Channel Table file

Channel table file contains important information about channels.

Below is an example of one channel in channel table file:

6033 1 0 N.AAKH U 6 27 175.60 m/s 1.00 0.70 0 1.023e-07 36.3726 137.9203 483 0 0 Azuminoakashina

  • [1]: Hexadecimal channel number (2-byte)

  • [2]: Recording flag

  • [3]: Delay time on a circuit (ms)

  • [4]: Station code

  • [5]: Motion component code

  • [6]: Reduction ratio of monitoring waveform (expressed as the integer exponent of a power of 2)

  • [7]: Quantization bit rate in A/D conversion

  • [8]: Sensor sensitivity (V/unit of input, where unit of input is provided in column [9])

  • [9]: Unit of input. Use MKS system: “m” for displacement, “m/s” for velocity, and “m/s/s” for acceleration.

  • [10]: Natural period of the seismometer (s)

  • [11]: Damping constant of the sensor

  • [12]: Amplification factor applied to sensor output prior to A/D conversion (dB)

  • [13]: Quantization width in A/D conversion (V), a.k.a. LSB value

  • [14]: Station latitude (degrees). A positive value indicates North latitude.

  • [15]: Station longitude (degrees). A positive value indicates East longitude.

  • [16]: Station height (m)

  • [17]: Station correction for P-wave (s)

  • [18]: Station correction for S-wave (s)

  • [19]: Station name (Optional)