Newport 1919-R User Manual
1919-R
1919-R
Laser Power/Energy Meter
1919 - R
User Manual
Newport Corporation
www.newport.com
Table of Contents
1 Introduction ................................................................................................................... 5
1.1 This Document ............................................................................................................... 5
1.2 Related Documentation ................................................................................................ 5
1.3 Support .......................................................................................................................... 6
2 Quick Reference ............................................................................................................. 7
2.1 Getting Started .............................................................................................................. 7
2.2 Thermopile Sensors ....................................................................................................... 8
2.2.1 Using 1919-R with Thermopile Type Sensors .................................................... 8
2.2.2 Using 1919-R to Measure Laser Power.............................................................. 8
2.2.3 Using 1919-R to Measure Single Shot Energy ................................................... 8
2.3 Photodiode Sensors ....................................................................................................... 8
2.3.1 Using 1919-R with Photodiode Type Sensors .................................................... 8
2.3.2 Setting the Measurement Parameters .............................................................. 9
2.3.3 Measuring Average Power or Exposure ............................................................ 9
2.4 Pyroelectric or Photodiode Energy Sensors .................................................................. 9
2.4.1 Using 1919-R with Energy Sensors .................................................................... 9
2.4.2 Zeroing Instrument against Sensor .................................................................. 10
2.4.3 Setting the Measurement Parameters ............................................................ 10
2.4.4 Measuring Energy, Average Power, or Exposure ............................................ 11
2.5 Graphical Displays ....................................................................................................... 11
2.6 Math Functions ............................................................................................................ 13
2.7 Logging Data to a File for Upload to PC ....................................................................... 13
3 Using the 1919-R Display Unit ....................................................................................... 14
3.1 General Description ..................................................................................................... 14
3.2 1919-R Display Unit Components ................................................................................ 15
3.3 1919-R Hardware Components/Interfaces ................................................................. 16
3.3.1 Sensor Input ..................................................................................................... 16
3.3.2 LCD Display and Backlight ................................................................................ 17
3.3.3 Soft Keys .......................................................................................................... 17
3.3.4 Navigation Keys ............................................................................................... 17
3.3.5 On-Off Switch/Backlight Control ..................................................................... 17
3.3.6 Charger Input ................................................................................................... 18
3.3.7 Analog Output ................................................................................................. 19
3.3.8 RS232 and USB Outputs ................................................................................... 20
3.4 1919-R Functions – Independent of Sensor Type ....................................................... 20
3.4.1 Instrument Settings ......................................................................................... 20
3.4.2 Field Upgrade – Updating the 1919-R Firmware ............................................. 23
3.4.3 Clock Settings ................................................................................................... 23
3.4.4 Zero Adjustments ............................................................................................ 24
3.4.5 Line Frequency ................................................................................................. 25
3.4.6 Language .......................................................................................................... 25
3.4.7 Measurement Screens (Graph Types) ............................................................. 26
3.4.8 Color Scheme ................................................................................................... 27
3.5 1919-R Screen Layout .................................................................................................. 29
1919-R User Manual 1
4 Points to Consider ........................................................................................................ 30
5 Thermopile Sensors ...................................................................................................... 31
5.1 Operation of 1919-R with Thermopile Absorber Sensors ........................................... 32
5.2 Measuring Laser Power with Thermopile Sensors ...................................................... 32
5.3 Measuring Laser Energy with Thermopile Sensors ..................................................... 33
5.3.1 Measuring Pulses of Very Low Energy ............................................................. 34
5.3.2 Measuring Energy of Rapidly Repeating Pulses ............................................... 35
5.4 Measuring Laser Pulsed Power with Thermopile Sensors .......................................... 35
5.4.1 Pulsed Power Limitations ................................................................................ 36
5.5 Supported Models ....................................................................................................... 36
6 Photodiode Sensors...................................................................................................... 37
6.1 Operation of 1919-R with Photodiode Sensors ........................................................... 38
6.2 Measuring Laser Power with Photodiode Sensors ...................................................... 38
6.3 Averaging and Measuring Very Low Power Measurements ....................................... 40
6.4 Measuring Total Exposure ........................................................................................... 40
6.4.1 Exposure Limitations ....................................................................................... 41
7 Pyroelectric and Photodiode Energy Sensors ................................................................. 42
7.1 Pyroelectric Sensors – Method of Operation .............................................................. 42
7.2 Photodiode Energy Sensors – Method of Operation .................................................. 42
7.3 Measuring Pulses of High Energy Density ................................................................... 43
7.4 Operation of 1919-R with Pyroelectric and Photodiode Energy Sensors.................... 43
7.4.1 Zeroing the Energy Sensor Against the 1919-R Meter .................................... 44
7.4.2 Setting Measurement Parameters When Using Energy Sensors .................... 44
7.4.3 Energy, Average Power, or Exposure Measurement ....................................... 46
7.4.4 Measuring Laser Energy................................................................................... 46
7.4.5 Measuring Average Power............................................................................... 47
7.4.6 Measuring Total Energy Exposure ................................................................... 47
8 Graphical Displays ........................................................................................................ 49
8.1 Display Settings............................................................................................................ 50
8.2 Bargraph ...................................................................................................................... 51
8.2.1 Modes .............................................................................................................. 51
8.2.2 Zoom ................................................................................................................ 52
8.2.3 Offset ............................................................................................................... 52
8.2.4 Measuring Loss Using the dB Offset Function ................................................. 53
8.2.5 Bargraph Style .................................................................................................. 54
8.3 Analog Needle ............................................................................................................. 56
8.3.1 Modes .............................................................................................................. 57
8.3.2 Persist .............................................................................................................. 57
8.4 Line Graph ................................................................................................................... 58
8.4.1 Modes .............................................................................................................. 58
8.4.2 Percentage Range (Y-Axis Scale) ...................................................................... 59
8.4.3 Horizontal Sweep Time (X-Axis Scale) ............................................................. 59
