DOC 6501_Release V
ATS-6501 Users Guide
57
Indicator Status
Off GPS receiver is not tracking at least four GPS satellites
Position coordinates were entered incorrectly (Manual Mode).
External Reference: This indicator will go out when the 10Mhz is lost and will
come back on after the 10Mhz has been restored.
Green The GPS receiver is in fine time mode (< 50 ns) and is tracking at least 4
satellites.
Red POST Only.
Table 4 GPS Tracking Indicator
3.1.4 NTP Locked Indicator
A Network Time Protocol (NTP) server is provided for the dissemination of time to other devices
on the network. When this indicator is green the system has accurately set it’s time, the internal
NTP Server is operating, and the ATS-6501 is capable of accurately synchronizing any of the
nodes on your network that are pointing to this device as the NTP Server. If the indicator is off,
the NTP Server is not meeting specifications.
Indicator Status
Off NTP server is not providing time that meets specification.
Green NTP server is providing time that meets specification based on the GPS
Constellation or the user selected time source (force_time)
Red POST only.
Table 5 NTP Locked Indicator
Note: This indicator will go out when the unit is restarted or rebooted, this is normal.
3.1.5. Outputs Enabled Indicator
This indicator provides the operator a visual indication regarding the output modules installed in
the rear card slots on the unit. No user set up is required and the system will automatically
configure the internal monitoring based on the card installed in each slot. To determine which
module(s) is causing the alarm use the status health:output_modules command.
Indicator Status
Off Outputs not yet enabled
Green Outputs are enabled and reporting their status is good.
Red POST Only
Table 6 Outputs Enabled Indicator
3.1.6. KEY ACTIVE Indicator (SAASM)
This indicator provides the operator a visual indication regarding the status of the encryption keys
in the SAASM GPS receiver.
Indicator Status
Off No keys are loaded
Green Solid - Receiver keys are active
1 Hz Blink Rate – Key data received but not valid
5 Hz Blink Rate – Unknown state
Table 7 Key Indicator
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