To Next Page

To Previous Page

2 System Operation

This section contains important information concerning the installation and

operation of the 1917-R hand-held power meter. The 1917-R is delivered

ready to use. Just insert a detector in the Probe Input Jack (#2 in Figure 1-2))

and press the I/O key.

2.1 Making a Power Measurement

1- Install the power detector on its optical stand.

With the 1917-R turned off, connect the power detector head to the 1917-R using the

PROBE INPUT JACK (see Fig. 1-2). It is recommended to turn the 1917-R off

before connecting a new detector head in order to prevent any loss of information from

the detector head’s EEPROM.

Fasten the DB-15 thumbscrews.

Switch the 1917-R ON using the I/O key. The 1917-R displays the firmware version

and then the current wavelength for a moment before displaying measurements. If this

wavelength is not the wavelength of the laser, go to step 5, otherwise proceed to step 6.

Select the proper wavelength using Display button until you obtain the wavelength

display mode (

λ) and then, press the ▲ up and Down ▼ down control keys. The

1917-R automatically stores the wavelength selection in non-volatile memory when the

1917-R is set back to the measurement display mode, so it returns to this same

wavelength when it is turned on again.

Zero Offset Adjustment (steps 6 to 8)

Remove the detector’s protective cover.

Put the detector into the laser beam path. The entire laser beam must be within the

sensor aperture. Do not exceed maximum specified densities, energies or powers. For

the most accurate measurement, spread the beam across 60% to 80% of the sensor area.

Leave it there until the detector has reached its equilibrium temperature.

Block off laser radiation to the detector.

The power read by the 1917-R when no laser beam is incident on the detector may not

be exactly zero. This is because the detector is not thermally stabilized, OR there was a

heat source in the detector’s field of view when you turned on the 1917-R, OR it is

caused by the internal electronic offset of the 1917-R.

Newport 1917-R User Manual

Questions and Answers: