Keysight E6610A, Руководство пользователя и программирования

Страница: 93 / 108

12 SCPI Command Reference
Keysight E6610A User and Programming Guide 93
waveforms, choose OFDM. For uplink waveforms, choose
SCFDMA.
SENSe<1|2>:CPRI:CAPTure:STATe ON|
[OFF]|1|0 This command enables or disables the data
capture for the selected CPRI RX input. Default
state is OFF. The command does not initiate a
capture, but it enables the channel to make it
ready for capture. To initiate a capture use the
INITIATE:CAPTURE command which will capture
data for all channels currently enabled
simultaneously, or use one of the
MEASURE commands.
SENSe<1|2>:CPRI:CAPTure:STATe? Queries the enable state of the selected CPRI RX input.
Result is 0 (off) or 1 (on).
TRACE Subsystem Commands
Command Description
TRACe<1|2>:ACP This command will read the plotfile data from the last ACP
measurement performed on the selected RF RX input and
return the results as text.
The data is a comma delimited list of frequency and power
level values, for example:
2320.040, -23.30, 2320.100,-23.47, 2320.160,-23.46, etc.
The frequencies are in MHz and the power levels are in
dBm.
TRACe<1|2>:SEMask This command will read the plotfile data from the last SEM
measurement performed on the selected RF RX input and
return the results as text.
The data is a comma delimited list of frequency, measured
emission level and mask level values, for example :
2320.040, -23.30, -15.00, 2320.100,-23.47, -15.00,
2320.160,-23.46, -15.00, etc.
The frequencies are in MHz and the power and mask levels
are in dBm.
TRACe<1|2>:RADio:EVM This command will read the plotfile data from the last EVM
measurement performed on the selected RF RX input and
return the results as text.
The data is written as a comma delimited list of I and Q
values. For example :
99, 286, -521, 288, 503, 507, 97, 116, etc.
The IQ data has been scaled by 1000 to minimize the
amount of data transferred. To plot an EVM constellation
from this data, note that the first data point is I, the second
data point is Q. Divide the values by 1000 and plot on an X-Y
scatter chart.