NARDA PMM 7010 Series, User Manual

Page: 65 / 76

Remote control 7-15
(Continued)
SSFD FreqStart;
FreqStop;
FreqStep;
Detector;
HoldTime; Rbw;
MinAtt; Preamp;
Preselector;
ScanHoldT
• Preamp. This Parameter switches the Preamplifier On or Off according to
its content as follows.
o
On . It turns ON the preamplifiaer.
o
Off. It turns Off the preamplifiaer.
•
Preselector. This Parameter switches the Preselector On or Off according
to its content as follows.
o
On . It turns ON the Preselector.
o
Off. It turns Off the Preselector.
•
ScanHoldT = Hold Time used in Smart Mode when tuning for Peak for each
step and it is expressed in ms. Note that this is used only in case of Smart
Mode and not in standard sweep. This parameters is not compulsory and
can be omitted if not required. I case it is not present, minimum time is
taken.
This command triggers a free sweep (no automatic items are selected) based on the
provided parameters. After this command has been received, all parameters issued
in the command itself are checked out and, if coherent, a sweep starts otherwise the
related error is notified and the sweep is not triggered.
Moreover, using the Frequency-Scan-Tab, the user has the capability of tuning only
those frequencies which are suspected skipping thus the remainder. Hence, saving
a lot of time.
After the command has been received, the 7010 replies by sending a string which
reflects the status of parameter check as follows:
• SFD=OK <RC><LF> No error in parameters and sweep started.
•
SFD=ERR 1 <RC><LF> An Error was found in start or stop frequencies.
Errors can be one of the following:
o
Start Frequency lower than minimum allowed frequency
o
Stop Frequency higher than maximun allowed frequency
o
Start Frequency higher than Stop Frequency
• SFD=ERR 2 <RC><LF> An Error was found in step frequency. Step is either
o
Too small.
o
Is equal to zero (use of Frequency-Scan-Tab) but there are less than two
frequencies in the table
•
SFD=ERR 3 <RC><LF> An Error was found in detector . Errors can be one of
the following:
o
Invalid Detector or no detector found. Detectors must be indicated by
‘P’,’Q’,’R’,’A’,’N’ and ‘S ’ only
o
Smart Mode selected but no active limit
o
Smart Mode selected but no alternative detector
o
Smart Mode selected but more than two alternative detector indicated
•
SFD=ERR 4 <RC><LF> An Error was found in HoldTime value. HoldTime is
either too big (>10s) or negative.
• SFD=ERR 5 <RC><LF> An Error was found in RBW . Errors can be one of the
following:
o
Unsuitable RBW for the active unit (for instance 200HZ Rbw while
Downconverter is active)
o
Unsuitable RBW for the detector previously selected (for instance 100kHZ
Rbw and QuasiPeak selected).
•
SFD=ERR 6 <RC><LF> An Error was found in MinAtt value. Errors can be one
of the following:
o
MinAtt value is negative
o
MinAtt value is higher than maximum available attenuation
o
MinAtt value is not in step of 5
• SFD=ERR 7 <RC><LF> An Error was found in Preamp string. Preamp string
can be either ON or OFF only. String is not case sensitive.
• SFD=ERR 8 <RC><LF> An Error was found in Preselector string. Preselector
string can be either ON or OFF only. String is not case sensitive.