8.4.4 Reset ................................................................................................................ 60
8.5 Statistics ....................................................................................................................... 60
8.5.1 Modes .............................................................................................................. 61
1919-R User Manual 2
8.6 Pass/Fail ....................................................................................................................... 61
8.6.1 Modes .............................................................................................................. 62
8.6.2 Upper/Lower Limits ......................................................................................... 62
8.7 Exposure (for Pyroelectric Sensors)............................................................................. 63
8.7.1 Modes .............................................................................................................. 64
8.7.2 Manual/Timeout/Pulses .................................................................................. 64
8.7.3 Exposure for Photodiode Sensors ................................................................... 64
8.8 Pulse Chart ................................................................................................................... 65
8.8.1 Modes .............................................................................................................. 66
8.9 Other Display Settings ................................................................................................. 66
8.9.1 Show/Hide Settings ......................................................................................... 67
8.9.2 Color Scheme ................................................................................................... 67
9 Math Functions ............................................................................................................ 70
9.1 Display on Main Measurement Screen ....................................................................... 70
9.2 Functions Screen ......................................................................................................... 71
9.3 Average ........................................................................................................................ 71
9.4 Fixed Offset .................................................................................................................. 72
9.5 Scale Factor.................................................................................................................. 72
9.6 Normalize .................................................................................................................... 74
9.7 Density ......................................................................................................................... 75
9.8 Function Limitations .................................................................................................... 76
10 Logging Data to a File for Upload to PC ......................................................................... 77
10.1 Launching the Log Setup ............................................................................................. 77
10.2 Setting Logging Parameters for the Various Stop Modes ........................................... 78
10.2.1 Manual Mode .................................................................................................. 79
10.2.2 After Timeout .................................................................................................. 80
10.2.3 After Measurements ........................................................................................ 82
10.3 Start Logging ................................................................................................................ 83
10.4 Displaying Logged Data ............................................................................................... 84
10.5 Viewing the Log File on Your Computer ...................................................................... 87
11 Circuit Description ........................................................................................................ 88
11.1 Analog Module ............................................................................................................ 88
11.1.1 Analog Circuit ................................................................................................... 88
11.1.2 Fast Analog Input ............................................................................................. 88
11.1.3 Analog Output ................................................................................................. 88
11.2 Processor Board ........................................................................................................... 88
11.2.1 Power Supply ................................................................................................... 88
11.2.2 EMI Protection ................................................................................................. 89
12 Calibration, Maintenance, and Troubleshooting ............................................................ 90
12.1 Updating Sensor Calibration Factors ........................................................................... 91
12.2 Calibration of Thermopile Sensors .............................................................................. 91
12.2.1 Surface Absorbers ............................................................................................ 91
12.2.2 Volume Absorbers ........................................................................................... 92
12.2.3 Linearity and Accuracy of Newport Thermopile Sensors ................................ 92
12.2.4 Updating Thermopile Sensor Calibration Factors ............................................ 93
1919-R User Manual 3
Introduction
12.3 Calibration of Photodiode Sensors .............................................................................. 98
12.3.1 Method of Factory Calibration ........................................................................ 98
12.3.2 Accuracy of Calibration .................................................................................... 98
12.3.3 Updating Photodiode Sensor Calibration Factors ........................................... 99
12.4 Calibration of Pyroelectric Sensors............................................................................ 100
12.4.1 Absorber Types Used in Newport Pyroelectric Measuring Sensors .............. 100
12.4.2 Calibration ..................................................................................................... 101
12.4.3 Accuracy of Calibration .................................................................................. 101
12.4.4 Updating Pyroelectric Sensor Calibration Factors ......................................... 102
12.5 Error Messages .......................................................................................................... 104
12.6 Troubleshooting ........................................................................................................ 104
12.6.1 1919-R Meter ................................................................................................. 104
12.6.2 Thermopile Sensors, Energy Measurements ................................................. 104
12.6.3 Thermopile Sensors, Power ........................................................................... 105
12.6.4 Pyroelectric Sensors....................................................................................... 105
12.7 Maintenance .............................................................................................................. 106
12.7.1 Maintenance of Thermopile Sensors ............................................................. 106
12.7.2 Battery Replacement ..................................................................................... 106
13 1919-R Specifications .................................................................................................. 107
13.1 System/Meter Specifications..................................................................................... 107
13.2 Sensor Specifications ................................................................................................. 109
1919-R User Manual 4
1 Introduction
The Newport 1919-R is a microprocessor-based Laser Power/Energy Meter that provides a broad
range of measurements, displays, and data handling options. It operates with Thermopile,
Pyroelectric, and Photodiode sensors. Taking advantage of smart connector technology, it is easyto-use—simply connecting the sensor configures and calibrates the 1919-R to operate with that
sensor. The sensor configuration and calibration information is stored in an EEROM in the sensor
connector plug. This means that when the sensor is plugged in, 1919-R automatically identifies the
sensor type, calibration, and configuration. The user does not have to adjust anything.
The 1919-R’s 320x240 full color screen enhances measurement readouts in ways that simple
monochrome displays cannot. The 1919-R can graph power or energy versus time. It displays
power measurements in both digital and analog form simultaneously and also has a needle type
display. It will also autorange, so you do not have to set scales; or it can manual range if you wish.
It will remember what mode you were using before you turned it off and will return to that mode
when turned on. You can zoom in on the present reading, or subtract background. Although the
calibration information is stored in the smart connector, you can recalibrate from the screen and
store the new calibration in the sensor. You can also zero the 1919-R at the touch of a button.
1919-R is capable of logging data onto a USB Flash Drive (Disk On Key), as well as real-time
reporting of data via USB to Newport’s PMManager application to display and process the
information. 1919-R has RS232 capabilities as well. 1919-R also has the infrastructure for field
upgrading of the embedded software, should the need arise.
