Integration Guide
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7
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Control Interfaces
Reset
Driving the
Reset
pin (PIN 11) on the host interface connector low for 100us-500us can reset the RT207.
However, do not reset the engine at unreasonably short intervals. The minimum interval between resets
must exceed 2 seconds.
Trigger
Driving the
nTrig
pin (PIN 12) on the host interface connector low for over 10ms causes the RT207 to start a
scan and decode session. If barcode is decoded, the RT207 waits for the voltage at the nTrig pin to turn high
(or the trigger to be released) after sending the data to the Host. If the trigger is released during a scan
attempt, the RT207 immediately stops decoding.
Next decode session does not happen until the RT207 receives active trigger signal (driving the nTrig pin low)
again.
As a decode session involves image capture, barcode decoding and other steps, it is suggested that the
minimum interval between triggers should exceed 50ms.
The following trigger circuit is provided for reference.
B3F-4000
S1
2
3
1
4
5 6
C3
100pF
CBW1608/60R
L1
C4
100pF
nTrig
R15
10K
VDD
