Dahua DH-PFM88 Series User Manual
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Dahua DH-PFM88 Series User Manual

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DH-PFM Wireless Equipment
User's Manual
V1.0.0
ZHEJIANG DAHUA VISION TECHNOLOGY CO.,LTD.

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Summary of Contents for Dahua DH-PFM88 Series

  • Page 1 DH-PFM Wireless Equipment User’s Manual V1.0.0 ZHEJIANG DAHUA VISION TECHNOLOGY CO.,LTD.

  • Page 2: Legal Statement

    ZHEJIANG DAHUA VISION TECHNOLOGY CO.,LTD. (hereinafter “Dahua”). Dahua or a third party may reserve the right of the product described in this user’s manual. Without the prior written approval of the corresponding party, any person cannot copy, distribute, amend, abstract, reverse compile, disassemble, decode, reverse engineering, rent, transfer or sub-license the software.

  • Page 3: Cybersecurity Statement And Recommendations

    We will provide product maintenance services.  To the extent not prohibited by applicable laws, Dahua and its employees, licensees, and affiliates are not liable for personal injury, or any incidental, special, indirect, or consequential damages whatsoever, including, without limitation, damages for loss of...
  • Page 4 2. Change Default HTTP and TCP Ports: ● Change default HTTP and TCP ports for Dahua systems. These are the two ports used to communicate and to view video feeds remotely. ● These ports can be changed to any set of numbers between 1025-65535. Avoiding the default ports reduces the risk of outsiders being able to guess which ports you are using.
  • Page 5 The network your NVR and IP camera resides on should not be the same network as your public computer network. This will prevent any visitors or unwanted guests from getting access to the same network the security system needs in order to function properly. For latest information about Dahua cybersecurity statement and recommendations, please visit www.dahuasecurity.com.

  • Page 6: Preface

    Preface Overview This document elaborates installation, configuration and use of DH-PFM wireless equipment. Symbol Definition The following symbols may appear in the document. Please refer to the table below for the respective definition. Symbol Note It means highly potential danger. It will cause severe injury or casualties if it fails to avoid.

  • Page 7: Important Safeguards And Warnings

    Important Safeguards and Warnings Before use, please read the following requirements carefully and conform to them strictly, in order to prevent danger and property loss. Please transport, use and store this product under allowed temperature and humidity.  Please don’t expose the product to direct sunlight or close to a heating source. ...

  • Page 8: Table Of Contents

    Table of Contents Legal Statement ............................I Cybersecurity Statement and Recommendations ................II Preface ............................... V Important Safeguards and Warnings ....................VI Description ............................. VIII 1 Product Overview ..........................1 1.1 Product Overview .......................... 1 1.2 Overview of TDMA Technology ..................... 3 1.3 Technical Features ........................

  • Page 9: Description

    Description Table 1 Release Note Version Release Date Revised Chapter Author 2014-05-12 Create Aim of Manual This manual mainly enables users to get familiar with DH-PFM88X, helps users to use it and solve some common problems when necessary. This manual mainly involves DH-PFM88X hardware information, WEB page parameters, configuration mode, networking mode and fault analysis, so as to effectively help users to know and use the equipment quickly, and shorten the time for users to know DH-PFM series products.

  • Page 10: Product Overview

    Product Overview DH-PFM88X series equipment owns unique built-in TDMA wireless technology. This technology combines advanced core technologies in the industry, and boasts features such as long transmission distance, high throughput and strong anti-interference performance. TDMA technology includes TDMA, flexible configuration of 5M/10M/20M/40MHz bandwidth, rate control and ACK overtime automatic adjustment technologies.
  • Page 11 DH-PFM88X owns TDMA operating system and integrates with TDMA technology, which effectively solves hidden node problem that perplexes large point-to-multipoint WLAN. With advanced rate control algorithm, adapt to channel quality changes quickly while keeping stable rate as far as possible, so it is very suitable for remote wireless transmission.

  • Page 12: Overview Of Tdma Technology

    DH-PFM88X is able to work in complicated and changing environment: working temperature ranges from -30℃ to 70℃, while working humidity ranges from 5% to 95%. DH-PFM88X keeps relatively high throughput rate in all kinds of harsh environment for a long time, such as thunderstorm, high temperature and high humidity, low temperature and low humidity.