Above all, the 1919-R has advanced circuitry and digital signal processing for excellent sensitivity,
signal to noise ratio, accuracy, and response time. It also has special circuitry to reject
electromagnetic interference.
1919-R’s User Interface is intuitive. The keypad functionality is context-sensitive and functions
according to the needs of the present screen. Where necessary, on-screen help is provided as well,
so you should not have to refer to this manual very often.
1.1 This Document
This document covers everything you need to know to make full use of the 1919-R for all your
laser measurement needs. It includes a Quick Reference (Chapter 2) to allow you to perform basic
measurements immediately, without reading the whole manual.
1.2 Related Documentation
Newport takes pride in the wealth of laser measurement information that we provide including
FAQ’s, Catalogs, Spec Sheets, and more. Go to https://www.newport.com/Optical-
Meters/6770532/1033/section.aspx.
1919-R User Manual 5
Introduction
North America
Europe
Asia
Newport Corporation Service
Dept.
1791 Deere Ave. Irvine, CA 92606
Telephone: (949) 253-1694
Telephone: (800) 222-6440 x31694
Newport/MICRO-CONTROLE S.A.
Zone Industrielle
45340 Beaune la Rolande, FRANCE
Telephone: (33) 02 38 40 51 56
Newport Opto-Electronics
Technologies (Wuxi) Co., Ltd
理波光电科技（无锡）有限公司
江苏省无锡市新区出口加工区
J3-8厂房 204028
Lot J3-8, Wuxi Export Processing
Zone, New District,
Jiangsu China 204028
Telephone: +86-510-8113 2999
Fax: +86-510-8526 9050
1.3 Support
If you have a question or require further assistance, contact Newport customer support:
1919-R User Manual 6
2 Quick Reference
This section provides a quick reference for performing basic measurements with the 1919-R Laser
Power/Energy Meter.
2.1 Getting Started
The 1919-R is equipped with "soft keys." That is, the functions of the keys change as indicated by
the legend above each key. It is also equipped with 4 navigation keys and a round Enter key in the
center.
To connect sensor to the 1919-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 1919-R meter.
To switch the 1919-R on:
1. To switch on, briefly press the On/Off/Backlight switch. The unit will switch on, and the display
will appear.
2. The backlight for the 1919-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
1919-R has been switched on.
3. To switch the 1919-R off, press the On/Off switch and hold it for ~ 2 seconds until the display
blanks.
To set general instrument settings:
1. Disconnect the sensor. Use the Navigation keys to select the parameter to change and press
the Enter key. Change the setting with the Navigation keys. Press the Enter key to save.
2. RS232 Baud: Set baud rate for PC communication through its COM port.
3. Max An. Output: Set desired max analog output.
4. Language: Set to desired language.
5. Line Frequency: Set to 50Hz or 60Hz, depending on the electrical power grid of the area that
you are in.
6. Date and Time: Set to correct date and time.
The 1919-R automatically saves the current settings for next power up.
To zero the instrument:
1. Disconnect the sensor.
2. Make sure the instrument is not in an electrically noisy environment and is undisturbed.
3. Press Zero and Start. Zeroing takes about 30 seconds. Wait until “Zeroing completed
successfully” appears.
1919-R User Manual 7
Quick Reference
2.2 Thermopile Sensors
2.2.1 Using 1919-R with Thermopile Type Sensors
1. Plug in the Thermopile sensor. 1919-R will reconfigure itself to work with the attached sensor.
2. All of the sensor’s measurement parameters are shown on the main screen. Use the
Navigation keys to select and change the parameters.
3. Use the Navigation keys to select the parameter to change and press the Enter key. Change
the setting with the Navigation keys. Press the Enter key to save.
4. 1919-R saves the changes automatically for next startup of the instrument.
Warning: Do not exceed maximum sensor limits for power, energy, power density, and energy
density as listed in Sensor Specifications. Otherwise, there is a risk of damaging the absorber.
2.2.2 Using 1919-R to Measure Laser Power
1. Set Mode to Power.
2. Set Range to 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.
3. Set Laser to the appropriate laser setting.
4. Set Average to the period you wish to average power over or set to NONE to disable.
2.2.3 Using 1919-R to Measure Single Shot Energy
1. Set Mode to Energy.
2. Set Range to the appropriate manual range. (In Energy mode, there is no autoranging.) The
correct range is the lowest one that is larger than the expected maximum pulse energy of the
laser.
3. Set Laser to the appropriate laser setting.
4. Set Threshold if you wish to change the energy threshold.
5. When the 1919-R screen flashes READY on and off, fire the laser.
2.3 Photodiode Sensors
2.3.1 Using 1919-R with Photodiode Type Sensors
1. Plug in the Photodiode sensor. 1919-R will reconfigure itself to work with the attached sensor.
2. All of the sensor’s measurement parameters are shown on the main screen. Use the
Navigation keys to select and change the parameters.
3. Use the Navigation keys to select the parameter to change and press the Enter key. Change
the setting with the Navigation keys. Press the Enter key to save.
4. 1919-R saves the changes automatically for next startup of the instrument.
Warning: Do not exceed maximum sensor limits for power, energy, power density, and energy
density as listed in Sensor Specifications. Otherwise, there is a risk of damaging the absorber.
1919-R User Manual 8
Quick Reference
2.3.2 Setting the Measurement Parameters
1. Set Range to the appropriate manual range, AUTO, or dBm (logarithmic scale). Note that
when selecting a manual range, the correct range is the lowest one that is larger than the
expected maximum power of the laser.
2. Set Laser to the appropriate laser setting. If the wavelength you want is not among the
wavelengths listed, select one and press the arrow key that is next to it to open the Modify
screen. Using the up/down Navigation keys to change each number and the right/left keys to
move to the next number, key in the wavelength you want. When finished, press the Enter
key.
