R&S SMJ100A, Operating Manual

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Instrument Function
R&S
®
SMJ100A
372 Operating Manual 1403.7458.32 ─ 14
The delay and inhibit values are usually expressed in the units of the generated signal.
To enable you to define the exact delay or inhibit period directly as a time value (e.g. in
seconds), the instruments provide additional parameters. You can determine the units
the values are defined in and the instrument calculates and displays the actual time
delay/inhibit.
Example:
This example is based on a signal with 1 MHz clock frequency ("Baseband > ARB >
Clock Frequency > 1 MHz").
Step 1: Enable the following settings:
●
"Baseband > ARB > Trigger In > Mode > Armed Auto"
●
"ARB > Trigger In > Source > External"
●
"ARB > Trigger In > External Delay Unit > Samples"
●
"ARB > Trigger In > External Delay > 100 Samples"
The parameter "Actual External Delay = 100 us" displays the time delay in seconds.
Step 2: Enable the following settings:
●
"ARB > Trigger In > External Delay Unit > Time"
●
"ARB > Trigger In > Specified External Delay > 10 us"
Logically, the "Actual External Delay" changes to 10 us.
Step 3:
●
Switch to "ARB > Trigger In > External Delay Unit > Samples".
The value of "ARB > Trigger In > External Delay" is 10 Samples.
Step 1 Step 2 Step 3
This principle applies for any external triggering and triggering via the other path(s).
5.8.3.2 ARB User Interface
To access the ARB dialog, select "Baseband > ARB" or use the MENU key under
"Baseband".
The "ARB" dialog is divided into an upper and a lower general part together with a
"Marker" section.
The upper part of the menu is used for powering up, selecting and configuring ARB
modulation.
Baseband Signal - Baseband Block