Frequently Asked Questions
Announcement: GeoSIG Cyber Security Recommendations
FAQ Maintenance Guideline from GeoDAS
FAQ Maintenance Guideline from Webinterface
FAQ Maintenance Guideline from Recorder Serial Console
FAQ How to Ping an IP Address from Windows
FAQ How to Ping a Windows Computer from Recorder Serial Console
FAQ How to Copy Data From SD Card
FAQ uCon How to enable longterm logging
Find more answers related to your GMS series instrument here
Find more answers related to your CR series instruments here
FAQ fora How to Connect Serial Console with uCon
Various questions to fora instruments:
What does optional sampling rate of 5000sps mean?
When we say "Sampling rate up to 2000sps - later optionally 5000sps", the 5000sps means it will be optionally available by choosing nair module.
How many ADC boards are there?
Up to 12 ADC boards, each with 3 channels (12x3=36 totally)
What does high performance CPU mean specifically?
4x Arm Cortex™-A9 Quad-Core, 800Mhz, 2GB RAM DDR
What is an embedded smart battery charger?
It monitors the battery charging level to preserve the battery lifetime, over-voltage and under-voltage protection
What are the parameters for LCD display on the front of the rack panel?
It's a summary of the SOH, time, time source, last event, free memory, errors, input voltage and battery, PGA in case of an event, relay status...
Is it possible to have a different sps for event and data stream? (e.g. 2kHz for event & 100Hz for data stream)
Yes, this is possible.
How many receiving IP address at most?
4 servers can be set, 4 data-streams with seedlink, 1 stream per port with GSBU but any amount of ports can be configured.
Find more answers related to your Accessories here
Find more answers related to your Sensors here
Find more answers related to GeoDAS here
How to evaluate the noise performance of a unit?
How to calculate the resolution of a unit?
Resolution is expressed in bits in 2 variants in units of [Bit]:
Noise free / Peak-Peak (PP):
Effective / Root Mean Square (RMS):
Fullscale and Noise could be expressed in counts, volts, g, mm/s, etc.
For example for a ±2 g sensor the Fullscale is 2 g.
How to calculate the dynamic range of a unit?
Dynamic range is expressed in bits in 2 variants in units of [dB]:
Noise free / Peak-Peak (PP):
Effective / Root Mean Square (RMS):
Fullscale and Noise could be expressed in counts, volts, g, mm/s, etc.
For example for a ±2 g sensor the Fullscale is 2 g.
How to convert Bit (resolution) to dB (dynamic range)?
ref: Werner, M.,"Nachrichtentechnik / eine Einführung für alle Studiengänge", Vieweg + Teubner, 2009
How to send an instrument or sensor back to us (RMA)
What is a freefield strong motion station?
A free-field strong-motion station for a subject area is intended to measure ground motions that can represent the reference motion not contaminated by any man-made / natural random noise or by structural response or soil-structure interaction.
Here are general guidelines for the selection and or establishment of such a station:
- A foundation that is well coupled with the ground and well protected from environmental effects
- Far away from roads or from any source of transient and random vibration
- Far away from any structure at a distance 3 to 4 times of any dimension of such structure
- Preferred to be on the same type of soil as the overall area under consideration
- Reasonable easy access at all times
