MEDUSA:: Tabella dei Fattori di Conversione

DAS (Data Acquisition Systems) Conversion Factors
DATA ACQUISITION SYSTEMS	VOLTAGE CONVERSION FACTORS (µV/count)
DATA ACQUISITION SYSTEMS	Buoy name →	CFB1	CFB2	CFB3	CFSB
Kinemetrics Quanterra Q330 - six channels @ Gain = 1 (0dB)	Serial Number (S/N)	2576	5367	5364	n/a
Kinemetrics Quanterra Q330 - six channels @ Gain = 1 (0dB)	All channels (nominal)	2.387
Guralp DM-24 - four channels @ Gain = 1 (0dB)	Identification Device (ID)	14713	14713	14713	n/a
	Serial Number (S/N)	A6613	A6611	A6612	A2539
	Z-axis	3.220	3.208	3.225	2.869
	N/S-axis	3.223	3.22	3.22	2.868
	E/W-axis	3.213	3.219	3.215	2.870

Sensors Transduction Factors
SENSORS	VOLTAGE RESPONSE SENSITIVITY (µV/count, nominal - overall frequency response band)
SENSORS	Buoy Name →	CFB1	CFB2	CFB3	CFSB
MEMS triaxial accelerometer - Colibrys SiFlex SF3600.A	Z-axis [ V/g ]	1.21	1.26	1.23	1.20
	N/S-axis [ V/g ]	1.21	1.24	1.22	1.20
	E/W-axis [ V/g ]	1.20	1.24	1.20	1.20
Nanometrics TRILLIUM - Compact OBS 120s	All three components [ V/(m/s) ] @ 1Hz	749.1
Hydrophone - HTI-04-PCA/ULF	RECEIVING VOLTAGE SENSITIVITY (nominal - overall frequency response band [100s-500Hz], @8kHz) -3dB @ 120Hz
	[ dB re 1V/µPa ]	-168.4	-168.2	-168.4	n/a
	[ V/µPa ]	3.8E-09	3.9E-09	3.8E-09	n/a
	[ V/bar ]	380.2	389.0	380.2	n/a
	[ V/mbar ]	0.38	0.39	0.38	n/a

DAS with attached Sensor Conversion Factors
DAS + SENSOR	CONVERSION FACTORS (corresponding units/count)
DAS + SENSOR	Buoy name →	CFB1	CFB2	CFB3	CFSB
Q330 + TRILLIUM 120s velocimeter	All components [ (m/s)/count ]	3.2E-09			n/a
Q330 + HTI hydrophone	[ mbar/count ]	6.28E-06	6.14E-06	6.28E-06	n/a
DM24 + MEMS SF 3600 accelerometer	Z-axis [ (m/s²)/count ]	2.60E-05	2.49E-05	2.56E-05	n/a
	Y-axis (N/S) [ (m/s²)/count ]	2.61E-05	2.54E-05	2.58E-05	n/a
	X-axis (E/W) [ (m/s²)/count ]	2.62E-05	2.54E-05	2.62E-05	n/a
	g value applied = 9.782 m/s²

MiniSEED Channel names and Sample Frequencies
Buoy/Submarine Module name →	CFB1	CFB2	CFB3	CFSB
DAS-1 type	Q330	Q330	Q330	Q330
DAS-1 sensors attached:	Trillium OBS BB 120s Channels: HHZ - HHB - HHC (Sample frequency: 100 sps)
DAS-1 sensors attached:	HTI Low-Frequency Hydrophone Channel: HD1 (Sample frequency: 200sps)
DAS-2 type	DM-24	DM-24	DM-24	DM-24
DAS-2 sensor attached:	MEMS SF 3600 Accelerometer Channels: HNZ - HNB - HNC (Sample frequency: 200 sps)

Buoy GNSS Receivers information
GNSS Buoy name →	CFBA	CFBB	CFBC	CFSB
GPS - Leica GR10 (S/N)	Ric. 1703131 - Ant. 16342068	Ric. 1703137 - Ant. 16342071	Ric. 1703150 - Ant. 16342077	Ric. 1703155 - Ant. 16342072

Document revisions
Version	Date	Author	Note

1.0	28-03-2017	SG	Table creation (Excel spreadsheet)
1.1	16-07-2017	SG	Data validation (first issue)
1.2	17-07-2017	SG	Data verification (first issue)
1.3	18-07-2017	SG	Added GILDA DAS, CUMAS coordinates and corrected Pressure Unit Conversion
1.4	16-10-2017	SG	ricalcolato fattore Q330 + TRILLIUM 120s velocimeter (fact_new = fact / 10)
2.0	22-03-2025	SG	Table design for Web