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

CMG-6TC Setting up the CMG-6TC
2. Align the instrument along the North/South axis using the
indicators engraved on the top cover or the optional alignment
tool (an extended pointer which locates into the two recesses in
the top cover).
3. For best results, level the instrument using the adjustable feet
and bubble level. The instrument can stand unsupported and
function on a surface tilted by up to 10°. If buried, the
instrument will still function with a tilt of up to 20° but the quality
of the output signals will be compromised.
4. Lock the adjustable feet in position using the knurled brass
locking nuts. The feet are locked when the knurled nuts are tight
against the base of the instrument.
5. Install the thermal jacket to protect against temperature
fluctuations.
6. Referring to the instrument pin-outs in Appendix A on page 13:
a. Connect the instrument to suitable digitiser, such as a CMG-
CD24 or CMG-DM24.
b. Connect the instrument to a 9-36 VDC power supply.
7. Allow a few seconds for the instrument's processor to boot
8. The instrument is now operational and transmitting data.
9. Allow 4 minutes for the instrument to auto-centre.
Note: Güralp systems can supply breakout boxes,
cables, digitisers and software for data conversion and
analysis.
Note: If you are using a Güralp Systems digitiser, refer
to the digitiser manual for details on how to set up the
digitiser to receive data.
10. If installed in a hole, the instrument can be sealed in a plastic
bag (to keep it clean) prior to infilling.
11. After installation, the instrument and mounting surface will slowly
adjust to the local temperature, and settle in their positions. This
typically takes around four hours from the time installation is
completed.
MAN-060-0005 6 Issue C - February 2015