Q-MAC Electronics Pty Ltd HF90 Manuale Utente

HF-90 Operation & Installation Guide 

Each subsequent press of the CLAR (up) key will increase the 
receive frequency by another 5 units, until the upper limit of 
100 units  is reached. 
 
To adjust the clarifier level on your HF-90 in a downward 
direction (thus decreasing the receive frequency), press and 
release the CLAR (down) key.  The first time you press the 
CLAR (down) key the display will show the numeral zero (as 
illustrated on the previous page).  Press and release the CLAR 
(down) key again.  This time the display will appear as 
follows:- 

Each subsequent press of the CLAR (down) key will decrease 
the receive frequency by another 5 units, until the lower limit 
of -100 units is reached. 
 
Once the clarifier has been adjusted for a particular channel 
the new setting will remain in place until another channel is 
selected or until the HF-90 is switched off.  When returning 
back to the original channel the clarifier setting is not saved - 
ie. it will be set back at the zero level.