Spectracom SecureSync User Manual

Leap Second Month:
00=None scheduled
03=March
06=June
09=September
0C=December
Leap Second Zone:
0=Out of zone
1=Within zone
Zone is 15 minutes before to 15 minutes after a leap second.
GPS Week:
Up to FFFF
GPS Second:
Second of week 000000 up to 093A7F (604799 decimal)
GPS to UTC offset:
2’s complement binary signed integer, seconds
Checksum:
Sum of all bytes up to and including the checksum (sum includes the AAAA start identifier
but excludes the 9999 end identifier)
5.4.14.3 Format BBC-03 PSTN
The third format is a string ASCII characters and is sent on a received character.
The message should be advanced by an appropriate number such that the stop bit of each
<CR> occurs at the start of the next second. For example, at 300 baud, 8 data bits, 1 stop bit,
and no parity, each byte takes 10/300s=33ms, so the <CR> byte should be advanced by
33ms in order for the <CR>’s stop bit to line up with the start of the next second.
Time information is available in UTC format or UK TOD format.
SecureSync User Reference Guide 537
APPENDIX

Spectracom SecureSync Specifications

General

Model	SecureSync
Time Reference	GPS, GLONASS, BeiDou, Galileo, IRIG, NTP, PTP, 1PPS
Disciplines	GNSS, IRIG, PTP, NTP, SyncE
Inputs	GPS, GLONASS, BeiDou, Galileo, IRIG, NTP, PTP, 1PPS
Outputs	NTP, PTP, 1PPS, IRIG
Protocols	PTP, NTP, SNMP, SSH, HTTPS
Form Factor	1U Rack-mount
Redundancy	Optional redundant power supply
Security Features	Password protection, access control lists, SSH, HTTPS, SNMPv3, NTP authentication, PTP authentication
Power Supply	100-240 VAC, 50-60 Hz
Operating Temperature	0°C to +50°C
Dimensions	44.45 mm (H) x 482.6 mm (W)