<xs:simpleType name="FrequencyUom">
  <xs:restriction base="eml:UomEnum">
    <xs:enumeration value="cHz">
      <xs:annotation>
        <xs:documentation>centihertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="dHz">
      <xs:annotation>
        <xs:documentation>decihertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="EHz">
      <xs:annotation>
        <xs:documentation>exahertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="fHz">
      <xs:annotation>
        <xs:documentation>femtohertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="GHz">
      <xs:annotation>
        <xs:documentation>gigahertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Hz">
      <xs:annotation>
        <xs:documentation>hertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="kHz">
      <xs:annotation>
        <xs:documentation>kilohertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mHz">
      <xs:annotation>
        <xs:documentation>millihertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="MHz">
      <xs:annotation>
        <xs:documentation>megahertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="nHz">
      <xs:annotation>
        <xs:documentation>nanohertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="pHz">
      <xs:annotation>
        <xs:documentation>picohertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="THz">
      <xs:annotation>
        <xs:documentation>terahertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="uHz">
      <xs:annotation>
        <xs:documentation>microhertz</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>