Bit Error Rate Testers Specifications

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General Specifications


	Network Protocol		An agreed-upon format for transmitting data between two devices.
	Your choices are...
	ATM		Asynchronous transfer mode (ATM) is a high-speed, point-to-point, switched network technology that uses fiber optic or Category 5 (Cat-5) copper cabling. ATM transmits data in cells rather than frames and can carry text, audio, and video. Each cell is a packet that contains 5 bytes of routing information and 48 bytes of data. Basic networks run at 155 Mbps, but implementations that use fiber optic cable can achieve speeds as high as 660 Mbps. The basic desktop standard runs at 25 Mbps.
	10Base-T Ethernet		10Base-T (twisted pair Ethernet) is one adaptation of the IEEE 802.3 (Ethernet) standard for local area networks (LAN). 10Base-T uses twisted-pair cables with a maximum length of 100 meters. These cables are thinner and more flexible than the coaxial cables used with 10Base-2 and 10Base-5 implementations. 10Base-T cables are connected with RJ-45 connectors. 10Base-T systems operate at 10 Mbps and use a baseband-type transmission.
	Fast Ethernet		Fast Ethernet is a networking standard that supports data transfer rates up to 100 Mbps. There are two basic types of Fast Ethernet: 100Base-X and 100Base-T. 100Base-X uses two physical links, one for transmission and one for reception, between nodes. 100Base-T uses medium access control protocol (MAC). The IEEE 802.3 committee developed the standards for Fast Ethernet.
	Gigabit Ethernet		Gigabit Ethernet operates over multimode fiber optic cable, single mode fiber optic cable, and unshielded twisted-pair cable at 1000 Mbps. It is defined in the IEEE 802.3u standard and used primarily as a high-speed enterprise backbone.
	FDDI		Fiber distributed data interface (FDDI) is a reliable, high-speed backbone for mission-critical and high-traffic networks. It can transport data at a rate of 100 Mbps and support up to 500 stations on a single network. FDDI was designed to run through fiber optic cables, transmitting light pulses to convey information between stations. FDDI can also run on copper using electrical signals.
	Fibre Channel		Fibre Channel technology uses optical fibers to connect computers and peripheral devices that require high bandwidth. It functions via a serial data transfer architecture that is compatible with SCSI. The most prominent Fibre Channel standard is Arbitrated Loop (FC-AL), which can support full-duplex data transfer rates of 100 MBps.
	Frame Relay		Frame relay is a standard communications protocol and simplified form of packet-switching. It is similar to X.25, which uses header information to route synchronous frames of data to different destinations. Frame relay is specified in CCITT recommendations I.122 and Q.922. These specifications add relay and routing functions to the data link layer (layer 2 of the OSI reference model).
	FPDP		Front panel data port (FPDP) is a high-speed, 32-bit, parallel, synchronous interface. Versa Module Eurocard (VME) boards are interconnected by ribbon cables which are routed across the front panels. FPDP is the VITA-17 standard from the VMEbus International Trade Association (VITA).
	E1		E1 is a wide-area digital transmission protocol used mainly in Europe. It carries data at a rate of 2.048 Mbps.
	iSCSI		Internet SCSI interface (iSCSI) is a protocol for transporting small computer system interface (SCSI) commands and data across an Internet protocol (IP) network.
	ISDN		Integrated services digital network (ISDN) is a communication protocol offered by telephone companies which allows telephone networks to carry data, voice, and other traffic.
	Modem		A modulator-demodulator or modem is a device that converts digital and analog signals. At the source, a modem converts digital signals to a form suitable for transmission over analog communication facilities. At the destination, the analog signals are returned to their digital form. Modems allow data to be transmitted over voice-grade telephone lines.
	Parallel		Parallel interfaces are computer boards or ports which transmit multiple bits of data simultaneously along different wires.
	PPP		Point-to-point protocol (PPP) is a mechanism for creating and running IP and other network protocols over a serial link (e.g., dial-up connections).
	Serial		Serial interfaces are computer boards or ports which transmit data one bit after another over a single wire.
