Seismometer
Real-time 4.5 Hz Seismometer Viewer
Recent Alaska earthquakes
~ Alaska Earthquake Information Center
Below: North Korea nuclear test on 3 September 2017 as recorded at Anchorage, Alaska USA using the Infiltec heliocorder.
Below: North Korea nuclear test on 3 September 2017 as recorded at Anchorage, Alaska USA using the Infiltec heliocorder.
Below: North Korea nuclear test on 3 September 2017 as recorded at Anchorage, Alaska USA using the RaspberryShake seismometer.
Infiltec Seismometers QM-4.5 basic characteristics:
-
Input amplifier: Analog Devices AD8628A
-
Filter: Maxim MAX7401CPA, lowpass Bessel
-
Mixed signal microprocessor: Microchip PIC14000
-
Analog-digital converter: 16-bit
-
Sample rate: Adjustable in steps 6 to 33 Hz
-
Interface: EIA-232 (9600 b/s, 8N1)
-
Power: Nominal 12 Vdc at approximately 10 mA
-
Dimensions: 121 mm long x 66 mm wide x 36 mm high
-
Sensor:
-
Manufacturer: Mark Products 4.5 Hz geophone, model L15B (see specifications below)
-
Frequency range: 4.5 to 10 Hz
-
Orientation: Vertical (Z-component)
-
Location: Collocated with electronics
-
Software: AmaSeis v3.2
Photo above shows the QM4.5. The circuit board is at top and the geophone is at center. The power and serial port connections are at right. The photo below shows a magnified AD8628A amplifier.
L15B geophone specifications:
Infiltec Seismometers QM-1.0 basic characteristics:
-
Input amplifier: Analog Devices AD8628A
-
Filter: Maxim MAX7401CPA, lowpass Bessel
-
Mixed signal microprocessor: Microchip PIC14000
-
Analog-digital converter: 16-bit
-
Sample rate: Adjustable in steps 6 to 33 Hz
-
Interface: EIA-232 (9600 b/s, 8N1)
-
Power: Nominal 12 Vdc at approximately 10 mA
-
Dimensions: 121 mm long x 66 mm wide x 36 mm high
-
Sensor:
-
Manufacturer: TBD
-
Frequency range: TBD
-
Orientation: TBD
-
Location: TBD
-
Software: AmaSeis v3.2
Links:
