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User InterfaceGPS and Assisted GPS

67Operating Manual 1171.5248.12 ─ 15

"External

(TRIGGER 1 /

2)"

The trigger event is executed with the aid of the active edge of an exter-

nal trigger signal.

The trigger signal is supplied via the TRIGGER connector.

The polarity, the trigger threshold and the input impedance of the

TRIGGER input can be set in the "Global Trigger/Clock Settings" dialog.

SCPI command:

[:SOURce<hw>]:BB:GPS:TRIGger:SOURce on page 135

Sync. Output to External Trigger

(enabled for Trigger Source External)

Enables/disables output of the signal synchronous to the external trigger event.

"On"

Corresponds to the default state of this parameter.

The signal calculation starts simultaneously with the external trigger

event but because of the instrument’s processing time the first samples

are cut off and no signal is outputted. After elapsing of the internal pro-

cessing time, the output signal is synchronous to the trigger event.

"Off"

The signal output begins after elapsing of the processing time and starts

with sample 0, i.e. the complete signal is outputted.

This mode is recommended for triggering of short signal sequences

with signal duration comparable with the processing time of the instru-

ment.

SCPI command:

[:SOURce<hw>]:BB:GPS:TRIGger:EXTernal:SYNChronize:OUTPut

on page 133

Trigger/Marker/Clock Settings

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Case K44 Spécifications Page 81