3. Set Filter to IN or OUT as physically configured on the sensor. Not necessary for sensors with
built-in filter state detection.
4. Set Average to the period you wish to average power over or set to NONE to disable.
2.3.3 Measuring Average Power or Exposure
To measure average power:
1. Set Mode to Power.
2. Set measurement parameters as described above.
To measure exposure:
1. Set Mode to Exposure.
2. Set measurement parameters as described above.
3. Set Stop Mode to Manual or Timeout period.
4. Accumulated energy exposure will be displayed on the screen, as well as the elapsed time.
2.4 Pyroelectric or Photodiode Energy Sensors
2.4.1 Using 1919-R with Energy Sensors
1. Plug in the Pyroelectric/Photodiode energy sensor. 1919-R will reconfigure itself to work with
the attached sensor.
2. All of the sensor’s measurement parameters are shown on the main screen. Use the
Navigation keys to select and change the parameters.
3. Use the Navigation keys to select the parameter to change and press the Enter key. Change
the setting with the Navigation keys. Press the Enter key to save.
4. 1919-R saves the changes automatically for next startup of the instrument.
Warning: Do not exceed maximum sensor limits for power, energy, power density, and energy
density as listed in Sensor Specifications. Otherwise, there is a risk of damaging the absorber.
1919-R User Manual 9
Quick Reference
2.4.2 Zeroing Instrument against Sensor
For most accurate calibration, you should zero the energy sensor against the 1919-R it is being
used with:
1. Make sure the sensor is in a quiet environment and not subject to pulsed radiation.
2. Press Menu and select Instrument.
3. Press Zero and Start. Wait until “Zeroing completed successfully” appears.
2.4.3 Setting the Measurement Parameters
1. Set Range to the lowest one that is larger than the expected maximum pulse energy of the
laser.
2. Set Laser to the appropriate laser setting. If this sensor is a metallic type and if the wavelength
you want is not among the wavelengths listed, select one and press the arrow key that is next
to it to open the Modify screen. Using the up/down keys to change each number and the
right/left keys to move to the next number, key in the wavelength you want. When finished,
press the Enter key.
3. Set Pulse Length to the shortest time that is longer than the expected pulse length.
Warning: Incorrect readings will result if pulse length is not set up correctly.
4. For sensors with the diffuser option, set Diffuser to IN or OUT as physically set on the sensor.
5. Set Threshold as necessary to screen out false triggers due to noise.
6. Set Average to the period you wish to average power over, or set to NONE to disable.
1919-R User Manual 10
Quick Reference
2.4.4 Measuring Energy, Average Power, or Exposure
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 is damaged, then either enlarge your
beam, or lower the laser energy until damage is no longer seen.
To measure energy:
1. Set Mode to Energy.
2. Set measurement parameters as described above.
3. Energy will be displayed on the screen as well as the laser’s frequency.
To measure average power:
1. Set Mode to Power.
2. Set measurement parameters as described above.
3. Average power will be displayed as a function of “Energy x Frequency” on the screen as well as
the laser’s frequency.
To measure exposure:
1. Set Mode to Exposure.
2. Set measurement parameters as described above.
3. Set Stop Mode to Manual, Timeout period, or Pulse count.
4. Accumulated energy exposure will be displayed on the screen, as well as elapsed time and
number of pulses measured.
2.5 Graphical Displays
To present measurements on a graduated scale (bargraph):
1. In Power or Energy mode, press Menu and enter Display.
2. Go to Graph Type and select Bargraph. Return to the main display screen.
3. To expand the bargraph scale ±5x of the present reading, press the Zoom button. Press Zoom
again to return the bargraph to full scale.
4. To subtract the background and set the current reading to zero, press the Offset button. Press
Offset again to cancel.
To simulate an analog needle:
1. In Power or Energy mode, press Menu and enter Display.
2. Go to Graph Type and select Needle. Return to the main display screen.
3. To expand the needle graph ±5x of the present reading, press Zoom. Press Zoom again to
return the needle range to full scale.
1919-R User Manual 11
Quick Reference
4. To subtract the background and set the current reading to zero, press the Offset button. Press
Offset again to cancel.
5. Press Persist to keep older measurements on the screen and to display numerically the Min
and Max values measured. Press Persist again to cancel.
To graph laser output over time:
1. In Power or Energy mode, press Menu and enter Display.
2. Go to Graph Type and select Line. Return to the main display screen.
3. Set the percentage range of the scale to be displayed to the desired setting.
4. Set the horizontal sweep time as necessary.
5. Press Reset to clear the Min/Max tracking and to restart the graph.
6. This is especially useful to fine-tune the laser power.
To display real-time statistics:
1. In Power or Energy mode, press Menu and enter Display.
2. Go to Graph Type and select Statistics. Return to the main display screen.
3. Displays Maximum, Minimum, Average, Standard Deviation, Total Readings, and Number
Overrange.
4. To subtract the background and set the current reading to zero, press the Offset button. Press
Offset again to cancel.
5. Press Reset to clear the statistics.
To set pass/fail tracking:
1. In Power or Energy mode, press Menu and enter Display.
2. Go to Graph Type and select Pass/Fail. Return to the main display screen.
3. Press the Upper and Lower buttons to set tolerance limits. If reading is out of range, an
appropriate warning will be displayed on the screen.
