General Timing Management; Presets; Wr Slave @ Wr0 (Bc) [Default]; External Atomic Clock (Gm) - Safran WR-Z16 User Manual

5.2

General Timing Management

To ease the configuration of the device the WRZ-OS implements presets to allow
a quick setup of the timing sources and of the master ports to redistribute time.
5.2.1

Presets

Preset configuration is found in the Web GUI under Configuration > Timing Gen-
eral > Preset.
5.2.1.1

WR Slave @ wr0 (BC) [default]

Web GUI selection: BC: wr0 | WR
This is the default preset as it is the standard/legacy configuration of most of the
WR devices. This is the simplest Boundary Clock behavior where the device is dis-
ciplined by a single reference and forwards its timing to the down layers through
all the other ports.
5.2.1.2

External Atomic Clock (GM)

Web GUI selection: GM: ext AC
It is recommended to use this preset when the device is configured to be the
Grand-Master in the timing network and is disciplined using an Atomic Clock as
external reference.
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5 WR-Z16 User Manual Rev. v5.0
Note:
If the device has been shipped with the holdover option, this
timing source will be, by default, configured as the last timing source
independently of the preset.
The primary timing source is provided using WR protocol through interface
wr0.
The other (wr1) is configured as WR master.
The primary timing source is provided using an external atomic clock ref-
erence through the front-panel 10 MHz and 1PPS inputs (Grand-Master).
All timing ports (i.e., wr0-wr15) are configured as WR masters.
Clock accuracy is announced below or equal to 25 nanoseconds.
Alignment of PPS_in VS PPS_out must be done manually (within pico-
seconds)
PPS only needed at startup
5.2 General Timing Management
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