R&S FS300, Руководство по эксплуатации

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R&S FS300 Spectrum Analyzer
Operating manual, 02/2006 6-143 E-1007.9900.15
6.2.6.2 External Trigger Sources
What the settings
are for
From the EXTERNAL submenu, you can activate an external TTL signal and
specify the trigger edge for triggering measurements.
Selecting the
EXTERNAL
submenu
•
Press the
function key
in the
menu.
The submenu is opened and the appropriate functions are assigned to
the function keys [12].
Function key
assignment
Quitting the submenu
Triggering on the rising edge of the external TTL signal ( 6-144)
Triggering on the falling edge of the external TTL signal ( 6-144)
NOTE
The and function keys are selection keys. In other words,
only one setting can be selected at any one time. The function key in question
is highlighted.
The RISING EDGE function is the default setting.