Quick Installation Guide

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WERA4-Quick-US-200918

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7.1.28 Clock

In this field the software displays the currently configured master clock

frequency.

For systems with an older clock module the value should be set to 90.7 MHz.

All new systems operate at 90.0 MHz.

This parameter is defined by the file /home/wera/etc/WERA_Clock.asc.

If a newer 90 MHz master clock is used, this file must be existent and contain the

string 180.000000 in the first line.

If a newer 90.7 MHz master clock is used, the file should be renamed, removed or

contain a different string.

After any changes regarding this file at least one “stop” command needs to be

submitted under WeraDesk to update the web page and display the correct values for

the used clock frequency.

If the wrong master clock frequency is defined, the wrong sample rate will be

used and the measurement will be invalid. In this case the Bragg lines in the

range Doppler maps will not be vertically anymore.

7.2 WERA-Desk Status window

The Status Page reflects the actual status of the WERA system and is automatically

updated every 5 seconds (You need JavaScript for the update to work).