Section 936—Closed Circuit Television (cctv) 936. 1 General Description



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936.2.05 Cabling and Connectors

Provide cabling and connectors between the camera system assembly and the cabinet interface assembly as shown in the CCTV system detail drawings and in the Plans. Label all cables. All cables shall meet industry and manufacturer recommendations.

When required for the camera application, coaxial video signal cables will be provided with labels attached at both ends of each cable. Coaxial cables will use BNC connectors with gold-plated center pins on the video signal cables; use only connectors recommended by the cable manufacturer.

Provide control cable with labels attached at both ends of the cable. Terminate control cable in the equipment cabinet as shown in the CCTV system detail drawings in the plans and as recommended by the CCTV system manufacturer. Ground or bond any pair shielding and any unused conductors in accordance with the CCTV system manufacturer’s recommendations.

For IP Cameras, provide communications cabling (Outside Plant Category 5) as recommended by the CCTV system manufacturer. Label all cables. Separate power cables must be clearly labeled as such and meet manufacturer recommendations. When Power over Ethernet cameras are provided, cabling must be sized and rated in accordance with manufacturer recommendations and clearly labeled as such.

936.2.06 Video Encoder (All Types)

Provide a Video Encoder in accordance with the minimum requirements below for the encoding of analog video inputs and transmission as digital streams over a network.



A. Video Encoder, Type A

Not Used

B. Video Encoder, Type B

Video Encoder, Type B is a standalone, environmentally hardened encoder for a single video signal, suitable for field cabinet use.

1. General

a. All encoders provided by the Contractor shall be new and shall be from the same manufacturer and be fully compatible and interoperable with each type provided.

b. All encoder types provided by the Contractor shall be fully compatible and interoperable with the GDOT existing network equipment.

c. Mean Time Between Failures (MTBF): Encoders shall have a minimum MTBF of 20,000 hours.

d. Latency: The end-to-end system latency between the Encoder and Decoder appliances shall be no more than 300 msec, not including network delays. The encoders shall support various frame adjustments to minimize latency.

e. Remote Control: Encoders shall be remotely adjustable via a video management system or command set so that a technician can adjust image quality controls for contrast, brightness, hue and color levels.

f. Video equipment shall support the NTSC signal format.

g. Furnish rack-mountable or shelf-mountable units.

h. Rack-mountable units shall include integrated brackets for mounting in standard EIA 19-inch rack rack-mountings.

2. Physical and Environmental Requirements.

a. The Video Encoder shall have the following ports as a minimum:


  • Network: 10/100 Mbps RJ-45 or as directed by Engineer.

  • Video Connector: BNC

  • Serial Data Interface: One (1) minimum RJ-45 port/connector.

  • Serial port may utilize D-sub connectors or terminal block connections as approved by the Engineer.

b. In locations where there are more than one video source, and Encoders with multiple video ports are approved by Engineer, each video input port shall meet all the video and data requirements of Video Encoder Type B independently.

c. The video input performance measures shall comply with NTSC and EIA requirements, including the EIA-170 standard, with a nominal composite video of 1 volt peak-to-peak (Vp-p). The equipment shall have an electrical impedance of 75 ohms.

d. Operating temperature of -30 degrees F (-34 C) to 165 degrees F (74 C) with relative humidity between 10% to 90% non-condensing.

e. Ventilation fans are not permitted.

f. Encoders shall be installed in a field cabinet with protection from moisture and airborne contaminants, blowing rain, wind, blowing sand, blowing dust, humidity, roadside pollutants, vandalism, and theft.

g. Encoders shall be resistant to vibration and shock, and conform to Sections 2.1.9 and 2.1.10, respectively, of the NEMA TS 2 standard.

h. Encoders for field site locations shall be PCB conformal coated to provide a level of protection from humidity, contaminants, dust, pollution, etc.

i. Encoders shall provide LED status indicators for local status display analog of video input, serial data interface activity, network interface activity and power.

