HEALTHCARE FACILITIES INDUSTRY
PreciseSync GMC-300 GPS PTP Time Sync Server keeps your HIS, PACS, nurse call panels, CCTV recorders and building management systems aligned to UTC around the clock. When a cardiac event is logged in the ICU, every system across your facility records the same second, giving your clinical team a timeline they can act on and your accreditation team a record they can defend.
<15 ns
GNSS-LOCKED ACCURACY
<100 ns
PTP TIMESTAMP TO UTC
10,000+
NTP CLIENTS PER SECOND
THE HIDDEN BACKBONE OF EVERY CLINICAL RECORD
A modern hospital is no longer a single building with one clock above the reception desk. It is a tightly coupled network of HIS terminals, EMR workstations, PACS servers, nurse call consoles, pharmacy systems, laboratory analysers, CCTV recorders, access control gates and building management controllers. Every one of these systems stamps the data it produces with its own internal clock.
Without a single disciplined time reference, those clocks drift independently over hours, weeks and months. A nurse call alert fires at 14:02:11.341, the corridor CCTV records the same response at 14:02:11.106, and the EMR entry for the same event carries a third timestamp logged under a different server clock entirely. Clinical audit teams then spend the review meeting debating sequence instead of reviewing patient outcome.
Sertel designed the PreciseSync GMC-300 family to remove that ambiguity entirely. A satellite-locked Stratum 1 reference, built for continuous hospital operation, feeds every protocol your facility already runs, PTP, IRIG-B, NTP and 1 PPS, from a single compact appliance. Your entire OT network is locked to UTC within minutes of installation.
The problem
These are the failure patterns our field engineers encounter most frequently during IT commissioning audits and accreditation preparation reviews at multi-specialty hospitals, diagnostic centres and day-care surgical facilities across India and the Middle East.
Incident timelines that cannot be reconciled
Code blue reviews, adverse-event investigations and medico-legal cases all require a clean, agreed sequence of events. When the nurse call log, the ICU monitoring system, the CCTV recorder and the EMR each carry a slightly different clock, the post-event review becomes a dispute over timing rather than a structured root-cause analysis. Records that should take one shift to close can take weeks to resolve.
Legacy panels running next to a modern IP network
Older nurse call systems, fire alarm controllers, digital wall clocks and BMS panels still expect IRIG-B or simple pulse signals. Newer HIS, PACS, RIS, and access control systems run NTP or PTP over IP. Most facilities end up maintaining two parallel time distribution systems and paying the cost of both whenever either one drifts or fails.
Accreditation and medico-legal timestamps under challenge
NABH, JCI and insurance assessors expect defensible, sub-second-accurate timestamps on clinical records. A server clock that has silently drifted by minutes can convert a routine accreditation survey into a category C finding, or turn an otherwise clean incident report into a disputed legal document. The risk is not theoretical; it surfaces during every audit cycle.
A clinical network that must stay isolated
Hospital IT policy correctly segments the clinical network from the open internet, which means pulling time from a public NTP pool requires opening a hole in that segmentation and creates a dependency outside the facility's control. Healthcare operations need an on-premises Stratum 1 time source that the IT team owns, audits and controls at all times.
The Sertel solution
The GMC-300 family was engineered for environments where IRIG-B legacy panels and PTP digital systems coexist inside the same facility. Plug in the antenna, assign an IP address, and your entire hospital network is locked to UTC within minutes. Three hardware configurations cover installations from a single-building clinic to a multi-building tertiary care campus.
Multi-GNSS receiver
GPS, GLONASS, Galileo, BeiDou and NavIC-IRNSS reception across L1, L2 and L5 bands through a surge-protected antenna line that runs up to 100 metres from the equipment room to the rooftop, with IP67 protection at the antenna head.
Stratum 1 NTP and SNTP server
Serves more than 10,000 NTP clients per second with sub-millisecond LAN accuracy. Every HIS terminal, EMR workstation, laboratory PC and biomedical engineering system on your IP network gets the same traceable UTC reference from a single on-premises appliance.
PTP IEEE 1588v2 grandmaster
Sub-100-nanosecond PTP timestamps for diagnostic imaging, PACS, RIS and any department-level system that requires tighter accuracy than NTP can provide over a standard hospital LAN. Supports C37.238 Power Profile and IEEE 61850-9-3 for substations in the facility's electrical infrastructure.
