More Non-standard channels is

availability,4920MHz-6100MHz)

Modulation

Mode 802.11 a/n: OFDM

Antenna 16dBi

Antenna size Device:212.6*212.6*55mm,

ANT:450*140*35mm

Weight Device:2.8kg

ANT:1.26kg

Output

power ＋27dBm

Receive

Sensitivity -72dBm@65Mbps, -94dBm@6Mpbs

Date rate

11n:13.5/15/27/30/40.5/45/54/60/81/90/108/120/121.5/135

/150/162/180/216/240/270/300Mbps(HT40)

130/117/104/78/65/58.5/52/39/26/19.5/13/6.5Mbps(HT20)

：11a 54/48/36/24/18/12/9/6Mbps(adaptive)

Distance Outdoor open area: >=15 km

Power supply 802.3at PoE+

Interface PoE

Operation

Temperature -30℃～+70℃

Storage

Temperature -40℃～+85℃

Operation

Humidity 5～%95%RH

Encryption WPA-PSK/WPA2/CCMP(AES)/TKIP

Network Router/Bridge

Operation AP/Station/WDS AP/WDS Station/WDS Repeater

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Mode

Security MAC/IP filter, SSID hidden

Network

protocol TCP/UDP/ARP/ICMP/DHCP/HTTP/NTP

TDMA Supported (Avoid 802.11 hidden-node problems, and

improve the point-to-multi-point performance)

Auto ACK

timing Adjust Supported

Management

and Logs NTP, SNMP, Syslog, Telnet

Web based

Configuratio

Supported

Firmware

Update Supported

Bandwidth

supported 5M/10M/20M/40MHz

1.3 Features

y High performance 802.11n 2×2 MIMO chip

y Max transmission range: 0~3Km, and max transmission throughput:

300Mbps

y Integrated XTrans technology, including TDMA, intelligent rate control,

Auto ACK Time-out adjust

y TDMA solves the problems of hidden-node problem in the 802.11

network, thus having better long-distance and PTMP performance

y Support five operation modes: Access Point, Station, WDS Access Point,

WDS Station, WDS Repeater

y Support point-to-point, point-to-multipoint connection

y Unique RF and antenna design enables long-range transmission

y Wireless multimedia optimization technology guarantees video/audio

transmission QoS

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y Web based working scenario selection makes the installation and setting

much easier

y Reliable PoE power supply, support 802.3af standard

y Web-based configuration, easy to use

y Waterproof housing and accessory kit protects

1.4 Using Example

The DH-PFM880 usage example are shown in Figure 1, it can be used as WIFI AP,

CPE, or outdoor PTP, PTMP topology. Therefore, DH-PFM880 is suitable for

various applications like wireless video transmission, and wireless signal coverage.

Figure 1 DH-PFM880 using examples

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1.5 Applications

DH-PFM880 can be used widely in the following applications:

y Wireless video surveillance (free-way, city, police, oil pipeline, forest and

etc.)

y Carrier wireless backhaul and rural area internet last-mile wireless solution

y Enterprise local area network inter-connection

y WIFI signal coverage and rural wireless coverage

1.6 Hardware Overview

DH-PFM880’s hardware information is described in the following Table 4:

Table 4 Hardware information

Hardware Specifications

CPU/Baseband Radio Atheros AR9344

Memory 64MB DRAM, 8MB Flash

Physical Interface 1×10/100/1000M Base-TX (Cat. 5/5E,

RJ-45) Ports

Power supply 802.3at PoE+

2 Installation

This chapter describes how to install DH-PFM880 device in the bridge mode, and

the installation method of router mode can be seen in Chapter 7.

2.1 DH-PFM880 installation

DH-PFM880 is an outdoor product, and it has the aluminium shell, has the IP67

water-proof capability, and can operate at -30℃～+70℃ temperature.

