Guralp Systems Limited
MAN-MIN-0001 - Güralp Minimus - Technical Manual

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1. Preliminary Notes 2. System Overview 3. System description 4. Getting started 5. Advanced system configuration 6. GüVü app 7. Advanced troubleshooting 8. Appendix 1 – Instrument/channel names 9. Appendix 2 – Minimus network ports 10. Appendix 3 – Connector pin‑outs 11. Appendix 4 – Dimensions and drawings 12. Appendix 5 – Güralp Discovery installation 13. I.P. address configuration on PC or Laptop 14. Revision History

Section Index: 8.1. Minimus' internal sensors 8.2. Analogue Instruments 8.3. Digital Instruments

Chapter 8. Appendix 1 – Instrument/channel names

The tables in this section show the names and codes of the streamed channels along with the record names and channel codes for recorded data. The first character “x” in miniSEED channel code represents the sample rate. The possible values are shown in the table below:

F

≥ 1000 Hz to < 5000 Hz

C

≥ 250 Hz to < 1000 Hz

H

≥ 80 Hz to < 250 Hz

B

≥ 10 Hz to < 80 Hz

M

> 1 to < 10

L

≈ 1

The “Data record names” of the seismic channels and MEMS accelerometer channels are postfixed with “A” or “B”. This notation distinguishes between the two different sample rates that is possible to select for each recorded channel. For example, the recorded streams Sensor0AccelZRoughA and Sensor0AccelZRoughB carry digitisations of the same signal, differing only in the sample rate.

Note: Throughout this section, the letter n in italic script is used to indicate the Instrument number, which is a small integer used to identify the signal source. This is always zero ('0') for the Minimus' own internal sensors and for the first analogue instrument.

For Minimus units, Instruments 1, 2, … 8 are external Radian instruments in a string sharing a digital connection. Instrument 1 is the digital instrument closest to the Minimus.

 For Minimus+ units, Instrument 1 is the second analogue sensor. Instruments 2, 3, … 9 are external Radian instruments in a string sharing a digital connection. Instrument 2 is the digital instrument closest to the Minimus+.

8.1 Minimus' internal sensors

Sensor

Comp.