  • Page 13: Technical Features

    Technical Features Integrate TDMA and effectively enhance “point-to-multipoint” overall performance. Support client priority setting and better deploy every client in case of point-to-multipoint. Support Ping Watchdog and real-time monitoring of wireless link; reboot the equipment automatically when wireless link disconnects, and thus ensure its stability. Support outdoor high temperature and low temperature: -30-70°...

  • Page 14: Equipment Kit

    reliable. 18) Support IP login, carry out remote control and management via webpage, and thus facilitate configuration. 19) Waterproof ultraviolet-proof shell ensures that the equipment works stably outdoors. Equipment Kit DH-PFM880 DH-PFM881 Host*1 Host*1 Antenna*1 Feeder*2 Cable tie *2 POE power supplier (24V/0.5A)*1 POE power supplier (24V/0.5A)*1 Instruction book Instruction book...

  • Page 15: Hardware Profile

    Hardware Profile Hardware Index CPU/Baseband Radio Atheros AR9344 Memory 64MB DRAM, 8MB Flash Physical Interface 2×10/100M Base-TX (Cat. 5/5E, RJ-45) network interface Power, LAN, WLAN, 3×Link Quality LED Indicator Light Power Supply POE, Power Adapter 24V/0.5A Table 1-2 Hardware Information Description of LED Mechanism DH-PFM88X adopts LED to display present working status and connecting quality, so users know its present working condition visually without logging onto the webpage.

  • Page 16: Product Installation

    Product Installation Equipment Installation Figure 2-1 DH-PFM88X Overall Installation Diagram DH-PFM88X line connection type differs under different network modes. Since its default setting is network bridge mode, this chapter mainly describes line connection type of network bridge mode. For connection type of route mode, please refer to Chapter 7 Route Mode of Network Setting.
  • Page 17 Figure 2-2 DH-PFM880 Installation Diagram Figure 2-3 DH-PFM881 Installation Diagram...

  • Page 18: Description Of Equipment Line Connection

    Description of Equipment Line Connection Figure 2-4 DH-PFM88X Interface Connection Diagram Type Interface Interface Name Connection and Function DH-PFM881 RJ45 Connect “POE” on POE power supply interfaces with twisted pair cable; provide DH-PFM881 equipment with power supply and data transmission. LAN2 As “LAN”...
  • Page 19 Figure 2-5 Restore Factory Defaults Item Factory Defaults IP Address 192.168.1.36 User Name admin Password admin Client Wireless Mode Encryption Type WPA->WPA2->CCMP->secret key: 1234567890abc Network Mode Network bridge mode Table 2-2 Factory Defaults of Main Parameters At network management page of the equipment (System Settings), click “Restore” and restore factory defaults.

  • Page 20: Common Networking

    Common Networking Wireless Point-to-point During point-to-point communications, one DH-PFM881 is usually set to be an access point, while the other DH-PFM881 equipment is the client. Actual connection diagram is as follows. Figure 3-1 Networking Diagram of Access Point and Client At Network Settings Page->Network Mode, both DH-PFM88X equipment shall be set to network bridge mode;...

  • Page 21: Wireless Point-To-Multipoint

    Wireless Point-to-multipoint During point-to-multipoint communications, DH-PFM880 is usually set to be an access point (single AP covers 90 degrees and 4 AP cover 360 degrees), while other DH-PFM881 equipment shall be client. Actual connection diagram is as follows. Figure 3-2 Point-to-multipoint Networking Diagram At Network Settings Page->Network Mode, all DH-PFM88X equipment shall be set to network bridge mode;...

  • Page 22: Adjustment Of Wireless Coverage Dead Angle

    Meanwhile, connection quantity is N (representing the quantity of connected clients) on AP status display page. Adjustment of Wireless Coverage Dead Angle When client adopts direct wireless communications with central AP (access point) because surveillance point is blocked seriously, two sets of CPE realize back-to-back connection and carry out angle adjustment.

