Agilent Technologies Switch/Measure manual Real-Time System Clock, Relay Cycle Count

2Features and Functions

Real-Time System Clock

During a scan, the instrument stores all readings and alarms with the current time and date (based on a 24- hour clock).

•When shipped from the factory, the instrument is set to the current time and date for Greenwich Mean Time (GMT).

•The clock setting is stored in non- volatile memory, and does not change when power has been off, after a Factory Reset (*RST command),

or after an Instrument Preset (SYSTem:PRESet command).

Front Panel Operation: Utility > DATE/TIME

Remote Interface Operation: The following commands show how to set the

time and date.
SYST:TIME	15,30,23.000	Set time to 3:30:23.000 PM
SYST:DATE	2004,11,24	Set date to November 21, 2004

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 70 for more information.

Front Panel Operation: View > RELAY CYCLES

Turn the knob to read the count on the desired channel relay or

Analog Bus relay.

68 34980A User’s Guide