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To make DH-PFM880 work well in all kinds of complicated outdoor environment,

the installation is very important. If it’s not installed well, the wireless link quality

will be affected, and the long-term working stability cannot be guarantee too.

Package contents:

Open the package carefully, and make sure that none of the following items listed

are missing：

y One DH-PFM880 device

y One 802.3at PoE+ power adapter

y One RJ45 water-proof connector

y One antenna

y Metal Mast-Mount Set, shown in Figure 2, and this set contains 3

components.

y One quick user manual

Figure 2 Metal Mast-Mount Sets

All the components in the package are shown in Figure 3:

Figure 3 Package contents

Installation steps:

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Installation of DH-PFM880 can follow the below steps:

1. Take all the contents from the package

2. Mount DH-PFM880 in a mast, and then fix the device on the mast as shown in

Figure 5.

3. After the DH-PFM880 is fixed on the mast, protect the Ethernet cable using the

water-proof connector.

Figure 4 Water-proof connector and the Ethernet cable

4. Screw the water-proof connector well on the DH-PFM880 shell.

Figure 5 DH-PFM880 installation on a mast

2.2 Connections

The connection of DH-PFM880 device to PoE and power supply is shown in Figure

6. TurobBridge5F has 1 RJ45 ports, and please connect the device with the PoE

power adaptor as shown in the Figure.

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Figure 6 Connections at Bridge mode

3 Quick Configuration

This chapter describe how to configure the device quickly.

3.1 Log in

To log in the DH-PFM880 device, user needs to configure the TCP/IP of your

computer first as the following steps:

1、Right click Local Area Connection icon of your computer and click properties,

then click Continue, the Local Area Connection Properties dialog box appears as

Figure 7.

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Figure 7 Local Area Connection Properties

2、Select Internet Protocol (TCP/IP) and click Properties button, and the following

dialog box appears：

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Figure 8 IP settings

3、In the above Figure 8, IP address should be set to 192.168.1.*, here * can be a

number between 1-255 (but not 36) since the DH-PFM880 default IP address is

192.168.1.36.

4、When the above IP setting is done, input the default IP 192.168.1.36 into the

address bar of your web browser, and the following log in interface appears as

shown in Figure 9.

5、In Figure 9, input the user name and password (default is admin/admin), click

Confirm, then you can log in to the web configuration menu of the DH-PFM880

device.

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Figure 9 Log in interface

3.2 Quick Configuration of the Device

The users will see how to configure the DH-PFM880 device quickly in this chapter.

1、 The first page shown after log in is the Status page, which indicates the

working status, current setting, software version and other information of the

DH-PFM880 device. User can switch to other pages by clicking the left main

menus in Figure 10.

Figure 10 Status Page

2、Click Wizard main menu, The page goes to Wizard-Network page as shown in

Figure 11, and this page helps to set the basic network parameters. The default

mode is Bridge mode, and the default LAN IP address is 192.168.1.36. If the user

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wants to configure the device to Router mode, please click Network in the main

menu.

Note: If several DH-PFM880 devices are connected in the Point-to-Point or

Point-to-Multi-Point topologies, they must be configured to different IP address

to avoid collisions.

Figure 11 Wizard-Network

3、After finishing the Wizard-Network settings, click next and it goes to

Wizard-Wireless page shown in Figure 12. The most used wireless mode are

Access Point and Station.

Station mode：The device acts as a WIFI station, and it can be connected to a

normal home access point or DH-PFM880 access point.

Access Point mode：The DH-PFM880 device acts as an access point, which allows

normal WIFI stations access. For detail settings of wireless mode, please click

Wireless in the main menu.

Note: If two DH-PFM880 devices need to be connected in point-to-point

topology, one of the device need to be configured as Access Point, and the other

one need to be configured as Station, and both of them should have the same

Encryption method.

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Figure 12 Wizard-Wireless

3、click “Next”, The last page of Wizard is shown in Figure 13. User can click

Change to save all the settings, and then click Apply the make the setting

effective, or click Last to modify the previous settings.

