optional leveling cradle, which corrects an uneven installation surface by up to ±9º. See
"Leveling Cradle and Spike Kit" on page96 for more information.
The Trillium Compact has an integrated Web server that is accessible using a standard Web
browser and the RS-232 serial interface available on the connector. A desktop computer with a
serial port configured with serial-over-Internet-Protocol (SLIP) can be used to browse into the
Trillium Compact and configure optional features, check factory information or state-of-
health, and update firmware. Current generation Nanometrics digitizers support this interface
so users can access the Web-based features of the Trillium Compact remotely, even with the
unit in service.
The symmetric triaxial arrangement of the sensing elements ensures uniformity between
vertical and horizontal outputs. The ability to remotely select either the raw (UVW) or resulting
horizontal-vertical (XYZ) outputs allows for the calibration of each axis separately. For some
studies, it may be preferable to use UVW mode instead of XYZ mode for recording seismic
data.
Trillium Compact is available in several variants to facilitate vault, surface, or buried downhole
deployments:
Model TC120-SV1 A surface vault seismometer in an aluminum enclosure with a
l 14-pin MIL-C-26482 Series I connector
l bandwidth of -3 dB points at 120 s and 108 Hz
Model TC20-SV1 A surface vault seismometer in an aluminum enclosure with a
l 14-pin MIL-C-26482 Series I connector
l bandwidth of -3 dB points at 20 s and 108 Hz
Model TC120-PH2 A posthole seismometer in a submersible stainless steel enclosure that
l has a 16-pin marine-class connector
l is suitable to a depth of 300 m
l has a bandwidth of -3 dB points at 120 s and 108 Hz
Model TC20-PH2 A posthole seismometer in a submersible stainless steel enclosure that
l has a 16-pin marine-class connector
l is suitable to a depth of 300 m
l has a bandwidth of -3 dB points at 20 s and 108 Hz
Chapter 1 - Getting Started
16889R10 • 2020-11-12 Page 10
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