Caution: NEVER install an option card from the back of the unit, ALWAYS from
the top. It is therefore necessary to remove the top cover of the main chassis (hous-
ing).
Input and outputs can be categorized by:
Communication direction:
Input
Output
Signal type:
Frequency: 1/5/10/[programmable]MHz
Wave form (square, sinus)
1PPS
TTS
CTCSS
Signal protocol:
ASCII time code
IRIG
STANAG
Have Quick
E1/T1 data
Telecom timing, etc.
Ethernet (NTP, PTP)
Time code I/O
Alarm out, etc.
Functionality:
Networking card (incl. NTP, PTP)
Time code I/O
Alarm output
Special functionality e.g., revertive selector, bidirectional communication
Connector type:
BNC
DB-9/25
Terminal block
1.5 Option Cards
CHAPTER 1 • SecureSync User Reference Guide Rev. 26
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