	SLIP		Serial-line Internet protocol (SLIP) is an encapsulation method for transmitting IP packets over a serial connection. Because its architecture does not differentiate network protocols, SLIP cannot transmit more than one network protocol at a time. Typically, SLIP is used with transmission control protocol/Internet protocol (TCP/IP), a popular suite of communication protocols. By using a dial-up SLIP server, remote computers can connect to the Internet with TCP/IP.
	SONET		Synchronous optical network (SONET) defines the rates and formats for synchronous data transmission over fiber-optic networks. SONET is specified in ANSI T1.105, ANSI T1.106, and ANSI T1.117 from the American National Standards Institute (ANSI). SONET is technically consistent with synchronous digital hierarchy (SDH), a European standard from UTI-T.
	T1		T1 is a digital, wide area network (WAN), carrier protocol. Using AMI or B8ZS coding, T1 transmits digital signal level 1 (DS-1) formatted data at 1.544 Mbps through the telephone-switching network.
	TCP/IP		Transmission control protocol / Internet protocol (TCP/IP) is a suite of communications protocols used to connect hosts on the Internet. TCP/IP uses several protocols. TCP and IP are the main ones.
	1394a-b (FireWire^®)		FireWire^® is a cross-platform implementation of the high-speed serial data bus defined in the IEEE 1394 standard from the Institute of Electrical and Electronics Engineers (IEEE). A registered trademark of Apple Computer, FireWire is designed to speed the movement of multimedia data and large files between personal computers (PC) and digital consumer products such as camcorders, video tapes, video disks, set-top boxes, and music systems. FireWire features simplified cabling, hot swapping, and transfer speeds of up to 400 Mb/sec.
	RS232		RS232 is a serial, binary-data interface between data terminal equipment (DTE) and data communications equipment (DCE).
	RS422		RS422 is a balanced serial interface for the transmission of digital data. It was designed for greater distances and higher Baud rates than RS232.
	RS485		Like RS422, RS485 is a balanced serial interface for the transmission of digital data. The difference between RS422 and RS485 is that RS485 can be transformed into a multi-point application.
	Other		Other unlisted network protocols.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Link Type:
	Your choices are...
	Synchronous		In synchronous communications, data is not sent in individual bytes, but as frames of large data blocks. Frame sizes vary from a few bytes through 1500 bytes for Ethernet, or 4096 bytes for most frame relay systems. The clock is embedded in the data stream encoding, or provided on separate clock lines so that the sender and receiver are always in synchronization during frame transmissions.
	Asynchronous		Asynchronous communications send individual characters (one at a time) that are framed by a start bit and 1 or 2 stop bits.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Test Pattern Supported:		A BERT pattern is a known sequence of bits. The bit pattern received by a BERT is compared against the known pattern, and any differences from the known pattern are errors.
	Your choices are...
	QRSS		The quasi-random signal source (QRSS) is a pseudo-random sequence based on a twenty-bit shift register, and repeats every 1,045,575 bits.
	1 in 8		This 8-bit pattern contains a single 1 and is used primarily to test timing (clock) recovery.
	3 in 24		This 24-bit pattern contains three 1's
	All Ones		This pattern is composed only of 1's. When applied, it causes the power driver to consume the maximum amount of power. The all-ones pattern is used regularly to verify that direct current (DC) power is regulated correctly.
	All Zeros		This pattern is composed only of 0's.
	63		This pattern is composed of a sequence of 63 bits.
	511		This pattern is composed of a sequence of 511 bits.
	2047		This pattern is composed of a sequence of 2047 bits.
	DDS		DDS patterns are designed primarily to test digital data services (DDS) circuits. These data services are 64 kbps or less and include patterns such as DDS-1, DDS-2, DDS-3, and DDS-4.
	User Pattern Setting		The device allows the user to set the testing patterns.
	Other		Other unlisted test patterns.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Data Rate:		The rate at which data is transferred through the system.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

