HP 8360, User Handbook Manual

Page: 79 / 508

Using the Tracking
Feature
Peaking
Peaking is the function that aligns the output filter (YTM) so that
its is centered on the RF output, in CW or manual-sweep
mode. Use peaking to obtain the maximum available power and
spectral purity, and best pulse envelopes, at any given frequency
above 2.35 (or 2 when 2 is the minimum frequency
specified). The YTM is inactive for the low band frequencies
(10 MHz to 2.35
To peak at the present CW frequency:
Press ( U S E R ) .
Select Tracking Menu Peak RF Once.
This causes an instantaneous execution of the peaking function. This
is a one-time implementation of the peaking, where the function is
turned on and then turned off.
To peak at the present CW frequency, and continue to peak at new
frequencies as they are entered:
Press ( U S E R ) .
Select Tracking Menu Peak RF Always.
If “peak always” is on (denoted by an asterisk next to the key
label) for an extended period of time, the peaking function will
automatically repeak every seven minutes.
Tracking
Auto track is a more extensive version of peaking. It causes all of
the YTM tracking calibration constants to be aligned and requires
approximately 40 to 90 seconds to complete. Tracking is performed
from 2.35 (or 2.0 to the end of the specified frequency
range.
Note If the synthesizer does not have a step attenuator, terminate the
RF OUTPUT with a good
impedance match such as a 10
attenuator or a power sensor to prevent mistracking.
To enhance the power output and spectral purity of swept
modes, and to improve tracking performance (especially in harsh
environments having wide temperature variations):
Press
Select Tracking
Menu
Auto Track
Getting Started Advanced 1-49