Spectra Precision SP90m, Руководство пользователя

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(18) Depending on baselines, precise ephemeris and long occupations up to
24 hrs may be required to achieve the high precision static specifications.
(19) A Recording Interval of 0.05 is based on a 20 Hz output. The default
changes to 0.02 if the optional 50 Hz output firmware option is installed.
(20) Embedded NTRIP Caster is available as firmware option.
(21) Depends on whether the internal battery is used or not:
- With internal battery being charged: +45°C (+113°F) max.
- With internal battery being discharged: +60°C (+140°F)
- Without internal battery (external power supply): +65°C (+149°F)
under conditions of installation.
At very high temperature, the UHF module should not be used in transmitter
mode. With the UHF transmitter on radiating 2W of RF power, the operating
temperature is limited to +55°C (+131°F).
(22) At this temperature, hand protection may be needed to safely handle the
system’s lower aluminum housing (as per EN60945).
(23) Without battery. Battery can be stored up to +70°C (+158°F).
NOTE: All performance values are given assuming a minimum of five
satellites are used, and following the procedures recommended in the
user guide. High multipath areas, high PDOP values and periods of severe
atmospheric conditions may degrade performance.