R&S ESR Series, Руководство пользователя

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Remote Control
R&S
®
ESR
891 User Manual 1175.7068.02 ─ 12
<TriggerSlope> POSitive | NEGative
Used trigger slope.
*RST:
POS
<PretriggerSamp> Defines the trigger offset in terms of pretrigger samples. Nega-
tive values correspond to a trigger delay.
This value also defines the interval between the trigger signal
and the gate edge in samples.
Range:
RF input without gating: 0 to (200 MS - 1)
RF input with gating: 0 to [(200 MS * SR/128 MHz)-1]
Range:
0 to (MaxPreTriggerSamples * 128 MHz/sample
rate).
*RST: 0
<NumberSamples> Number of measurement values to record (including the pretrig-
ger samples).
Range:
1 ... 209715200(= 200*1024*1024);
*RST: 128
Example: TRAC:IQ:SET NORM,10 MHz,32 MHz,EXT,POS,0,2048
Reads 2048 I/Q-values starting at the trigger point.
sample rate = 32 MHz
trigger = External
slope = Positive
TRAC:IQ:SET NORM,10 MHz,4 MHz,EXT,POS,1024,512
Reads 512 I/Q-values from 1024 measurement points before the
trigger point.
sample rate = 4 MHz
trigger = External
slope = Positive
Manual operation: See "Record Length" on page 460
TRACe<n>:IQ:SRATe <SampleRate>
This command sets the final user sample rate for the acquired I/Q data. Thus, the sam-
ple rate can be modified without affecting the other settings.
Note : The smaller the user sample rate, the smaller the usable I/Q bandwidth, see
TRACe<n>:IQ:BWIDth
on page 889.
Suffix:
<n>
.
irrelevant
Example: TRAC:IQ:SRAT 4 MHZ
Manual operation: See "Sample Rate" on page 460
Remote Commands in I/Q Analyzer Mode