Chapter 4: Calibration 29
Speed calibration
This speed calibration procedure involves carrying out two runs over a measured
distance, to enable a calibration factor to be determined and applied to your
ST60+ Speed instrument, to ensure optimum accuracy. Each calibration run
comprises outward and return legs, to minimise the affect of tidal drift when the
calibration factor is determined.
To carry out a speed calibration, start the Intermediate calibration procedure and
use the
speed button to proceed to the Calibration run length screen (see
sheet 1
of the
Speed calibration
flow chart). Proceed with the speed calibration as
follows:
1. With the Calibration Run Length screen displayed, press the
timer and reset
buttons together to enter adjust mode. In this mode, the displayed run length
flashes on and off.
2. Set the length of the intended calibration run, using either the
timer button
to decrement or the
reset button to increment the run length value. You can
set any value between 0.25 and 2.50.
3. Press
timer and reset buttons together to commence the speed calibration.
The Cal status screen is displayed. The text at the top of the screen alternates
between START 1 and the calibration factor currently applied.
4. Start the outward leg of the calibration run and as you pass the start point,
press the
trip button, so the screen shows OUTWARD at the top. As the
calibration run proceeds, the displayed value will increment.
Software
version
Instrument
status
(or REPEATER)
Carry out speed calibration
as detailed in
Speed calibration - sheets 1 & 2
Intermediate calibration
Hold down for approximately 4 seconds
speed trip
and
speed
speed
speed
D8153-1
81261_1.book Page 29 Tuesday, November 29, 2005 12:42 PM
To Next Page
Loading...
Need help?
General