Form Factor / Port


	Form Factor:
	Your choices are...
	Hand Held		Devices are designed to be used while held by hand.
	Notebook		Devices are similar to notebook or laptop computers.
	Desktop		Devices are designed to sit on a table or desktop.
	Rack Mount Unit		Devices mount in racks and come with hardware such as rail guides, flanges, or tabs. Some rack-mounted devices fit in a standard 19” telecommunications rack.
	Integrated Circuit (IC) / Chip		Devices are integrated circuit (IC) chips that mount on printed circuit boards (PCBs).
	Printed Circuit Board (PCB)		Devices are printed circuit boards (PCBs) that attach to enclosures or plug directly into computer backplanes.
	Other		Other unlisted form factors.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Interface Port
	Your choices are...
	BNC		Bayonet Neil-Concelman (BNC) connectors were designed for military applications, but are used widely in video and RF applications to 2 GHz. BNC connectors have a slotted outer conductor and a plastic dielectric that causes increasing losses at higher frequencies. BNC connectors are usable above 4 GHz as long as the slots radiate signals; however, these devices may not be mechanically stable to 10 GHz. Both 50Ω and 75Ω BNC connectors are available. BNC connectors are also known as bayonet navy connectors or baby Neil connectors.
	FireWire® (IEEE 1394)		FireWire^® is a cross-platform implementation of the high-speed serial data bus defined in the IEEE 1394 standard from the Institute of Electrical and Electronics Engineers (IEEE). A registered trademark of Apple Computer, FireWire is designed to speed the movement of multimedia data and large files between personal computers (PC) and digital consumer products such as camcorders, video tapes, video disks, set-top boxes, and music systems. FireWire features simplified cabling, hot swapping, and transfer speeds of up to 400 Mb/sec.
	G.703		G.703 is a Consultative Committee on International Telephony and Telegraphy (CCITT) standard for voice-over-digital carriers such as T1 and E1. G.703 provides specifications for pulse code modulation (PCM) at a bandwidth of 64 kbps (+/- 100 ppm). Multiplying the base unit produces data rates of 1.544 Mbps for T1 and 2.048 Mbps for E1. Typically, G.703 is used to interconnect data communications equipment (DCE) such as multiplexers.
	G.704		G.704 is the framing specification for G.703. It allows a carrier to “steal” a 64 kbps time slot (TS0) from a 2.048 Mbps line and provide timing. This leaves 31 time slots for the data, an amount which equals a bandwidth of 1.984 Mbps. G.703 lines with G.704 framing are called Structured G.703 lines. Typically, carriers offer G.704 for networks that are built-up on a cross-connect basis. Unstructured G.703 is used with multiplexer-based infrastructures.
	Parallel		Parallel interfaces can handle multiple bits transmitted at the same time.
	RJ-45		RJ-45 connectors resemble standard telephone connectors, but are twice as wide with eight wires. RJ-45s are used to connect personal computers (PCs) to local area networks (LANs), and for phones with lots of lines.
	RS232		RS232 is a serial interface approved by the Electronic Industries Association (EIA). RS232 uses two-way transmissions and is common in low-end professional and consumer equipment.
	RS422		RS422 is a standard serial interface that supports multipoint connections. By contrast, RS423 supports only point-to-point connections.
	RS485		RS485 is similar to RS232, but uses three-way instead of two-way transmissions. RS485 is often used in applications where a single controller must control multiple devices. Up to 64 devices may be connected under RS485.
	USB		Universal serial bus (USB) is the standard serial bus for low-to-medium speed peripheral-device connections to personal computers (PCs) and keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc.
	V.24		V.24 is an ITU-T standard that defines the interchange circuits between data terminal equipment (DTE) and data communication equipment (DCE). The ITU Telecommunications Standardization Sector (ITU-T) coordinates telecommunication standards on behalf of the International Telecommunications Union (ITU).
	V.35		V.35 is a partially balanced, partially single-ended interface specification. It is an ITU-T standard for data transmission at 48 Kbps over 60 to 108 KHz group-band circuits. V.35 contains the 34-pin V.34 connector specifications normally implemented with modular RJ-45 connectors.
	X.21		X.21 is a digital signaling interface recommended by the ITU-T. It includes specifications for DTE/DCE physical interface elements. X.21 supports data transfer at up to 2 Mbps; however, the most commonly used transfer rate is 64 kbps.
	Other		Other unlisted interface port types.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Features


	Remote Control Port?		The device can be controlled or programmed remotely by connecting a computer, modem, or other device to the remote port.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Printer Port?		The device has a port for a printer.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Indicators?		The device uses light-emitting diodes (LEDs) to indicate power, the presence of a clock and data, sync loss (synch), and error counting.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	External Clocking?		The unit can be clocked externally by connecting a timing device.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Customized Pattern Testing?		The user can program the unit for custom made patterns and procedures for repeatable testing.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Wireless?		The device is used to test wireless systems.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Software Included?		Test software is included with the device.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Standards and Certifications


	RoHS Compliant		Restriction of Hazardous Substances (RoHS) is a European Union (EU) directive that requires all manufacturers of electronic and electrical equipment sold in Europe to demonstrate that their products contain only minimal levels of the following hazardous substances: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl and polybrominated diphenyl ether. RoHS will become effective on July 1, 2006.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	WEEE Compliant		Waste Electrical and Electronics Equipment (WEEE) is an EU directive designed to encourage the reuse, recycling and recovery of electrical and electronic equipment. WEEE establishes the requirements and criteria for the collection, treatment, recycling and recovery of this equipment. WEEE also makes producers responsible for financing these activities. Retailers and distributors must provide a way for consumers to return used or obsolete equipment without charge.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Bit Error Rate Testers Specifications

Network Protocol:

Link Type:

Test Pattern Supported:

Data Rate:

Form Factor:

Interface Port:

Remote Control Port?

Printer Port?

Indicators?

External Clocking?

Customized Pattern Testing?

Wireless?

Software Included?

RoHS Compliant?

WEEE Compliant?

Help with Bit Error Rate Testers specifications: