The nrl web service returns instrument response information from the current Nominal Response Library (NRL) 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.

• 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)