097-10603-01 Rev. A – November 2004 X72 Desiger’s Reference and User’s Guide 39
Design Integration Considerations
Modifiable Unit Settings
Modifiable Unit Settings
You can modify some features of the X72 operation are modifiable by the customer.
Refer to the X72 Developer’s Kit document (DK/106031) for information on how to
use the SSIP to use these functions.
Note: You cannot alter the default power up conditions.
Table 2-1. Hardware Selectable Items
Item Action
FXO Enable Turn the XO frequency output on or off
1PPS Output Enable Turn 1PPS output on or off
ACMOS Output Enable Turn the ACMOS output on or off
Sine Output Enable Turn the sine outputs on or off
Table 2-2. Software Selectable Items
Item Action
Analog Frequency Adjust Enable or disable frequency control function
Adjust Frequency
1
Note:
1 Minimum frequency change is 2xE
–12
(or “f.2”). Values less than this are ignored. Maximum frequency
charge, is not constrained. Setting the frequency outside of its operating limits may render the unit
non-functional.
Adjust output frequency from the factory preset
value
HELP Displays the HELP menu
Change ACMOS output
frequency
Defining “N” sets the ACMOS output frequency
divider
View Control Register Displays current settings of the control register
Set Control Register Enable or disable outputs
View Unit Information Displays X72 information stored in firmware
View Health Monitor Data Displays history file of error or fault information
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