Guralp Systems CMG-6TD - Manual (Page 8)

CMG-6TD Introduction
2.1 State of health information
The 6TD constantly monitors the status of the GPS and timing systems,
outputting information in a plain text status stream.
An electronic thermometer also provides regular measurements of the sensor's
internal temperature, which are reported in the same stream. The
thermometer is calibrated to an accuracy up to ± 0.33 °C, with a linearity of
± 0.5 °C.
2.2 Options
2.2.1 Storage and interfaces
The 6TD can be supplied with up to 16 Gb of internal Flash memory for data
storage. The amount you need will depend on the length of your experiment
and the sampling rates used.
You can download data from the internal storage
•
over the sensor's standard RS232 data port (compatible with Scream!
and other Güralp data modules),
•
over a fast IEEE.1394 (FireWire) link with optional power,
•
using an optional “smart” case, over USB from up to five units at once
(see section 3.3 on page 14), or
•
if fitted, using the Ethernet interface to transfer data over a local area
network.
2.2.2 Sensor response
The 6TD can be supplied with a response which is flat to velocity from
100 Hertz to any of 1 Hertz, 0.1 Hertz (10 seconds), 0.033 Hertz (30 seconds)
or 0.016 Hertz (60 seconds).
If you do not require high-frequency data, a low-pass digital filter may be
installed at a frequency (below 100 Hertz) that you specify.
2.2.3 Wireless networking
The sensor can be fitted with an optional 802.11b (“Wi-Fi”) wireless interface
in addition to the Ethernet port. This option allows data flow to be
established from autonomous installations with a minimum of setting up.
MAN-T60-0002 8 Issue F - February 2014