Getting started
Buttons
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Calibrate | Sc roll down | Scroll up | ON |
Measuring
Turn the instrument on by pressing and holding the 
button until the LCD shows:
Retrometer LTL2000SQ v1.6
Retrometer
Calibrate the instrument if necessary, see Calibration page 6.
Place the instrument on the road marking. Press the 
key.
The measurement will start instantly. Duration approx. 3 sec. depending on measurement mode (approx. 5. sec when measuring both Rl and Qd).
When finished the measured Rl (and Qd) values, the date/time or measurement id and status info is displayed. The information’s are automatically transferred to the internal data log for later readout to the serial communication port or printout.
The instrument can automatically calculate and display the mean (average) value of 2 or more measurements, if the Mean Calc function is ON. See Menu system.
Warning and Errors
Warning and errors are indicated in the lower right positions in the second line of the display:
*= Everything O.K.
W | = | Warning | Measurement O.K. but warning condition detected. |
L | = | Warning | Measurement O.K. but high stray light detected. |
E | = | Error | Measurement unreliable. |
If the error indicator is different from * then press 
to
measurement or press 
one or more times to select Status Display and then use 
to
DELTA | LTL2000S(Q) Retroreflectometer | 3 |
