{% if event_signal.measurement is defined and event_signal.measurement is not none %}
  <{{ event_signal.measurement.ns }}:{{ event_signal.measurement.name }} xmlns:scale="http://docs.oasis-open.org/ns/emix/2011/06/siscale" xmlns:power="http://docs.oasis-open.org/ns/emix/2011/06/power" >
    <{{ event_signal.measurement.ns }}:itemDescription>{{ event_signal.measurement.description }}</{{ event_signal.measurement.ns }}:itemDescription>
    <{{ event_signal.measurement.ns }}:itemUnits>{{ event_signal.measurement.unit }}</{{ event_signal.measurement.ns }}:itemUnits>
    {% if event_signal.measurement.pulse_factor %}<oadr:pulseFactor>{{ event_signal.measurement.pulse_factor }}</oadr:pulseFactor>{% else %}
    <scale:siScaleCode>{{ event_signal.measurement.scale }}</scale:siScaleCode>
    {% endif %}
    {% if event_signal.measurement.power_attributes %}
    <power:powerAttributes>
      <power:hertz>{{ event_signal.measurement.power_attributes.hertz }}</power:hertz>
      <power:voltage>{{ event_signal.measurement.power_attributes.voltage }}</power:voltage>
      <power:ac>{{ event_signal.measurement.power_attributes.ac|booleanformat }}</power:ac>
    </power:powerAttributes>
    {% endif %}
  </{{ event_signal.measurement.ns }}:{{ event_signal.measurement.name }}>
  {% endif %}