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Updated Home (markdown)

Chris Esposito 2018-03-27 10:19:02 +11:00
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Home.md

@ -26,7 +26,7 @@ Each version of the software interface is compatible with a specific version ver
In case this goes wrong, you can enter bootloader mode and flash manually.
Bootloader mode is accessed by shorting Pin 1 from the digital out to GND **before connecting your board**. While in bootloader mode, you can update the board’s firmware and recover from potentially bad firmware updates.
Bootloader mode is accessed by shorting Digital Out 1 to GND **before connecting your board**. While in bootloader mode, you can update the board’s firmware and recover from potentially bad firmware updates.
There is a tool to do so in the later versions of the software ("Update 2" and onwards).
Just go to help->firmware recovery in the software interface.
@ -93,7 +93,7 @@ The oscilloscope was designed to be beginner friendly. For this reason, setting
**To enable 750ksps:** on channel 1, select "double sample rate". The default is 375ksps.
All references shown are relative to USB GND (Pin 2 of the power supply).
All references shown are relative to GND.
## Signal Generator
@ -113,9 +113,9 @@ Unlock, drag the slider, re-lock. Big display at the bottom will tell you how m
Hardware-wise, the multimeter is just an alternative configuration of the oscilloscope with some additional software added. It measures the difference between the oscilloscope CH1 and CH2 pins, and uses 12-bit samples at 375ksps. The normal oscilloscope uses 8-bit samples only, **so sometimes the multimeter will function as a better oscilloscope than the oscilloscope will**!
**To measure voltage: **set the mode to "V" and connect the load in parallel to Pin 1 of Oscilloscope CH1 and Oscilloscope CH2.
**To measure voltage: **set the mode to "V" and connect the load in parallel to Oscilloscope CH1 DC and Oscilloscope CH2 DC.
**To measure current:** set the mode to "I" and connect the load in series to Pin 1 of Oscilloscope CH1 and Oscilloscope CH2. Add a reference resistor across Pin 4 of the two oscilloscope channels that:
**To measure current:** set the mode to "I" and connect the load in series to Oscilloscope CH1 DC and Oscilloscope CH2 DC. Add a reference resistor across one of the duplicate DC pins of the two oscilloscope channels that:
* Is at most 10% of the load resistance.
@ -125,7 +125,7 @@ Then type in the reference resistance used into the box.
As an example, if you are measuring the current through a circuit that you suspect draws 50mA from a 3.3V source, you can guesstimate its load resistance to be 66Ω (as per V=IR). 10% of this is 6.6Ω. To drop 50mV, you’ll need to use at least a 1Ω resistor. So the reference resistor you’ll need for this circuit should be in the range of 1Ω-6.6Ω Ohms. A 2.8Ω or 3.3Ω resistor will be ideal in this case.
**To measure resistance/capacitance: **connect your load to Pin 4 of oscilloscope CH1 and CH2. Connect Pin 1 of Oscilloscope CH1 to Pin 3 of the signal generator. Connect your reference resistor between Pin 1 of Oscilloscope CH2 and GND.
**To measure resistance/capacitance: **connect your load to one of the duplicate DC pins of oscilloscope CH1 and CH2. Connect Oscilloscope CH1 DC to Signal Gen CH1. Connect your reference resistor between Oscilloscope CH2 DC and GND.
For resistance, you’ll want to aim for a reference resistor as close to the load resistance as possible. To be more accurate, you may want to take multiple measurements.