Bosch Security Systems Inc. M521 Manual Do Utilizador

 
Operating Instructions:   Battery Power is applied to the transmitter with the toggle switch on the top 
of the transmitter. The display on the top of the transmitter will then show the Operating Channel, a small 
Lock icon (if Lock is ON) and E.D.R. The two pushbuttons above the display are used to “program” the 
remainder of the transmitter functions, as shown below. The “Set” button is on the left and the “up” button 
is on the right. Pressing the Set button one time will cause the item on the display to “blink” or “flash”. 
Pressing the Set button again will “Set” or store the item in memory. When the displayed item is flashing, 
pressing the Up button selects the next item. Once the desired item is selected, press Set again to store the 
item in memory. The Lock function must be disabled to make any changes. 

 

 

Operation 

 

Function/Result 

 

 
Press and hold the Set and Up buttons for 5-10 seconds until the Lock icon either comes on the display 
or goes off the display as desired. If you hold both buttons too long, the Lock will come back on or go off. 
 
Press set 

 

Channel (“blinks”) flashes. 

Press up  

 

Channel increments. Stop on desired channel. If the channel is missed, continue  
pressing the Up button until the desired channel appears again. 

Press set 

 

flash stops, Channel is set in memory. 

 
Press set 

 

Mic Gain setting flashes. 

Press up  

 

Audio Level increases at 6 dB per step. (see E.D.R. and AUX audio section) 

 

 

 

If the desired setting is missed, continue pressing up until desired level appears again. 

Press set 

 

flash stops, Level is set in memory. Terminates edit mode. 

Special Function Programming: 

E.D.R. : If E.D.R. does not already show on the display and Enhanced Audio Performance is desired,  
Switch the toggle switch off for a few seconds. Press and hold the Set button, switch the toggle switch  
back ON. The E.D.R. icon will be ON if E.D.R. is enabled. To disable E.D.R., Hold the Set button down 
when the power is applied. 
 
Low Battery: The Treble Clef icon flashes when the battery voltage goes below 2.0 Volts.