Instructions

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4.5.6 Level/Limits > Limits
Limit lines, limit patterns and limits comparison functions are only available when Option
U02 is installed. Limits can be simple straight lines or complex patterns of level against
frequency. Up to two limits can be used together - Limit 1 is red, Limit 2 is blue. A limits
comparator compares the signal with the limits and can create conditional actions.
Set Limits opens a new control menu which enables one or two limits to be set using keys
as follows: Limit1/Limit2 selects which limit is to be set-up or turned on or off.
Set Line opens a numeric or Tab/Jog screen from which a fixed level can be set in dBm or
dBuV. Select Pattern opens a file recall screen for limit pattern tables created in PSA-Manager.
Limit On/Off sets the currently selected limit (1 or 2) to be turned on or off.
Limit Condition opens pop-up menu which defines how the comparison between the signal
and the limits will be made. Where two markers are displayed, comparison only takes place
between the markers. If not, the whole trace is compared.
Above/Below intended for single limits, action will be created if the signal goes above/below the limit.
Inside/Outside intended for dual limits, action will be created if the signal falls between (inside) the two
limits or goes outside of either.
Limit Action opens pop-up menu which defines the action that will take place when the limit
condition is met. This can be an audible beep, a pulse from the trigger socket, or both.
Further actions of Sweep Triggering or Data Logging can be created from the respective
function menus. The action is created at the end of the sweep.
Limit Offset opens a new control screen from which a limit can be offset from its initial
values. This is particularly useful for limit patterns which would otherwise have to be
recreated.
Limit Fix/Unfix fixes the limit pattern on the screen so that it will not change when the
centre frequency is changed. A message is displayed within the graticule area. This
allows a pattern to be used for alternative\n frequency points. Unfix recalculates the
pattern for the current frequency range and level..
Channel Markers are a special case of a limit pattern file which create only vertical lines at frequency
points defined in the file. Channel marker files are created within PSA Manager and have files names
starting with a $ symbol.
4.6 Traces/Markers
4.6.1 Traces/Markers > Traces Control
Controls the display of the three traces: Live (green), View (white), and Reference
(purple). Also controls the creation of the View trace.
View copies the current Live trace to the View trace, and turns the View trace on if it
was off.
Swap halts the Live trace and places the View trace in front of the Live trace.
Measurement markers then operate on the View trace. Pressing the key again, or
re-starting the Live trace with the Run key will swap the traces back.
View On/Off toggles the View trace on or off without creating
a new View trace. Ref On/Off toggles the Reference trace on
or off. Live On/Off toggles the Live trace on or off. In Dual
Trace mode , both traces are toggled together.
4.6.2 Traces/Markers > Trace Mode
Provides control of the way in which the sweep is written to the Live trace.
Limits
Set
Limits
Limit
Condition
Limit
Action
Traces
Control
View
Off/On
Trace
Mode
Limit
Offset
View
Swap
Ref
Off/On
Live
Off/On
Limit
Fix/Unfix