32  3M™ MicroTouch™ Controller EX USB Reference Guide 
3M Touch Systems, Inc. Proprietary Information -- 29489v05  
 
Ambient Operating and Storage Environmental Conditions  
Note: All humidity is non-condensing 
 
Operating Temperature Range   
-40 C to +70 C 
Operating Humidity Range  < 36° C 0-90% RH 
≥ 36 C (refer to Figure 4) 
Storage Temperature Range    
-50 C to +85 C 
Storage Humidity Range  < 36°C 0-90% RH 
 ≥ 36 C (refer to Figure 4) 
 
Performance and Reliability 
 
Minimum Touch Duration  Typically 5.4 msec. 
Touch Resolution – (Maximum addressable coordinates generated by the 
controller) 
16K x 16K 
ESD Susceptibility
1
 -   
8 kV Contact Discharge – Class 2 per section 9 of IEC 61000-4-2  
1 false touch allowed 
Compliant 
27 kV Air Discharge – Class 1 per section 9 of IEC 61000-4-2
Normal Operation – No false touches 
Compliant 
MTBF (by MIL Std. 217F Calculation)    500,000 Hours  
 
Touch System Parameters 
 
Accuracy vs. Dynamic Temperature Change  
(Tested at 0 deg. C to 60 deg. C with a 0.5 deg. C/minute temperature ramp)    
Maintains 99.0% 
Accuracy 
Sensor Compatibility Sensors 
3M™ MicroTouch™ 
Surface Capacitive 
Communications Protocol  USB 
 
1
 ESD discharges to a 3M Touch Systems sensor connected to the controller