User manual

MAUI Oscilloscopes Remote Control and Automation Manual
Approach 4: Program Using VISA
If you do not wish to utilize ActiveX controls like ActiveDSO, any programming language that can connect
through VISA can be used to send Automation commands. Teledyne LeCroy oscilloscopes are designed to
work with VISA drivers for ENET, USBTMC, or GPIB remote connections. It is not necessary to have a
DCOM connection when you are using a VISA driver.
In this exercise, we'll create a Python script designed to connect over the LAN, as in the previous exercise,
but using LXI remote control settings.
Note: All the code examples given here use the LXI VISA resource string, not the TCP/IP VISA
resource string. Both the TCP/IP and LXI settings utilize the TCP/IP layer, but the higher-level
protocol is different, as is the VISA resource string. You can use the LXI option to communicate
with oscilloscopes even if your network is not set up to be LXI compliant.
Preliminary Setup
This exercise requires a bit more setup than the previous, but by doing so, it will better demonstrate how
you may use Automation to set up and retrieve measurement data.
1. On the PC, install a VISA driver , Python, and the compatible Python for Windows extensions.
2. Turn on the oscilloscope. Be sure it is connected to your LAN.
3. Connect one of the passive probes delivered with your oscilloscope to the Cal Out/Aux Out on the
front of the instrument (what it is named will vary by model) and the C1 input.
4. Go to Utilities > Utilities Setup > Aux Output and choose to output a 1 KHz, 1 Volt Square Wave or
whatever is the default selection for your oscilloscope (there should be a button).
5. Adjust your timebase until you see a stable pulse on the oscilloscope.
6. Go to Utilities > Utilities Setup > Remote and select the LXI (VXI-11) setting. Note the oscilloscope's
IP address.
7. On the PC, open XStreamBrowser and Notepad or another text editor.
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