Newport 843-R, 843-R-USB Quick Reference

Rev 1.00-1-15-Mar-2013 yp
Initial Revision
Rev 1.24-1-27-Aug-2014 yp
Added 843-R-USB+note in

4.4. Other Settings and Saving the Startup Configuration

1. You can set the period over which to Average the measurements.

2. You can set the Energy Range to measure in. Select the lowest range
that is higher than the maximum expected energy measurement.

3. Set the Threshold to screen out noise that may be seen as false triggers
and measured as energy pulses.

4. If the sensor is a diffuser sensor, set diffuser to IN or OUT.

5. Select “Pulse Length” and choose the shortest pulse length setting that
is longer than your laser’s pulse length.

Warning:

Incorrect readings will result if pulse length is not set up correctly.

4.5. Energy or Average Power Measurement

Warning:

Do not exceed maximum sensor limits for power, energy, power density
and energy density as listed in tables 5 and 6 in section 9 of the manual.
Otherwise there is a risk of damaging the absorber.

With the pyroelectric sensor, you have been supplied a test slide with the
same coating as on your pyroelectric detector. You can also obtain this
slide from your dealer. You should use this slide to test the damage
threshold with your laser pulses. If the slide shows damage, then
either enlarge your beam or lower the laser energy until damage is no
longer seen.

4.6. To choose Energy or Average Power Measurement

In the main measurement screen press the Mode key. Select power or
Energy and press the OK key.

Newport Corporation

1791 Deere Avenue, Irvine, CA, 92606, USA

Phone. [phone] x31694

www.newport.com

Rev 1.34-1/17.02.16/yp Newport P/N 1J06059

843-R / 843-R-USB
Power Meters

843-R / 843-R-USB Quick Reference

Quick Reference

1 Getting Started

Note: Any mention of the 843-R throughout this quick

reference refers to the 843-R-USB as well.

The 843-R is equipped with "soft keys." That is, the
functions of the keys change as indicated by the legend
above each key.

To connect sensor to the 843-R meter:
Insert the 15 pin D type connector of the measuring sensor
cable into the socket marked "Sensor Input" on the rear
panel of the 843-R meter.

To switch the 843-R on:
Briefly press the on/off switch (bottom-most key). The unit
will switch on, and the display will appear. Note that the
sensor must be plugged in before the unit is switched on.
The backlight for the 843-R’s LCD can be configured to
toggle between full, half, and low illumination. This toggling
will be performed by briefly pressing the on/off switch after
the 843-R has been switched on. To switch the 843-R off,
press the on/off switch and hold it for ~ 2 seconds until the
display blanks.

The 843-R automatically saves the current for next po wer
up.

Enter the Setup screen to update the following:

1. Select “Show Settings” and enter. Set to Yes to display
sensor settings in the measurement screens. Set to No
to hide the sensor settings and show a larger graph.

2. Select “Line Frequency” and enter. Set to 50Hz or 60Hz,
depending on the electrical power grid of the area that
you are in.

3. Select Date and enter. Scroll through and select Month,
Day, Year, Hour and Minutes with the Right arrow.
Change the selected item with the Down arrow.

To zero instrument:

1. Disconnect the sensor.

2. Make sure instrument is not in an electrically noisy environment and is
undisturbed.

3. Press “Zero” and “Start”. Wait until “Zeroing completed successfully”
appears. For more details, see main manual section 3.5.5.

2 Thermal Sensors

2.1. Use of 843-R with Thermal Type Sensors

To set type of laser being used:

1. With the sensor attached, enter the Setup screen.

2. Press the Down arrow until Laser is highlighted and press the Enter
arrow.

3. Select the appropriate laser wavelength and press the OK key.

4. This will be saved automatically as the laser setting to work with.

To choose manual or automatic ranging in power measurement:

1. With the sensor attached, enter the Setup screen.

2. Press the Down arrow until Range is highlighted and press the Enter
arrow.

3. Select the appropriate manual range or AUTO and press the OK key.

4. This will be saved automatically as the laser setting to work with.

To choose power or energy measurement:
In the main measurement screen press the Mode key. Select power or
Energy and press the OK key.

2.2. Other Settings and Saving the Startup Configuration

1. When measuring power, you can set the period over which to Average
the measurements.

2. When measuring energy you can set the threshold level in order to
screen out false triggers.

3. The present settings are automatically saved for th e next time 843-R is
turned on.

2.3 Power or Single Shot Energy Measurement

Warning:

Do not exceed maximum sensor limits for power, energy, power density and
energy density as listed in tables 5 and 6 in section 9 of the main manual.
Otherwise, there is a risk of damaging the absorber.