IRIG-B and pulse outputs
Amplitude-modulated and DCLS IRIG-B for legacy nurse call panels, fire alarm controllers, digital wall clocks and analogue recording systems, so your existing infrastructure continues operating without a rip-and-replace. Multiple configurable pulse outputs at 1 PPS, 1 PPM, 1 PPH and custom intervals.
OCXO holdover
The high-stability OCXO oscillator maintains microsecond-level frequency accuracy and continues distributing a consistent time reference throughout any period of temporary GPS signal loss, including rooftop obstructions and adverse weather, without any impact on connected systems.
Hardened, redundancy-ready appliance
Dual redundant power supplies, SNMPv3 monitoring, syslog event logging, browser-based HTTPS configuration and a local front-panel keypad. The GMC-300-R adds full hardware redundancy across every critical subsystem for ICU, OT and command centre deployments where downtime is not an option.
Applications
ICU and critical care wings
Aligns nursing station alarms, patient monitoring consoles, CCTV recorders and EMR entries so that any deterioration event reconstructs to the same second across every record reviewed by the clinical team, the hospital committee or a legal assessor.
Emergency and trauma centres
Keeps triage timestamps, code response logs, resuscitation records and corridor CCTV footage on one common clock. Admission-to-treatment intervals are accurate enough to meet NABH Category C documentation standards without manual reconciliation.
Operation theatre complexes
Synchronises OT scheduling systems, anaesthesia workstations, surgical instrument tracking, pre-operative holding area clocks and post-operative recovery monitors across multi-OT wings, reducing timestamp gaps in surgical records to well under a second.
Diagnostic imaging and laboratory
Provides a traceable UTC reference to PACS servers, RIS workstations, CT and MRI console systems, and LIS platforms so that DICOM headers, study timestamps and report generation times are defensible during accreditation audits and insurance reviews.
Hospital information systems (HIS and EMR)
Delivers a Stratum 1 NTP source to the core HIS server rack so that every clinical entry across all departments, from outpatient registration to discharge summary, carries a consistent, satellite-disciplined timestamp regardless of which floor or building the record originates from.
Security, access control and facility management
Synchronises electronic access logs, CCTV footage and building management system events with clinical activity records, supporting unified security and compliance investigations without the need to manually adjust for clock differences between systems.
From our commissioning logs
During a post-event review at a 450-bed tertiary care hospital, the clinical quality team identified three different timestamps for the same adverse event in the cardiac ward. The nurse call console, the bedside monitor log and the duty nurse's EMR entry showed a 4-minute, 20-second spread. The review committee spent two sittings resolving the sequence before they could begin any corrective analysis.
We replaced the hospital's four independently running NTP servers with a single PreciseSync GMC-300-R grandmaster on the clinical IT backbone, distributed IRIG-B to the legacy nurse call panels and fire alarm controllers through fibre interface converters, and enabled PTP for the newer PACS and monitoring systems. Within one hour, every device on the network was locked to within 100 nanoseconds of UTC.
The next quality review cycle, three months later, produced a single time-aligned event sequence that closed in one sitting. That is the practical value of disciplined time: clinical decisions made on facts, not on logs that disagree with each other.
Relevant products
Stratum-1 GNSS Time Server
A compact 19 inch rack PTP time server with OCXO holdover and 15 ns timing accuracy under GNSS lock. One unit feeds PTP Ethernet, IRIG-B, 1PPS and any number of slave clocks.
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Redundant Stratum 1 GNSS Time Server
Redundant GNSS receivers, master clocks, comparator and dual power supplies in a 2U or 3U Eurocard chassis. Built for substations and control rooms where time must never stop.
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Stratum-1 PTP Time Server, DIN Rail
A panel-mounted PTP time server that fits inside control cabinets without rack space. Delivers IRIG-B (AM) and PTP Ethernet from a multi-constellation GNSS receiver with OCXO holdover.
Know moreFAQ
Talk to a Sertel field engineer about specifying the PreciseSync GMC-300 for your facility. We ship across India and the Middle East, commission on-site and support every deployment with full lifecycle maintenance. [ Button: Request a quote ] +91 98400 63003 © 2026 Sertel Electronics Pvt Ltd. All rights reserved.
