ScienTECH Vector Series User manual

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PN 10795T 1
Vector™ Series
Models H410 &
H410D
Laser Power and
Energy Meters
Operating Manual
Thank you for choosing a Scientech Vector™calorimeter detector. Scientech’s employees are pleased to
provide you with a product designed for years of reliable and accurate service. Please read this operating
manual before using your detector and power meter. This reference information will allow you to fully
understand the capabilities of the product. The detector is intended to be used only in the manner outlined
in this manual. Operation not within specifications for the product may cause product damage.

PN 10795T 2
Table of Contents
Detector Operating Parameters....................................................................................................................................................3
Environmental Requirements ......................................................................................................................................................4
CE Mark Certification.........................................................................................................................................................4
Vector™ H410 Power meter Specifications................................................................................................................................4
Unpacking....................................................................................................................................................................................4
Changing or Installing Batteries ..................................................................................................................................................6
Quick Setup .................................................................................................................................................................................7
Operating Procedures...................................................................................................................................................................9
Using the H410 with VectorPyroelectric Detectors........................................................................................................9
Correcting Pyroelectric Detector Operating Parameters for Use at Different Wavelengths .............................................18
Using the H410 with VectorSeries Calorimeter............................................................................................................19
Correcting FX Calorimeters Operating Parameters for Use at Different Wavelengths.....................................................28
Using the H410 with Scientech Photodiode Detectors......................................................................................................29
Calibration of Vector™ Calorimeters........................................................................................................................................34
Calibration of 25mm & 50mm VectorCalorimeters Using Electric Substitution Heating............................................34
Calibration of Large Aperture Calorimeters Using Electric Substitution Heating............................................................35
Calibration with an Interface Module and H410 Power Meter .........................................................................................35
Calibration without an Interface Module and H410 Power Meter ....................................................................................36
Detector Operation Without a Power Meter..............................................................................................................................38
Pyroelectric Detectors.......................................................................................................................................................38
Vector™Calorimeters........................................................................................................................................................38
Operation of Vectorand Large Aperture Calorimeters with a Digital Volt Meter.................................................................39
Operation of Vectorand Large Aperture Calorimeters with an Analog Recorder ................................................................39
Calorimeter Response:...........................................................................................................................................39
Numerical Integration:...........................................................................................................................................40
Initial Voltage Interpolation: .................................................................................................................................41
Peak Voltage Estimate:..........................................................................................................................................41
Scientech Photodiode Detectors ................................................................................................................................................42
Operation of Scientech Photodiode Detectors with a Digital Volt Meter ........................................................................42
Scientech Calibration Service....................................................................................................................................................42
Limited Warranty.......................................................................................................................................................................43
Return Material Procedure.........................................................................................................................................................43
Disposal of Electronic Equipment .............................................................................................................................................44
Schematics:................................................................................................................................................................................45

PN 10795T 3
DETECTOR OPERATING PARAMETERS
All detectors are calibrated at a specific wavelength and the detector’s operating parameters are derived
for that wavelength. This information is recorded below and on the detector’s serial tag. When a detector
is used at a wavelength other than the calibration wavelength some of the operating parameters may need
to be adjusted. For specific instructions please refer to the Operating Procedures section for the type of
detector you are using.
Power Meter Serial Number___________________
Calorimeter 1: Calorimeter 2:
Model No: ___________ Model No: __________
Serial No: ___________ Serial No: __________
Group No: ___________ Group No: __________
Calibration Wavelength ___________nm or µm Calibration Wavelength: __________nm
or µm
Output Sensitivity (S): ___________V/W Output Sensitivity (S): __________V/W
Time Constant (1/e): ___________sec. Time Constant (1/e): __________sec.
Calibration Temp: ___________°C Calibration Temp: __________°C
Calibration Humidity: ___________%R.H. Calibration Humidity: __________%
R.H.
Sub. Heater Resistance (Rc): ___________ohms Sub. Heater Resistance (Rc): __________ohms
Sub. Heater Voltage (Vh): ___________volts Sub. Heater Voltage (Vh): __________volts
Sub. Heater Wattage (Wh) ___________watts Sub. Heater Wattage (Wh): __________watts
Pyroelectric Detector 1:
Model No: __________
Serial No: __________
Group No: __________
Calibration Wavelength: __________nm or µm
Output Sensitivity:1__________V/J or __________V/mJ S_________ I__________ L_________
Output Sensitivity:1V/J (Scope)
Calibration Temp: __________°C Calibration Humidity: ___________%R.H.
Pyroelectric Detector 2:
Model No: __________
Serial No: __________
Group No: __________
Calibration Wavelength: __________nm or µm
Output Sensitivity:1__________V/J or __________V/mJ S_________ I_________ L__________
Output Sensitivity: V/J (Scope)
Calibration Temp: __________°C Calibration Humidity: ___________%R.H.
The V/J is used to calibrate the power meter to a known NIST traceable standard. This is the value the
meter must use.
The V/J (Scope) is the “true” Volts per Joule as seen at an oscilloscope.

