Operating instructions

TRACe Subsystem R&S ESCI

1166.6004.12 6.230 E-1

TRACe<1|2>:IQ:SET <filter type>,<rbw>,<sample rate>,<trigger source>,<trigger slope>,

This command defines the settings of the analyzer hardware for the measurement of I/Q data.

This allows setting the bandwidth of the analog filters in front of the A/D converter as well as setting

the sample rate, trigger conditions and the record length.

Note: If this command is omitted, the current analyzer settings will be used for the corresponding

parameters.

Parameter:

<filter type>: NORMAL 'Selects the analog analyzer resolution filters as filter type. This is

currently the only available filter type.

<rbw>: Bandwidth of the analog filters in front of the A/D converter.

<sample rate>: Sampling rate for the data acquisition.

Value range: 15.625 kHz, 31.25 kHz, 62.5 kHz,

125 kHz, 250 kHz, 500 kHz,

1 MHz, 2 MHz, 4 MHz, 8 MHz, 16 MHz,

32 MHz for <filter type> = NORMal

<trigger mode>: Selection of the trigger source used for the measurement.

Values: IMMediate | EXTernal | IFPower | RFPower

Notes:

IFPower and RFPower are available as of model 03

of the detector board assembly.

RFPower requires the TV and RF Trigger option R&S FSP-B6.

After selecting IFPower and RFPower, the trigger threshold can be set with

command TRIG:LEV:IFP or TRIG:LEV:RFP.

<trigger slope>: Used trigger slope.

Values: POSitive (currently the only value supported)

<pretrigger samples>: Number of measurement values to be recorded before the trigger point.

Range: -16744447

(= -(2

-1-512k)) to 65023 (= 64*1024 – 512 - 1)

Note: Negative values correspond to a trigger delay.

For <trigger mode> = IMMediate the value must be 0.

<# of samples>: Number of measurement values to record.

Value range: 1 to 130560 (= 128*1024 – 512)