Spectracom SecureSync 1200 - 5.2.3.7 Simulcast (CTCSS;Data Clock) [1204-14]

Signature Control—Controls when the output will be present. See also: "Signature Con
trol" on page136.
Edge—Used to determine if the on-time point of the output is the rising or falling edge of
the signal.
Offset—Accounts for cable delays and other latencies, entered in nanoseconds.
Pulse Width—Defines the pulse width of the output (entered in nanoseconds).
On-Time Point Pulse Width—The on-time point pulse width is the pulse width of the first
square wave pulse aligned to the 1PPS On-Time Point. This is only active when the align
ment count is non-zero. (Entered in nanoseconds).
Alignment Count(s)—The alignment counter determines how often (in seconds) the
square wave will be aligned back to the 1PPS. Setting zero will disable PPS alignment
beyond the initial alignment.
Time Alignment—(Enabled/Disabled) The time alignment enable changes the function of
the alignment counter to align the square wave whenever the current time’s seconds
value is a multiple of the alignment count. For example: If time alignment is enabled and
alignment count is set to 15 seconds, the square wave will be aligned to the 1PPS when
the seconds value on the time display equals 00, 15, 30, 45.
Period Correction— Period correction allows for the generation of more precise fre
quencies at the expense of additional period jitter. An additional clock cycle is added
for numerator periods every denominator periods. Over a length of time, the true
square wave period comes to:
Period + (numerator/denominator)] * 5 nsec
Period—Sets the period of the square wave (in ns or us scale).
The wave’s frequency will display at the top of the window once you have con
figured the output. The frequency is calculated based on the Period and Period
Correction settings.
5.2.3.7 Simulcast (CTCSS/Data Clock) [1204-14]
The Simulcast CTCSS/Data Sync/Data Clock Option Card provides CTCSS, data clock, and
alarm outputs through relays for the SecureSync platform through one DB-9 and one RJ-12 con
nector. The maximum number of cards installed is six (6).
380 SecureSync User Reference Guide
APPENDIX