BNC 577 - Manual (Page 36)

Model 577 Operating Manual 30
9 Option DT15 (Dual Trigger)
In the Gate/Trigger menu the Gate soft key will allow the user to set the functionality of the Gate input. The
Choices are Gate, Trigger, or ReArm. This module option allows the GATE input to function as a second Trigger
input. The Dual Trigger Option also enables the Gate input to ReArm the unit. For consistency, the enabling menu
for this option is located in the Gate function selection. Once the Dual Trigger Mode is enabled, both the GATE
and TRIG inputs can act as Trigger inputs
Adjustments for the GATE input are located in the Gate/Trigger menu. The voltage threshold level and trigger
edge for the GATE input can be adjusted from this menu. The GATE trigger edge choice is only available when in
Dual Trigger Mode.
Once Dual Trigger functionality is enabled on the unit (both the Trigger and the Gate inputs must be enabled and
set to Triggering mode), each channel will be assigned to a trigger source input. The Trigger input will be the
source for channels A, B, E, and F and the gate will be the trigger source for channels C, D, G, and H. The trigger
source for each channel can be viewed in the given channel menu in the soft keys.
The ReArm function will behave the same as the ReArm soft key, Refer to that section above for a detailed
description of the ReArm function.
9.1 Enabling System Trigger
Enable the use of the TRIG input by the system timer as a trigger source.
Mode: Selects between disabling/enabling the trigger mode(s).
Level: Sets the trigger threshold.
Edge: Selects between rising and falling edges as the trigger source when a trigger mode is enabled.
* The GATE Input functions as a standard Gate
when not in “Dual Trig” or “ReArm” modes.
Considering the event itself, or the documentation requirements that follow, enlist our team of spectroscopists with
an Enhanced Reachback Program.