ValueTronics International, Inc. Protocol Analyzer 4951C

The 4951C is a protocol analyzer from Agilent Keysight HP. A protocol analyzer is a tool (hardware or software) used to capture and analyze signals and data traffic over a communication channel. Such a channel varies from a local computer bus to a satellite link, that provides a means of communication using a standard communication protocol (networked or point-to-point). Each type of communication protocol has a different tool to collect and analyze signals and data. Features: Autoconfigure to automatically determine line parameters and to monitor data with the press of a key Bit error rate testing (BERT) to quickly determine the quality of your line 3 ½-inch diskette to store 618 kbytes of data, timing, lead status, programs, and configurations RS-170 Video port to view data externally Asynchronous terminal emulator Softkey-driven menus Printouts to all RS-232/V.24 ASCII printers via a separate port PC utilities to remotely control and analyze protocol analyzer data from a PC Nonvolatile memory to store data, programs and configurations Applications: The HP 4951C allows you to monitor and decode data transmission, test remote facilities from your location, simulate network components, and perform bit error rate tests. It can also be used as an asynchronous terminal or to install and maintain 3270 equipment, and to perform link level performance analysis. Protocols that can be tested include Async, DSC, SDLC (NRZI), HDLC, X.25, SNA, DDCMP and user-defined protocols. Datacomm Testing Solutions X.25 and SNA Link Level Performance Analysis Link level statistics packages, the HP 18333D for the HP 4951C for the HP 4952A, transform the instruments into statistical performance analyzers for the link level (level 2) of SNA and X.25 networks (SDLC and HDLC). These solutions provide a new way for network troubleshooters to look at data communication links. Key link events indicate the health of the network and are displayed in columns. Bar charts show line utilization real time. These statistics can be stored to disc and re­ viewed at a later time. 3270 Installation and Maintenance If you have IBM 3270 or compatible terminal systems, you know that problems with newly installed or suspect systems can devastate hosts and users. The HP 18332D (HP 495IC), 3270 installation and maintenance software packages pro­ vide easy, automatic, offline testing of multiple 3270 clusters by emu­lating many of the functions of a host computer. Data Communications Test Library This library of prewritten tests, is standard with every HP 4951C at no additional cost. The library contains 58 general purpose monitors and simulate programs on a single 3 ½" diskette to help you evaluate your network quickly and easily. Programs are written to diagnose common datacomm problems. The tests can be tailored for special configurations and applications. The library also contains installation and acceptance tests for printers and terminals. X.25 Troubleshooting Both analyzers provide X.25 troubleshooting. A decode is also pro­ vided to decode all components of each packet including facilities, calling/called addresses, cause and diagnostic codes, registration and call user data. The HP 18267A X.25 Test Library and Emulator pro­ vides a library of X.25 tests written in an emulator, and a procedure for using tests to troubleshoot X.25 installations.