To display readings as bars with lengths proportional to the measurement:
1. In Power or Energy mode, press Menu and enter Display.
2. Go to Graph Type and select Pulse Chart. Return to the main display screen.
3. Set the percentage range of the scale to be displayed to the desired setting.
4. Set the number of readings to display as necessary.
5. Press Reset to clear the Min/Max tracking and to restart the graph.
6. This is especially useful when measuring pulses of low frequency lasers.
1919-R User Manual 12
Quick Reference
2.6 Math Functions
To apply a fixed offset to measurements:
1. Press Menu and enter Functions. Go to Fixed Offset.
2. Set the value to subtract from all subsequent measurements.
To apply a Scale Factor to measurements:
1. Press Menu and enter Functions. Go to Scale Factor.
2. Set to value by which to multiply all subsequent measurements.
3. Useful when working with beam splitters.
To normalize against a reference measurement:
1. Press Menu and enter Functions. Go to Normalize.
2. Set to reference value by which to normalize all subsequent measurements.
To display as power/energy density:
1. Press Menu and enter Functions. Go to Density.
2. Select beam shape and size.
3. Measurements will be shown as cm².
2.7 Logging Data to a File for Upload to PC
You can log your measurement data to a file for upload to PC by connecting an external storage
device to the USB port of the 1919-R meter. For details, see Logging Data to a File for Upload to
PC.
1919-R User Manual 13
3 Using the 1919-R Display Unit
This section describes the 1919-R display unit, its components, its functions independent of sensor
type, hardware functions, GUI, and keypad settings.
Topics include:
General Description
1919-R Display Unit Components
1919-R Hardware Components/Interfaces
1919-R Functions – Independent of Sensor Type
1919-R Screen Layout
3.1 General Description
The Newport 1919-R is a microprocessor-based Laser Power/Energy Meter that provides a broad
range of measurements, displays, and data handling options. It operates with Thermopile,
Pyroelectric, and Photodiode sensors. Taking advantage of smart connector technology, it is easyto-use—simply connecting the sensor configures and calibrates the 1919-R to operate with that
sensor. The sensor configuration and calibration information is stored in an EEROM in the sensor
connector plug. This means that when the sensor is plugged in, 1919-R automatically identifies the
sensor type, calibration, and configuration. You do not have to adjust anything. Sensors are hot
swappable. Even after the meter is switched on, you can remove one sensor and insert a different
one. 1919-R will recognize the switch and reconfigure itself according to the settings of the new
sensor.
The 1919-R’s 320x240 full-color screen enhances measurement readouts in ways that simple
monochrome displays cannot. The 1919-R can graph power or energy versus time. It displays
power measurements in both digital and analog form simultaneously and also has a needle type
display. It will also autorange, so you do not have to set scales; or it can manual range if you wish.
It will remember what mode you were using before you turned it off and will return to that mode
when turned on. You can zoom in on the present reading, or subtract the background. Although
the calibration information is stored in the smart connector, you can recalibrate from the screen
and store the new calibration in the sensor. You can also zero the 1919-R at the touch of a button.
1919-R is capable of logging data onto a USB Flash Drive (Disk On Key), as well as real-time
reporting of data via USB to Newport’s PMManager application to display and process the
information. 1919-R has RS232 capabilities as well. 1919-R also has the infrastructure for field
upgrading of the embedded software, should the need arise.
Above all, the 1919-R has advanced circuitry and digital signal processing for excellent sensitivity,
signal-to-noise ratio, accuracy, and response time. It also has special circuitry to reject
electromagnetic interference.
1919-R’s User Interface is intuitive. The keypad functionality is context-sensitive and functions
according to the needs of the present screen. Where necessary, on-screen help is provided as well,
so you should not have to refer to this manual very often.
1919-R User Manual 14
Using the 1919-R Display Unit
3.2 1919-R Display Unit Components
Figure 3-1 below displays the 1919-R display unit, displaying the main screen with some sample
measurements.
Figure 3-1 1919-R Meter/Display Unit – Front View
The 1919-R is equipped with:
LCD Display screen
Soft keys (under the display screen): The functions of the keys change as indicated by the
legend above each key. (The Menu key enables you to access Sensor, Display, Functions,
Instrument, Log, and Calibration settings. For sensor-specific details, see Thermopile Sensors,
Photodiode Sensors, Pyroelectric and Photodiode Energy Sensors.)
4 Navigation Keys and round Enter Key (under the soft keys, in the center of the unit)
Power On/Off/Backlight button
1919-R User Manual 15
Using the 1919-R Display Unit
Rear Panel with the following sockets: 12VDC, AN OUT, Sensor Input, RS232, USB OTG
Figure 3-2 1919-R Rear Panel
USB Port (on left side of the 1919-R meter)
Figure 3-3 USB Port (on Left Side) of 1919-R Meter
3.3 1919-R Hardware Components/Interfaces
This section describes the 1919-R hardware components and interfaces.
Topics include:
Sensor Input
LCD Display and Backlight
Soft Keys
Navigation Keys
On-Off Switch/Backlight Control
Charger Input
Analog Output
RS232 and USB Outputs
3.3.1 Sensor Input
The Sensor Input, located in the center of the 1919-R real panel, is the socket where you insert the
15 pin D type connector of the measuring sensor cable in order to connect the sensor to the
meter, as shown in Figure 3-4 below.
Figure 3-4 1919-R Rear Panel View
1919-R User Manual 16
Using the 1919-R Display Unit
3.3.2 LCD Display and Backlight
The 1919-R screen is a QVGA 320x240 pixel color TFT LCD. It can be driven in one of two full color
modes or in one.
The LCD backlight is actually a set of LEDs that illuminate the display from behind. Because the
1919-R uses a TFT color display, the backlight must be constantly on. It can be operated at full
intensity for full illumination; or at low or half-level to conserve power consumption
(recommended). The backlight level is toggled by a short press on the On/Off switch.
The 1919-R backlight consumes considerably less power than competing instruments, and
therefore it can operate from the battery even when the charger is not plugged in. Nevertheless,
since it does shorten the time between charges, it is recommended to set the backlight to less
than full intensity when the instrument is operated without the charger. (For further details, see
On-Off Switch/Backlight Control.)
3.3.3 Soft Keys
The Soft keys, located under the 1919-R screen, have functions defined by
the legend above each key. The legend usually indicates what will happen
when pressing the key. For example, if "Zoom" appears above a key, pressing that key will display
a zoom view of the screen. Some functions operate when the key is pressed and are canceled
when the key is pressed again. Those keys show reverse highlighting when operational. Pressing
the same key again cancels the operation and the highlighting.