Data streaming

Data recording

Digital filter mode

Live stream name

Live Stream code

Data record name

Mini
SEED
channel code

MEMS accelerometer

1

Acausal

Sensor0AccelZRough

0AXL10

Sensor0AccelZRoughA

xN1

Sensor0AccelZRoughB

xN1

Causal

Sensor0AccelZLowLat

0AXL1C

xN1

2

Acausal

Sensor0AccelNRough

0AXL20

Sensor0AccelNRoughA

xN2

Sensor0AccelNRoughB

xN2

Causal

Sensor0AccelNLowLat

0AXL2C

xN2

3

Acausal

Sensor0AccelERough

0AXL30

Sensor0AccelERoughA

xN3

Sensor0AccelERoughB

xN3

Causal

Sensor0AccelELowLat

0AXL3C

xN3

MEMS magnetometer

1

Acausal

Sensor0MagnetZRough

0MAG10

Sensor0MagnetZRough

xF1

2

Acausal

Sensor0MagnetNRough

0MAG20

Sensor0MagnetNRough

xF2

3

Acausal

Sensor0MagnetERough

0MAG30

Sensor0MagnetERough

xF3

Long-term average for Z, Y and X MEMS channels

1

Acausal

Sensor0XLTAvgZLowLat

0LTX10

2

Acausal

Sensor0XLTAvgNLowLat

0LTX20

3

Acausal

Sensor0XLTAvgELowLat

0LTX30

Short-term average for Z, Y and X MEMS channels

1

Acausal

Sensor0XSTAvgZLowLat

0STX10

2

Acausal

Sensor0XSTAvgNLowLat

0STX20

3

Acausal

Sensor0XSTAvgELowLat

0STX30

Short/long-term average ratio for Z, Y and X MEMS channels

1

Acausal

Sensor0XSLatZLowLat

0SLX10

2

Acausal

Sensor0XSLatNLowLat

0SLX20

3

Acausal

Sensor0XSLatELowLat

0SLX30

Voltage

Acausal

Sensor0VoltageRough

0VINP0

Sensor0VoltageRough

xYV

Humidity

Acausal

Sensor0HumidARough

0HUMA0

Sensor0HumidARough

xIO

Temperature

Precision temperature

Acausal

Sensor0TemprARough

0TMPA0

Sensor0TemprARough

xKO

First derivative of temperature

Acausal

Sensor0TemprDRough

0TMPD0

xKD

Internal Clock

Internal clock offset from GNSS

Acausal

ClkGpsOffsetRough

0CGPSO

ClkGpsOffsetRough

xEO

Clock GNSS period rough

Acausal

ClkGpsPeriodRough

0CGPSP

ClkGpsPeriodRough

xEF

Internal clock DAC frequency pulling

Acausal

ClkDacFreqPullRough

0CVDAC

ClkDacFreqPullRough

xED

Test internal clock drift

Acausal

ClkTestPbpSRough

0CTSTB

ClkTestPpbSRough

xEB

Internal clock offset from PTP

Acausal

ClkPtpOffsetRough

0CPTPO

ClkPtpOffsetRough

xEP

Delay MS

Acausal

ClkPtpDelayMSRough

0CPDMS

ClkPtpDelayMSRough

xEA

Delay SM

Acausal

ClkPtpDelaySMRough

0CPDSM

ClkPtpDelaySMRough

xEB

Mean path delay

Acausal

ClkPtpMeanPathDelay

0CPMPD

ClkPtpMeanPathDelay

xEC

8.2 Analogue Instruments

The italicised n in the codes is always set to zero ('0') for the first analogue instrument.  For Minimus+ units, it is set to 1 for the second analogue sensor. There is an Auxiliary input on each of the analogue sensor inputs on a Minimus+ and the streams from these are similarly identified by a 0 or 1.

Sensor

Comp.

Data streaming

Data recording

Digital filter mode

Live stream name

Live Stream code

Data record name

Mini
SEED
channel code

Analogue seismic sensor

(velocimeter or accelerometer)

Vertical

Acausal

SensornSeismoZSmooth

nVELZ0

or

nACCZ0

SensornSeismoZSmoothA

xHZ

or

xNZ

SensornSeismoZSmooth

nVELZ2

or

nACCZ2

SensornSeismoZSmoothB

xHZ

or

xNZ

Causal

SensornSeismoZLowLat

nVELZC

or

nACCZC

SensornSeismoZLowLat

xHN

or

xNN

North

Acausal

SensornSeismoNSmooth

nVELN0

or

nACCN0

SensornSeismoNSmoothA

xHN

or

xNN

SensornSeismoNSmooth

nVELN2

or

nACCN2

SensornSeismoNSmoothB

xHN

or

xNN

Causal

SensornSeismoNLowLat

nVELNC

or

nACCNC

SensornSeismoNLowLat

xHN

or

xNN

East

Acausal

SensornSeismoESmooth

nVELE0

or

nACCE0

SensornSeismoESmoothA

xHE

or

xNE

SensornSeismoESmooth

nVELE2

or

nACCE2

SensornSeismoESmoothB

xHE

or

xNE

Causal

SensornSeismoELowLat

nVELEC

or

nACCEC

SensornSeismoELowLat

xHE

or

xNE

Auxiliary input

Acausal

SensornSeismoXSmooth

nAUXX0

SensornSeismoXSmooth

xDF

Analogue seismic sensor mass positions

Vertical

Acausal

SensornIntZRough

nVELM8

or

nACCM8

SensornIntZRough

xYZ

North

Acausal

SensornIntNRough

nVELM9

or

nACCM9

SensornIntNRough

xYN

East

Acausal

SensornIntERough

nVELMA

or

nACCMA

SensornIntERough

xYE

Sensor

Comp.

Data streaming

Data recording

Long-term average for Z, N and E seismic channels

Vertical

Acausal

SensornLTAvgZLowLat

nLTAZ0

North

Acausal

SensornLTAvgNLowLat

nLTAN0

East

Acausal

SensornLTAvgELowLat

nLTAE0

Short-term average for Z, N and E seismic channels

Vertical

Acausal

SensornSTAvgZLowLat

nSTAZ0

North

Acausal

SensornSTAvgNLowLat

nSTAN0

East

Acausal

SensornSTAvgELowLat

nSTAE0

Short/long-term average ratio for Z, N and E seismic channels

Vertical

Acausal

SensornSLRatZLowLat

nSLRZ0

North

Acausal

SensornSLRatNLowLat

nSLRN0

East

Acausal

SensornSLRatELowLat

nSLRE0

8.3 Digital Instruments

Digital instruments can be attached to the Minimus in a chain. The lowest number instrument is the one which is closest to the Minimus. One a Minimus, this is Instrument 1.  For Minimus+ units, it is Instrument 2.

Sensor

Comp.

