Ophir Optronics Ltd QSR Manuel D’Utilisation

Chapter 6 – Measuring with the Pyroelectric and PD10 Heads

Configuring Measurement Settings

Using a Diffuser

You can add a diffuser to some pyroelectric heads. A diffuser enables the energy
ranges to reach very high levels. When using a head that can have a diffuser,
configure the diffuser setting in the Measurement Parameters Area.

To select whether a diffuser is in use:

1. Select whether a diffuser is in use (In) or not in use (Out) from the

Diffuser drop down list in the Measurement Parameters Area.

Figure 6-3 Diffuser Drop Down List

When you change this setting, a dialog box appears reminding you to either
insert or remove the diffuser.

Note: For heads that are not equipped with a diffuser, this setting is

unavailable, and the heads are configured to measure in Diffuser Out
mode.

Selecting the Pulse Width

Some pyroelectric heads can be configured to measure long as well as short
pulses. To accomplish this, the user must configure the head for long laser pulses
or short pulses.

Note: If the pulse length is incorrectly set to the short setting for pulses

longer than that value, the reading will be erroneously low. If it is set
to the longer setting for short pulses, the reading will be correct, but
noisier.

To select a pulse width:

1. Select the pulse width from the Pulse Width drop down list in the

Measurement Parameters Area.

Figure 6-4 Pulse Width Drop Down List

Note: For heads with only one pulse width setting, the Pulse Width Drop

Down list is unavailable and the head is configured to measure in its
correct mode.

StarLab User Guide