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.
Overview
Yinzhong's Time-Sync Monitoring family targets substations, power plants, dispatch centres, and data centres for continuous monitoring and verification of timing accuracy.
Models:
- YZ-9100 — rack-mount centralised monitoring
- YZ-9900 — desktop engineering-grade test set
- YZ-9910 — handheld field tester
Why Monitor
Once a timing device is deployed, is it actually meeting spec? Are devices in sync with each other? Without monitoring you cannot answer. Core value:
- Always-on inspection — no human attendance, auto record + alarm
- Fault isolation — distinguish GNSS anomaly vs. network jitter vs. device failure
- Compliance evidence — accuracy logs for audits, MLPS 2.0, outage reviews
- Post-mortem visibility — pre-fault accuracy curves at a glance
Monitoring Dimensions
| Dimension | Description | Typical alarm |
|---|---|---|
| Satellite state | Sats locked / C/N0 / tracking | < 4 sats |
| 1PPS offset | Rising-edge delta vs. reference | > 1 μs |
| NTP/PTP offset | Offset to upstream | > 100 μs / > 1 μs |
| IRIG-B integrity | Frame integrity / quality | error rate > 0.1% |
| Device health | Master/slave failover / PSU / fan | any anomaly |
Deployment Modes
Centralised (YZ-9100)
Rack-mount unit ingesting 16–64 channels of 1PPS / NTP / IRIG-B / PTP — web dashboard + alarms. Sub-stations and dispatch centres.
Engineering (YZ-9900)
Desktop test set with ns-grade 1PPS / IRIG-B / PTP test capability — labs, factory acceptance, third-party verification.
Handheld (YZ-9910)
Battery-powered field tester — quick verdicts during maintenance.
Grid design institutes, commissioning teams, substation acceptance/maintenance crews, plant secondary specialists
Full-Network Monitoring
YZ-9100 monitors timing accuracy, protocol status and channel health across timing-related devices, with tiered alarm forwarding
All-Protocol Testing
YZ-9900/9910 support NTP/PTP/SNTP/IRIG-B/PPS/PPM/PPH/DCF77/serial
Handheld Portability
YZ-9910 7" touch + physical keys — one device for acceptance and maintenance
Common-View Timing
YZ-9880 enables traceable sync between dispatch centres and substations
Catalogue Selection
Choose YZ-9100 / 9900 / 9910 / 9880 directly
- Standard I/O
- Factory tested
- Standard warranty
Project Deployment
Combine multiple devices into a monitoring network
- Point planning
- Site commissioning
- Alarm integration
Long-Term Support
Inspection + calibration + spares
- Periodic calibration
- Inspection
- Spares
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.
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 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.