FLIR Commercial Systems Inc. RT30 Manuale Utente

  

™ Engineering Design Specification

 

 

Page 8 of 20

                  

 

 

An optional External Probe can be used to clamp onto tested wiring.  The probe is shown in Figure 5.  Using the 
External Probe is exactly like using the NCV Channel.  When the External Probe is plugged in, the External 
Probe LED shall indicate its use. 
 
Note:  Use of the External Probe overrides the setting of the Power/Mode Switch.  Light Mode cannot be used 

while the External Probe is attached. 

 
 

 

 

 
 
5.0 SYSTEM 

The RT30 shall use the Microchip PIC16F677 flash MCU, based on the Microchip’s 14-bit RISC architecture, for 
both the TU and RU master controllers.  The PIC16F677 was chosen for its combination of low power operation, 
low cost, and system flexibility. 
 
Features of the PIC16F677 include: 

 

•  4KB of on-board Flash ROM 

•  internal 8- and 16-bit timers with pre-scaling 

•  128 bytes of on-board “scratchpad” RAM 

•  internal power-up and “watchdog” timers 

•  256 bytes of on-board EEPROM 

•  up to 12 analog inputs 

• sub-250μA operating current 

•  up to 18 general-purpose I/O (GPIO) lines 

(1)

 

•  internal programmable SPI/I

2

C port 

•  20-pin DIP, SOIC, and SSOP packaging  

•  on-board oscillator with 2% accuracy 

•  sub- and superset parts available 

 

Notes: 

1. 

Use of other built-in features takes away from this “pool” of available GPIOs.