Instructions

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Channel Marker files are created using PSA Manager software. This is described further in
Appendix A (section 16).
7.8 The Logging Function
The Logging function is only available when the upgrade option U01 is fitted (see section 6).
A description of the menu keys used to control the function is given in section 4.8.1.
The logging function saves results into log files within the memory of the instrument. The type
of result saved can be selected as Centre Level (logs only the amplitude at the centre
frequency), Peak Level (logs the frequency and amplitude of the highest peak in every sweep),
Full Trace (logs the whole trace) or Screen Image (logs the whole screen as a bit-map image).
The saving of an entry into the file can be after every
sweep (continuous) or in response to a Timer, a key
press (manual trigger), the external trigger input, or
the Limits function.
Each entry within the file includes the time of the entry
as read from the instrument’s real time clock. Up to
25,000 entries can be saved within a single file with
the exception of Screen Image logging where the
entries are limited to 2,500. The saving of an entry
takes a finite length of time varying from 0.1 seconds (centre amplitude or peak value) up to 1.5
seconds (screen image). Entries are only saved after the sweep has been completed, and the
sweep cannot re-start until the entry has been saved.
Note that, when a logging file is “enabled”, the sweep mode is automatically set to Repeat and
the sweep trigger is set to Free Run. No changes can be made to the set-up of the analyser
while logging is in progress.
7.8.1 The Logging Control Menu
Selecting Logging Control from the Logging sub-group menu (see section 4.8.1) opens a new
control screen as shown opposite.
The type of data to be logged, the trigger type, and the timer interval (if used) must be set prior
to entering Logging Control. This information is shown within the area above the keys.
Similarly the spectrum analyzer state (frequency span, level etc). must also have been set-up in
advance.
Once logging has commenced it is not possible to make any changes to the instrument’s set-up
without closing the logging file. It is also not possible to turn the instrument power to Off without
closing the file first.
Change Name: the name of the logging file that will be created is displayed at the top of the
menu area. The file name is an auto-incrementing numeric of the default file name (shown in
green). Pressing Change Name opens an alpha-numeric keypad from which a user-chosen
name of up to 8 characters can be entered.
Change Default: enables the default file name that will be automatically allocated to the next
logging file to be changed. Standard default file name rules apply - see section 5.1.1.1
Enable Logging: commences the opening of a logging file under the currently displayed name.
An information message is displayed and logging is actually enabled after confirming with the
Status hard key.
Pause/Enable: causes new entries into the current logging file to be suspended and re-started.
However it is not possible to exit from the logging control menu without closing the current file.
Close File: closes and saves the current logging file. Once closed the file cannot be re-opened
(although it can be renamed or deleted). The Log File name changes to the next default name
ready for the next logging file to be enabled.