Ophir Optronics Ltd QSR Manual Do Utilizador

Chapter 7 – External Triggers and Missing Pulses

Using the External Trigger in Output Mode

Figure 7-2 External Trigger Window Time – Rising Edge Mode

Enabling or Disabling a Channel to Work with External Trigger

Any active channel of the Pulsar can be configured to use the External Trigger,
as long as the head is pyroelectric or PD10.

To enable or disable a channel:

1. In the Measurements Parameters area, in the External Trigger drop-

down, select:

On to enable the External Trigger.

•
• Off to disable the External Trigger.

Figure 7-3 Measurement Parameters – Ext. Trigger Options

The External Trigger is enabled or disabled.

Note: When the External Trigger is not in use, ensure that the Ext. Trigger

drop-down is set to Off. Otherwise the application may not function
properly.

Using the External Trigger in Output Mode

In addition to the input modes described in the previous section, the External
Trigger BNC connector can be used as an output that can trigger any external
circuitry. The output is a short digital pulse (10us), which occurs whenever a
pulse is seen on the head detector.

Note: The exact timing delay between the pulse and the output signal

depends on the type of head detector being used. For metallic

StarLab User Guide