User guide
Chelsea Technologies Group 
FAST
tracka 
User Guide HB179 Issue 7.0 
 Page 
16
 of 
47
charge connector. Do not try to seal the recess of the battery can charging plug to the battery 
can (e.g. in order to protect it from salt spray). Ensure that while charging, that the charge plug 
area is kept free from spray or wash. 
Gently remove the stainless steel charge plug on the bottom of the battery can by hand, taking 
care not to damage the o-ring or o-ring surfaces. Inside the 1-12 threaded hole may be seen the 
internal charging receptacle. Correctly align and connect the polarised battery charging cable 
from the Deck Unit, and secure the charging cable to something solid (e.g. with cable ties) to 
prevent an accidental tug on the cable from damaging the internal componentry of the battery 
can. 
With the charging cable attached, supply power to the Deck Unit through the mains plug. 
Charging will automatically occur at the maximum recommended rate until power is removed or 
the battery charge connector is disconnected. The instrument is configured to automatically shut 
down if the battery voltage falls below 13.5 volts. 
Battery voltage (charge status) can be read from the software in the System Setup menu. To 
accomplish this, have the battery pack connected to the instrument. Switch off the mains supply 
at the Deck Unit so that the charging ceases and battery pack takes over powering the 
instrument. After checking charge state in System Setup, the mains can be reconnected and 
charging can continue. Typical times to charge a standard battery pack using the Deck Unit: 
•  from 10% to 80% in 5 hours; 
•  from 10% to 95% in 24 hours.  
Proper charging procedure will ensure safe and efficient maintenance of the rechargeable 
battery pack. The internal charging circuitry has over voltage and over current protection, but 
every effort should be made to ensure that the recommended limits to charging are not 
exceeded  
3.12  OPTICAL REQUIREMENTS 
3.12.1  Exterior Windows 
The exterior optical windows are made of Acrylic, selected for its sheer strength and optical 
transmission characteristics. The FAST
tracka
 should not be supported by or on its optical 
windows. 
The windows may need to be cleaned from time to time. Use lint free tissue to remove most 
material, then clean the windows with impregnated optical paper. DO NOT USE SOLVENTS on 
the optical windows. The solvents will damage the windows & seep into the channels under the 
window retainers and degrade the o-rings there, leading to premature failure. Be sure that all 
fingerprints, oils, and other fluorescence sources are removed from the optical windows before 
instrument operation. Otherwise these substances will be a source of signal contamination. For 
that reason, soaps and detergents are not recommended for cleaning optical surfaces. 










