... | ... | @@ -30,6 +30,7 @@ the improvements made. |
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- Mark the meaning of B1-B4 and FIG1-FIG6.
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- *Done.*
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... | ... | @@ -63,6 +64,7 @@ the improvements made. |
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the schematic. This should also make clear that it's an input range
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of 10V (Vpp) with a programmable offset between -5V and +5V.
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Possibly give examples of usage to clarify.
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- *In progress.*
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... | ... | @@ -95,31 +97,82 @@ the improvements made. |
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- Add comments on ranges of signals.
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- Add 100nF on +12V\_filtered of ADR445 (IC2).
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- *Done.*
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- Add 100nF on supply of ADA4004 (IC5 DAC buffers).
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- *Done.*
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- Check if the ADC can give out a status on the SDO pins. If so,
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connect it to the FMC connector.
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- *Done. Pin connected to previously unused line.*
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- Use the B version of the reference voltage generator ADR445ARMZ.
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These have a better temperature stability (verify and verify price
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difference).
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- *In progress.*
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- **EP (external pad) of the OPAMP should be connected to the negative
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supply voltage instead of the Gnd. Check with datasheet.**
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- *Done.*
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- **The DACs are supplied with +6V while this is the absolute maximum
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voltage. Check if they should be supplied with a lower voltage and
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how it should be generated.**
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- *Problem solved by adding silicon diode between +6V supply line
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and VDD power pin of the DAC.*
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## Sheet 8: I2C memory and LED indicator
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- **Redo the trigger input stage so that it can withstand a +/-10V
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input signal as users can by mistake connect an input signal to this
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connector.**
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- *Done. Now constant voltage of +/-7.5V and will not damage the
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input.*
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- R117 56 Ohm trigger input termination resistor: use a 0.5 Watt type.
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- *Done.*
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- Verify dissipation capability of R116.
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- *Done.*
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- Change LEDs into green types.
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- *Done. BOM changing in progress.*
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- Add texts to LEDs: Trig'd, OK.
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- *Done.*
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- Add thermometer IC. This can ultimately be used to add a temperature
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compensation. The same chip should also provide a unique serial ID.
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- *Done. BOM changing in progress.*
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- Verify if the memory is large enough to store all calibration
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parameters.
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- \_Done. Dependent on the
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- Put the value of R118/R119 next to component.
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- Document input levels and trigger level.
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... | ... | |