SAC Command Reference Manual

INSTRUMENT DETAILS IN TRANSFER

INSTRUMENT TYPES AND THEIR DEFINITIONS

Type Definition
ACC Acceleration
DSS LLNL Digital Seismic System
DWWSSN Digital World Wide Standard Seismograph Station
ELMAG Electromagnetic
GENERAL General seismometer
GSREF USGS Refraction
IW EYEOMG-spectral differentiation
S750 S750 Seismometer
LLL LLL broadband analog seismometer
LLSN LLSN L-4 seismometer
LNN Livermore NTS Network instrument
NORESS NORESS (NRSA)
NORESSHF NORESS high frequency element
POLEZERO Instrument specification in terms of poles and zeros
PORTABLE Portable seismometer with PDR2
RSTN Regional Seismic Test Network
REFTEK Reftek 97-01 portable instrument
SANDIA Sandia system 23 instrument
SANDIA3 Sandia new system with SL-210
SRO Sesimic Research Observatory
VEL Velocity Spectal Operator
WA Wood-Anderson
WIECH Wiechert seismometer
WWSP WWSSN short period
NONE No instrument

References to the Blacknest specifications for various instrument types were removed from the documentation in version 10.6e and are no longer supported, although these instruments still remain in the SAC program.

INSTRUMENTS WHICH REQUIRE SUBTYPES

Instrument Subtype
LLL LV, LR, LT, MV, MR, MT, EV, ER, ET, KV, KR, KT, BB (station and component abbreviation, or broadband)
LNN BB, HF (broadband or high frequency)
NORESS LP, IP, SP (long-, intermediate- or short-period)
POLEZERO file (file describing poles and zeroes)
RSTN [CP, ON, NT, NY, SD][KL, KM, KS, 7S][Z, N, E] (station; KS36000 long-, medium- or short-period, or S750 short-period; component)
SANDIA [N, O][T, L, B, D, N, E][V, R, T] (new or old acquisition system; station abbreviation; component)
SRO BB, SP, LP (broadband, short or long period)

INSTRUMENTS WHICH REQUIRE OTHER OPTIONS

Instrument Options
ELMAG
  • FREEPERIOD v where v = one of 15.0,30.0
  • MAGNIFICATION n where n = one of 375,750,1500,3000,6000
GENERAL
  • FREEPERIOD v
  • DAMPING v
LLL
  • SUBTYPE BB
  • DAMPING v
  • FREEPERIOD v
REFTEK
  • FREEPERIOD v
  • DAMPING v
  • CORNER v
  • HIGHPASS v