Figure 13 Wizard-Finish

4 TDMA

Currently, most of the outdoor bridge products are developed based on 802.11

protocols, however, it has the limitations of short-distance, hidden node problems,

and poor point-to-multi-point performance.

The TDMA technology utilizing a series of advanced technologies such as TDMA,

5M/10M/20M/40MHz bandwidth support, intelligent rate control, Auto ACK

Time-out Adjust, having the advantage of long transmission range, high date rate

and robust transmission.

Page 19

TDMA technology solves the problems of hidden-node problem in the 802.11

network infra-structure. 5M/10M/20M/40MHz bandwidth can be flexibly

configured by the uses in different working scenario to achieve the best link

quality. Intelligent rate control algorithm can be adapted to quick channel quality

variations, while stabilize the wireless throughput, thus suitable for long-distance

transmission. ACK Time-out Auto Adjust can automatically detect the distances of

the DH-PFM880 devices, and adjust the wireless parameters to achieve the best

link quality.

The TDMA settings is shown in the following Figure 14.

Figure 14 TDMA setting

To use the TDMA, the user needs to enable TDMA mode in the AP device, and set

a priority level in the station device. When several stations are connected to one

AP, different stations demand different throughput. If the station demands higher

throughput, its priority level can be set to High, otherwise set to Low. When the

stations demand the same throughput, their priority level can be set to the same

level.

Note: When using TDMA mode, the TDMA button need to be enabled at both AP

and station devices in the web-based configuration menu. The devices from other

vendors can not be connected to DH-PFM880 in the TDMA mode.

5 Status

Status is the first page shown after logging in. It shows the current configuration

and real-time monitoring of the device, seen in the following Figure 15. This page

is divided into 2 parts: Status and Monitor.

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Figure 15 Status

5.1 Status

All the configurations in Status page is shown in Table 5.

Table 5 Configurations shown in Status

Items Description Items Description

Device Name of the

device , for

example:

DH-PFM880

WIFI MAC WIFI MAC of this device

Firmware Version Software version

number

Channel

mode

Wireless communication

protocol, for example,

802.11b/g/n

WAN IP WAN IP address WAN

MAC

MAC of the WAN port

Network Mode Network mode:

Router or Bridge

SSID The name of the wireless

network

Frequency/Channel Wireless channel

chosen

Channel

Width

、、、5M 10M 20M 20/40

M AUTO

Wireless Mode Access Point,

Station,

WDS Station,

WDS Access Point,

WDS Repeater

Security Wireless encryption

method

Distance The distance Noise Floor Noise Floor value

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between two

associated devices

Signal level It indicates the

signal strength of

the device

Link Quality Quality of the

connection link

Tx/Rx Rate The date rate of

current device

during sending

and receiving data.

Time The real-time

5.2 Monitor

Throughput：The figure here monitors the real-time throughput of the wireless

link, shown in the following Figure 16.

Figure 16 Throughput monitor

Route Table：It is stored in a router that lists the routes to particular network

destinations, and in some cases, metrics (distances) associated with those routes.

The route table contains information about the topology of the network

immediately around it.

Figure 17 Route table

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Bridge Table：It lists all the devices that communicate through the DH-PFM880

device.

ARP Table ：It lists the IP address and MAC address of the devices that

communicate through the LAN port of the DH-PFM880 device.

AP/Station Information: Showing the status information of the associated

devices.

For example, if the DH-PFM880 device is an AP, and the associated device is a

Station, and this Station Information shows the related information of the Station

device in the Figure 18.

Figure 18 STA Information of an AP

If the DH-PFM880 is a Station, and AP Information shows the associated AP

device’s information, seen in Figure19.

Figure 19 AP Information of a Station

6 Wireless

Wireless is shown in Figure 20.