PN 10795T 4
ENVIRONMENTAL REQUIREMENTS
This product is intended for indoor use at altitudes up to 2000 meters, Pollution Degree 2 in accordance
with IEC 664 and transient overvoltages according to Installation Categories (Overvoltage Categories) II.
Note that each of the above detectors will not pass the IEC 801 Publication, Part 3, Radiated
Electromagnetic Field Requirements. The system, meter and detector, is designed to measure radiation
within the test's radiation band. The detectors were held outside the radiated electromagnetic field during
this test. It is up to the user to be aware of RF fields present during measurements and their effects if any
on those measurements.
CE Mark Certification
All of the power meters listed in this manual have been certified for the European CE mark.
VECTOR™H410 POWER METER SPECIFICATIONS
The Models H410 and H410D are identical to each other in every respect except the analog meter. The
H410 has both an analog and digital display. The H410D has only a digital readout. All references to the
H410 are intended to include the H410D except where noted. Also, the words "indicator" and "meter" are
synonymous. Specifications are summarized in Table 1.
UNPACKING
The meter, detectors, and accessories are shipped in custom packing materials. All packing materials
should be saved for future damage free shipments.
If using the AC battery charger, verify that the electrical outlet is compatible with the charger. When
using a charger, the H410 will operate with or without batteries installed. However, if batteries are
installed, they must have a minimum charge of approximately 1 hour before the H410 will turn on, even
if the AC battery charger is used.
The H410 also runs off of four AA rechargeable batteries, which provide approximately 6 hours of usage
before requiring recharge. To recharge the batteries, connect the charger to the power meter and the
appropriate electrical outlet. Allow 16 to 20 hours for a full charge.

PN 10795T 5
Table 1. H410 Specifications
Model
Handheld: H410
H410D
Display
4 Digit LCD with analog indicator
4 Digit backlight, LCD
Modes, Power or Energy
Pyroelectric: energy, average energy,
power, statistics
Calorimeter: energy, power, calibration
Pyroelectric: energy, average energy,
power, statistics
Calorimeter: energy, power, calibration
Pyroelectric Statistics Mode
Pulses collected, average energy, min
energy, max energy, standard deviation,
coefficient of variation
Pulses collected, average energy, min
energy, max energy, standard deviation,
coefficient of variation
For 25mm Calorimeters:
Power Full Scale Ranges
Energy Full Scale Ranges
10mW, 100mW, 1W, 10W, Auto
10mJ, 100mJ, 1J, 10J
10mW, 100mW, 1W, 10W, Auto
10mJ, 100mJ, 1J, 10J
For 50mm Calorimeters:
Power Full Scale Ranges
Energy Full Scale Ranges
300mW, 3W, 30W, Auto
300mJ, 3J, 30J
300mW, 3W, 30W, Auto
300mJ, 3J, 30J
For Pyroelectric Detectors:
Power Full Scale Ranges
Energy Full Scale Ranges
3mW, 30mW, 300mW, 3W, Auto
3mJ, 30mJ, 300mJ, 3J
3mW, 30mW, 300mW, 3W, Auto
3mJ, 30mJ, 300mJ, 3J
For HR Pyroelectric Detectors
Not supported
Not supported
For 100mm Calorimeter:
Use Interface Module, PN 10735
Use Interface Module, PN 10748
300mW, 3W, 30W, Auto or 300mJ, 3J,
30J
500mW, 5W, 50W, Auto or 1.5mJ, 15J,
150J
300mW, 3W, 30W, Auto or 300mJ, 3J,
30J
500mW, 5W, 50W, Auto or 1.5mJ, 15J,
150J
For 200mm Calorimeter:
Use Interface Module, PN 10747
Use Interface Module, PN 10769
300mW, 3W, 30W, Auto or 300mJ, 3J,
30J
1W, 1W, 100 W, Auto or 3J, 30J, 300J
300mW, 3W, 30W, Auto or 300mJ, 3J,
30J
1W, 1W, 100 W, Auto or 3J, 30J, 300J
Calorimeter max repetition rate,
power mode
Unlimited
Unlimited
Calorimeter max repetition rate,
energy mode
1 pulse every 60 to 90 sec, calorimeter
dependent
1 pulse every 60 to 90 sec, calorimeter
dependent
Pyroelectric, max repetition rate
collecting data in statistics mode
300 pps
300 pps
Response time for calorimeter,
power mode
3-10 seconds depending on calorimeter
3-10 seconds depending on calorimeter
Response time for calorimeter,
energy mode
1-3 seconds depending on calorimeter
1-3 seconds depending on calorimeter
Operating temperature
5 to 40 oC
5 to 40 oC
Power Requirements
120 Volts, 60 Hz ± 10 % or
220 Volts, 50 Hz ± 10 %
120 Volts, 60 Hz ± 10 % or
220 Volts, 50 Hz ± 10 %
Rechargeable Batteries
4 Ni-MH or NI-Cad, included
4 Ni-MH or NI-Cad, included
Dimensions D x L, inches
cm
8.25 x 4.0 x 1.5
20.96 x 10.16 x 3.81
8.25 x 4.0 x 1.5
20.96 x 10.16 x 3.81
Weight, lbs
kg
1.23
0.56
1.23
0.56
Other Specs:
Stand option: VHSTAND
Stand option: VHSTAND

