RetroSign GR1 & GR3 · Retroreflectometer
13
Battery / charging
Never
disconnect the battery while the instrument is turned on as this may result in lost data and malfunction of the in-
strument.
Temperatures in excess of 50º C (122º F) will damage the battery. Do not short circuit the battery. Do not dispose with
household waste.
To remove the battery swing the battery retaining spring over, and disengage the battery from the handle. See
Section 4
- Battery
for further information on charging.
Remote control
External trigger option
(Optional)
By connecting a remote trigger box to the rear connector on the instrument it is possible to do measurements using an
extension pole.
As an accessory an Extension pole kit can be supplied.
Computer interface
The instrument is equipped with a device USB port; this allows complete remote instrument control and measurement
data collection.
Use the Road Sensor Control (RSC) software to offload measurement records or to control the RetroSign.
Use of the USB connection requires the installation of a special software driver on the PC which can be found on the
instrument CD..
See
Appendix B - Communication facilities
.
Support flange
The support flange is provided with cross hair markings. It makes it easier to decide the measuring position when taking
measurements on small objects, e.g. letters and numbers on a sign.
Aperture reduction
For special measurement requirements on small targets, the RetroSign can be mounted with a special aperture reducer
adaptor; this reduces the field of measurement to either ø 15 mm (0.6 in) or ø 10 mm (0.4 in) depending on the unit used.
The ø 15 mm is supplied with the RetroSign while the Ø 10 mm is optional.
To achieve the smaller aperture, the reduction unit is simply mounted in front of the lens barrel.
Disable the Calibration Monitor when using the Reducer!
See Menu Items on how to disable the monitor.
IMPORTANT!
Remember always to calibrate the instrument after changing the aperture setting.
Note:
•
RetroSign is an optical precision instrument, handle with care.
•
Store in clean and dry environment.
•
Do not recharge after using the instrument only briefly.
•
Never remove the battery when the instrument is ON
•
Carefully check and clean the
reference cap
, the reading is very sensitive to contamination.
