T/FSDS

Question 1

Time and Frequency Data is received via reference signals from three sources to synchronize the T/FSDS:

Answer 1

GPS in normal operation
External Clock Synchronization
Manual Synchronization using World Wide Voice (WWV)

Question 2

T/FSDS generates and distributes time and frequency signals to four locations:

Answer 2

Modified Miniature Receive Terminals (MMRTs)
VLF Transmit Terminal
VLF Preamp/Filter Control
SSPA/C

Question 3

What component of T/FSDS is synchronized with Naval Observatory?

Answer 3

GPS/Quartz Crystal Oscillator

Question 4

What is the function of the Generation Subassembly?

Answer 4

provides redundant core time and frequency signal outputs to the Distribution Subassembly

Question 5

Generation Subassembly contains two…

Answer 5

Tracking Oscillator Clock Quartz Modules (TOC-80QM)

Question 6

What is the function of the Power Conditioner?

Answer 6

provides voltage regulation and energy storage to allow T/FSDS to operate uninterrupted during momentary loss of primary aircraft power and voltage spikes that may occur during normal operation

Question 7

What is the function of the Distribution Subassembly?

Answer 7

accepts redundant core time and frequency signals from the Generation Subassembly;
produces mission equipment time and frequency signal outputs

Question 8

What are the output signals from the Distribution Subassembly?

Answer 8

5MHz to VLF Preamp and Filter Control in P30
STOD and 1pps to MMRTs 1, 2, 3 in E43
5MHz and 1ppm to VLF Transmit Terminal in P30
5MHz to SSPA/C