Thread: remove instrument response with evalresp

Started: 2008-01-24 07:40:26
Last activity: 2008-01-24 07:40:26
Topics: SAC Help
Yannik Behr
2008-01-24 07:40:26
When trying to remove the instrument response using evalresp
(sac-command: transfer from evalresp fname RESP.AU.ARMA..BHZ to vel
freqlimits 0.005882 0.006250 0.250000 0.333333) we get the following error:

EVRESP ERROR (ARMA.AU..BHZ [File: ./RESP.AU.ARMA..BHZ; Start date:
2006,340,00:00:00.0000; Stage: 5]):
parse_coeff; Unsupported filter type, IIR and Analog filters
should be represented as blockette [53] filters,
skipping to next response now
No transfer function applied!
ERROR 2118: No transfer function applied.

We found a work-around in the sac-mailing list
(http://www.iris.washington.edu/pipermail/sac-help/2006-October/000160.html)
but we neither understood the problem nor did we find a satisfying
solution. Did anyone else encounter that problem? We'd be grateful for
any support in this matter.

Thanks!
Yannik

P.S. the RESP-file which causes the problems is attached
# << IRIS SEED Reader, Release 4.5 >>
#
# ======== CHANNEL RESPONSE DATA ========
B050F03 Station: ARMA
B050F16 Network: AU
B052F03 Location: ??
B052F04 Channel: BHZ
B052F22 Start date: 2007,169,00:00:00
B052F23 End date: 2007,171,23:59:59
# =======================================
# + +--------------------------------------------+ +
# + | Response (Poles & Zeros), ARMA ch BHZ | +
# + +--------------------------------------------+ +
#
B053F03 Transfer function type: A [Laplace Transform (Rad/sec)]
B053F04 Stage sequence number: 1
B053F05 Response in units lookup: M/S - velocity in meters per second
B053F06 Response out units lookup: V - emf in volts
B053F07 A0 normalization factor: 5.71405E+08
B053F08 Normalization frequency: 0.3
B053F09 Number of zeroes: 2
B053F14 Number of poles: 5
# Complex zeroes:
# i real imag real_error imag_error
B053F10-13 0 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00
B053F10-13 1 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00
# Complex poles:
# i real imag real_error imag_error
B053F15-18 0 -7.402000E-02 7.402000E-02 0.000000E+00 0.000000E+00
B053F15-18 1 -7.402000E-02 -7.402000E-02 0.000000E+00 0.000000E+00
B053F15-18 2 -5.027000E+02 0.000000E+00 0.000000E+00 0.000000E+00
B053F15-18 3 -1.005000E+03 0.000000E+00 0.000000E+00 0.000000E+00
B053F15-18 4 -1.131000E+03 0.000000E+00 0.000000E+00 0.000000E+00
#
# + +---------------------------------------+ +
# + | Channel Gain, ARMA ch BHZ | +
# + +---------------------------------------+ +
#
B058F03 Stage sequence number: 1
B058F04 Gain: 8.084240E+02
B058F05 Frequency of gain: 3.000000E-01 HZ
B058F06 Number of calibrations: 0
#
# + +---------------------------------------+ +
# + | Channel Gain, ARMA ch BHZ | +
# + +---------------------------------------+ +
#
B058F03 Stage sequence number: 2
B058F04 Gain: 4.000000E+00
B058F05 Frequency of gain: 3.000000E-01 HZ
B058F06 Number of calibrations: 0
#
# + +-------------------------------------------+ +
# + | Response (Coefficients), ARMA ch BHZ | +
# + +-------------------------------------------+ +
#
B054F03 Transfer function type: D
B054F04 Stage sequence number: 3
B054F05 Response in units lookup: V - emf in volts
B054F06 Response out units lookup: COUNTS - digital counts
B054F07 Number of numerators: 0
B054F10 Number of denominators: 0
#
# + +------------------------------+ +
# + | Decimation, ARMA ch BHZ | +
# + +------------------------------+ +
#
B057F03 Stage sequence number: 3
B057F04 Input sample rate: 6.000000E+02
B057F05 Decimation factor: 1
B057F06 Decimation offset: 0
B057F07 Estimated delay (seconds): 0.000000E+00
B057F08 Correction applied (seconds): 0.000000E+00
#
# + +---------------------------------------+ +
# + | Channel Gain, ARMA ch BHZ | +
# + +---------------------------------------+ +
#
B058F03 Stage sequence number: 3
B058F04 Gain: 4.993800E+04
B058F05 Frequency of gain: 3.000000E-01 HZ
B058F06 Number of calibrations: 0