j. Cable connections (data/video/power) shall require no tools for installation or removal and be designed with positive locking devices such that they will not vibrate loose.

k. Provide external markings for all connectors and indicators. Replaceable components shall be permanently marked and traceable to the supplied documentation, including schematics and parts list.

l. The external markings shall include the product function name, model number, serial number, and manufacturer’s name.

m. All parts required for a completed video system shall be made of corrosion-resistant materials, such as stainless steel, anodized aluminum, brass, or gold-plated metal.

n. All individual Encoders shall be shelf, rack (19”)/module, or DIN rail mountable. Other mounting options may be submitted for review and approval by the Engineer.

o. Nominal power input voltage of 120 VAC, 60 Hz. ±3 Hz.


  1. Maximum power consumption of 20 watts.

  2. If the device requires operating voltages of less than 120 VAC, the appropriate voltage converter shall be supplied. All voltage conversion devices shall also be temperature hardened as specified herein for location (field or central).

  3. The equipment or it’s voltage converter shall operate within a voltage range of 90 VAC to 135 VAC.

  4. Encoders shall provide for automatic recovery from an over or under voltage condition when prime power has returned to the tolerance values specified herein. All configuration parameters shall be stored in non-volatile memory and no reprogramming or manual adjustments shall be required upon power recovery.

3. Video Data Requirements

a. The Encoder shall be capable of streaming a minimum of the following Video Compression Technology types:





  • Stream 1: H.264 (Video Coding Experts Group (VCEG)/Moving Picture Experts Group)

  • Stream 2: H.264 (Video Coding Experts Group (VCEG)/Moving Picture Experts Group)

  • Snapshot: JPG full-frame capture

b. The Encoder shall be capable of streaming multiple bandwidth and compression types simultaneously per video input channel.

c. The Encoder shall support streaming multicast and unicast streams simultaneously.

d. The Encoder shall have the ability to automatically initiate and stream a multicast stream upon starting without any remote request to join the multicast group.

e. The Encoder shall support multiple simultaneous Real Time Streaming Protocol (RTSP) requests.

f. The Encoder shall be able to supply multiple unique and independent video streams with frame rate, bit rate, and image size settings adjustable through an RTSP request.

g. The encoder shall support a minimum of 2 simultaneous unique and independent H.264 video streams with frame rate, bit rate, and image size settings adjustable per video input channel.

h. Encoders shall be a hardware-based network device able to accept a minimum of one analog National Television System Committee (NTSC) video input and encode for transport across IP networks.

i. Encoders shall be specifically designed for network operation, and adhere to ISO standards.

j. Support the following minimum encoded resolutions:




  • Stream 1: NTSC – Full D1

  • Stream 2: CIF/SIF

  • Snapshot: NTSC – Full D1

k. Dynamic bandwidth control: Provide up to the following or greater rates (The data rate shall be defined as the maximum committed bandwidth to be utilized, which includes data bursting.).

  • Stream 1: 3 Mbps at D1

  • Stream 2: 1 Mbps at CIF/SIF

l. Bandwidth increments shall be user configurable via the network, independently per stream and snapshot. The minimum bandwidth setting shall be 56Kbs or less.

m. Encoder streams shall be capable of being set to variable or constant bit rates.

n. The default bandwidth for the Encoders as furnished shall be set to 2Mbps when communicating over fiber and 56kbs when communicating otherwise.

o. Provide on-board buffered video memory for protection against potential network disruptions.

p. Encoders shall be capable of providing JPG snapshots and transfer image via FTP either by push or pull at a user-defined interval minimally between 60 and 300 seconds.

q. Encoded streams shall be fully compatible with the NaviGAtor software decoding system and with VLC (Video LAN Client.)

r. The encoder system, including processor, internal memory access and all data paths, shall operate with the following stream settings running simultaneously with no performance degradation of any stream, serial data interface, or device management interface:


  • Stream 1: 2Mbps/NTSC – Full D1/30 frames per second/RTP
  • Stream 2: 192Kbps/SIF/15 frames per second/RTP

