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Revision 10 10-9 450-SNUG
Applicable Event,
Service or Resource
Table 10-5. SN Scheduling Event Time Ground Rules
Ground Rules (note 8)
Event Duration cannot be less than one minute
Duration cannot be more than 24 hours
All services in an event are scheduled on the same TDRS and the TDRS must be used continuously from
the beginning of the event to the end of the event. There can be no time period within the event in which a
service is not scheduled.
Single Access (SA)
services and event
Except for SSAR combining services, all SA services in an event are scheduled on the same SA antenna
SSAR combining services actually use both SA antennas, but message formats will show that SA1 is used.
All other SA services in an event containing a SSAR combining services must use SA1.
SA Antenna A minimum of 120 seconds is required between consecutive uses of the SA antenna (note 2)
MAF or SMAF service A minimum of 30 seconds is required between MAF services on the same TDRS (F3 – F7) but in different
events
A minimum of 30 seconds is required between SMAF services on the same TDRS (F8 – F10 and K, L, M)
but in different events
MAR or SMAR Link A minimum of 30 seconds is required between uses of the same MAR link on the same TDRS (F3 – F7) but
in different events
A minimum of 30 seconds is required between uses of same SMAR link on the same TDRS (F8 – F10 and
K, L, M) but in different events
EET equipment A minimum of 3 minutes and 30 seconds is required between uses of S-band EET for the same TDRS
A minimum of 3 minutes and 30 seconds is required between uses of Ku-band EET for the same TDRS
User Interface Channels A minimum of 20 seconds is required between uses of the same user interface channel (note 4, note 5)
Any service A minimum of 15 seconds is required between services of the same type within an event