The NRL web service returns instrument response information from the Nominal Response Library database using the following service query methods:

/catalog

Returns information about types, manufacturers, models and configuration parameters of instruments whose responses are available in the nrl web service.

• Output formats:
  • xml (XML .xml)
  • json (JSON .json)
  • text (plain text .txt)

Alternatively, you can browse NRL contents using the new NRL web page.

/combine

Returns fully formed instrument responses in FDSN StationXML, RESP, or StationXML-Response formats. It can also return a full version of the Library for local use, similar to that used by the original Nominal Response Library. Differences in convention used by the nrl web service to describe responses using RESP files are detailed in the document Nominal Response Library Versions.

• Output formats:
  • stationxml or stationxml.zip (StationXML as .xml or .zip archive)
  • stationxml-resp or stationxml-resp.zip (StationXML-Response as .xml or .zip archive)
  • resp or resp.zip (RESP as plain text or .zip archive)

/prefix-lookup

Returns a prefix table of instrument configuration prefixes with their names and associated logic tree questions.

• Output formats:
  • xml (XML .xml)
  • json (JSON .json)
  • text (plain text .txt)