Andrea C

In attached document, is more info and a sample TSP script.

On each of the DB78 connectors on the 3720 card, there are the +ILK and -ILK pins.
Make sure to jumper these two pins together to enable the closure of the backplane relay.

NOTE:  when using the 3720-ST wiring accessory, these jumpers are made for you.

The IVI driver did not define a means to query that information from the card.
The IVI driver does however have WriteString and ReadString as part of the DirectIO interface.

//ask for closure counts from a channel list 
driver.System.DirectIO.WriteString("print(channel.getcount(\"1001,1911\"))");
                
resultsListBox.Items.Add(driver.System.DirectIO.ReadString());

 

Hello,
Please elaborate on the sweep until it finds a drop in current.  Is the sweep implemented as a loop controlled from LabVIEW?  And the LV code is where the evaluation about current drop occurs?
 

In the KickStart, for SMU1 where you force 0V, the current limit is set to 1uA.
If you expect more Ids current than this, please increase.  

You mention the AFG is driving the gate.  AFG typically uses BNC.  Is the outer shell of this connected to the common LO of the SMU channels?

I expect each SMU connects their HI to the Source or Drain.  The LO of these two SMU are connected together for a common reference point.
You also need the LO of the Vgs from the AFG to share this common reference point.

Are you sure it is an A version?  There was an earlier version without any letter suffix (2636 vs 2636A vs. 2636B).
The original 2636 level would not recognize the smua.trigger..... like what you experience.

When you query the *IDN? command, what is the returned model number in the response?

On 3730, if able to read a voltage or ohms, you are probably closing backplane relay #1 to route a closed matrix crosspoint on row 1 to the internal voltage meter of 3706A.
Amps measure input terminals on a multimeter are different from terminals for the VDC or Ohms.

If you want to route a closed channel to the Amps meassure, make use of backplane relay 3 and do the measurments on that row.
But you need to get the Amp meter connected to backplane relay 3.
On the rear panel of 3706A is the DB15 connector which offers you connections to the DMM terminals and the backplane relays,
Jumper the Amps HI and LO to backplane relay HI and LO on the DB15.
Now when you close a matrix cross point and the backplane, the amp meter will be in series.

NOTE:  when not routed through the amp meter, the circuit will be open and no current will flow.
If that is a problem, consider placing a current completion shorting jumper on backplane relay 4 and close your current carry channels on that row.
But keep in mind max current on the switch if multiple channels will be closed to this one jumper.



 

Before using Labview or any other software, try just manual operation by pressing the Delta button on the 6221.
Reboot both.  Press Delta button and accept the default parameter values.  Press TRIG button when prompted.
Can that succeed?

Common pitfalls:
the RS-232 cable needs to be of type null modem.  That is the type we ship with 6221/2182A.

On both the 2182A and the 6221, configure the RS-232 settings.
 (19.2k BAUD, Flow is XonXoff, Terminator is CR).

After setting RS-232 settings on 6221, make GPIB or LAN the active interface.  Otherwise you will see error +809.
 

The SEQ does have separate license to have all features such as repeat, jump, etc.
Without the license, can load one waveform and continuous mode.

Obtain Trial License

What is the serial number?