IFR Aeroflex 2853S Communication Analyzer

The IFR Aeroflex 2853S is a digital communications analyzer that generates and detects test patterns across PCM and data communication systems. Operating from 50 bit/s to 34 Mbit/s, it simultaneously demultiplexes and monitors framing errors and alarms at 2, 8, and 34 Mbit/s hierarchies. The instrument functions as both pattern generator and error detector, supporting framed and unframed test patterns across all levels within 8 and 34 Mbit/s signals, including 64 kbit/s and n × 64 kbit/s channels.

Technical Specifications

• Data Rate Range: 50 bit/s to 34 Mbit/s


• Demultiplexing & Monitoring: Simultaneous framing error and alarm detection at 2, 8, and 34 Mbit/s


• Test Pattern Modes: Framed and unframed generation at all hierarchical levels


• Supported Standards: G.821, G.921, M.2100, G.962 analysis


• Framing Systems: European and North American digital hierarchies to 34 Mbit/s


• Common Bit Rates: 704 kbit/s, 1544 kbit/s (T1/T1 ESF/DDS), 2048 kbit/s (G.704 variants), 3152 kbit/s (DS1C), 6312 kbit/s, 8448 kbit/s (G.744), 34368 kbit/s (G.751)

Key Features

• Data Interfaces: RS-232, X.21, V.35, RS-449 (V.36), RS-530, codirectional, contradirectional, and optional EUROCOM


• Interface Modes: DTE standard; DCE optional


• Remote Loopback: ITU-T V.54 via control lines for automated circuit testing


• Measurements: Propagation delay, frequency deviation, frequency and level measurements, DTMF, and CAS


• Form Factors: Desktop and rack-mountable configurations


• Power Options: DC power and internal battery operation for field deployment


• Remote Control: RS-232 or IEEE-488 interfaces

Typical Applications

• PCM circuit and equipment validation across 50 bit/s to 34 Mbit/s range


• Framing error and alarm analysis in digital hierarchies


• Pattern generation and error detection in T1, E1, and higher-order signals


• Data interface testing and loopback verification

Compatibility & Integration The 2853S interfaces with standard and optional data circuit protocols across North American and European digital hierarchies, enabling end-to-end testing of complex PCM and data communication networks.