36
Display (LS-70A/70B)
High precision mode
Normal precision mode
RL-H1Sa Height Alert warning *
The sensor will signal if the laser has been
disturbed so the height of the instrument
can be checked.
The buzzer will sound for about five sec-
onds and the height alert warning symbol
will flash until the sensor detects normal
beam rotation from the laser. To obtain nor-
mal beam rotation, the RL-H1Sa must be
turned off then back on. Then check that
beam height has not changed (See page
16).
RL-H1Sa Battery warning *
The sensor will signal if the battery of the
RL-H1Sa is low. The laser low battery
warning symbol will flash on the LS-70 dis-
play. No audio signal is generated for this
warning.
Above grade indicator
Move the sensor down, The arrow will
become shorter as the on-grade position is
approached (see next page for specific
information).
Audio signal: High- pitch, frequent beep.
On-Grade indicator
(Audio signal: Continuous beep sound)
Below grade indicator
Move the sensor up, The arrow will become
shorter as the on-grade position is
approached (see next page for specific infor-
mation).
Audio signal: Lower- pitch, slower frequency.
Sensor battery indicator
Indicates the battery status of LS-70A/70B
as follows.
Flashing alternately
Battery is sufficient.
The power is low, but sensor is still usable.
Dead battery. Replace the 9v alkaline bat-
tery as instructed on next page.
*Warning detection at the LS-70 can be
canceled by turning off the LS-70, then
turning it back on while pressing the buzzer
sound switch.
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