  • Snapshot: NTSC – Full D1/120 second capture interval

4. Network Requirements

a. Encoders shall meet the following minimum network requirements:

b. Network connection shall be Ethernet Compliant IEEE 802.3, 802.3u, and 802.3x; 10/100 Mbps or higher, auto sensing full/half-duplex operations.

c. Encoders shall provide encapsulation of each of the video streams in UDP packet and TCP packets, depending on stream configuration, for network transmission.

d. Encoders shall connect to a network device (i.e., Ethernet switch/router, IP wireless device, etc.) via a RJ-45 connector through Category 5eor higher quality stranded patch cords.

e. All network RJ-45 ports shall be standard EIA/TIA-568-A pin-outs and shall be rated at 10/100Mbps or greater.

f. All Encoders provided by the Contractor shall be fully interoperable without customization or the addition of appliances within either the remote or primary communications network. All devices shall be fully interoperable with the backbone communications network.

g. Static management interface IP Addressing (class A, B, and C).

h. Static IP Addressing of the multicast group individually and independently for each stream.

i. RTP, UDP, Unicast and IP Multicast (Internet Group Multicast Protocol / IGMP V2) features for digital video transmission, individually and independently for each stream.

j. Encoders shall support Real Time Streaming Protocol (RTSP) over RTP, individually and independently for each stream.

k. Encoders shall support multiple stream requests, individually and independently for each stream.

5. Serial Data Interface Requirements

The Encoder shall meet the following minimum serial data interface requirements:

a. The Encoder shall provide bi-directional serial communications over Ethernet 10/100 Base-TX via the following methods:


  • Encoder serial port to Decoder serial port data stream.

  • IP socket to Encoder serial port by TCP protocol.

b. Each serial port shall provide full-duplex serial interface and data rates up to 115.2 Kbps (minimum).

c. Serial port shall be software configurable, locally or over the network, to EIA-232/422/485 mode of operation as defined by the EIA for data format, data rate, and data structure (e.g., baud rate, the number of bits, parity, stop bits, flow control, etc.) via the management software provided.

d. No serial adaptors or interface converters shall be permitted.

e. Encoders shall be capable to use the serial interface port to support PTZ camera control functions.

f. Encoder serial port shall provide IP addressing and socket number selection and provide the capability to establish an IP connection directly from an operator workstation or server to any Encoder IP address and socket number to transport serial data, independent of whether or not any video stream for that encoder is being viewed.

6. On Screen Display Requirements

The Encoder shall provide the following On-Screen Display (OSD):

a. Encoders shall support a static text insertion capability on all streams and shall be capable of inserting a minimum of two (2) user configurable text messages of at least 20 characters in length on separate lines, in user-configurable positions anywhere on the image.

b. Encoders shall support JPG image insertion on all streams in either the upper left or upper right positions in the image, using a JPG file(s) stored in the Encoder’s configuration.

c. JPG image insertion shall be scalable per stream according to the stream resolution, or there shall be the capability to insert a different JPG image file for each stream.

d. Encoders shall have the option to display or not display the OSD.

7. Management Requirements

a. Encoders shall be manageable through SNMP (v2), HTTP, FTP/TFTP, and/or Telnet/CLI.

b. Encoders shall have a NTP or SNTP client.

c. The management system shall be provided to remotely configure and diagnose the Encoder.

d. Have capability to reset/reboot and firmware upload via the methods listed above.

e. Have the capability to remotely change any of the device configuration settings including bit rates, image resolution and compression settings and serial interface type.

f. Provide pre-defined optimized video compression and streaming settings for various bit rates.

g. Provide update capability for the firmware in the Encoder from the central site. Ability to access the serial number, firmware number, IP address and equipment configuration.

h. Have the capability to upload firmware to multiple units automatically.

i. Provide ability for remote firmware upgrades.

j. Provide a command-line interface on the console port for local management.

k. Provide administrative access control via a configurable password.

l. Provide support for managing the administrative security parameters via both the Local Management and Remote Management interfaces required herein.

m. Provide support for managing the following video streaming parameters via the Remote Management functionality required herein.


