R&S SMJ100A, Operating Manual

Page: 392 / 874

Instrument Function
R&S
®
SMJ100A
376 Operating Manual 1403.7458.32 ─ 14
HDD Streaming
Enables/disables the streaming of modulation data direct form the hard drive (HDD).
HDD streaming is recommended for processing of large files that require more ARB
memory than the currently installed one.
HDD Streaming is enabled for waveform with"Clock Freq." <= 1 MHz and "Number of
Samples" > 16 MS.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:WAVeform:HDDStreaming:STATe
on page 617
Streaming Buffer
(enabled for waveform with "Clock Freq." <= 1MHz and "Number of Samples" > 16MS)
Displays the filling level of the streaming buffer.
During normal operation, the streaming buffer level should have a value of 90% ..
100%. Buffer level around 0% indicates a buffer underrun and the signal processing
will be interrupted.
Adjustment in the parameter value or state usually results in short decreasing of the
streaming buffer level but this buffer state should not be misunderstood as buffer
underrun.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:WAVeform:HDDStreaming:BLEVel?
on page 616
Clock Frequency
Displays or enters the ARB output clock rate.
When the waveform file is loaded, this value is automatically set to the clock rate
defined in the file (Clock tag). The user can subsequently alter the value if necessary.
When intending to work with an external clock source, the frequency to be applied
must be entered here.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CLOCk
on page 581
Trigger/Marker
Calls the Trigger and Marker menu.
This menu is used to select the trigger source, set the time delay on an external trigger
signal and configure the marker output signals (see
"Trigger/Marker/Clock Settings"
on page 377).
Remote command:
n.a.
Execute Trigger
Executes trigger manually. A manual trigger can be executed only when an internal
trigger source and a trigger mode other than Auto are selected.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:TRIGger:EXECute
on page 584
Baseband Signal - Baseband Block