Telecommunications
2850B/BS 2851/S
The 2851 Digital Communications Analyzer provides all of this plusdata interface testing as standard for all commonly used interfaces.
A structured data option enables detailed testing of X.50, 6+2 andreiterated data systems. With the addition of DC and battery poweroptions, a full range of field and exchange digital and data measure-
ment requirements can be met with a choice of desktop and rack-mountable packages. A choice of RS-232 or IEEE-488 remote con-trol completes the picture, extending remote applications from unat-
tended monitoring to laboratory and factory test requirements. PCM FRAMING SYSTEMS 2850B and 2851 are able to generate and receive all commonly usedframing systems up to 8448 kbit/s, for both the European and NorthAmerican digital hierarchies.The instruments can be optioned as European or hybrid versions,and this includes an all bit rate version (European plus NorthAmerican).Thus 2850B and 2851 have the flexibility to address global applica-tions, including operation in International Gateways where there is a
requirement to test mixtures of European and North American traf-fic carried on satellite systems.
Desktop and rack-mountable digital testers for a wide range of PCM and data measurementapplication s s up to 8 Mbit/s
•Combined data and PCM rate tester•Framed and Unframed operation at 2048and 8448 kbit/s with option of 1544kbit/s (T1) or704kbit/s•All data test interfaces as standard: RS-232, X.21(X.24), V.35, RS-449 (V.36)
(2851), codirectional, contra-directional
with EUROCOM optional (2850B & 2851) •50 bit/s to 2.5Mbit/s in 1bit/s steps•Data interface and analog channelaccess•G.821, G.921, G.826, M.2100 and G.962analysis•Measurements include propagationdelay, frequencydeviation, frequencyand
level gage block, DTMFand CAS•DC powerand internal batteryoptions•Remote control via RS-232orIEEE-488with optional PC applications software 56 kbit/s and 64kbit/s Channel Testing Individual channels within T1, 704, 2048 and 8448 kbit/s(G.704/G.744) can be tested at 64 or 56 kbit/s, assisting in testingand fault location within digital data networks and cross-connectswitches. n x64kbit/s Channel Testing The expanding services at n x 64 kbit/s can be tested where they arecarried within primary rate digital signals. All systems and n x 64 kbit/s cross-connect switches are catered for with the flexibil-ity of contiguous and non-contiguous channel selection. The 2850B Digital Transmission Analyzerpro-vides 64kbit/s, 2and 8 Mbit/s errorperform-
ance analysis, and in addition otherfunctionali-
tysuch as DTMFand channel associated sig-naling capability, and propagation delaymeas-urement. Forthe verylatestspecifications visit
www.aeroflex.com