Safran VersaSync - Configuring a Havequick Input

On-Time Point Pulse Width: [ns] 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 alignment count is non-zero.
Pulse Width: [ns] Defines the pulse width. (For an application
example, see "Example: Configuring a 20 PPS Output" on page50.)
Alignment Count: [s] The alignment counter determines how often
(in seconds) the square wave will be aligned back to the 1PPS. Set-
ting zero will disable PPS alignment beyond the initial alignment.
Time Alignment: (Enabled/Disabled) This 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: Sets the period of the square wave (in ns, µs, ms, or s scale).
The wave’s frequency will display at the top of the window once
you have configured the output. The frequency is calculated
based on the Period and Period Correction settings.
Period Correction: Period correction allows for the generation of
more precise frequencies at the expense of additional period jitter. An
additional clock cycle is added for numerator periods every denom-
inator periods. Over a length of time, the true square wave period
comes to:
Period + (numerator/denominator)] * 5 ns
R7e-Initialize: Re-initializes square wave generation and aligns to
1PPS.
2.7.4.7 Configuring a HaveQuick Input
To configure a HaveQuick input:
1. Navigate to INTERFACES > REFERENCES: HQ Input 0 (or:
INTERFACES > OPTION CARDS: HQ Input 0). The Status window will
open, displaying information on the current Reference ID, input Valid-
ity, TODFormat, Time Scale, Offset, and TFOM. (For more inform-
ation on TFOM, see "Time Figure of Merit (TFOM)" on page225.)
2. Click Edit to open the Configuration window.
2.7 Configuring Inputs/Outputs
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