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3
Chapter 3 Features and Functions
Triggering
External Triggering In the external trigger mode, the function
generator will accept a hardware trigger applied to the rear-panel
Trig In connector. The function generator initiates one sweep or outputs
one burst each time Trig In receives a TTL pulse with the specified edge.
See also "Trigger Input Signal," on the following page.
• Front-Panel Operation: The external trigger mode is like the manual
trigger mode except that you apply the trigger to the Trig In connector.
To select the external source, press the Trigger Setup softkey and
then select the Source Ext softkey.
To specify whether the function generator triggers on the rising or
falling edge, press the Trigger Setup softkey and then select the
desired edge by pressing the Slope softkey.
• Remote Interface Operation:
TRIGger:SOURce EXTernal
Use the following command to specify whether the function generator
triggers on the rising or falling edge.
TRIGger:SLOPe {POSitive|NEGative}
Software (Bus) Triggering The bus trigger mode is available only
from the remote interface. This mode is similar to the manual trigger
mode from the front panel, but you trigger the function generator by
sending a bus trigger command. The function generator initiates one
sweep or outputs one burst each time a bus trigger command is received.
• To select the bus trigger source, send the following command.
TRIGger:SOURce BUS
• To trigger the function generator from the remote interface (GPIB or
RS-232) when the Bus source selected, send the TRIG or *TRG
(trigger) command. The front-panel
function generator is waiting for a bus trigger.
100
key is illuminated when the
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