Anritsu MS2840A - SMA;SMA?

Chapter
４
Native Device Message Details
4-263
4
Native Device Message Details
SMA/SMA?
Write and Query Trace Data (Trace A)
Function
This command writes and queries the trace data of Trace A. This
function targets negative detection trace data when the detection mode is
Positive & Negative (Normal mode).
Command
SMA wpoint,data
Query
SMA? start,number
Response
data1,data2,...
Parameter
wpoint
Specify the writing position as the number of
displayed points from the left edge of the screen.
Range 0 to 10, 20, 40, 50, 100, 200, 250, 400, 500,
1000, 2000, 5000, 10000, 30000 (MS269xA Only)
data
Level data to be written
Resolution 0.001 dB units (At log scale)
{ Voltage value (V)/reference level (V) }
×
10000
(At linear scale)
start
Specify the loading start position as the number
of displayed points from the left edge of the
screen.
Range 0 to 10, 20, 40, 50, 100, 200, 250, 400, 500,
1000, 2000, 5000, 10000, 30000 (MS269xA Only)
number
Number of items of data to be loaded
Range 1 to 11, 21, 41, 51, 101, 201, 251, 401, 501,
1001, 2001, 5001, 10001, 30001 (MS269xA Only)
Details
This command is not available during the Spectrum Emission Mask
measurement.
Example of Use
To set –20 dBm at the 1
st
point and –21 dBm at the 2
nd
point.
SMA 1,-20000
SMA 2,-21000
SMA? 1,2
> -20000,-21000