#
# + +-------------------------------------------+ +
# + | Response (Coefficients), ARMA ch BHZ | +
# + +-------------------------------------------+ +
#
B054F03 Transfer function type: D
B054F04 Stage sequence number: 4
B054F05 Response in units lookup: COUNTS - digital counts
B054F06 Response out units lookup: COUNTS - digital counts
B054F07 Number of numerators: 29
B054F10 Number of denominators: 0
# Numerator coefficients:
# i, coefficient, error
B054F08-09 0 -3.013550E-04 0.000000E+00
B054F08-09 1 -1.103390E-03 0.000000E+00
B054F08-09 2 -1.343540E-03 0.000000E+00
B054F08-09 3 8.525790E-04 0.000000E+00
B054F08-09 4 5.848280E-03 0.000000E+00
B054F08-09 5 9.972140E-03 0.000000E+00
B054F08-09 6 6.348320E-03 0.000000E+00
B054F08-09 7 -9.171890E-03 0.000000E+00
B054F08-09 8 -3.040360E-02 0.000000E+00
B054F08-09 9 -3.896790E-02 0.000000E+00
B054F08-09 10 -1.327990E-02 0.000000E+00
B054F08-09 11 5.515500E-02 0.000000E+00
B054F08-09 12 1.498740E-01 0.000000E+00
B054F08-09 13 2.332600E-01 0.000000E+00
B054F08-09 14 2.665230E-01 0.000000E+00
B054F08-09 15 2.332600E-01 0.000000E+00
B054F08-09 16 1.498740E-01 0.000000E+00
B054F08-09 17 5.515500E-02 0.000000E+00
B054F08-09 18 -1.327990E-02 0.000000E+00
B054F08-09 19 -3.896790E-02 0.000000E+00
B054F08-09 20 -3.040360E-02 0.000000E+00
B054F08-09 21 -9.171890E-03 0.000000E+00
B054F08-09 22 6.348320E-03 0.000000E+00
B054F08-09 23 9.972140E-03 0.000000E+00
B054F08-09 24 5.848280E-03 0.000000E+00
B054F08-09 25 8.525790E-04 0.000000E+00
B054F08-09 26 -1.343540E-03 0.000000E+00
B054F08-09 27 -1.103390E-03 0.000000E+00
B054F08-09 28 -3.013550E-04 0.000000E+00
#
# + +------------------------------+ +
# + | Decimation, ARMA ch BHZ | +
# + +------------------------------+ +
#
B057F03 Stage sequence number: 4
B057F04 Input sample rate: 6.000000E+02
B057F05 Decimation factor: 3
B057F06 Decimation offset: 0
B057F07 Estimated delay (seconds): 2.333300E-02
B057F08 Correction applied (seconds): 2.333300E-02
#
# + +---------------------------------------+ +
# + | Channel Gain, ARMA ch BHZ | +
# + +---------------------------------------+ +
#
B058F03 Stage sequence number: 4
B058F04 Gain: 1.000000E+00
B058F05 Frequency of gain: 3.000000E-01 HZ
B058F06 Number of calibrations: 0
#
# + +-------------------------------------------+ +
# + | Response (Coefficients), ARMA ch BHZ | +
# + +-------------------------------------------+ +
#
B054F03 Transfer function type: D
B054F04 Stage sequence number: 5
B054F05 Response in units lookup: COUNTS - digital counts
B054F06 Response out units lookup: COUNTS - digital counts
B054F07 Number of numerators: 5
B054F10 Number of denominators: 5
# Numerator coefficients:
# i, coefficient, error
B054F08-09 0 1.832160E-04 0.000000E+00
B054F08-09 1 7.328640E-04 0.000000E+00
B054F08-09 2 1.099300E-03 0.000000E+00
B054F08-09 3 7.328640E-04 0.000000E+00
B054F08-09 4 1.832160E-04 0.000000E+00
# Denominator coefficients:
# i, coefficient, error
B054F11-12 0 5.174780E-01 0.000000E+00
B054F11-12 1 -2.409340E+00 0.000000E+00
B054F11-12 2 4.238860E+00 0.000000E+00
B054F11-12 3 -3.344070E+00 0.000000E+00
B054F11-12 4 1.000000E+00 0.000000E+00
#
# + +------------------------------+ +
# + | Decimation, ARMA ch BHZ | +
# + +------------------------------+ +
#
B057F03 Stage sequence number: 5
B057F04 Input sample rate: 2.000000E+02
B057F05 Decimation factor: 10
B057F06 Decimation offset: 0
B057F07 Estimated delay (seconds): 1.000000E-02
B057F08 Correction applied (seconds): 1.000000E-02
#
# + +---------------------------------------+ +
# + | Channel Gain, ARMA ch BHZ | +
# + +---------------------------------------+ +
#
B058F03 Stage sequence number: 5
B058F04 Gain: 1.000000E+00
B058F05 Frequency of gain: 3.000000E-01 HZ
B058F06 Number of calibrations: 0
#
# + +---------------------------------------+ +
# + | Channel Sensitivity, ARMA ch BHZ | +
# + +---------------------------------------+ +
#
B058F03 Stage sequence number: 0
B058F04 Sensitivity: 1.614840E+08
B058F05 Frequency of sensitivity: 3.000000E-01 HZ
B058F06 Number of calibrations: 0
#

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