Triggers
R&S
®
RTM20xx
38User Manual 1317.4726.02 ─ 01
7. Set the "Normal" trigger mode: Press the AUTO/NORMAL key on the front panel until
"Norm" is shown in the information bar.
3.2.2 Positioning the Trigger
By positioning the trigger, you define which part of the waveform is displayed: mainly the
pretrigger part, or the posttrigger part, or the part around the trigger point. Therefore, you
set the time reference (also known as reference point) and the trigger position in relation
to the time reference.
1. To set the time reference point:
a) Press the SETUP key on the left of the display.
b) Select "Time Reference".
c) Turn the navigation knob to move the reference point.
2. To set the trigger position, turn the POSITION rotary knob in the HORIZONTAL func-
tional block.
3.2.3 Setting Up a Trigger Sequence
An A/B trigger sequence consists of two edge triggers connected by a time delay or event
count.
1. Press the SETUP key in the TRIGGER functional block.
2. Press the "Trigger Type" softkey and select "Edge" trigger.
3. Select "Setup", configure the A trigger and select "Back".
4. Press the "B-Trigger" softkey to enable the B-trigger.
The LEVEL knob and SLOPE key on the front panel are automatically assigned to
the B-trigger. You can change the assignment with the "Trigger Level" softkey in the
"Trigger" menu.
5. Press the "B-Setup" softkey.
6. Configure the B-trigger: Select "B-Source" and "Slope", and turn the LEVEL rotary
knob to adjust the B-trigger level.
7. Define the connection between the A and B triggers by doing one of the following:
● Press "Time" and adjust the delay time with the navigation knob.
● Press "Events" and enter the number of B-trigger events that have to be fulfilled
until the instrument triggers.
Setting Up the Trigger