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Figure 20 Wireless

Wireless Mode: There are totally 5 wireless modes, including: Station, Access

Point, WDS Station, WDS Access Point and WDS Repeater.

Access Point: Access point.

Station (or Client): A client device that can connected to an AP.

WDS Station: Use WDS feature to link multiple APs in a network, all associated

stations from any AP can communicate with each other like in ad-hoc mode. WDS

station means this device is a station in WDS mode.

WDS AP： Use WDS feature to link multiple APs in a network, all associated

stations from any AP can communicate with each other like in ad-hoc mode. WDS

AP means this device is an AP in WDS mode.

WDS Repeater：A DH-PFM880 device can be configured to WDS Repeater mode,

so that it can connected to another WDS Station or WDS Repeater.

SSID: Name of a wireless.

Shown in Figure 20, the user can click the Select button to list all the SSIDs that

can be associated, and then choose the one need to be associated.

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Frequency MHz：This only appears when the device is configured to Access Point

mode or WDS Access Point mode. The device can only work on one channel at the

same time.

Frequency Scan List：This only appears when the device is configured to Station

mode or WDS Station mode. If it’s not enabled, the station will scan all the

channels which both the device and the country code allowed and then choose

the same channel as the associated AP. If it’s enabled, click select, another window

will pop up and let the user to choose the working channels, and the channels

should include the associated AP’s channel, which can fasten the association

process between the AP and the Station

Output Power：Output power of the device.

Country Code：Different countries allows different channels, use can choose the

country code to only allow the device works at the channels permitted in the

particular country.

Channel Width：Channel width selection, and DH-PFM880 device supports

5MHz/10MHz/20MHz/40MHz bandwidth.

Max TX Rate：Max transmission rate, and it can be used to limit the max

transmission rate of a device.

Lock AP MAC：In Station, WDS Station, and WDS Repeater modes, users can use

this to limit the APs associated to.

Security：User can set the security based on needs to guarantee the wireless

security.

WPA：Encryption method supported by 802.11 Protocols.

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7 Network

7.1 Router mode

DH-PFM880 acts as a router when configured to Router mode. In router mode, the

connection is shown in Figure 21. User needs to connect the PoE port of PoE

adaptor to the PoE port of the DH-PFM880.

After the above connection, the DH-PFM880 can work as a router. The LAN port of

PoE adaptor acts as the WAN port of the router.

Figure 21 Connection figure of router mode

The Network page is shown in Figure 22.

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Figure 22 Network-Router mode

WAN Mode：WAN mode can be configured to DHCP, Static IP or PPPoE. When set

to DHCP, the device can dynamically get the IP address. When set to Static IP, user

needs to manually set the IP address, Netmask, Gateway IP and other information.

WAN IP：WAN IP address. It should be set to the same segment of IP address of

the internet provided by ISP, please check with the ISP for this information.

WAN Netmask：WAN Netmask, use can check with the ISP for this information.

Note: WAN IP address should not be the same as the IP devices of the internet to

avoid collision.

LAN IP：LAN IP address.

LAN Netmask：LAN Netmask information.

Primary DNS and Secondary DNS: Please check with the ISP for the information.

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7.2 Bridge mode

In Bridge mode, there is no WAN port. The LAN port of the PoE adaptor, and the

LAN2 port of the DH-PFM880 device can all be the LAN port, and the user can

choose one of them to use as LAN port. Please refer to Figure 6 for the

connections in Bridge mode, and the IP address/Netmask information setting is

the same as Router mode.

7.3 Management

The IP address of the device can be modified, and the management of the device

can be performed by setting the specified management interface.

7.4 Firewall

When the firewall is enabled, the device can allow only some devices to be

associated to. Shown in Figure 23, and there are 4 cases of Firewall filtering.

Figure 23 Firewall

1. Accept one or several devices with particular MAC address.

2. Deny one or several devices with particular MAC address.

3. Accept one or several devices with particular IP address.

4. Deny one or several devices with particular IP address.

7.5 IP Aliases

Add multiple IP to a network interface.

