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Other Procedures

E432 • Too dark.

• The brightness level sud-

denly altered during the

measurement.

E440 • The instrument is subject

to excessive vibrations or

hot conditions are pro-

ducing shimmer.

• The staff is stationary, or

the waving angle thereof

is insufficient when per-

forming Wave-and-Read

measurement.

E456

E457

• The staff height being

sighted is either less than

0.5m (too low) or greater

than 4m (too high) when

performing Wave-and-

Read measurement.

E458

E459

• The distance to the staff

is either less than 5m

(too near) or greater than

50m (too far) when per-

forming Wave-and-Read

measurement.

E498 • Measurement results not

obtained within 20 sec-

onds of starting Wave-

and-Read measurement.

Error Message Coded Message Meaning

• Coded messages are not displayed on DL-502/503 display.

• No error message displayed when compensation range (±15') is

exceeded.

Note:

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Topcon DL-502 User Manual

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