NARDA PMM ER9000, User Manual

Page: 79 / 106

Remote control 7-13
SCFE n, name This setting command is used for saving the conversion factor (made by SCFW) .
The command is made of the string:
•
FCE (the command itself),
•
n is the index and should be 0 (other index are ignored because into
memory can be saved one index only).
•
name which is a string representing the name of it
This command is intended for creating a conversion factor into PMMER9000. For
further information see command
SCFW ..
When the command is received the conversion factor is checked and, if data
(frequency and level) are coherent, the command is granted by replying
SCFW =OK
otherwise the replay is SCFW =SERR
Example: #SCFE 0,Probe* checks the data previously loaded by SCFW commands,
names it as “Probe ” and activates it.
SCFW n,freq;lev This setting command is used for creating a conversion factor frequency by
frequency. It consists of three fields as follows:
•
n is the index of frequency being written and it should range from 0 to 499
•
freq is the frequency, expressed in Hz (exponential notation allowed), being
written
•
lev is the conversion factor and is expressed in dB
The procedure to creating a conversion factor on PMMER9000 is the following:
•
Send as many commands as the frequency points of limit are in upwards order.
•
Terminate (and make it active) by sending the command SFCE
Here is an example how to make a custom correction factor on PMMER9000:
•
#SCFW 0, 150e3; -1 * Send the first line 150kHz -1 dB
•
# SCFW 1, 500e3; 0 * Send the second line 500kHz 0 dB
•
# SCFW 2, 5e6; 1.2 * Send the third line 5MHz +1.2 dB
•
# SCFW 3, 50e6; 1.1 * Send the fourth line 50MHz +1.1 dB
•
# SCFW 4, 300e6; 1 * Send the fifth line 1 dB
•
#SCFE 0,Probe* Save it permanently as #0 into ER9000 and name it as
“PROBE”
Note that all the higher indexes in the conversion factor are cleared. Therefore, a
conversion factor must be made upwards otherwise all points, having a higher index
previously written, are cleared.
It is
responsibility of the user to make sure the data sent are correct and coherent.
The reply is
SCFW =OK which acknowledges the command has been granted or
LCFW =SERR if the command has been ignored.