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HNLOCK
Harmonic Lock
Item
INTEGER
The HNLOCK command prevents the analyzer from tuning with other than the specified LO harmonic. This
command also restricts the tuning range of the LO to 6.2 GHz.
If the harmonic specified with the HNLOCK command is not compatible with the current START and STOP
frequency settings, these settings are automatically changed. When this happens, the CENTER FREQUENCY
setting is retained, if possible (i.e., the START and STOP frequencies are set closer together). If the CENTER
FREQUENCY setting can not be retained, another external mixing band is selected that is compatible with the
specified harmonic. The HNLOCK command can not be used to switch between the internal and external mixer
bands.
If no harmonic number is specified with the HNLOCK command, the analyzer tunes with the current harmonic.
When executing a harmonic lock, use the following method to ensure the desired harmonic is selected:
1. Select desired harmonic by setting a start frequency within the desired band. (See Tuning Curves in Appendix
F for frequency range of each harmonic.)
2. Set analyzer to single sweep mode. Single sweep ensures the desired harmonic is selected when executing a
bank lock.
3. Execute KSt to lock the desired harmonic.
4. Set analyzer to continuous sweep mode.
5. Reset desired start and stop frequencies.
Remember, before you can change the frequency range to another harmonic, you must unlock the band with the
KSQ (harmonic unlock) command.
KSR (Diagnostics On) can be activated, at any time, to display the local oscillator harmonic number in the upper
left corner of the CRT display.
1 2 6 P r o g r a m m i n g
HNLOCK
Description/Default
Real number representing an LO harmonic.
integer
Range Restriction
1 - 6 4
I
I
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