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7.6 Static Routes

This feature can be set to static routing.

7.7 Traffic Shaping

Traffic shaping is used to control the traffic of ingress/egress based on each

network port. As shown in figure 24, the ingress of wlan0 is limited to 1024Kbps,

and the egress is limited to 2048Kbps. That means the receiving rate of the

wireless link is limited within 1Mbps, the sending rate is limited to less than 2Mbps.

But usually, the input limited effect is not obviously, that’s because we could not

control how quickly the traffic arrives. However, when a port sends out egress

traffic, it can control how quickly the traffic exits.

Burst defines the how many bytes allowed for downloading/uploading during a

quick time. That leads to momentary throughput can greater than the limit value.

Figure 24 Traffic Shaping

z Ingress traffic entering wlan0, control the input rate

z Egress traffic exiting wlan0, control the output rate

The relationship of rate and burst for ingress:

z Set burst to 0, the rate of ingress is unlimited

z Set burst to about 1/10 of rate limit, the rate curve is stable

z Set burst larger than rate limit, the rate curve will hold a high value for a while then

down to stable

Below is the table that reflects the relationship between ingress rate limit and burst.

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Ingress Throughput when reach stable

Rate Limit(kbps) Burst(kBytes) （Mbps） Description

10000 0 29.587 Unlimited

10000 10 4.286 Stable

10000 100 8.037 Oblique up to stable

10000 1000 8.825 From 9.5 down to stable

10000 10000 8.6 From 28.5 down to stable

10000 40000 8.6 Hold on 10 seconds at 29.6, then

suddenly down to stable

The relationship of rate and burst for egress:

z Set burst less than 1/10 of rate limit, the rate curve is stable totally

z Set burst larger than rate limit, the rate curve will hold a while at a higher value then

down to stable

Below is the table that reflects the relationship between egress rate limit and burst.

Egress Throughput when reach stable

Rate Limit(kbps) Burst(kBytes) （Mbps） Description

20000 0 18.853 Stable

20000 20 19.021 Stable

20000 200 19.205 Stable

20000 2000 19.437 From 23.5 down to stable

20000 20000 19.2 Hold on 20 seconds at 24.5, then

suddenly down to stable

20000 80000 19.2 Hold on several minutes at 24.5,

then suddenly down to stable

7.8 VLAN Settings

The VLAN function allows user to create multiple virtual local area network. As

shown in figure 25, we add a VLAN on port wlan0. The VLAN ID is 10. The range of

VLAN ID is 2~4094. Each VLAN ID represents a different VLAN.

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Figure 25 VLAN Setting(1)

Bridge function is needed to use together with VLAN. As show below, we add

VLAN 10 on port eth0 and wlan0, they are eth0.10 and wlan0.10, and put them

into the same bridge. The packets from eth0.10 or wlan0.10 will be added a VLAN

label which ID is 10. That requires: the opposite wireless connection side must

support VLAN 10, the device which connects with eth0 is also need to support

VLAN 10.

Figure 26 VLAN Setting (2)

Below is a common usage:

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Figure 27 Common Usage

8 Advanced

The Advanced page is shown in Figure 28.

Figure 28 Advanced

Auto ACK-Timeout Adjust：It is suggested to enable this function, so that the

distance between 2 DH-PFM880 devices can be detected and all the related

parameters can be optimized to achieve the best link quality.

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Distance: The distance can be set manually if the Auto ACK-Timeout Adjust is

disabled, otherwise, the distance parameter is not allowed to be set. It is

suggested the distance is set automatically by enabling Auto ACK-Timeout Adjust

parameter.

Aggregation: It enables several data frames of 802.11 to be aggregated and

transmitted out, thus improve the throughput. In default, it’s enabled.

