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Totem MiniLab
Measuring voltages
LabBoard has a 3 channel voltage measurement module. Each has a pre-set measurement
range:
• ± 0.5 V - best to be used when measuring small scale signals when maximum precision
is required.
• ± 5 V - for measuring TTL logic level signals.
• ± 50 V - for external signal measuring.
Left display is used in the LabBoard for showing currently measured voltage. Currently
active channel is selected with a button under the display, and the current active channel
LED lights up.
Display shows value in millivolts when using ± 0.5 V channel, otherwise the output is in
Volts. Blinking display indicates that currently measured voltage is negative.
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Fig. 5 Voltage measuring module
Example
1. Connect the ± 5 V input with a 3.3 Volt output.
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