  • Page 23: Status Display

    Status Display As the first page after the user logs on, status display page shows present configuration of the equipment and real-time monitoring of present working status. It is the 2 item of menu bar. Figure 4-1 Status Display Item Function Item Function...
  • Page 24 client and WDS repeater, it shows Quality Level overall signal level of client, as well as uplink and downlink signal level of client. TX/RX Rate As a parameter for client, WDS Time It displays time. When NTP client client and WDS repeater, it shows function is enabled, NTP server is set momentary rate...
  • Page 25 Figure 4-4 Bridge Table ARP table: corresponding relation of IP address and MAC address used by LAN port, whose communication has gone through DH-PFM88X in the past certain period, obtained by the equipment. Figure 4-5 ARP Table AP/Client Information Table When the equipment connects a client in AP mode, it shows client information.

  • Page 26: Setting Wizard

    Setting Wizard Precondition Connect the equipment with configuration host and turn on power by reference to Figure 2-4 DH-PFM88X Interface Connection Diagram. Operating Steps Step 1 Configure static IP address of “192.168.1.x” segment of host IP address (for example, 192.168.1.180). Figure 5-1 Host IP Step 2 In the browser, input default IP address of DH-PFM88X: 192.168.1.36.
  • Page 27 Figure 5-2 Login Page Step 3 Input username and password (whose default values are admin), and click “Confirm”. The system shows status display page, including basic information, such as working status, present settings and software version of DH-PFM88X equipment. Figure 5-3 Status Display Step 4 Click “Wizard”...
  • Page 28 Figure 5-4 Wizard Step 5 Click “Next” to show basic network parameters. Default configuration is “Network Bridge Mode”; IP address of LAN port is “192.168.1.36”. It is suggested that the user should modify its IP address immediately after logging onto the equipment. Equipment IP is unique in the same LAN.
  • Page 29 Step 6 Click “Next” to show basic wireless parameters and wireless encryption options. The most common two wireless modes of DH-PFM88X equipment are “client” and “access point”. In the same LAN, local end and client wireless equipment have the same needs for wireless encryption option, network name option and password option. In “client”...
  • Page 30 Figure 5-7 Working Scenario Step 8 Click “Next” to show custom scenarios. When wireless mode is access point, the user only needs to change channel width  to be 40+MHz or 40-MHz, set output power at 27dBm and tick “ACK-Timeout Adjustment”.
  • Page 31 Parameter Parameter Description Name The user configures output power of the equipment according to actual working conditions and local laws. The larger the output power is, the farther Output Power the wireless transmission distance will be (maximum output power available to the system is 27dBm).

  • Page 32: Wireless Settings

    Wireless Settings Page of wireless settings is shown as follows: Figure 6-1 Wireless Settings There are 5 wireless modes, including AP mode, CPE/client mode, WDS client mode, WDS AP mode and WDS repeater. Access Point (AP) mode: a wireless access node can be connected with client equipment, such as computer, mobile phone and wireless bridge etc..
  • Page 33 WDS AP: it can only be connected with WDS repeater or WDS client. One WDS AP can connect with multiple WDS clients or WDS repeaters. SSID: this value is used to control access to wireless network. When other equipment connects with this equipment, only those with the same SSID can communicate with each other and build LAN.
  • Page 34 keeps their data under protection and ensures that only authorized network users can visit the network. WPA makes up all defects of wired equivalent privacy (WEP). In client mode, DH-PFM88X searches for surrounding 5.8G wireless band, provides basis for setting, avoids interference source effectively and searches for those equipment with access port mode.

  • Page 35: Network Settings

    Network Settings Route mode In route mode, DH-PFM88X with WAN port and LAN port is equivalent to a router. LAN2 port of DH-PFM88X is equivalent to LAN port of router, whereas LAN port of POE power supplier is equivalent to WAN port of router. In route mode, connection diagram is shown as follows: Figure 7-1 Connection Diagram of Route Mode Figure 7-2 Route Mode...
  • Page 36 WAN Mode: WAN mode is to set WAN port to be static IP address and dynamic acquisition (DHCP). When it is static IP, the user shall manually set IP and subnet mask; when it is DHCP, the equipment can acquire IP address from DHCP server automatically. WAN IP: IP address of WAN port, which can be IP address of the same segment of network to be connected.
  • Page 37 Figure 7-3 Firewall Filter one equipment whose IP address is xxx.xxx.xxx.xxx Firewall is enabled, IP filtering mode is set to be “Refuse”, and any one item in IP1～IP10 is set to be IP that shall be filtered. Filter one equipment Firewall is enabled, MAC filtering mode is set to be “Refuse”, and any one item in Mac1～Mac10 is set to be MAC address of the equipment to be filtered.

