---
title: "Clocks"
slug: "fmadio-os-monitoring-clocks"
updated: 2025-08-18T14:56:49Z
published: 2025-08-18T14:56:49Z
canonical: "docs.fmad.io/fmadio-os-monitoring-clocks"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fmad.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Clocks

System clock monitoring

## NTP Configuration

Example NTP system dashboard

![](https://cdn.document360.io/b9aab0c4-36d0-4616-9673-30b661455571/Images/Documentation/image(359).png?sv=2026-02-06&spr=https&st=2026-11-13T20%3A08%3A40Z&se=2026-11-13T21%3A08%3A40Z&sr=c&sp=r&sig=1HCLs4YFTzFTuOWcPPciVn0ECHnpn7ulOtUlPqFG7JE%3D)

## PTPv2 Configuration

Example PTPv2 configuration

![](https://cdn.document360.io/b9aab0c4-36d0-4616-9673-30b661455571/Images/Documentation/image(360).png?sv=2026-02-06&spr=https&st=2026-11-13T20%3A08%3A40Z&se=2026-11-13T21%3A08%3A40Z&sr=c&sp=r&sig=1HCLs4YFTzFTuOWcPPciVn0ECHnpn7ulOtUlPqFG7JE%3D)

### Prometheus

The follow shows the mapping to Prometheus names

| Name | Prometheus | Description |
| --- | --- | --- |
| PTP Grandmaster → NIC Clock | fmadio_ptp_GMSync | 0 - PTP GM and the NIC clock are not synchronized 1 - PTP GM and the NIC clock are synchronized |
| NIC Clock → System Clock | fmadio_ptp_SysSync | 0 - NIC clock and System clock are not synchronized 1 - NIC clock and System clock are synchronized |
| System Clock → CAP Clock | fmadio_ptp_iSysSync | 0 - System clock and FPGA Clock are not synchronized 1 - System clock and FPGA Clock are synchornized |

### Syslog

The following shows the syslog JSON version of the GUI status. Example single line status

```json
2025.07.19-23:55:00.119795 (-04:00) | fmadio200v4| local7.info     | fmadio    | 
{
"module":"system","subsystem":"ptp"        ,"timestamp":1752983700,"ver":"10667",
"TimeFPGA":1752983700112643050,
"TimeSYS":1752983700112647936,
"GMOffset":  -16.00,
"GMSync":true,
"GMMaster":"00aabb.ccddee.ff000",
"SysOffset":   13.00,"SysSync":true,
"iSysOffset":   -7.08,"iSysSync":true,
"NTPOffset":    0.00,"NTPSync":false,"NTPMaster":"",
"GMUpTime":78598,"SysUptime":78598,"iSysUptime":78598,"PPSUptime":0,"NTPUptime":0,
"PPSPeriod":0.000000000,"PPSOffset":0,"PPSdPhase":0,"PPSdZero":0,"PPSCnt":0,
"Clk156Period":6.400000,"Clk156Offset":0,
"Clk250Period":4.000037,"Clk250Offset":-7,
"Clk322Period":3.200007,"Clk322Offset":-7
}
```

| Name | Syslog | Description |
| --- | --- | --- |
| PTP Grandmaster → NIC Clock | GMSync | 0 - PTP GM and the NIC clock are not synchronized 1 - PTP GM and the NIC clock are synchronized |
| NIC Clock → System Clock | SysSync | 0 - NIC clock and System clock are not synchronized 1 - NIC clock and System clock are synchronized |
| System Clock → CAP Clock | iSysSync | 0 - System clock and FPGA Clock are not synchronized 1 - System clock and FPGA Clock are synchornized |