  • Target address and port (per stream)

  • TTL parameter

  • Resolution (per stream)

  • Frame rate (per stream)

  • I/P ratio (per stream)

  • Encoding bit rate (per stream)

  • On-screen display

C. Video Encoder, Type C – Card

Video Encoder, Type C- Card is a high density encoder unit (card) for multiple video signals, with one encoder per video signal, suitable for control center use in a slot based chassis.

1. General

a. Each encoder of a Video Encoder Type C- Card shall meet all the Video Encoder, Type B requirements except the physical requirements as noted in section 936.2.06.B.

b. All Contractor provided Video Encoder Type C- Cards shall be compatible with, and of the same make as Video Encoder, Type C – Chassis provided by the Contractor.

c. All Contractor provided Video Encoder Type C- Cards shall be compatible with, and of the same make as standalone Video Encoder, Type B provided by the Contractor.

2. Physical

a. Each Video Encoder Type C- Card shall include a minimum of 4 encoders per card with a corresponding number of BNC ports per encoder.

b. Each Video Encoder Type C- Card shall include one RJ-45 Network port: 10/100 Mbps.

c. Video Encoder Type C- Card shall be fully contained and obtain power from the Video Encoder, Type C Chassis.


D. Video Encoder, Type C – Chassis

Video Encoder, Type C - Chassis is a high density rack mount unit that supports multiple Video Encoder Type C or Video Decoder Type C cards suitable for control center use.

1. General

All Contractor provided Video Encoder Type C- Chassis shall be compatible with, and of the same make as Video Encoder, Type C – Cards provided by the Contractor

2. Physical

Chassis shall support a minimum of 12 Video Encoder, Type C cards, or 12 Video Decoder, Type C cards, or a combination thereof up to the minimum total cards.

a. Chassis shall be 7U or less and be 19” rack mountable.

b. Each Chassis shall be capable of operating on 1 internal power supply.

c. Each Chassis shall be capable of supporting a minimum of 2 internal power supply.


E. Video Encoder, Type D

Video Encoder, Type D is a standalone, environmentally hardened encoder for a single video signal, suitable for field cabinet use that is compatible with the existing legacy encoder and decoder video systems and otherwise would not meet Type B requirements.

1. General

Encoders of this Type shall be of the same make and model of encoder(s) that it shall replace, share communication in a drop and add link with, or with the decoder that shall decode it’s video, unless otherwise approved by the Engineer.



F. Video Encoder, Type E – Cards

Video Encoder, Type E-Cards is a high density encoder unit for multiple video signals, with one encoder per video signal, suitable for control center use with the existing legacy encoder and decoder video systems and otherwise would not meet Type B requirements.

1. General

Encoder Cards of this Type shall be of the same make and model of the Encoder Card(s) that it shall replace, or with the Encoder Card(s) that resides in the same chassis that it shall be added to unless otherwise approved by the Engineer.



G. Video Encoder, Type E – Chassis

Video Encoder, Type E - Chassis is a high density rack mount unit that supports multiple Video Encoder Type C or Video Decoder Type C cards suitable for control center use with the existing legacy encoder and decoder video systems and otherwise would not meet Type B requirements.



936.2.07 Video Decoder (All Types)

A. Video Decoder, Type A

Not Used

B. Video Decoder, Type B

Video Decoder, Type B is a standalone decoder for the decoding of IP streams of the formats compatible of the Video Encoder Type B streams into a standard NTSC analog video stream output.

1. General

a. All Video Decoder Type B shall meet all the requirements of a Video Encoder Type B unless otherwise stated.

b. Be new and shall be from the same manufacturer and be fully compatible and interoperable with each type provided.

2. Physical and Environmental

Video Output Connector : BNC

a. The video output performance measures shall comply with NTSC and EIA requirements, including the EIA-170 standard, with a nominal composite video of 1 volt peak-to-peak (Vp-p). The equipment shall have an electrical impedance of 75 ohms.