Multicast Data: When it’s enabled, DH-PFM880 devices allow multicast

function.

LED configure：This is to configure the signal strength value needed to light on.

There are 3 LEDs on DH-PFM880 devices (LED3 value > LED2 value > LED1 value).

The default values are -86dBm, -71dBm and -56dBm. When LED1 value < signal

strength < LED2 value, LED1 is lighted on; When LED2 value < signal strength <

LED3 value, both the LED1 and LED2 are lighted on; When signal strength > LED3

value, all three LEDs are lighted on.

9 System

System page is shown in Figure 29 and it is divided into the following 4 parts:

Configuration Management, Firmware, Device Setting, Accounts.

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Figure 29 System

Backup configuration ：When clicking Download button, the current

configuration can be backed up to a file.

Upload configuration：When clicking browse, user can choose the backup

configuration file and then click upload, so that the configuration stored in the

backup file can be applied.

Firmware update：Click browse button and choose the file, and then click update

button, the firmware can be updated to the latest version.

Firmware reboot：Click the Reboot button to reboot the device.

Reset to Defaults：Click the Reset button to restore to the factory default settings.

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For default, all the factory settings are shown in the following table.

Table 6 Main parameters at the factory settings

Items Default Settings

IP address 192.168.1.36

User name admin

Password admin

Wireless mode AP

SSID DaHua

Output power 27dBm

Encryption WPA->WPA2->CCMP- ：>Password 1234567890abc

Network mode Bridge Mode

Device name：It can be set to any name needed.

Interface Language：Language setting。

Accounts：The user can modify the user name and password here.

10 Tools

The Tools page is shown in Figure 30. This page is divided into six parts: Ping IP,

Time to Restart, Ping Watchdog, Telnet/Syslog, NTP/SNMP and IPERF.

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Figure 30 Tools

Ping IP： User can input the destination IP address of another device, and click

Ping button. If that destination device is successfully connected to the

DH-PFM880 device, the result shows Alive, otherwise shows Not Alive.

Ping Watchdog：The ping watchdog sets the DH-PFM880 Device to continuously

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ping a user-defined IP address (for example, it can be the IP address of the AP the

Client is connecting to). If it is unable to ping under the user defined constraints,

the DH-PFM880 device will automatically reboot. It is highly recommended that

users enable this feature at the side of “Wireless Station” and disable this feature

at the side of “Access Point”.

Ping IP Address：Specify an IP address of the target which will be monitored by

Ping Watchdog. If this feature is enabled at the side of “Wireless Station”, Ping IP

Address should be the IP address of the AP the Client is connecting to.

Ping Interval：Specify time interval (in seconds) between the ping requests are sent

by the Ping Watchdog

Start up Delay: specify initial time delay (in seconds) until first ping request is sent

by the Ping Watchdog

Ping Failure：Specify the number of ping replies. If the specified number of ping

replies is not received continuously, the Ping Watchdog will reset the WIFI only.

Telnet：When telnet is enabled, the user can input command “Telnet 192.168.1.36”

in the DOS window of Windows XP or Windows 7 PC, and then telnet to the

DH-PFM880 and manipulate the DH-PFM880 device. When telnet is disabled, this

operation is disabled.

Syslog: When it’s enabled, and the System Log server’s IP is also set here, the log

information will be output to the System Log server automatically.

NTP Server：If this NTP server is set, and the DH-PFM880 device can access to this

NTP server. DH-PFM880 device automatically calibrate the time and date

information with the NTP server and show the time information in the Status page.

SNMP Group：When this function is enabled, use can check the working condition

and information of the DH-PFM880 device.

IPERF: it is used to test network throughput. User can configure it to server or

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client

Server: when it is a server, it waits client to connect.

Client: when it is a client, it sends connect request to server.

IPERF dual: client sends and receive signal at same time.

IPERF Server: Server IP address.

IPERF Thread: the number of iperf thread. If using more thread, the throughput is

high.