Key Functions
The 1919-R has certain conventions as to the meaning of standard key strokes, including:
Highlighted item: The item that is presently active.
Menu: Provides access to Sensor, Display, Functions, Instrument, Log, and Calibration settings.
Start: Launches the active item.
Exit: Returns to the previous screen.
Cancel: Cancels the selection and returns to the previous screen, leaving the settings
unchanged.
3.3.4 Navigation Keys
The Navigation keys move to the next active item—left, right, up, and down. The round
button in the center is an Enter key to enter the screen of the item selected or when
finished, to leave that screen. Pressing the Enter key to leave the screen will save the
newly selected value for immediate use and will also save the change permanently.
3.3.5 On-Off Switch/Backlight Control
This section describes how to switch on/off the 1919-R and how to toggle the state of the
backlight.
To turn the 1919-R on:
Briefly press the On/Off switch (located under the Navigation keys, at the bottom
of the front panel). See Figure 3-1 above.
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Using the 1919-R Display Unit
The unit switches on, and the display appears. If no sensor is connected, the Instrument
Settings screen appears, displaying the configurations saved from the previous session (see
Instrument Settings). For example:
Figure 3-5 Instrument Settings Screen
If a sensor is connected, the appropriate default measurement screen will appear. For
example:
Figure 3-6 Needle Display with Persistence Enabled
To switch the 1919-R off:
Press the On/Off switch and hold it for ~ 3 seconds until the display blanks.
To toggle the state of the backlight of the 1919-R’s LCD:
Briefly press the On/Off switch after the 1919-R has been switched on. You can toggle
the backlight between full, half, and low illumination.
3.3.6 Charger Input
The 1919-R can be operated either by the internal battery or from an AC source with the charger
plugged in all the time. Plug the charger into the jack labeled "12VDC" on the rear panel (see
Figure 3-7 below). The battery will be charged at the same rate whether the 1919-R is switched on
or off, and whatever the backlight level. The battery will fully recharge in around 4-5 hours.
1919-R User Manual 18
Using the 1919-R Display Unit
Sensor Type
Backlight Level
Time Between Charges
Thermopile and Photodiode
Low
19 hours
Thermopile and Photodiode
Half
17 hours
Thermopile and Photodiode
Full
15 hours
Pyroelectric
Low
16 hours
Pyroelectric
Half
15 hours
Pyroelectric
Full
13 hours
Figure 3-7 1919-R Rear Panel View
Note: The charger circuit of the 1919-R is designed to allow the charger to be plugged in for an
extended period without causing damage to the battery.
The approximate time between charges is given in Table 3-1 below for various configurations:
Table 3-1 Sensor Charging Times
Note: Battery charge will be depleted faster if a USB Flash Drive (Disk on Key) is left plugged into
the 1919-R meter.
The battery charge is indicated by the icon. The battery charge is shown approximately by each
segment of the icon, for example, when 2 segments are shown, the battery is ½ full. When the
battery is charging, the segments turn on in sequence. When the battery is low, the charger should
be plugged in. While the unit will charge even while on and even with the backlight on, it will
charge fastest if the charger is left in while the unit is off.
3.3.7 Analog Output
The 1919-R provides an analog voltage output via the 2.5mm mono jack socket on the rear panel
marked “AN OUT” (see Figure 3-7 above). The 1919-R is supplied with the mating adapter plug
that connects to this socket. The analog output is useful for driving chart recorders and other
analog devices. The voltage is proportional to the reading on the display and scaled such that full
scale equals 1, 2, 5, or 10 volts as selected during setup.
To set the analog output voltage:
1. Use the up (↑) /down (↓) Navigation keys to select Max An. Output and press the Enter key.
2. Select the relevant voltage setting (1V, 2V, 5V, 10V).
3. Press the Enter key to exit this selection screen and save the new setting.
The analog output is driven through an impedance of 100ohm. For best accuracy, is recommended
to limit the external load to 100K (or larger). A smaller load (down to 1K) is possible, but may
result in loss of accuracy.
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Using the 1919-R Display Unit
For Thermopile and Photodiode sensors in power mode, the analog output is continually updated
15 times per second with the latest power measurement. For Thermopile sensors in single shot
energy mode, the analog output is held until the next pulse is measured. For Pyroelectric sensors,
the analog output is updated at up to 10 times per second with the latest pulse energy.
3.3.8 RS232 and USB Outputs
The 1919-R is equipped for either RS232 or USB communications with PC. The Unit is supplied with
a standard cable for USB communications and a custom cable for RS232 (see Figure 3-7 above).
You can change the RS232 baud rate with or without the sensor connected.
To set the RS232 baud rate for RS232 PC communication:
1. Disconnect the sensor and change the setting in the Instrument Settings screen.
Alternatively, when the sensor is connected to 1919-R, the RS232 Baud Rate can be configured
in the Instrument Settings screen, accessed by pressing the Menu button and selecting
Instrument.
2. Use the Navigation keys to select RS232 Baud Rate and press the Enter key to display the
options (115200, 57600, 38400, 19200).
3. Change the setting with the up (↑) /down (↓) Navigation keys and press the Enter key to
save.
3.4 1919-R Functions – Independent of Sensor Type
This section describes the functions available when no sensor is connected to the 1919-R.
Topics include:
Instrument Settings
Field Upgrade
Clock Settings
Zero Adjustments
Line Frequency
Language
Measurement Screens (Graph Types)
Color Scheme
3.4.1 Instrument Settings
When no sensor is connected, the 1919-R Instrument Settings screen is displayed. This gives you
the opportunity to change instrument settings including the RS232 baud rate, maximum analog
output, language, line frequency, color scheme, and date and time of the real time clock. The
Instrument Settings screen also shows the firmware version, serial number of the instrument, and
last calibration date. You can also re-zero the instrument. (Click the links to view more details.)
