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Time Dissemination Service

Time Dissemination by Telephone(TEL-JJY)

Appendix

1. Loop back method which can be used in measuring of delay time
   Loop back circuit is realized by a hardware with the relay contact.
   Total delay measured by the system is the sum of the following:
a. Delay for the round trip
b. Instrumental delay of the transmission modem
c. Instrumental delay of the receiving modem
2. Communication flow with the exclusive receiver
   Standard connecting process is shown below.
Communication flow with the exclusive receiver
(Click the picture above to see larger picture)