## Other sessions
- Session 1 : Powering the board, power use, first (bad) trigging and echoes (06 March 2016)
- Session 2 : Non-controlled pulsing, inverters, better echoes (11 March 2016)
- Session 3 : Getting controlled pulsing, but width not controlled (15 March 2016)
- Session 4 : Width of the pulses is getting controlled =) (19 March 2016)
- Session 4b : Simple data visualisation with BitScope (19 March 2016)
- Session 5 : moving the transducer to get the first image (20 March 2016)
- Session 6 : Getting a clinically usable image (28 March 2016)
- Session 7 : Getting cleaner images - code improvements (3 April 2016)
- Session 8 : Comparing acquisition speeds (3 May 2016)
## Today
_ Getting nicer pulses._
- Managed to switch on and off the HV with USPP and USPN.
- With a 7.5us wide pulse, we see two echoes separated by 7.5us, hence the double echoes for switching on and off the transducer.
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The issue is that the two pulses were not controlled.. so we'll need to find something to synchronise these two, with a 150ns delay..
- High pulses: from a small pulse, echoes are amplified to a 1.54V , on an average of ~0V.
- Need to get a better pulser!
- Tests were done without having put the DAC inputs to GND. That may lead to some issues in reproductibility.
- Need to document the role of Jumper 1 more precisely.
- Let's try to get images from only 2/3, trigging from an external source? -- Without SPI control of the DAC -- With SPI
- We can't get anything at the TP 5/6 signal..
