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5
Remote Interface Operations
M3510A/11A supports two remote interfaces: the built-in USB and
optional GPIB (IEEE-488). With GPIB, you will need a GPIB interface card.
This chapter lists the SCPI (Standard Commands for Programmable
Instrument) commands available to control the multimeter. For the first
time to use SCPI, users would better to refer to Appendix B. for SCPI
reference.
5.1 Pass/Fail Output From USB Connector
The USB connector on the rear panel of M3510A/11A is a series “B”
connector. When the USB interface is
disabled
(IEEE-488 interface is
selected), the internal pass and fail TTL output signals (limit testing) will
be transmitted via the USB port.
The pass and fail signals are low true and indicate the Math Pass/Fail
Limit Test result for the
next
reading to be output to the GPIB interface.
The signals are active low for approximately 2ms (
±
100
µ
sec) for each
reading taken.
Figure 5-1
shows the USB connector (series “B”).
Figure 5-1
