Code Tone Freq. Code Tone Freq. Code Tone Freq.
YB 88.5 4A 141.3 M4 225.7
ZZ 91.5 4B 146.2 9Z 229.1
ZA 94.8 5Z 151.4 M5 233.6
ZB 97.4 5A 156.7 M6 241.8
1Z 100.0 5B 162.2 M7 250.3
1A 103.5 6Z 167.9 0Z 254.1
Table 5-13:
Data Clock Signals
Output Duty Cycle
9.6 kHz, 18.0 kHz, 64.0 kHz 50% ±2%
17 2/3 Hz 888 microsecond pulse width
26 2/3 Hz 25% low, 75% high
33 1/3 Hz 208 microsecond pulse width
Table 5-14:
1PPS Duty Cycle
Output Duty Cycle
1PPS 20% ±5%
5.2.4 Telecom Option Cards
This section contains technical information and Web UI procedures relevant to SecureSync
option cards commonly used in the telecommunications industry.
5.2.4.1 T1/E1 Out [1204-09, -0A]
The E1/T1 option card provide 1.544MHz or 2.048MHz and E1 or T1 data outputs for the
SecureSync platform. SecureSync meets G.812 TypeI when installed with a Rubidium option,
and G.811 when installed with a Rubidium option and synchronized with GNSS.
Note: Rubidium oscillators are recommended for the E1/T1 option card.
388 SecureSync User Reference Guide
APPENDIX