| Testability from data communications interfaces to high speed digital links and multiplexes at 2, 8 and 34 Mbit/s in a single portable and battery operated unit provides unrivalled flexibility for support of modern digital and data networks and equipment. The 2852 Digital Communications Analyzer provides most of this functionality but limits the data test capability to Codirectional and Contradirectional interfaces. With the addition of DC and battery power options, a full range of field and exchange digital and data measurement requirements can be met with a choice of desktop and rack-mountable packages. A choice of RS-232 or IEEE-488 remote control completes the picture, extending remote applications from unattended monitoring to laboratory and factory test requirements. PCM FRAMING SYSTEMS 2852 and 2853 are able to generate and receive all commonly used framing systems up to 34 Mbit/s, for both the European and North American digital hierarchies. The instrument can be optioned as European or hybrid versions, and this includes an all bit rate version (European plus North American). Thus 2852 and 2853 have the flexibility to address global applications, including operation in International Gateways where there is a requirement to test mixtures of European and North American traffic carried on satellite systems. 56 kbit/s and 64 kbit/s Channel Testing Individual channels within T1, 704, 2048, 8448 (G.704/G.744 and G.742), and 34368 kbit/s can be tested at 64 or 56 kbit/s, assisting in testing and fault location within digital data networks and cross-connect switches. |