DOC 4380A
4380A O & M Manual
27
098-00723-000– Jul 2017 Revision 4.0 SyncSystem 4380A O&M Manual
signal missing 10MHz reference signal is not present. Do NOT select the
reference type as External.
cannot communicate 10MHz reference signal is present, but the system is
unable to communicate with the 5071A
locked 10MHz reference signal is present and the system is able
to communicate with the 5071A
not monitored 10MHz reference signal is present. The system will not
attempt to communicate with the external reference.
Make sure the USB-to-Serial Converter (94001-5071A) is installed on one of the two USB ports when the
system is powered on. If not, power the system down, plug the cable in and re-apply power. The
USB/Serial Cables are programmed to communicate with an external reference (94001-5071A) or to
provide users access to the command port (94000-115200). These cables are NOT interchangeable.
To set the type of reference, use the reference_type command. If users are operating with a Microsemi
5071A and they will set the system up so the 4380A is communicating with the 5071A, select hp5071A, if
not select cesium.
4380A>reference_type hp5071a
[OK] 2015-08-05T16:51:17Z
If the system is unable to communicate with the external reference and the reference_type is hp5071A, the
Alarm light will come on and the Sync light will go out and remain this way after you switch to the external
reference. Make sure that you select the proper reference_type before switching to external.
Si le système ne peut pas communiquer avec la référence externe et le reference_type est hp5071A, la
lumière d'alarme avancera et la lumière de serrure d'oscillateur s'éteindra et rester de cette façon après toi
commutez à la référence externe. Assurez-vous que vous choisissez le reference_type approprié avant le
changement à externe.
To set the reference to external, use the reference command via the command port.
4380A>reference external
[OK] 2015-08-05T17:19:32Z
The Alarm light will come on and the Sync light will go out for a few seconds when you switch references.
The system should clear all alarm indications within a few seconds.
To verify the settings use the settings reference command to check the current settings.
4380A>settings reference
[external]
[type] hp5071A
[source] internal
[steering]
[source] gps
[timescale]
[kas2]
[avgfiltermax] 0
[tsepoch] 0
[tsfiltermax] 2
[tsfilterref] N/A
[tsinterval] 3600
[tstimeconstant] 10800
[OK] 2015-08-05T17:22:04Z
If these settings are correct, type save to save the proper reference and reference type in the default user
configuration file on the system to ensure the system starts up properly after a reboot or power cycle.
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