Agilent 33521A EPICS IOC

This is an EPICS IOC for the Agilent 33521A 30MHz Function/Arbitrary Waveform Generator.

Building

To build the IOC, you can follow the standard EPICS build procedure for IOC applications. The following EPICS modules are required:

• Asyn (tested with version 4.26)
• StreamDevice (tested with version 2.7.7)

The path to the required EPICS modules should be configured as Makefile variables in the file configure/RELEASE, as the example below:

# file: configure/RELEASE.local
SUPPORT = /opt/epics/synApps_5_8/support
ASYN = $(SUPPORT)/asyn-4-26
STREAM = /opt/epics/stream

Afterwards, from the root repository directory, run make install. At any time, if a rebuild is required, simply run the following commands:

make clean uninstall
make install

Running

To run the IOC application, you need to configure the following environment variables:

• P: first part of the prefix for the PV names
• R: second part of the prefix for the PV names
• DEVICE_IP: IP address of the device to connect to
• DEVICE_PORT: IP port of the device to connect to (the default port on the device is usually 5025)

With the variables exported, you can run the stAgilent33521a.cmd file from the iocBoot/iocagilent33521a directory:

cd iocBoot/iocagilent33521a
P="MYLAB:" R="TEST:" DEVICE_IP="192.168.1.100" DEVICE_PORT=5025 ./stAgilent33521a.cmd

If your shell fails to execute the stAgilent33521a.cmd file you can run the application binary directly by passing the stAgilent33521a.cmd file name as a parameter:

cd iocBoot/iocagilent33521a
P="MYLAB:" R="TEST:" DEVICE_IP="192.168.1.100" DEVICE_PORT=5025 ../../bin/<HOST-ARCH>/agilent33521a stAgilent33521a.cmd

where <HOST-ARCH> is the output folder with the binary for your specific host architecture. If you built the IOC with no cross-compilation configured, there should only be one output directory.

Supported Features

For now, the following features are supported:

• Enabling/Disabling the channel output;
• Selecting the waveform function;
• Configuring the waveform frequency, amplitude, DC offset and phase;
• Configuring square wave duty cycle;
• Configuring ramp function symmetry;
• Configuring pulse width and leading and trailing edge times;
• Configuring pseudo-random bit stream bit rate, edge time and sequence type;
• Configuring noise function bandwidth;
• Configuring arbitrary waveform samples file and sample rate.