IPERF Time: how long the iperf run.

IPERF Interval: the time between two results show.

Note：If users want to modify the parameters of Ping Watchdog, please

disable it first and then apply. When the web page shows that Ping

Watchdog is really disabled, users can now re-enable it with modified

parameters.

11 AC NMS

The AC NMS page is shown in Figure 31.If you want the device to join the AC

management you need AC management at first and then go to the AC NMS page

to enable the AC control.

WTP name: indicates the name of the device to show on the AC management.

WTP location: indicates the location information of the device to show on the AC

management.

AC IP: AC IP is the IP address of the AC management witch this device should be

joining in. It can be added up to eight.

When the AC control is enabled and the IP address is matched, the device can

be on-line in AC management, a client device must be associated to an access

point device which is on-line on the AC, and then it can be on-line on the AC

management.

When AC control is enabled, users can not configure the device through the

device pages except the AC NMS.

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Figure 30 AC NMS

12 Logout

Click the logout button, it will logout the device and return to the login page.

13 Network Configuration Examples

13.1 AP and Station Network

In the point-to-point working scenario, user can configure one DH-PFM880 device

to AP, and another to station mode, shown in Figure 32.

Figure 31 AP and Station network

To make the above network working, user need to configure the two devices to be

associated. The detail configurations are described in the following:

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1. Configure the two devices to bridge mode, disable the firewall, and set

different LAN IP for the two devices, the LAN IP should be on the same

segment.

2. In wireless menu, configure one device to AP mode and the other one to

station mode, set the same SSID, the same channel bandwidth (20MHz for

default), and set the same encryption and password for both of the devices.

3. After the above setting is done, wait for a while. Using one computer to ping

the other one. If the devices are configured correct, they will be associated and

the ping will get the reply.

13.2 WDS AP, WDS Station, WDS Repeater Network

Figure 32 WDS Network

If there is a block, such as a building is in between the point-to-point connection,

one TuroBridge5F device can be put between the PTP connection as a relay, which

is “WDS AP, WDS Station, WDS Repeater” network, shown in the above Figure33.

Three DH-PFM880 devices need to be configured as shown in Figure 33:

1. Configure the 3 devices to be bridge mode.

2. In the wireless menu, make the following configurations:

y Configure the 3 devices to WDS AP/WDS Repeater/WDS Station

separately

y Configure the 3 devices’ SSID to be the same

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y Configure WDS AP and WDS Repeater frequency to be the same, for

example: 5825MHz

y Configure the encryption method and password to be the same.

3. To verify if the network is correctly setup, please use the computer connected to

one of the three devices to ping the IP of any of the other two devices. If the ping

is successfully, the network connection works correctly.

13.3 Router Mode

In the Router mode, the DH-PFM880 works as a router and the network

connection is shown in Figure 32. The PoE port of the PoE adaptor is connected to

the DH-PFM880 device’s PoE port, and the LAN port of the PoE adaptor is

connected to the internet. Meanwhile, the LAN port of DH-PFM880 device is

connected to one computer, and then user can configure the device.

Figure 33 Route mode

After the above connection is done, configure the DH-PFM880 device using the

web based configuration menu.

1. In wireless page, set the device to route mode, disable the firewall. If the

internet provided by the ISP (DH-PFM880 connected to) has a DHCP server,

user can set DH-PFM880’s WAN mode to DHCP (Dynamic IP) so that it can

obtain the IP address automatically.

If the internet provided by the ISP(DH-PFM880 connected to) doesn’t have a

DHCP server, user need to manually configure all the parameters given by the

ISP, such as the WAN IP, WAN Netmask, LAN IP, LAN Netmask, Default

gateway, Primary DNS, Secondary DNS.

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Note: LAN IP address and WAN IP address can not be in the same IP segment.

For example, if LAN IP is 192.168.1.*, then WAN IP must be set to 192.168.2.* or

192.168.3.*.

