[what can be expected for the (nearer) future]

Hi @leonvs

The ADP3450 (also AD1, AD2) can use compression in Record capture.
In Standard boot mode will use up to 64MiS buffer. With compression half used for sample and other half for count.

[WaveForms: Searching through decoded output]

Hi @binaryBasher

You can use the Logic Analyzer (ASCII/HEX representation looks like this) or the Protocol / UART (for text only).

[Any way to do a PID loop closure using Analog Discovery? Script?]

Hi @mkj

The ADP3450 includes embedded Linux and WaveForms SDK/API that can be used for custom application/script.
The same SDK can be run on host computer to control ADP, AD2...

 

[Impedance measurement for high current application]

Hi @DIGI_USER2

Yes, it should work.
The oscilloscope inputs measure voltage. In case you are using low shunt resistor, with low voltage drop, an amplifier would be good to rise the voltage. The AD2 scope input ranges are 5V and 50V pk2pk.

[Waveforms sending UDP packets to .0 IP addresses as 7.0.0.0 USAs military network (DISANET7) from Linux machine]

Hi @moha

It may have something to do with the Ethernet discovery functions.
In the newer beta version the network enumeration can be disabled.
https://forum.digilentinc.com/topic/8908-waveforms-beta-download/
Under options you could also disable the update check.

[Continuous sampling with ADP3450?]

Hi @MTA

Yes, with WF app Record 128MiS = 2^27 samples and 16bit resolution with 25/31.25MHz or below.
With custom app/script or the new "Record to File" option "unlimited".

[Any way to do a PID loop closure using Analog Discovery? Script?]

Hi @mkj

See the following posts:

[Analog Discovery Studio]

Hi @Leo_W

That is an USB hub branching in 3: to Analog Discovery, external port A and canvas J13.
If you are not using the last 2 you could connect the USB directly to the AD.

[Continuous sampling with ADP3450?]

Hi @MTA

The next software version will have "Record to File" with binary, tdms, wav, csv, txt options.

[Analog Discovery Waverforms Script - scope time parameters]

Hi @mkj

I'm glad to hear that.

BTW: I use the Script for RD on Analog Discovery products :)

[Analog Discovery Waverforms Script - scope time parameters]

Hi @mkj

Use Scope.Time.Base.value = 0.001 or Scope.Time.Base.text = "1ms"

See the Help tab, press F1, use Ctrl+Space for code completion.

[cracked component on AD2 USB input]

Hi @alexconway

First, to see if the board is alive you could short it.
For more detail see the following post:

 

[custom digital protocol for digital discovery]

Hi @e0ne199

I don't know what protocol do you want to implement.
The Protocol tool uses the Pattern generator and Logic analyzer device resources, the digital-out/in API. The library and application are written in C.
The java/python/.net solution may have lower performance.

[custom digital protocol for digital discovery]

Hi @e0ne199

You could use the Pattern generator with custom signals and the Script tool or the SDK for custom application/script.

[Analog Discovery 2, broken scope?]

Hi @EdWall

Here the GND is highlighted with red and VIN_SC2_P with with contour.
The ground plane around C55 and R40 pads has low clearance. This has solder mask but could have been scratched during rework...

[Logic Analyzer and WaveForms: How does bus and clock work?]

Hi @LarsB

In demo mode only basic functions are simulated like the earlier simple capture but sync mode is not working, record may work.

[AD2 scope oversampling with ext trigger: communication error]

Hi @CeeKay

Probably under Linux the USB transfer rate is lower or the latency is higher and this result in lower sustainable streaming rate.

Suggestions to improve the script:
1. I suppose you are using trigger position zero (default) (FDwfAnalogInTriggerPositionSet) or no trigger (also default when not configured at all).
This way the streaming will start only when triggered (or immediately), reducing the change of device buffer overflow.
2. Specify the required record length (FDwfAnalogInRecordLengthSet) 10-16k instead of constant 50k.
This way the recording will stop after the needed samples are collected, reducing the chance of overflow.
3. For AD2 you could try to use the 2nd device configuration with double analog-in (Scope) device buffer. Note this will reduce the analog-out (Wavegen) buffer size (resolution).
dwf.FDwfDeviceConfigOpen(c_int(-1), c_int(1), byref(hdwf)) 

The improvements in the latest beta are for the ADP3X50.

 

[How can i used digital discovery clock source for external]

Hi @jakey

You could use the Sync capture mode, see the post below:
The external clock function is available with Electronics Explorer but not with Digital Discovery.

 

[Logic Analyzer and WaveForms: How does bus and clock work?]

Hi @LarsB

You could use the Sync capture. In this mode the sampling condition is executed in the device.

 

You could also sample all signals (including clock) and decode it in the software using the Bus clock, delay, enable...
Regarding the MSB/LSB indices, by changing these you could decode to fractional numbers.

 

[AD2 scope oversampling with ext trigger: communication error]

Hi @CeeKay

Sorry but I thought this post is about ADP3450 :)

The "invalid data count provided" is when index + count is higher than the buffer size or negative.
See the AnalogIn_Record.py AnalogIn_Record_Trigger.py or the other examples.
How many samples are you capturing? are you using trigger? if so where is the trigger position?
Could you post or send me your record loop code?

This is ok:

 

The device buffer overflow, like here at 5MHz, results is similar data corruption:

 

At higher rate or latency also results in loss of samples:
 

[Ammeter for Analog Discovery Studio]

Hi @FrankS

The 1GHz oscilloscope may be an overkill for such task but you could do something like this with ADP5250.
We are planning on a voltage/current adapter for Analog Discovery but it will take some time to be available.

[Continuous sampling with ADP3450?]

Hi @MTA

For performance reasons the application limits the capture to 128MiS and the data can be exported to file.

For larger capture the example Python scripts can be used.
In the future I'll add record to file option for the application.

In Standard boot mode (usb and ethernet device) the recording can go up to ~20MSps (4channel x 5MHz) since this uses the device DDRam as 128MS buffer.
In Linux device mode about 4MSps (4channel x 1MSps or 2 x 2MSps or 1 x 4MSps).
These rates depend on the computer.

 

[Continuous sampling with ADP3450?]

Hi @MTA

The mentioned limit is for the Logger tool in the WaveForms application.

For the ADP3X50 the maximum rate for 'unlimited' recording (Scope to PC) over USB or Ethernet is about 4MS/s.
In embedded Linux mode it can capture at much higher rate, depending on storage media (Ram, EMMC, USB...), CPU utilization...
In Standard boot mode it can capture 128MiS at up to 125MHz.
For details take a look at the WF app Help:

[AD2 scope oversampling with ext trigger: communication error]

Hi @CeeKay

Have you used USB or Ethernet connection?

Please try the latest WF beta version:

This brings some improvements for recording over Ethernet with Standard boot mode and further optimizations if less channels are used.

 

If this doesn't help try the Linux boot mode.
The Standard is a baremetal app with USB and Eth (LwIP). The Linux is a bit slower but it could provide better network support.

 

[Can I send data via uart from Analog Discovery 2?]

Hi @kaamil1984

It can be done.

1. You can use the "Send & Receive" tab of UART.

 

2. To automate things you can use the Script tool.

 

3. WF SDK for custom app/scripts.

On 10/5/2021 at 10:45 AM, attila said:

3. WF SDK, see manual and examples/ py/ Digital_Uart.py