more standards. It is possible
to list all the supported standards using <code>-list_standards all</code>.
</p>
<p>The time base for the timestamps is 1 microsecond. Depending on the kernel
version and configuration, the timestamps may be derived from the real time
clock (origin at the Unix Epoch) or the monotonic clock (origin usually at
boot time, unaffected by NTP or manual changes to the clock). The
&lsquo;<samp>-timestamps abs</samp>&rsquo; or &lsquo;<samp>-ts abs</samp>&rsquo; option can be used to fo