@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . skos:member . skos:related . skos:related . skos:narrower . skos:related . skos:related . skos:related . skos:altLabel "Trimble 4000DL GPS" , "Trimble 4000DL GPS"@en ; skos:broader ; skos:definition "A differential GPS receiver used on research vessels during the 1990s and early 2000s. Cruise literature reports that this instrument used an 8-channel receiver. Maximum sampling rate is recorded as approximately 1 Hz."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL0391" ; skos:note "accepted"@en ; skos:prefLabel "Trimble 4000DL Global Positioning System receiver"@en ; skos:related , , . skos:related . skos:narrower .