Manufacturer profile
About Sage Instruments
Reviewed 2026-07-26
Sage Instruments, Inc. makes communications test equipment for analog, digital, wireless, and packet-voice networks. Its catalog identity covers multifunction field test sets, automated and remote test systems, voice-quality and VoIP measurement, T1 and E1 testing, and wireless signal analysis. Many manuals in this collection document earlier Sage platforms that the company's support pages now classify as discontinued.
History
Sage's official company material places its origins in the period following the early-1980s divestiture of AT&T and describes more than four decades of telecommunications test development. Its published milestones include integrated multifunction communications test sets for metallic and digital T1 circuits, digital-signal-processing-based communications instruments, voice and data impairment responders, cellular routing tests, multifrequency tone generation and analysis, and delay measurement. The sources do not give a precise incorporation date, so this draft does not infer one.
The collection includes manuals for systems such as the 930A, 935AT, 950RTS, and 960B. Sage's current support and discontinued-product pages are important for interpreting that mix: the 935AT and 950RTS appear among discontinued systems, while the current site continues to present products for analog, T1, E1, Ethernet, VoIP, and wireless applications. This profile therefore preserves both the legacy manual context and the active company context without implying that every catalog model remains supported. A current Watsonville contact address is visible on the site, but it is not promoted to headquarters because older page text contains a different facility reference.
Equipment specialties
- analog and digital telecommunications test sets
- T1 and E1 circuit testing
- voice and VoIP quality measurement
- remote and automated telecom testing
- wireless signal analysis
Sources
- Sage Instruments — Sage Instruments, Inc. (accessed 2026-07-26)
- About Sage Instruments — Sage Instruments, Inc. (accessed 2026-07-26)
- Customer Service — Sage Instruments, Inc. (accessed 2026-07-26)
- Discontinued Products — Sage Instruments, Inc. (accessed 2026-07-26)