PN 10795T 6
CHANGING OR INSTALLING BATTERIES
Warning: Use only Ni-MH or NI-Cad rechargeable batteries. If non-rechargeable batteries are used with
the battery charger the batteries may burst and cause damage to you or the power meter.
Note: Dispose of used batteries according to local regulations.
To install batteries refer to Figure 2 and proceed as follows:
1. Loosen the screw holding the battery compartment cover.
2. Remove the old batteries if necessary.
3. Observing the polarity, install the new batteries.
4. Replace the cover and charge the batteries for 16 to 20 hours.
Figure 1. H410 Meter Front Figure 2. H410 Meter Back

PN 10795T 7
QUICK SETUP
Note: For detailed instructions for each type of detector, refer to the Operating Procedures section.
1. Turn On the Meter:
Note: For the most accurate measurements possible, the H410 should be turned on and warmed up for 30
minutes.
Slide the ON/OFF switch, located on the upper right side of the H410, to the ON position. The power
meter will immediately turn on in the operational state last used. If you purchased the H410 with one
detector, this detector’s operating parameters will be in the power meter’s memory and you are ready to
take measurements.
If you purchased more than one detector with the H410, you must make sure the operating parameters for
the detector you plan to use are in the power meter’s memory. For detailed instructions please refer to the
Operating Procedure section for that type of detector.
2. Turn the Analog Needle On or Off (does not apply to the H410D)
To turn the analog meter on or off, press and keep holding down the ON/SELECT button. Then release
the button after the meter appears or disappears.
3. Zero the Analog Needle (does not apply to the H410D)
Refer to Figure 1. The black slotted button located just below the display allows screwdriver adjustment
to set the analog needle to zero. This adjustment should be made before connecting the detector.
4. Connect a Detector
Note: Only one detector should be plugged in at any time.
Refer to Figure 1. Slide the CAL/PYRO switch, located on the upper left side of the H410, into the CAL
(up) position for use with Vector calorimeters and photodiode detectors or into the PYRO (down) position
for use with Vector pyroelectric detectors.
A 3 meter mini-DIN type cable with "D" shaped connectors comes with Vector and Large Aperture
calorimeters and Scientech photodiode detectors. A 3 meter BNC type cable comes with Vector
pyroelectric detectors. Plug in the detector’s cable into the appropriate connector on the H410. Detectors
have a 1/2" diameter mounting post hole for installing a detector post. Mounting bases and posts are
available at Scientech to attach the detector to a working surface.

