Topcon DL-501 Instruction Manual page 21

Key operation for Remote trigger (DLC1A)
DLC1A comes as standard with the DL-501 Advanced and is an optional accessory for the DL-501
Standard.

"4.1 Basic Key Operation"
The DL is operated from the Remote trigger by pointing the Remote trigger beam at the DL and
pressing the required operation keys.
Remote operation

• When sunlight shines directly into the Beam detector on the DL, remote operation with the Remote
trigger may not work correctly.
Beam source
Key panel
4. BASIC OPERATION
{MEAS}
{ENT}
{ESC}
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