R&S ESCI Receiver – SWEEP Key
1166.6004.12 4.49 E-2
Step Size - Entry of step size
In the case of linear frequency increments, step widths between 1 Hz and the
maximum R&S ESCI frequency can be set. When a step size greater than
the scan range is entered (from start to stop), R&S ESCI performs a
measurement at the start and stop frequency.
With logarithmic frequency increments, values between 0.1% and 100% can
be set with steps of ½/3/5.
With STEP AUTO selected, the step size cannot be changed because it is
automatically set with respect to the IF bandwidth.
IEC/IEEE-bus command SCAN1:STEP 4 kHz
RES BW - Entry of IF bandwidth
In the case of quasi-peak weighting, usually a fixed bandwidth is set which
cannot be changed (CISPR).
However, the coupling of the IF bandwidth to the frequency range can be
cancelled using softkey QP RBW UNCOUPLED in the MEAS DETECTOR
menu.
IEC/IEEE-bus command SCAN1:BAND:RES 9 kHz
Meas Time - Entry of measurement time
The measurement time can be set between 100 µs and 100 s separately for
each subrange. In the case of quasi-peak weighting, the minimum is 1 ms.
The measurement time can be set independently for each scan range.
IEC/IEEE-bus command SCAN1:TIME 1ms
Auto Ranging - Activates the autorange function
ON R&S ESCI automatically sets the input attenuation as a function of
the signal level.
Caution:
If 0 dB RF attenuation is used with autoranging, care must be
taken that the permissible signal level at the RF input is not
exceeded.
Exceeding this level would damage the input mixer.
The 0 dB attenuation should under no circumstances be used
when RFI voltage measurements are performed with the aid
of artificial networks as in this case very high pulses occur
during phase switching.
OFF The input attenuation setting of the scan table is used.
IEC/IEEE-bus command SCAN1:INP:ATT:AUTO OFF
RF Atten - Entry of a fixed RF attenuation
The RF attenuation can be set separately for each subrange
IEC/IEEE-bus command SCAN1:INP:ATT:AUTO OFF
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