Remote control 14-31
14.6.5
Procedure to
read a measure
stored by the
PMM 9010
1. Send the command #?FSF n * .
2. Wait for the size of array
3. Wait for the first 1024 bytes in order to get both main and sweeps header
4. Read the relevant data concerning Start, Stop of full sweep as well as single
sub-sweeps if they are more than one.
5. Go to the offset OffRec1 (OffRec1 *2) in the received buffer and read all the
LenRec1 levels.
6. If the number of Sub-Sweeps is 2, go to the offset OffRec2 in the received
buffer and read all the LenRec2 levels.
7. Next Address is (OffRec2+ LenRec1)*2
14.7 Special
notes for 9010F
Programming differences between 9010 and 9010 Fast.
The communication protocol for PMM 9010F model is very similar to the one
adopted for the 9010/03/30/60P family but with some improvements and extensions.
General
The query command #?IDN* sends back a string containing “9010F…..” and
information about release as usual.
Also the ?DPY command, to download the bitmap image of the display, is slightly
different.
Manual Mode
• The Demodulator is not activated. The reply is always DMD=OFF and the
command should not be never sent even if OFF.
Analyzer Mode
• When the internal generator (TG) is in tracking mode, the unit is swept step
by step
• Be aware! To achieve the best performance, transfer data and process
time must be fast enough to be congruent with 9010F.
As the sweep data are contained in the header, the fact that the step used is
different from the 9010 does not affect the interpretation of the data that remains the
same.
Sweep Mode
• The internal generator (TG) can only be activated at a fixed frequency and
no tracking.
• With SSFD command the step is always ignored and forced to AUTO (when
step is > 0)
• Once the sweep is started, the 9010 sends back an array of 32 bytes
where the first 4 bytes are a Little Endian 32 bit floating point figure
representing the step of sweep. Then the value of each detector chosen
in the command step by step will follow. Each detector is made of a Little
Endian 16 bit integer which represents the value of that particularly tuned
frequency. The value is expressed in hundredth of dBm. Therefore, for each
step, there will be a packet of n detectors (n *2 bytes).
• The Smart Detector can not be used.
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