2. In wireless page, set wireless mode to Access Point, set SSID to a random name,

and set output power to a value needed(Max output power is recommended

in the outdoor long distance environment). Then the user needs to choose a

wireless channel and an encryption method.

3. Enable DHCPD at the Tools page. Please refer to chapter 10 for DHCPD setting.

4. When the above settings are done, use a computer to connect to DH-PFM880

device, and then check whether the connection is successfully.

Note: Users can check whether the connection is successfully by ping

DH-PFM880 device’s WAN IP address. If the ping is successfully, this

connection is successfully.

Appendix-A Troubleshooting

1. The device cannot be started after power on.

1. The Ethernet cable between the DH-PFM880 device and the PoE adaptor is

more than 40 meters long.

2. The Ethernet cable quality is not good enough, and it should be Cat 5e or even

Cat 6 cable.

3. The RJ-45 plugs are not well connected.

2. Can not be restored to the factory setting

Please manually push the Reset button for 5S~10S, then the user can log in the

device by typing the default IP address 192.168.1.36.

3. My computer cannot be connected to the DH-PFM880

Access Point.

Please try the following method to solve the problem:

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1. Adjust the direction of the DH-PFM880 device.

Please rotate the DH-PFM880 device since the antenna inside the device is

directional.

2. Switch to other wireless channel

Switch to other wireless channel ‘cause there are much interferences in this

channel.

3. Turn off the other interference sources

Maybe there are other WIFI devices nearby and cause interferences. Try to turn

off other WIFI devices nearby, or move DH-PFM880 to another clean

environment.

4. The signal strength between 2 DH-PFM880 devices is too

weak, and throughput is low.

1. The DH-PFM880 AP and Station devices are not Line-of-Sight, or there are

blocks like a building in between the AP and Station devices.

2. The Station device and AP device is not aligned very well, including both

horizontally and vertically, since the antenna of the DH-PFM880 is directional.

3. The Station device is installed in the windows, and the windows glass shields

the wireless signal.

4. The distance between the AP and Station devices is too far.

5. The signal strength is high, but the throughput is low

1. There are two much interferences, or multi-path interferences. For example,

there are two much 2.4GHz or 5.8GHz WIFI device working nearby.

2. The RJ45 ports of the DH-PFM880 device don’t work well.

6. During the point-to-point or point-to-multi-point

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connection, when ping from one device to another, the

latency is too long or the packet is lost.

1. Isolate the several APs if they are connected to one PoE switch.

2. The RJ45 ports are not connected very well.

7. The internet access is lost and the internet speed is low.

1. There are too much stations connected to one AP.

2. AP signal is too week.

3. There are interference source nearby.

4. Check the number of users and the max internet speed provided by the ISP.

This device complies with Part 15 of the FCC Rules. Operation is subject to the

following two conditions:

(1) This device may not cause harmful interference, and

(2) This device must accept any interference received, including interference that

may cause undesired operation.

Please take attention that changes or modification not expressly approved by the

party responsible for compliance could void the user’s authority to operate the

equipment.

Note: This product has been tested and found to comply with the limits for a Class

B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful interference in a residential

installation. This product generates, uses, and can radiate radio frequency energy

and, if not installed and used in accordance with the instructions, may cause

harmful interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation. If this product does cause

harmful interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct the

interference by one or more of the following measures:

—Reorient or relocate the receiving antenna.

—Increase the separation between the equipment and receiver.

—Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

—Consult the dealer or an experienced radio/TV technician for help.

This equipment should be installed and operated with a minimum distance 20cm

between the radiator and your body

Zhejiang Dahua Vision Technology DH-PFM880 5G Wireless Video Transmission Device CPE User Manual

Zhejiang Dahua Vision Technology Co., Ltd 5G Wireless Video Transmission Device CPE Users Manual

Users Manual

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