Environment & industry portraits
Match by scenario: hospital/cabinet/security → SY-1231; edge stamp+OCXO → SY-4096; plant multi-port → SY-8640. ★ marks advantage industries.
HIS, EMR, and security subnets need one LAN time base to keep logs aligned. SY-1231 delivers GNSS-disciplined NTP Stratum 1 with BeiDou+GPS and TCXO holdover on a single port sized for typical weak-current cabinets—datasheet capacity and protocol boundaries support clear acceptance.
Primary: SY-1231 (hospital)
Production and automation cabinets need an inspectable on-prem time source for PLCs, IPCs, and logs. Single-port LAN NTP with one AC or DC inlet and front-panel LOCK checks; plan capacity from the datasheet formula.
Primary: SY-1231
Cameras, NVRs, and access platforms need consistent timestamps for correlation and search. Cabinet GNSS NTP keeps the reference inside your control boundary and cuts drift—usually a single LAN port is enough without hardware-stamp or OCXO upgrades.
Primary: SY-1231
Beyond Ethernet NTP, sites often need TTL 1PPS, a minute PULSE, or RS-485 Modbus absolute time. Accept per channel—do not apply internal ns / 1PPS to NIC NTP. Shipping SY-1231 covers 1PPS + PULSE + Modbus (no IRIG); IRIG-B → SY-4096; multi-port / dual-supply → SY-8640.
Primary: SY-1231 (accept per channel)
Factory, campus, and BA edge cabinets: half-width 1U single-port with hardware-stamped NTP, OCXO holdover, and hardware time outputs (1PPS / IRIG-B / programmable pulse). SY-4096 fits this tier—does not replace the multi-port / dual-supply flagship.
Select SY-4096; bridge with SY-1231
Power, metals, and plant SIS often need separated management and timing ports, multi-gigabit links, and dual supply. SY-8640 targets that scene—do not tender unpublished items; bridge with SY-1231 or SY-4096.
Path: SY-8640; bridge with SY-1231 / SY-4096