Rohde & Schwarz FSW26 - How to Output a Trigger Signal

Common Measurement Settings
R&S
®
FSW
436User Manual 1173.9411.02 ─ 19
6.6.3.3 How to Configure a Gated Measurement
1. Determine the required parameters as described in chapter 6.6.3.1, "How to Deter-
mine the Required Trigger/Gate Parameters", on page 434.
2. The gate is opened by a trigger event, which must be based on a power source.
Define the trigger as described in chapter 6.6.3.2, "How to Configure a Triggered
Measurement", on page 435. As the "Trigger Source", use "IF Power", "Video" or
"External".
3. Define how long the gate is to remain open:
To measure the signal as long as the trigger level is exceeded, for example for one
or more pulses, define "Gate Mode" = "Level".
To measure the signal for a certain time after a level is exceeded, for example dur-
ing a burst:
a) Define "Gate Mode" = "Edge".
b) Define the time to measure for each gate: "Gate Length".
4. To open the gate with a time delay, for example to ignore an overshoot, define a
"Gate Delay".
5. Select "Gated Trigger" = "On".
6.6.4 How to Output a Trigger Signal
Using one of the variable TRIGGER INPUT/OUTPUT connectors of the R&S FSW, the
internal trigger signal can be output for use by other connected devices. For details on
the connectors see the R&S FSW "Getting Started" manual.
To output a trigger to a connected device
1. In the "Trigger In/Out" tab of the "Trigger and Gate" dialog box, set the trigger to be
used to "Output".
(Note: Trigger 2 is output to the front panel connector, Trigger 3 is output to the
rear panel connector.)
2. Define whether the trigger signal is to be output automatically ("Output Type" =
"Device triggered" or "Trigger Armed") or whether you want to start output manually
("Output Type" = "User-defined").
3. For manual output: Specify the constant signal level and the length of the trigger
pulse to be output. Note that the level of the trigger pulse is opposite to the con-
stant output "Level" setting (compare the graphic on the "Send Trigger" button).
4. Connect a device that will receive the trigger signal to the configured TRIGGER
INPUT/OUTPUT connector.
5. Start a measurement and wait for an internal trigger, or select the "Send Trigger"
button.
Trigger and Gate Configuration