To use the 843-R to measure laser power:

1. Press the Mode key and select Power. Press the OK key.

2. In the Setup screen Press the Down arrow until Range is highlighted
and press the Enter arrow. Select AUTO or one of the manual ranges.
The correct manual range is the lowest one that is larger than the

expected maximum power of the laser. Note that the range will be

displayed in the lower right corner of the main display.

To use the 843-R to measure laser energy:

1. Press the Mode key and select Energy. Press the OK key.

2. The energy mode is manual ranging. In the Setup screen Press the
Down arrow until Range is highlighted and press the Enter arrow. The
correct range is the lowest one that is larger th an the pulse energy
measured. Note that the range will be displayed in the lower right
corner of the main display.

3. When the 843-R screen flashes "READY", on and off, fire the laser.

To select an analog needle type display for the 843-R:
Press the “Display” key. Select “Needle” and p ress the OK key. The
display will now show a simulated analog needle type display.

To expand the bargraph scale ±5x about the present reading:

1. From the main power measurement screen press the "Zoom” button.

2. Press the "Zoom” button again to return to the ordinary bargraph.

To subtract background and set current reading to zero:

1. From the main power measurement screen press the "Offset” button.

2. Press "Offset" again to cancel.

3 Photodiode Sensors

3.1. Selecting Chosen Wavelengths

To set type of laser being used:

1. With the sensor attached, enter the Setup screen.

2. Press the Down arrow until Laser is highlighted and press the Enter
arrow.

3. Select the appropriate laser wavelength and press the OK key.

4. If the wavelength you want is not among the wavelengths in the six
wavelengths listed press the Modify key.

5. Us e the Right and Down arrows to adjust the wavelength as desired.
Then press the OK key.

To choose manual or automatic ranging or dBm in power measurement:

1. With the sensor attached, enter the Setup screen.

2. Press the Down arrow until Range is highlighted and press the Enter
arrow.

3. Select the appropriate manual range or AUTO (o r dBm for logarithmic
scale) and press the OK key.

4. This will be saved automatically as the laser setting to work with.

3.2. Other Settings and Saving the Startup Configuration

1. You can set the period over which to Average the measurements.

2. You can set the removable Filter setting to OUT for more accuracy and
a wider wavelength range; you can set it to IN to measure higher
powers.

3. The present settings are automatically saved for the next time 843-R is
turned on.

3.3. Power Measurement

Warning:

Do n ot exceed maximum sensor limits for power, energy, power density
and energy density as listed in tables 5 and 6 in section 9 of the manual,
Sensor Specifications. Otherwise, there is a risk o f damaging the
absorber.

To expand the bargraph scale ±5x about the present reading:

1. From the main power measurement screen, press the “Zoom”

button.

2. Press the “Zoom” button again to return to the ordinary bargraph.

To subtract background and set current reading to zero:

1. From the main power measurement screen press the "Offset” button.

2. Press "Offset" again to cancel. See Section 5.4.5 of the main manual for
details.

4 Pyroelectric or Photodiode Energy Sensors

4.1 Zeroing Instrument against Sensor

For most accurate calibration, you should zero the p yroelectric sensor
against the 843-R it is being used with. Proceed as follows:
Make sure the sensor is in a quiet environment and not subject to pulsed
radiation. Plug sensor into 843-R and turn on. Enter the Setup screen.

Press “Zero” and “Start”. Wait until “Zeroing completed successfully”

appears. For more details, see main manual section 3.5.5.

4.2. Changing Chosen Wavelengths

1. With the sensor attached, enter the Setup screen.

2. Press the Down arrow until Laser is highlighted and press the Enter
arrow.

3. Select the appropriate laser wavelength and press the OK key.

4. If the wavelength you want is not among the wavelengths in the six
wavelengths listed press the Modify key.

5. Us e the Right and Down arrows to adjust the wavelength as desired.
Then press the OK key.

4.3. To Set Type of Laser Being Used

To set type of laser being used:

1. With the sensor attached, enter the Setup screen.

2. Press the Down arrow until Laser is highlighted and press the Enter
arrow.

3. Select the appropriate laser wavelength and press the OK key.

4. This will be saved automatically as the laser setting to work with.