Operating instructions

[SENSe:]ADEMod - Subsystem R&S ESCI
1166.6004.12 6.128 E-1
! FM Deviation (maximum and minimum) for signal modulated with '0'-values only
! AM Modulation Depth for positive and negative burst ramp.
These values can be obtained by external computations on the frequency or amplitude versus time data.
For that purpose the R&S ESCI will deliver the following results:
! Demodulated FM signal (current values, averaged, maxhold, minhold selectable)
! Demodulated AM component of the signal (current values, averaged, maxhold, minhold selectable)
! FM Offset (current value or averaged selectable)
Therefore parameters to be set up on the analyzer are:
! types of demodulation to measure simultaneously (AM/FM)
! sample rate
! record length
! trigger source (free Run/external)
! pretrigger samples
! # of measurements to use for average/maxhold/minhold
Additionally for each demodulation type the required result values need to be configured. The R&S ESCI
is capable to perform two modulation types at a time with a maximum of 3 different result types per
demodulation. Possible selections for the result types are
! WRITeThe current measurement results will be obtained
! AVERageThe measurement results will be averaged over the given # of measurements
! MAXHoldThe maximum result values will be obtained over the given # of measurements
! MINHoldThe minimum result values will be obtained over the given # of measurements
The commands defined below will be used in the following way:
Setting up the instrument and querying the result list after synchronization to the end of measurement:
With this method the control computer can be used for other activities while the R&S ESCI is performing
the measurement.
Note: Analog demodulation is only available for screen A. Therefore the command sequence
"SENSe2..." is not available for the commands of the SENSe:ADEMod subsystem.
COMMAND PARAMETERS UNIT COMMENT
[SENSe<1|2>]
:ADEMod
:AF
:COUPling
:CENTer
:SPAN
:FULL
:STARt
:STOP
:BANDwidth
:DEModulation
:BWIDth
:DEModulation
:MTIMe
:RLENgth?
[:STATe]
:SET
AC | DC
<numeric_value>
<numeric_value>
--
<numeric_value>
<numeric_value>
<numeric_value>
<numeric_value>
<numeric_value>
<Boolean>
<numeric_value>,
<numeric_value>,
IMMediate | EXTernal,
POSitive | NEGative,
<numeric_value>,
<numeric_value>
HZ
HZ
--
HZ
HZ
HZ
HZ
S
HZ,
--,
--,
--,
--,
--
Option FM
Demodulator
query only