The SAGE INSTRUMENTS 930A is a portable communications test set that integrates signaling, transmission impairment measurement, and return loss measurement capabilities into a single unit. It functions as a complete voiceband transmission measurement platform with built-in Dial Pulse, Multi-Frequency, and Dual-Tone Multi-Frequency senders, plus talk battery supply for live circuit testing. The instrument is engineered for telecommunications testing across network switching, DS1 facilities, and trunk validation.
Technical Specifications
Measurement Capabilities
• Level and Frequency Measurement
• Noise Measurement
• Noise-to-Ground Measurement
• Signal-to-Noise Ratio (SNR) Measurement
• Return Loss Measurement
• DC Volt and Milli-ammeter integrated functionality
Digit Receiver and Analyzer
• Four independent registers for digit collection
• Per-register configuration: MF, DTMF, or DP modes
• Storage capacity: 18 digits per record
• Automatic record closure on ST, STP, ST2P, or ST3P detection
• MF and DTMF analysis: amplitude, frequency, and digit/interdigit timing in milliseconds
• DP analysis: pulse rate (pulses per second), break percentage, interdigit timing
Signal Generation
• Dial Pulse Sender
• Multi-Frequency Sender
• Dual-Tone Multi-Frequency Sender
• Talk Battery Supply
Impedance Support
• 150 Ohms
• 600 Ohms
• 900 Ohms
• 1200 Ohms
– Key Features
Signaling and Supervision
Supports E&M, Loop, Ground-Start, PCM, SF, 2-Wire Access, 4-Wire Access, Loop & Ground Start, and Signaling Types I and V (E&M).
Circuit Simulation
Operates as either a central office or terminating equipment (CPE, Inter-LATA carrier, DEMARC, POP).
Circuit Coverage
Tests Equal Access (Feature Group D), CAMA, TSPS, Toll, IDDD, Data PBX, PLAR, MRD, FXO/FXS (optional), DS-1 PCM (optional), and DS-1 PCM Dual-Direction Drop/Insert (optional).
– Typical Applications
DEMARC point validation, central office testing, PBX installation verification, and digital switch commissioning. Feature Group A-D transmission and signaling test capability supports legacy and modern trunk configurations.
– Compatibility & Integration
Expandable architecture accepts hardware and software options including enhanced DP, MF, and DTMF receiver/analyzer modules, Peak to Average Ratio measurement, and 3-Level Impulse testing.
