Master-Slave Clock System
YZ-9200 master-slave clock: a YZ-9810 master clock disciplines via BeiDou/GPS and distributes to the entire site through network switches. Supplied alongside the YZ-9580 LED digital clock family (332S / 422S/D / 5S/D / 42S/D), 35cm analogue slave clocks and Wi-Fi wireless analogue / digital slave clocks — for hospitals, airports, stations, plants and office campuses.
Overview
YZ-9200 Master-Slave Clock System — a YZ-9810 master, disciplined by BeiDou/GPS, distributes time through network switches to YZ-9580 LED digital sub-clocks (3.2"/4"/5"/6" digit heights) across hospitals, airports, stations, and campuses.
System Composition
┌──────────────────┐
│ BeiDou / GPS │
└────────┬─────────┘
│
┌────────▼─────────┐
│ YZ-9810 Master │ ← Stratum 1, hot-redundant
└────────┬─────────┘
│ NTP / IRIG-B / PoE-IRIG-B
┌────────▼─────────┐
│ Switch / PoE │
└────────┬─────────┘
│
┌─────────┼─────────┐
│ │ │
LED Clock LED Clock Analog Slave
(corridor) (OR) (meeting room)Sub-clock Types
- LED digital — 6/8-digit displays, 3.2" / 4" / 5" / 6" heights; date + time + day-of-week
- Countdown — for OR / emergency rooms; remote task dispatch
- Analog quartz slave — waiting halls, offices
- Giant LED — stations, plazas, custom heights to > 30 cm
Vertical Solutions
Hospital Master-Slave
- Hospital-wide unified display; surgery / anesthesia / ICU timestamps traceable
- OR countdown screens slaved to central time
- Time consistency with HIS / EMR — JCI audit ready
Airport / Station
- Terminal, security, gate displays unified
- Slaved to FIDS / PA systems
- Single master drives 256 LED slaves
Campus / Plant
- Outdoor giant LED + indoor sub-clocks unified
- Shift-change cues slaved to LED displays
Tertiary & new general hospitals, airport terminals, train stations, metro stations, plant control buildings
OR / Anesthesia Timers
YZ-9580-332S dual-row LED supports OR/anesthesia dual timers plus temperature, humidity and date
Wired + Wireless Mix
Wired clocks for core areas, wireless clocks for hallways and offices — no rewiring, low maintenance
Traceable Time
Site-wide time traceable to the master clock and BeiDou — meets medical and forensic requirements
Customisable Bezels
Digit size, content, casing colour and movement type all customisable
Standard Solution
Catalogue YZ-9200 master-slave package
- Master + slave clocks
- Standard LED sizes
- Standard I/O
- Standard warranty
Project Customisation
Site-wide planning and custom displays for new hospitals / airports / stations
- Site survey
- Custom displays
- Wired + wireless mix
- Site-wide calibration
Long-Term Operations
Inspection + replacement parts
- Inspection
- Spare parts
- Replacement of failed units
Dispatch Auto-monitoring
YZ-8000 is a provincial-and-prefectural-integrated dispatch automation monitoring system. It safeguards the secure, stable and efficient operation of grid automation systems — providing centralised monitoring of dispatch control systems, auxiliary facilities and machine-room environments across provincial and prefectural dispatch centres.
NTP Time Server
Flagship YZ-9811. Delivers precision NTP / SNTP / PTP timing and timestamp services to compute systems, process control, e-commerce, B2B and database clusters. Widely deployed in government, finance, healthcare, broadcasting and telecom core sites — traceable to BeiDou and the National Time Service Centre BPL long-wave.
Satellite Timing Security
Flagship YZ-9770 — in April 2022 it became the first device of its class in China to pass SGEPRI certification. Detects and isolates GNSS spoofing, jamming and suppression to deliver a "timing firewall" for grids and other critical infrastructure. Already deployed across SGCC Chongqing and other provincial grids.
Time-Sync Monitoring
A monitoring & testing family for substations, power plants, dispatch centres and data centres. Flagship models: YZ-9100 monitoring system, YZ-9900 benchtop tester, YZ-9910 handheld tester. Combined with YZ-9880 satellite common-view timing devices for traceable cross-station synchronisation.
Time Sync Devices
Our flagship product line. 1U/2U/4U master/slave clocks with multi-source time fusion (BeiDou + GPS + IRIG-B(DC) + PTP + BPL long-wave) and dual-channel hot-standby. Includes the YZ-9846 (compliant with SGCC "Four-Unification" Class-II clock spec) and self-controllable single- / dual-BeiDou variants.
Find the right model
Our engineers combine your site topology, protocols and alarm logic to recommend the right model and customisation.