Power Consumption Calculator / EarthData EDR-210 No. of Channels 1 2 3 4 5 6 Sampling Rate 1 2 5 10 20 50 100 200 500 1000 3000 Data Format MiniSEED ASCII integer Hard Disk [GB] Battery [Ah] Temp. [°C] 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -40 Record Span Battery Span Hard disk record capacity is calculated by help of the following estimation: MiniSEED: 2 byte/sample (seismics downto 1.2; magnetotellurics up to 3) ASCII : 6 byte/sample (magnetotellurics up to 10) integer : 4 byte/sample (correct) Battery (12 Volts; GEL or Glass Mat type) capacity calculation includes: Battery capacity versus temperature Battery self discharge is not considered.