1919-R User Manual 20
Using the 1919-R Display Unit
To configure the instrument settings:
1. Disconnect the sensor.
The Instrument Settings screen is displayed.
Figure 3-8 Instrument Settings Screen
2. Use the up (↑) /down (↓) Navigation keys to select the parameter to change and press the
Enter key to display the options, as described in Table 3-2 below. (These instrument settings
are also available when a sensor is connected, and you press the Menu button and select
Instrument.)
3. Change the setting with the up (↑) /down (↓) Navigation keys and press the Enter key to
save.
The 1919-R automatically saves the current settings for the next power up.
1919-R User Manual 21
Using the 1919-R Display Unit
Parameter
Description
RS232 Baud
Set the baud rate for RS232 PC communication. Options
include:
115200
57600
38400
19200
Max An. Output
Select the voltage of analog output for full scale measurement.
Options include:
1V
2V
5V
10V
Language
Set desired instrument startup language. Options include:
English
Japanese
Russian
Chinese
Line Frequency
Set local line frequency to screen out electrical noise from the
mains supply (to prevent any impact on the measurements).
Options include:
50Hz
60 Hz
Color Scheme
Set to full color functionality or to color pair that best matches
the protective goggles in use. Options include:
Black/White
Blue/Black
Red/Black
Green/Black
Color 1
Color 2
Date and Time
Set the real-time clock of the instrument, in date/time format:
MM/DD/YYYY H:mm.
Table 3-2 1919-R Instrument Settings
1919-R User Manual 22
Using the 1919-R Display Unit
3.4.2 Field Upgrade – Updating the 1919-R Firmware
1919-R has all of the necessary infrastructure for field upgrading of the embedded software,
should the need arise. This is done through the USB OTG port that is found on the rear panel of
the instrument (see Figure 3-7 above).
To update the 1919-R firmware:
1. Download the latest 1919-R firmware upgrade package from the Newport website:
http://www.newport.com/Handheld-Power-and-Energy-Meters/6770602/1033/category.aspx
and copy it to your target directory.
2. Run the upgrade executable and follow the on-screen instructions.
3.4.3 Clock Settings
The 1919-R is equipped with a real time clock which shows the date and time. This clock also
allows the 1919-R to query the sensor attached and notify you if the sensor is due for calibration.
You can change the date and time.
To set the real-time clock of the instrument:
1. Disconnect the sensor.
2. Use the up (↑) /down (↓) Navigation keys to select/highlight the Date and Time parameter
and press the Enter key.
Figure 3-9 1919-R Field Upgrade Wizard
Figure 3-10 Real Time Clock Settings
1919-R User Manual 23
Using the 1919-R Display Unit
3. Use the left (←)/right (→) Navigation keys to scroll through and select/highlight each of the
Month, Day, Year, Hours, and Minutes fields (MM/DD/YYYY H:mm).
4. Change the setting with the up (↑) /down (↓) Navigation keys and press the Enter key to
save.
3.4.4 Zero Adjustments
In the 1919-R, all adjustments, including zeroing internal circuits, are done from the software. This
ensures simple and accurate realignment. It is recommended to re-zero the 1919-R every 2
months for best performance.
To zero the instrument:
1. Disconnect the sensor, turn the instrument off and then back on again, so the 1919-R can
identify that no sensor is connected. An "Initializing" message will be displayed.
2. Let the 1919-R run for at least 30 seconds before performing zero adjustment. Make sure the
sensor is in a quiet environment (without electrical noise) and not subject to pulsed radiation.
3. Press Zero and Start. Wait until “Zeroing completed successfully” appears.
4. Press Save to save the new zero values to the instrument.
5. Press Exit to return to the main screen.
For Thermopile Sensors only:
For best results with Thermopile sensors, it may be necessary to do the procedure once with the
sensor disconnected, then afterwards again with the sensor connected.
To zero the instrument against Thermopile sensors:
1. After completing steps 1-4 above, connect the sensor and make sure it is at room temperature
and well shielded from any stray thermal power. It is recommended to lay the sensor with the
absorber face down on the table.
2. Switch the instrument off then on again with the sensor connected.
3. Press Menu and select Instrument. Press Zero and Start. Wait until “Zeroing completed
successfully” appears.
4. Press Save to save the new zero values to the instrument.
5. Press Exit to exit this screen and return to the previous one.
For Pyroelectric and Photodiode Energy Sensors:
In addition to zeroing the meter, as described previously, it is important to zero the meter against
the sensor you are using the first time. After you have done zeroing, you do not have to do it again
when used with the same type of meter. If you have zeroed it against a different type of meter,
then a different value has been saved and therefore when used with this 1919-R, you should zero
it again.
1919-R User Manual 24
Using the 1919-R Display Unit
3.4.5 Line Frequency
Setting Line Frequency correctly removes electrical noise that may impact the measurements.
To set line frequency:
1. In the main screen, use the Down (↓) Navigation key to select Line Frequency and press the
Enter key.
2. Set to 50Hz or 60Hz, depending on the electrical power grid of the area that you are in.
3. Press the Enter key to save the new setting.
3.4.6 Language
The 1919-R display can be configured to one of several languages (English, Japanese, Russian, or
Chinese).
To set the user interface language for the instrument:
1. In the main screen, use the Down (↓) Navigation key to select Language and press the Enter
key.
2. Set to English, Japanese, Russian, or Chinese.
3. Press the Enter key to save the new setting.
Note: If you mistakenly save the Japanese (or any foreign) language as the 1919-R startup
language, you can revert to English.
To revert to English (from a foreign language):
1. Disconnect the sensor from 1919-R.
2. Turn the 1919-R off and on again. The Instrument Settings screen appears (titled “head
disconnected” in Japanese).
