XLi Time & Frequency System 105
XLi-man, Issue 8, 6/17/2008, Rev. H
2
5
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SSSSSSSSSSSS SSSSSSSSSS SSSSSSS S SSS S SSSSS S
The following reference table identifies the indicators that correspond to each position in F73 mask
syntax. Use this table when entering or reviewing MASK settings. This table also provides the factory
default settings for a unit with one or two GPS receivers:
Note: Alarm Mask provides a setting for LED BLINK. This is not an alarm on or off, but whether the alarm
LED will blink or not. Also, the Rb Oscillator Alarm Enabled setting is available even if a Rubidium
oscillator is not present.
To change the Alarm Enabled setting for each indicator, enter to E (Enable), D (Disable), or “-”
(Unchanged) using this format:
F73<S>MASK<SEP><123456789ABCDEFGHIJ><CR>
For example, to enter new mask settings, enter:
F73 MASK DDE-EEEEEEEEEEDDDDD
XLi replies:
OK
To verify the changes, enter:
One GPS receiver Two GPS receivers
1 = PLL Synthesizer Alarm Enabled E E
2 = LPN PLL Alarm Enabled E E
3 = Primary Alarm Enabled E E
4 = Secondary Alarm Enabled D E
5 = IRIG Alarm Enabled D D
6 = Aux Ref Alarm Enabled D D
7 = Primary Power Alarm Enabled E E
8 = Secondary Power Alarm Enabled D D
9 = Rb Oscillator Alarm Enabled E E
A = DAC Alarm Enabled D D
B = First time lock Alarm Enabled E E
C = Time error Alarm Enabled E E
D = Time out Alarm Enabled E E
E = NTP Alarm Enabled (if NTP present) E E
F Future Use
G Future Use
H Future Use
I Future Use
J Future Use
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