The xDlW register class is used for reading and writing delay and width registers on the VXI Trigger module.
This class is now superceded by the xDAC class of which it is a subset.

The class accepts raw data values in hexadecimal format or data in physical units. For example the class understands 0.1kV, 100V or 100000mV as equivalent.

Attributes :-

-s    VXI slot number

specifies the slot number (1-12) within the VXI crate. Manditory - no default value.

-o    offset

specifies the address offset of the hardware register relative to the base of the VXI card. Manditory - no default value.

-u    unit

specifies the SI unit to be used when returning data for read operations.

-q    prefix

specifies the SI prefix to be used when returning data for read operations.
The following prefixes are understood: a (1.0e-18); f (1.0e-15); p (1.0e-12); n (1.0e-9); u (1.0e-6); m(1.0e-3); c (0.01); d(0.1); h(100.0); k (1.0e3); M (1.0e6); G (1.0e9); T (1.0e12); P (1.0e15); E (1.0e18).

-d    decimal places

specifies the number of decimal places to be used when returning data for read operations.

Data being supplied for write operations may be in any format understood by the class.

-r    range

specifies the calibration information to be used when converting data between real (physical) units and digital (electronics) units.
The attribute format is minimum(digital):minimum(real),maximum(digital):maximum(real).
For example an 8 bit DAC may have -r0:0s,0xff:200ns which states that the minimum digital value (0) is equivalent to 0secs and that the maximum digital value (255) is equivalent to 200 nsecs.

-i    initial value

specifies the data value to be used by the INITIALISE operation. The register must also have write permission.
The data value may be specified in real units. For example -i 100ns.