  • Page 38: Advanced Settings

    Advanced Settings Page of advanced settings: Figure 8-1 Advanced Settings Auto ACK-Timeout Adjustment: it is suggested that “Auto ACK-Timeout Adjustment” should be enabled. This option can test the distance between two devices automatically, and set parameters according to this distance, in order to optimize wireless connection quality. Distance: if “Auto ACK-Timeout Adjustment”...
  • Page 39 it is enabled by default. RTS Threshold: when packet length is over or equivalent to the set value, RTS/CTS mechanism will be started. To send data, the station will send a RTS to AP, and notify AP that it will send data. After receiving the request, AP notifies all other stations in its coverage through CTS, and requires them delaying sending.

  • Page 40: System Settings

    System Settings System settings interface consists of configuration management, firmware configuration, device settings and account information. Figure 9-1 System Settings Figure 9-2 Accounts Information Backup Configuration: click “Download” to backup present webpage configurations. Note that configuration file contents cannot be modified manually. Upload Configuration: click “Browse”...
  • Page 41 Device configuration will be restored to the device configuration when backup of configuration file is carried out. Firmware Update: click “Browse” to select the version to be updated; click “Update” and the device starts to update. Firmware Reboot: click “Reboot” and the device starts to reboot. Restore Factory Settings: click “Reset”...

  • Page 42: Tool Application

    Tool Application Tool application page consists of testing tool and Telnet: Figure 10-1 Tools ping IP: when the user sets IP address of a device in ping IP bar and clicks “Ping”, if this device is connected with DH-PFM88X, ping result will be “Alive”; otherwise, it will be “Not Alive”. Ping Watchdog: it is used to monitor the operation of Wireless Bridge continuously.
  • Page 43 Ping Interval: time interval between two pings. Ping Failure: when continuous Ping failure reaches the set value, the device will reboot WIFI. Startup Delay: it will start to ping the target host, after Wireless Bridge system is started and delayed for the set time period.

  • Page 44: Appendix 1 Industry Application

    Appendix 1 Industry Application Appendix 1.1 Wireless Surveillance of Safe Site System Diagram (Standard Proposal) Appendix Figure 1-1 The recommended standard wireless surveillance proposal of construction site adopts point-to-point transmission. Receiving end adopts DH-PFM880 device, which provides necessary technical support for future expansion.
  • Page 45 System Diagram (Economical Proposal) Appendix Figure 1-2 With point-to-point transmission, receiving end adopts DH-PFM881 device. Type Model No. Description Feature ntity Wireless DH-PFM881 Outdoor waterproof, wide temperature: applies receiving -30~70° , wireless bandwidth: 300M, outdoor high coverage area: 3km, standard power temperature supply temperature...
  • Page 46 System Diagram (Full Wireless Coverage Proposal) Appendix Figure 1-3 This proposal is highly comprehensive. Generally speaking, required device quantity shall be confirmed according to actual needs. Type Model No. Qty. Description Feature Wireless DH-PFM880 IP66, wide temperature: -30~70° , It applies to large receiving wireless bandwidth:...

  • Page 47: Appendix 1.2 Wireless Surveillance Of Safe Town

    Appendix 1.2 Wireless Surveillance of Safe Town System Diagram (Full Wireless Coverage Proposal) Appendix Figure 1-4 Rural scene is relatively fixed, so it is easiest to design wireless proposals. The proposal for every village is almost the same: it centers on village committee, and video data is wirelessly converged and saved in NVR device in machine room.
  • Page 48 Switch DH-S4200- Gigabit management switch, applies machine 24*10/100/1000Base-T, 4*SFP non-standard rural room (Combo) light, natural heat machine room. (optional) dissipation without fan, dustproof design Appendix Table 1-4 Recommended Model Selection List of Wireless Rural Surveillance...

