Use the ptp.enable (on page 11-305) attribute to enable IEEE-1588 on the Series 3700A. The IEEE-
1588 protocol then determines the master clock. The IEEE-1588 indicator on the front panel of the
Series 3700A updates to display the IEEE-1588 status.
• If the indicator is off, IEEE-1588 is disabled or the device is not connected to a working network.
• If the network is not working, the LAN indicator blinks. If the indicator is solidly on, the IEEE-1588
is successfully enabled and synchronized, and the Series 3700A is a subordinate (slave) clock.
• If the indicator blinks once every second, IEEE-1588 is successfully enabled and synchronized,
and the Series 3700A is the master clock.
• If the indicator blinks once every two seconds, IEEE-1588 is successfully enabled and
synchronized, and the Series 3700A is the grandmaster clock.
The ptp.enable (on page 11-305) attribute is saved in nonvolatile memory. Therefore, if you turn off a
Series 3700A with IEEE-1588 enabled and then turn on the Series 3700A power on a different
network, it attempts to synchronize with any other IEEE-1588 enabled devices on that new network.
You do not need to re-enable IEEE-1588.
Monitoring alarms with LAN triggers and LXI event log
Use the LXI event log to monitor the firing of scheduled alarms. The LXI event log in the Series
3700A only captures LAN triggers that occur in its defined LXI domain. To monitor alarms, configure
the alarm to generate a LAN trigger by using schedule.alarm[N].EVENT_ID (on page 11-338) as the
control source for lan.trigger[N].stimulus (on page 11-280) in the trigger model. You can define up to
eight LAN triggers.
Use lan.lxidomain (on page 11-264) to specify the LXI domain. Additionally, you can broadcast LAN
triggers to all devices on an LXI domain, or you can transmit LAN triggers between two individual
devices. To configure the LAN trigger broadcast, use lan.trigger[N].protocol (on page 11-279).
The following example demonstrates how to generate a LAN trigger when a scheduled alarm fires:
-- configure the LXI domain
lan.lxidomain=0
-- configure the LXI trigger to broadcast to all devices in this LXI domain
lan.trigger[2].protocol=2
lan.trigger[2].connect()
-- associate the firing of the alarm to the generation of a LAN trigger
lan.trigger[2].stimulus = schedule.alarm[1].EVENT_ID
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