Data streaming

Data recording

Digital filter mode

Live stream name

Live Stream code

Data record

name

MiniSEEDchannel code

Seismometer (velocity or acceleration response)

Vertical

Acausal

SensornSeismoZSmooth

nVELZ0

or

nACCZ0

SensornSeismoZSmoothA

xHZ

or

xNZ

SensornSeismoZSmooth

nVELZ2

or

nACCZ2

SensornSeismoZSmoothB

xHZ

or

xNZ

Causal

SensornSeismoZLowLat

nVELZC

or

nACCZC

SensornSeismoZLowLat

xHZ

or

xNZ

North

Acausal

SensornSeismoNSmooth

nVELN0

or

nACCN0

SensornSeismoNSmoothA

xHN

or

xNN

SensornSeismoNSmooth

nVELN2

or

nACCN2

SensornSeismoNSmoothB

xHN

or

xNN

Causal

SensornSeismoNLowLat

nVELNC

or

nACCNC

SensornSeismoNLowLat

xHN

or

xNN

East

Acausal

SensornSeismoESmooth

nVELE0

or

nACCE0

SensornSeismoESmoothA

xHE

or

xNE

SensornSeismoESmooth

nVELE2

or

nACCE2

SensornSeismoESmoothB

xHE

or

xNE

Causal

SensornSeismoELowLat

nVELEC

or

nACCEC

SensornSeismoELowLat

xHE

or

xNE

Digital seismic sensor mass position

Vertical

Acausal

SensornIntZRough

nINTZ0

SensornIntZRough

xYZ

North

Acausal

SensornIntNRough

nINTN0

SensornIntNRough

xYN

East

Acausal

SensornIntERough

nINTE0

SensornIntERough

xYE

MEMS accelerometer

Vertical

Acausal

SensornAccelZRough

nAXLZ0

SensornAccelZRoughA

xNZ

SensornAccelZRoughB

xNZ

Causal

SensornAccelZLowLat

nAXLZC

xNZ

North

Acausal

SensornAccelNRough

nAXLN0

SensornAccelNRoughA

xNN

SensornAccelNRoughB

xNN

Causal

SensornAccelNLowLat

nAXLNC

xNN

East

Acausal

SensornAccelERough

nAXLE0

SensornAccelERoughA

xNE

SensornAccelERoughB

xNE

Causal

SensornAccelELowLat

nAXLEC

xNE

MEMS

magnetometer

Z

Acausal

SensornMagnetZRough

nMAGZ0

SensornMagnetZRough

xFZ

N

Acausal

SensornMagnetNRough

nMAGN0

SensornMagnetNRough

xFN

E

Acausal

SensornMagnetERough

nMAGE0

SensornMagnetERough

xFE

Yaw

Acausal

SensornRotYawRough

nROTY0

SensornRotYawRough

xYY

Pitch

Acausal

SensornRotPtchRough

nROTP0

SensornRotPtchRough

xYP

Roll

Acausal

SensornRotRollRough

nROTR0

SensornRotRollRough

xYR

Long-term average for Z, N and E seismic channels

Vertical

Acausal

SensornLTAvgZLowLat

nLTAZ0

North

Acausal

SensornLTAvgNLowLat

nLTAN0

East

Acausal

SensornLTAvgELowLat

nLTAE0

Long-term average for Z, N and E MEMS channels

Vertical

Acausal

SensornXLTAvgZLowLat

nLTXZ0

North

Acausal

SensornXLTAvgNLowLat

nLTXN0

East

Acausal

SensornXLTAvgELowLat

nLTXE0

Sensor

Comp.

Data streaming

Data recording

Short-term average for Z, N and E seismic channels

Vertical

Acausal

SensornSTAvgZLowLat

nSTAZ0

North

Acausal

SensornSTAvgNLowLat

nSTAN0

East

Acausal

SensornSTAvgELowLat

nSTAE0

Short-term average for Z, N and E MEMS channels

Vertical

Acausal

SensornXSTAvgZLowLat

nSTXZ0

North

Acausal

SensornXSTAvgNLowLat

nSTXN0

East

Acausal

SensornXSTAvgELowLat

nSTXE0

Short/long-term average ratio for Z, N and E seismic channels

Vertical

Acausal

SensornSLRatZLowLat

nSLRZ0

North

Acausal

SensornSLRatNLowLat

nSLRN0

East

Acausal

SensornSLRatELowLat

nSLRE0

Short/long-term average ratio for Z, N and E MEMS channels

Vertical

Acausal

SensornXSLatZLowLat

nSLXZ0

North

Acausal

SensornXSLatNLowLat

nSLXN0

East

Acausal

SensornXSTatELowLat

nSLXE0

Temperature

Acausal

SensornTemprBRough

nTMPB0

SensornTemprBRough

xKO

PreviousNext

1. Preliminary Notes 2. System Overview 3. System description 4. Getting started 5. Advanced system configuration 6. GüVü app 7. Advanced troubleshooting 8. Appendix 1 – Instrument/channel names 9. Appendix 2 – Minimus network ports 10. Appendix 3 – Connector pin‑outs 11. Appendix 4 – Dimensions and drawings 12. Appendix 5 – Güralp Discovery installation 13. I.P. address configuration on PC or Laptop 14. Revision History