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6.3
Potentiomener 3 (Labelled 4PT385)
This potentiometer is connected to analog input channel 4 as a 4 wire RTD input, and produces a
variable temperature in the range approximately -20 to 200 deg C.
The RTD resistance and corresponding ‘temperature’ can be read by loading the program Prog3.dl8
Fig. 13.
6.4
Speaker / Microphone (Labelled 1*V 7C(LT))
The speaker / microphone is connected to analog terminal 1* and digital input 7. A signal waveform
can be captured from the microphone by the DeLogger program Prog4.dl8 This program takes 1000
samples at 100000 Hz. It also uses a level to start the burst sample taking 500 samples before the
trigger and 500 post trigger.
Fig. 14.
Tap the microphone sharply with your finger or a pencil. The wave form produces can be viewed by
the chart window.
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