Agilent 34980A  Multifunction Switch/Measure Unit *34980-90005*

3 Features and Functions
Relay Cycle Count
The instrument has a Relay Maintenance System to help you predict relay
end- of- life. The instrument counts the cycles on each relay in the
instrument and stores the total count in non- volatile memory on each
relay module. You can use this feature on any of the relay modules and
the internal DMM.
In addition to the channel relays, you can also query the count on the
Analog Bus relays and bank relays.
You can query the state of six relays associated with function selection
and isolation on the internal DMM. These relays are numbered K102
through K107.
You can reset the cycle count on any of the channel relays, Analog Bus
relays, or bank relays (allowed only from remote) but the instrument
must be unsecured. See “To Unsecure the Instrument for
Calibration” on page 155 for more information.
Remote Interface Operation: To read the count on either the specified
internal DMM relay or module channel relays, send the following commands.
DIAG:DMM:CYCLES? 2
DIAG:RELAY:CYCLES? (@1003,1013)
To reset the cycle count on the specified module channel relays, send the
following command (the instrument must be unsecured).
DIAG:RELAY:CYCLES:CLEAR (@1003,1911)
SCPI Language Version
The instrument complies with the rules and conventions of the present
version of SCPI (Standard Commands for Programmable Instruments).
You can determine the SCPI version with which the instrument is in
compliance by sending a command from the remote interface.
You can query the SCPI version from the remote interface only.
The SCPI version is returned in the form “YYYY.V”, where “YYYY”
represents the year of the version, and “V” represents a version number
for that year (for example, 1994.0).
Remote Interface Operation: SYSTem:VERSion?
154 Agilent 34980A Mainframe User’s Guide