Power On/Off - Topcon DL-501 Instruction Manual

7. POWER ON/OFF

PROCEDURE Power ON
1. Press { }.
When the power is switched on, a RAM check
is run. The Meas mode screen is displayed.
If the tilt screen is displayed, the instrument tilt
sensor is indicating that the instrument is out of
level. Level the instrument once again and the
Meas mode screen will be displayed.

• The tilt screen is automatically displayed on startup when "Tilt warn" in "Obs.condition" is set to "Yes"
and the instrument tilt exceeds the allowable range. Set to "No" to skip levelling on startup.
• Do not remove the battery while the TOPCON logo is displayed.
• "Tilt warn." in "Obs. condition" should be set to "No" if the display is unsteady due to vibration or
strong wind.

"19.1 Observation Conditions"

Resume function
The Resume function redisplays the screen appearing before the instrument was powered OFF
when the instrument is powered back ON. All parameter settings are also saved. This function
is only activated when the power is turn off while performing height difference measurement or
checks and adjustments. When powering back on the screen is returned to the beginning of the
procedure being performed on power OFF.
PROCEDURE Power OFF
Press {} while pressing {

• When there is almost no battery power remaining, "Battery low! Please charge battery." (with
audio tone) is displayed alternately with current screen. In this event, stop measurement, switch
off the power and charge the battery or replace with a fully charged battery. Data and settings
may be lost if the battery is removed while the power is on.
• To save power, power to the DL is automatically cut off if it is not operated for a fixed period of
time. This time period can be set to "30 min." or "No" in "Power off" in "Instr.config".

"19.2 Instrument Configuration"
24
R h
H d
T I L T
}.
M E N U F O C U S
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