Continuous spike

#1

There is a continuous spike at round about 35 hertz in all the data. Can you tell me what could be the problem?

#2

Good morning.

What stationID?

Yours, branden

#3

It is being used without the data forwarding feature. So probably you can not see the data online.

#4

OK, this looks like a tone that is inherent to the digitizer. That is to say that it is not cultural/ environmental.

It also does not look like there is a sensor attached.

branden

#5

So what is the solution to this problem?

#6

It is intrinsic to the digitizer. There is no solution. It is very low amplitude. It will be masked by actual cultural/ seismic background noise in most places where the Shake is installed.

branden

#7

Hi Shakeel, are you asking about your station R1983 or a different station?

Ian

#8

It’s a different station and it’s not online.

#9

Ok. From the screenshot you posted, I agree with Branden’s assessment that it does not look like there is a geophone instrument attached to the board. Did you assemble the Shake yourself?

#10

Yes, I did assemble both the the boards myself. I will again look for the connections, if there is any problem.

Regards,
Shakeel

#11

Ok. I would check the soldering on the geophone leads especially, sometimes there’s not enough contact to provide good connection.