3. Video Data Requirements

a. The Decoder shall be capable of decoding a minimum of the following Video Compression Technology types:


  • H.264 (Video Coding Experts Group (VCEG)/Moving Picture Experts Group)

  • MPEG -4 (Moving Picture Experts Group)

  • MJPEG Motion JPEG (Moving Picture Experts Group)

b. The Decoder shall support joining multicast groups and decode the streams of the Type and video Compression technology listed above.

c. The Decoder shall support decoding unicast streams from a of the Type and video Compression technology listed above.

d. The Decoder shall support decoding of streams from RTSP requests of the Type and video Compression technology listed above

e. The Decoder shall be able to decode unique and independent video streams with frame rate, bit rate, and image size settings adjustable through an RTSP request.

f. Decoders shall be a hardware-based network device able to provide a minimum of one analog National Television System Committee (NTSC) video output and decode IP video transported across IP networks.

g. Decoders shall be specifically designed for network operation, and adhere to ISO standards.

h. Support the following minimum encoded resolutions:


  • NTSC - Full D1

  • CIF/SIF

  • QCIF/QSIF

  • Decoder streams shall be capable of decoding streams set to variable or constant bit rates

4. Network Requirements. Decoders shall meet the following minimum network requirements:

Network connection shall be Ethernet Compliant IEEE 802.3, 802.3u, and 802.3x; 10/100 Mbps or higher, auto sensing full/half-duplex operations.

5. Serial Data Interface Requirements

6. On Screen Display Requirements

a. Decoders shall support a static text insertion capability and shall be capable of inserting a minimum of one (1) user configurable text messages of up to 20 characters in length.

b. Decoders shall be able to generate a date and time stamp in the video stream and shall be synchronized to a time-server on the network.

c. Decoders shall be able to display camera title in the video stream.

d. Decoders shall have the option to display or not display the on-screen text.

7. Management Requirements

a. Decoders shall be manageable through SNMP (v2), HTTP, FTP/TFTP, and/or Telnet/CLI.

b. The management system shall be provided to remotely configure and diagnose the Decoder.


C. Video Decoder, Type C – Card

Video Decoder, Type C- Card is a high density Decoder unit (card) for multiple video signals, with one Decoder per video signal, suitable for control center use in a slot based chassis.

1. General

a. Each Decoder of a Video Decoder Type C- Card shall meet all the Video Decoder, Type B requirements except the physical requirements as noted in section 936.2.06.B.

b. All Contractor provided Video Decoder Type C- Cards shall be compatible with, and of the same make as Video Decoder, Type C – Chassis provided by the Contractor

c. All Contractor provided Video Decoder Type C- Cards shall be compatible with, and of the same make as standalone Video Decoder, Type B provided by the Contractor

2. Physical

a. Each Video Decoder Type C- Card shall include a minimum of 4 Decoders per card with a corresponding number of BNC ports per Decoder.

b. Each Video Decoder Type C- Card shall include one RJ-45 Network port: 10/100 Mbps.

c. Video Decoder Type C- Card shall be fully contained and obtain power from the Video Decoder, Type C Chassis.


D. Video Decoder, Type C – Chassis

Video Decoder, Type C - Chassis is a high density rack mount unit that supports multiple Video Decoder Type C or Video Decoder Type C cards suitable for control center use.

1. General

a. All Contractor provided Video Decoder Type C- Chassis shall be compatible with, and of the same make as Video Decoder, Type C – Cards provided by the Contractor

2. Physical

a. Chassis shall support a minimum of 12 Video Decoder, Type C cards, or 12 Video Decoder, Type C cards, or a combination thereof up to 12 total cards.

b. Chassis shall be 7U or less and be 19” rack mountable.

c. Each Chassis shall be capable of operating on 1 internal power supply.

d. Each Chassis shall be capable of supporting a minimum of 2 internal power supply.




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