3. Press the Down (↓) Navigation key 2 times to select/highlight the “Language” option.
4. Press the Enter key and select English (at the top of the language list).
Press the Enter key to save English as the startup language.
Note: The current settings are automatically saved for the next time 1919-R is turned on.
1919-R User Manual 25
Using the 1919-R Display Unit
Graph Type
Description
Sample Figure
Bargraph
Ruler-like display in which the graph is filled
proportionally to the reading’s being a
percentage of full scale. Presents measurement
on a graduated scale. Available when measuring
laser power or energy.
Press the Zoom key to zoom in on a
smaller section of the range when
readings are fluctuating slightly.
If you notice that noise has impacted the
measurement, you can press the Offset
key to remove it from the measurement.
Figure 3-11 Bargraph
Needle
Simulates an analog display, similar to the style
of an analog voltmeter or a car’s speedometer.
Available when measuring power or energy.
Press the Zoom key to zoom in on a
smaller section of the range when
readings are fluctuating slightly.
If you notice that noise has impacted the
measurement, you can press the Offset
key to remove it from the measurement.
Press the Persist key to continue to
display previous readings as well as to
show the minimum and maximum
measurements.
Figure 3-12 Needle with
Persistence Enabled
Line
Graph laser output as a function of time. Useful
for technicians performing laser alignment that
want to see the results of their experimenting
graphically as well as to be shown the maximum
laser power attained.
Figure 3-13 Line Graph
Statistics
Large numeric readout with statistics displayed
as well.
Figure 3-14 Statistics
Display
3.4.7 Measurement Screens (Graph Types)
The 1919-R measurement screens are available in a variety of graphical displays, as described in
Table 3-3 below (click the links to view more details):
Table 3-3 1919-R Measurement Screens (Graph Types)
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Using the 1919-R Display Unit
Graph Type
Description
Sample Figure
Pass/Fail
Test for measurements outside the user-defined
range of acceptable readings. Configurable
upper and lower limits. Useful for final
inspection testing, other aspects of Production
Q/A, or field inspection of equipment.
If the measurement is out of range, OVER or
UNDER will be displayed on the screen. If the
Color Scheme has been set to one of the full
color options, then this will be displayed in RED,
along with the reading itself. When within range,
the display will be normal, with the results
shown in GREEN, if one of the color options has
been selected.
Figure 3-15 Pass/Fail
Display
Exposure
Sum of the total energy of a series of
measurements over a given time period or
number of pulses (pulse count is relevant for
energy sensors only). This gives the total energy
"exposure" over that time period. For example,
if the laser is pulsing at 30 times/sec at 1mJ per
pulse and you measure the exposure over 20
seconds, then the total exposure is 30 x 1 x 20 =
600mJ.
Figure 3-16 Exposure
Measurement
Pulse Chart
Displays a graph of pulses as they occur. Displays
the readings as bars with lengths proportional to
the measurement. Not time based and is most
applicable when the data flow is not necessarily
periodic. Ideal when measuring low frequency
lasers.
Figure 3-17 Pulse Chart
Figure 3-18 Thermopile Sensor
(Monochrome)
Figure 3-19 Photodiode Sensor
(Monochrome)
Figure 3-20 Pyroelectric Sensor
(Full Color)
3.4.8 Color Scheme
You can configure the 1919-R for full color or monochrome functionality. Choose full color to make
use of special color enhancements. Choose one of the monochrome schemes for use with
protective goggles that filter out visible wavelengths.
Screen captures of the 1919-R in this manual are shown in the various color schemes. For example,
the following sensor displays:
1919-R User Manual 27
Using the 1919-R Display Unit
Full Color
To set the color scheme of the main measurement displays to full color:
1. Connect the relevant sensor.
2. Press the Menu button, and use the Navigation keys to select Display and press the Enter key.
3. Use the Navigation keys to select Color Scheme and press the Enter key.
4. Select the relevant full color scheme option:
Color 1: Yellow text on dark blue background
Color 2: Black text on sky blue background
5. Press the Enter key to save the setting.
For both of these full color schemes, warnings will be displayed in red, selection windows (for
example, range, average, laser) will be pink, and modification windows will be white.
Figure 3-21 Sample Full Color Scheme Display with Pink “Range” Selections
Monochrome
Monochrome schemes are for use with lasers that demand protective glasses that filter out colors
in the visible part of the wavelength spectrum. These color schemes apply to all of the screens. All
color-enhanced features of the 1919-R will not be functional in any of the monochrome screens.
Follow the procedure above to set the color scheme and choose one of the following
monochrome schemes:
Black/White: Black text on white background
1919-R User Manual 28
Using the 1919-R Display Unit
Blue/Black: Sky blue text on black background
Red/Black: Red text on black background
Green/Black: Green text on black background
See Figure 3-18, Figure 3-19, and Figure 3-20 above which show the sensors in monochrome and
full color displays.
3.5 1919-R Screen Layout
The 1919-R screen display is carefully designed to provide easy reading of the laser measurement,
quick access to configuration parameters, as well as the ability to set up for more advanced work.
Figure 3-22 below displays the layout of a typical 1919-R measurement screen.
Figure 3-22 1919-R Measurement Screen Layout
The 1919-R measurement screen comprises:
Configuration parameters for laser measurements (at the top), including “Mode” (on upper
left) for setting the measurement mode (for example, Power, Energy, and so on). The
configuration settings are sensor specific and saved in the sensor’s memory.
Measurement display area (in the middle), varies per the selected display type (for example,
large numeric readout with real-time statistics).
Sensor name and serial number (upper right).
Soft keys (on the bottom) for additional display functionality. (For example, press the Menu
key to access additional 1919-R functions including logging, pass/fail inspection, and math
processing. Press Offset to remove background noise from the measurement. Press Reset to
clear the statistics and start over.)
1919-R User Manual 29
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