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FAST REMOTE OPERATION (KSS AND KST)
This section describes the execution time reduction for commonly used commands that involve sweeping, tuning,
or active functions (for example - TS, CF; or El).
NORMAL OPERATION
During normal operation, the analyzer repeats a specific cycle of operations each time it sweeps. If a single sweep
mode command (S2 or TS) is used, the following sequence of operations occurs once the trigger conditions are
met:
1.
Phase lock to the start frequency.
2.
Begin and complete sweep.
3.
Perform computations for the CRT annotations.
4.
Write annotations on the CRT
5.
Reset sweep ramp and phase lock to the start frequency.
The analyzer repeats this cycle each time a single sweep command is executed.
In most cases, the remote operation mode does not require operation 4, updating of CRT annotation; and until
another single sweep command is executed, operation 5 is not needed either. Therefore, eliminating operations 4
and 5 does not sacrifice any information or accuracy. Depending on the current instrument state, eliminating
operations 4 and 5 saves between 20 and several hundred milliseconds for each single sweep command execu-
tion. This is important, because the execution of subsequent analyzer commands must wait for the completion of
the sweep cycle. Reducing the required sweep time and eliminating unnecessary operations significantly reduces
the command execution time.
FAST OPERATION (KSS)
The KSS command saves execution time by eliminating operation 4, the internal CRT annotation routine, and
operation 5, the second phase lock. KSS is activated with a controller, not from the front panel, and remains in
effect until deactivated by IP LF, KSU, KST, RC, or a local command such as BASIC command lcl. If a single
sweep is executed when KSS is activated, only the first three operations of the sweep cycle are performed; the
to
analyzer is left tuned
the stop frequency. While KSS is activated, the analyzer is in the single sweep mode;
therefore, a new sweep does not begin until another single sweep command is given. When KSS is deactivated,
the analyzer returns to the sweep mode that was in effect when KSS was activated.
4 2 A p p e n d i x
Appendix E
APPENDIX E
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