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VX4101A MultiPaq Instrument User Manual
The VX4101A is programmed by issuing ASCII characters from the system
controller via the VXIbus commander and the VXIbus mainframe backplane.
Refer to the manual for the VXIbus device that will be the commander for details
on the operation of that device.
Instrument Control. You can control the instrument through either SCPI
commands or through VXIplug&play instrument drivers. The SCPI command
sets for each instrument conform to SCPI 1995 standards. The VXIplug&play
driver functions conform to 1997 standards as determined by the VXIplug&play
Alliance.
NOTE. SCPI permits a great deal of flexibility in the form in which you can enter
commands. Examples throughout this manual use various forms of the command
syntax to further illustrate these concepts.
Fast Data Channel. To maximize throughput, some of the the VX4101A
instruments support Fast Data Channel, a VXI Consortium standard protocol for
high speed block transfers of data. The VX4101A architecture implements FDC
V2.0 with a maximum of eight FDC channels per VXIbus module.
NOTE. The Digital Multimeter (DMM) and Digital to Analog Converter (DAC)
each use one FDC channel, which the VX4101A assigns at power-on.
Triggers. Each instrument in the VX4101A that supports triggering can trigger
any other instrument or the backplane TTL triggers.
You can enhance the performance of the VX4101A with the following options:
Table 1–1: VX4101A Performance Options
Description Option #
500 MHz Ch1 and Ch2 1C
3 GHz prescaler Ch3 2C
8 Ch DAC 1A
32 bit Digital I/O 1D
TCXO 1T
The Universal Counter in the VX4101A provides two input channels to make
frequency, period, rise and fall time, positive and negative pulse width, positive
and negative duty cycle, frequency ratio, totalizer, time interval, time interval
with delay by time or events, phase, and AC/DC voltage measurements.
Performance Options
About the Universal
Counter