  • Page 49: Appendix 2 Troubleshooting

    Appendix 2 Troubleshooting 1. The device fails to start normally: (1) Network line from the device to POE module exceeds 40 meters. (2) Network line has poor quality and materials. (3) Crystal plug of network line isn’t connected firmly or line sequence is wrong (crystal plug shall be remade).
  • Page 50 (4) Distance between AP and client is too long. 5. Why is signal quality high while throughput capacity is low? Analyze reasons: (1) Too much interference or multipath interference. (2) Ethernet port of the device breaks down. 6. Frequent packet loss. Serious packet loss occurs when many devices are installed in the same region.

  • Page 51: Appendix 3 Points For Attention

    Appendix 3 Points for Attention 1. Horizontal Direction and Angle of Pitch of Antenna Since base station and wireless bridge adopt directional antenna, AP antenna on the base station shall tilt down for certain angle. Meanwhile, AP shall align with client antenna. 2.
  • Page 52 Climatic Condition Communication distance is relatively far in case of dry air and relatively near in case of moist air (especially rainy and snowy weather). Transmitted Power The larger the transmitted power is, the farther communication distance will be. During outdoor long-distance communication, output power is usually set at the maximum value.

  • Page 53: Appendix 4 Test Report

    Appendix 4 Test Report Test Description This test report mainly tests ultimate wireless transmission performance of DH-PFM88X product under the condition of no occlusion and slight occlusion, including transmission distance and wireless throughput rate with certain transmission distance. Test (No Occlusion) This test was carried out at East China Sea Dike in Pudong New District of Shanghai;...
  • Page 54 land in the right. 2) The whole dike was basically a straight line. 3) Test pole was about 8 meters higher than the dike. Point-to-point test was carried out between point A and point B. Appendix Figure 4-2 Test Tool 1) Test tool: Chariot (professional network speed test software) 2) Test equipment: DH-PFM880 <->DH-PFM881;...
  • Page 55 27.1/26.4 (uplink and downlink) 5785 MHz 20MHz 55/56 -62/-63 32.9/33.1 (uplink and downlink) 5500 MHz 20MHz 55/56 -60/-60 31.2/31.3 (uplink and downlink) 5785 MHz 40MHz 55/56 -66/-64 38.7/38.3 (uplink and downlink) 5500 MHz 40MHz 55/56 -63/-64 5KM Test Result  Equipment (AP/STA) RSS (dBm) Throughput (Mbps) Channel Bandwidth...
  • Page 56 83.4 72.2 68.7 62.5 51.7 40.3 28.4 5500MHz 5785MHz Appendix Figure 4-4 Throughput and Distance Curve at Suburb and 40M bandwidth Test (Slight Occlusion) This test was carried out at Shenjiang Road in Pudong New District of Shanghai (as shown in the following figure).
  • Page 57 Appendix Figure 4-5 Test Tool 1) Test tool: Chariot (professional network speed test software) 2) Test equipment: DH-PFM880 <->DH-PFM881; one DH-PFM880 and one DH-PFM881 were placed at both points respectively. Test Result 2KM Test Result  Equipment (AP/STA) RSS (dBm) Throughput (Mbps) Channel Bandwidth 33.5/8.9(uplink and downlink)
  • Page 58 42.4 37.5 28.1 5500MHz 5785MHz Appendix Figure 4-6 Throughput and Distance Curve at Downtown Area and 20M bandwidth...

  • Page 59: Appendix 5 Technical Specification

    Appendix 5 Technical Specification Type Item DH-PFM880 DH-PFM881 Standard IEEE802.11a/n (2T2R 300Mbps) Modulation 802.11 a/n:OFDM Antenna External antenna: gain 16dbi Internal antenna: gain 15dbi ＋23dBm(@MCS0,11n) Equivalent output power +27dBm(@MCS0,11n) ＋15dBm(@300Mbps,11n) Wirele Receiving sensitivity -74dBm @ 65Mbps, -96dBm@1Mpbs Optimal transmission distance 0-3km techn Working frequency...
  • Page 60 ZHEJIANG DAHUA VISION TECHNOLOGY CO.,LTD. Address：No.1199, Bin'an Road, Binjiang District, Hangzhou, P.R. China Postcode: 310053 Tel: +86-571-87688883 Fax: +86-571-87688815 Email:overseas@dahuatech.com Website: www.dahuasecurity.com...

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