158 XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
SSSSSSSSSSSS SSSSSSSSSS SSSSSSS S SSS S SSSSS S
1
where:
For example to make it a primary reference source, enter:
F119 B1 C PRI<CR><LF>
XLi responds:
OK<CR><LF>
F120 - N.1 Frequency Synthesizer
Use F120 to view the status and configuration of the N.1 Frequency Synthesizer (87-8022) (page 173)
and to change the frequency of its outputs.
The N.1 Frequency Synthesizer card’s four independently programmable outputs generate frequencies
from 1 PPS to 50 MPPS, with a tuning resolution of 1 PPS.
Keypad
Using the front panel keypad, enter F120 (ENTER, 120, ENTER).
Continue pressing ENTER to step through the following displays. (Use the up/down arrow buttons to
select options):
• N.1 FREQ SYN AVAILABILITY - OPTION BAY # (Select from 1-10, or NOT AVAILABLE)
• N.1 PART NUMBER
• N.1 FPGA NUMBER
• N.1 PLL (LOCKED/UNLOCKED)
• OUTPUT PORT 1 (Enter a value from 1 Hz to 50,000,000 Hz)
• OUTPUT PORT 2 (Enter a value from 1 Hz to 50,000,000 Hz)
• OUTPUT PORT 3 (Enter a value from 1 Hz to 50,000,000 Hz)
• OUTPUT PORT 4 (Enter a value from 1 Hz to 50,000,000 Hz)
• SAVE CHANGES? (Select from YES or NO and press ENTER)
F = ASCII character F.
119 = function number.
<S> = ASCII space character.
B = ASCII letter to denote Option Bay number follows
<N> = Option Bay Number, 1 through 10.
<SEP> = one or more separator characters; either space, comma or tab.
C = ASCII letter denotes reference configuration to follow.
<CONFIG> = Reference Source Configuration: PRI, SEC or STBY
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