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The KSR command is a diagnostic aid used for servicing the spectrum analyzer.
The KSR command displays specific internal frequency control parameters in the upper left corner of the CRT
display. These parameters are the programmed values determined by the Controller Assembly, A15.
The following is a sample of what might appear when KSR is executed.
(3)
1
25
13
(4)
( 5 ) 15kwBer m!J
Line -1:
Displays the YIG-tuned oscillator (YTO) start frequency in GHz.
Line 2:
Displays the 2@/3pI loops frequency.
Line 3:
Displays the band number, M phase-lock-loop divide number, and N phase-lock-loop divide num-
ber.
Displays the M/N loop frequency.
Line 4:
Displays the phase-lock-loop 2 (PLL2) voltage-controlled oscillator (VCO) frequency.
Line 5:
Line 6:
Displays the phase-lock-loop 3 (PLL3) voltage-controlled oscillator (VCO) frequency.
In line 6, an asterisk (*) appears in front of the VCO frequency when the span width is
greater than the LO harmonic number times 100 kHz, or the span width is less than or
equal to the LO harmonic number times 5 MHz.
The asterisk indicates that the VCO frequency is not used to determine the 2121/3121 loop frequency
The functions of the KSR command and the @ [:::;Ll keys are identical.
NOTE
R
KSR
Diagnostics On
Programming 157
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