Instructions

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Although the filing system allows up to 999 .LOG files to be stored, the practical number may be
limited by the internal memory size (approximately 1.8GB). Where large files are being created,
care must be taken not to overflow the memory. Memory space can be restored by copying
files to a Flash drive or directly to a PC, and then deleting them on the instrument.
The instrument has the potential to log over very long periods. Where it is required to log for a
period close to or exceeding the battery life, the instrument must be operated from external AC
power.
In the event of the memory becoming full or the power being lost, the current logging file will be
automatically closed.
7.11.8 Viewing and Analyzing Logging Files
The instrument has no capability for viewing the contents of a logging file. Instead, the file must
be copied to a Windows based PC where the file can be viewed and analyzed using the PSA
Manager software - see section 6.1.11.
Log files have the extension .LOG and are located in the folder named LOGS. Up to 999
logging files can be stored within the memory of the instrument. Files can be transferred using
either a USB Flash drive, or by direct connection to the USB port of a PC.
See section 5 for an explanation of copying and transferring files.
7.12 Using Automatic Measurements
The Automatic Measurement function is only available when the upgrade option U02 is fitted
(see section 6). A description of the menu keys used to control the function is given in section
4.7.2.
When turned on, the automatic measurement function changes the sweep mode of the analyzer
so that 1081 points of data are collected per sweep instead of the normal 271. This, combined
with the calculation time, reduces the sweep update rate substantially.
The number of points displayed remains at 271, with each pixel showing the appropriate value
in each block of four as set by the detector mode. However, all 1081 points are used to
calculate the measurement result.
When automatic measurement is turned on, the standard moveable markers are disabled and
replaced by markers which are positioned by either the measurement setup or the
measurement result. The calculated results or setup parameters (as chosen with the Mode
key) are displayed within the area below the graticule normally used for marker readouts.
The measurement function can run continuously or as a single measurement, as set by the
Mode key. The measurement sweeps are controlled with the Run/Stop as normal.
Note that the choice of single or continuous within the Auto Measure function overrides the
setting within the Sweep Control menu, and will remain set when the function is turned off.
For all measurement types the user must start by setting the desired centre frequency for the
channel of interest and choosing a span appropriate for the bandwidth. These are set from the
normal Frequency/Span menus.
The RBW would normally be set to Auto, and typically the span would be set to be a sufficient
amount wider than the channel bandwidth(s) so as to fully display the skirts.
An excessively wide span would reduce accuracy because of the lower number of
measurement points. If the span is set below the necessary bandwidth, the result will be shown
as “Setup Error”.
Depending upon the signal type that is being measured it may be beneficial to set the trace
write mode to Average, or to Peak Hold.
7.12.1 Channel Power (CP)
This measures the total power, in dBm, within a channel of a user specified bandwidth at a user
specified centre frequency.