Sokkia GSR2700 IS, Operation Manuals, Page: 17 / 87

6 GSR2700 IS Operations Manual
Chapter 1 Introduction
1.4 Usage Cautions
CAUTION
• If your receiver has an internal radio, always ensure that the
radio antenna is properly connected to your receiver before
turning the unit on. Never disconnect the radio antenna
while the internal radio is still powered. Removal of the
antenna while the unit is powered may cause
irreparable
damage to the internal circuitry of your radio, particularly
when the radio is transmitting information.
• This device incorporates circuitry to absorb most static
discharges. However, severe static shock may cause
inaccurate operation of the unit. Use anti-static precautions
where possible.
• This device is a precision instrument. Although it is
designed for rugged operating conditions, it performs best
when handled with care.
• When the port covers are closed, the enclosure is sealed to
provide protection against adverse environmental
conditions. To minimize the possibility of damage, always
keep the ports covered except when in use.
• The GSR2700 IS can accept an input supply voltage in the
range of +9 to +18 VDC. Do not operate the receiver
outside the specified voltage range.
• Drawing more than the specified maximum current (1 amp
combined total) from the two COM ports will cause an
internal fuse to interrupt the current to prevent damage to
the unit. If this happens, immediately reduce the load and
allow the unit to automatically reset its protection circuitry.