The SAGE INSTRUMENTS 930A,01 is a communications test set that combines voiceband transmission measurement, return loss analysis, and multi-format signaling in a single platform. It simulates both PBX and Central Office switches, enabling end-to-end circuit testing without dual-location personnel. The unit supports Feature Groups A through D testing and operates across multiple supervision types including E&M, Loop, Ground Start, PCM, and SF.
Technical Specifications
Transmission Measurement Functions
• Level and Frequency
• Noise and Noise-to-Ground
• Signal-to-Noise Ratio
• 3 kHz Flat Noise
• C-MSG and C-Notch weighting
• Return Loss measurement
Signaling & Supervision
• Loop, Ground Start, E&M (Types I and V), and Reverse Battery signaling
• Talk battery provision for trunk communication
• Supervision types: E&M, Loop, Gnd-Start, PCM, SF
Dialing & Digit Analysis
• Dial Pulse (DP) Sender/Analyzer: measures pulses per second, %break, interdigit time
• DTMF Sender/Analyzer: analyzes tone amplitude, frequency, digit/interdigit timing
• MF Sender/Analyzer: analyzes tone amplitude, frequency, digit/interdigit timing
• Digit collection into four independent registers, each supporting MF, DTMF, or DP formats, up to 18 digits per register
Impedance Support
150, 600, 900, and 1200 Ohms
– Key Features
Switch simulation capability eliminates the need for personnel at remote test points. Multi-format digit analysis accommodates legacy and modern signaling simultaneously. Register-based digit collection enables protocol-independent testing across mixed network environments.
– Typical Applications
DEMARC point validation, Central Office circuit testing, PBX system commissioning, digital switch installation verification, and Equal Access feature group qualification (A–D).
– Optional Capabilities
Modular expansion includes DP/MF/DTMF receiver analysis, peak-to-average ratio measurement, impulse noise detection, and DS-1 PCM drop/insert with D4 and ESF superframe support—including real-time A and B signaling bit display across 24 channels and DSX voltage measurement.
