The SAGE INSTRUMENTS 930i is a versatile communications test set engineered for voiceband testing across analog and digital trunks, cellular test lines, and hybrid networks. It combines laboratory-grade VF TIMS (Transmission Impairment Measuring Set) with full BERT (Bit Error Rate Tester) capabilities, RS-232 control, and dual-channel simulation and monitoring. Deploy it at IADs, gateways, switchrooms, PBX closets, demarcation points, and production environments to isolate complex signaling faults and validate transmission performance.
Technical Specifications
-# Transmission Measurement
• Level and frequency measurements from 20 Hz to 5000 Hz
• Psophometric and 3 kHz flat-weighted noise measurements
• Signal-to-noise ratio (SNR) and noise-to-ground quantification
• Return loss for 2-wire and 4-wire topologies
• Frequency sweep capability
• Programmable dual-tone generator (level, frequency, cadence)
• Programmable echo canceller disabler tone
• 100/102 test line support
-# E1 Digital Interface
• 2.048 Mbit/s E1 support with PCM30/31, CRC4, and HDB3/AMI line codes
• Internal high-stability clock or loop-timed synchronization
• Terminate, dual-direction drop, insert, and monitor modes
• Real-time A, B, C, and D bit display and control
• aLaw and uLaw encoding
• Full-rate and 64 kbit/s BERT measurements per G.821 and M.2100
• Alarm and error generation/detection
• DS0 loopback with gain control
• Protected monitor point voltage measurement
-# Analog Signaling
• Loop start and ground start (2-wire/4-wire) with contact closure, normal, and reverse battery
• E&M Types I–V with send-M and send-E signaling
• Dry contact, wink signaling with detection and timing
• Delay and immediate dial modes
• DP, MF, and DTMF addressing
-# E1 Signaling
• POTS off-hook line and DTMF register signaling
• R1 support
– Key Features
Simultaneous dual-side monitoring and simulation isolates signaling and transmission faults in complex networks. RS-232 control enables remote operation and integration with test automation frameworks. Hybrid analog/digital architecture supports legacy voiceband circuits and modern digital trunks without topology constraints.
– Typical Applications
Telco gateway troubleshooting, PBX/IAD commissioning, carrier demarcation acceptance testing, cellular interconnect validation, production line regression testing.