PN 10795T 8
5. Select a Range
Press the RANGE button, the analog scale (if active) will disappear, then the H410 will begin cycling
through the ranges available for the detector you have connected. Press the ON/SELECT button when
the range you desire appears in the display.
6. Select a Mode
The MODE button allows selection of the type of measurement to be made (watts, joules, etc). The
different modes available are:
When configured for a pyroelectric detector: Energy (J), Avg. Energy (J AVG), Power (W),
Configuration (CAL) and Time Out (tO).
When configured for a calorimeter: Energy (J), Power (W), Configuration (CAL), Time Out (tO) and
Calorimeter Delay (cd).
When configured for a photodiode detector: Power (W), Configuration (CAL) and Attenuation (ATTN).
The preceding list of modes in bold type represents the measurement modes of the H410. These modes
are discussed in this Quick Setup section. The modes in normal type allow you to customize the H410’s
set up for different detectors and are discussed in detail in the Operating Procedure section for each
detector.
Press the MODE button to start the menu cycle. Press the ON/SELECT button when the measurement
mode you desire appears in the display.
7. Zero the display
If you have chosen the calorimeter Power (W) mode or are using a photodiode detector you must zero the
display by pressing the CANCEL button before any measurements are taken. It is not necessary to zero
the display in any other mode of operation, but if you choose to do so no errors will be introduced.
8. Take your measurement
Direct the laser beam onto the absorbing surface of the detector.

PN 10795T 9
OPERATING PROCEDURES
Using the H410 with VectorPyroelectric Detectors
Pyroelectric detector models P25, P50, SP25 and SP50 are coated with a special black absorbing material
which provides a very flat spectral response over a broad wavelength band. Pyroelectric detector models
PHD25, PHDX25, PHDX25UV, PHD50, PHDX50, PHDX50UV, SPHD25, and SPHD50 are coated with
a special high damage absorbing material which provides absorption over a broad wavelength band.
Models PHF25, PHF50, SPHF25 and SPHF50 have a partially absorbing, partially reflecting chromium
coating. The relative spectral responses of these detectors are shown in the following graph. Please be
aware of the absorption differences between the detector’s calibration wavelength and your operational
wavelength. Detailed absorption information is contained in the charts at the end of this manual.
RELATIVE SPECTRAL RESPONSE
20
30
40
50
60
70
80
90
100
0.1 110 100
WAVELENGTH [microns]
PERCENT ABSORPTION
P and SP
HR-P
PHD, PH
and SPH
HR-PH
PHF and SPHF
*HDX Limited to 0.4 to 2.0
i
PHDXUV
Figure 3. Pyroelectric Detector Spectral Response
Before using your Vector power meter, please review the energy density formulas given in the chart at the
front of this manual. Familiarize yourself with all of the specifications of the detector models which you
are using. A damage test slide is provided with each P and PHF type detectors, but not with PHD type
detectors. Fire the beam at the test slide before using the detector to be sure you are operating under safe
conditions.
Note: The trigger threshold of the H410 is 7 % of full scale.
1. To Turn On the Meter
Note: For the most accurate measurements possible, the H410 should be turned on and warmed up for 30
minutes.

PN 10795T 10
Slide the ON/OFF switch, located on the upper right side of the H410, to the ON position. The power
meter will immediately turn on in the operational state last used. If you purchased the H410 with one
detector, this detector’s operating parameters will be in the power meter’s memory and you are ready to
take measurements.
If you purchased more than one detector with the H410, you must make sure the operating parameters for
the detector you plan to use are in the power meter’s memory. For detailed instructions please refer to the
operating parameters listed on page 2 and the following procedure.
2. Turn the Analog Needle On or Off (does not apply to the H410D)
To turn the analog meter on or off, press and keep holding down the ON/SELECT button. Then release
the button after the meter appears or disappears.
3. Zero the Analog Needle (does not apply to the H410D)
Refer to Figure 1. The black slotted button located just below the display allows screwdriver adjustment
to set the analog needle to zero. This adjustment should be made before connecting the detector.
4. To Connect a Pyroelectric Detector
Only one detector should be plugged in at any time.
Refer to Figure 1. Slide the CAL/PYRO switch, located on the upper left side of the H410, to the PYRO
(down) position. A 3 meter BNC type cable comes with Vector pyroelectric detectors. Connect the cable
to the power meter’s BNC connector.
5. To Configure the H410 for a Pyroelectric Detector
Note: Some of the menu selections are skipped in this section. They are discussed in detail in later
sections.
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the display
blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings are saved they will
be lost.
The operating parameters for the pyroelectric detector you are going to use must be entered into the H410’s
memory. First the output sensitivity of the detector’s crystal is entered, then the speed, based of the
detector’s type of absorbing surface is entered.
To enter into the configuration mode:
A. Press the MODE button. A menu cycle of J, AVG J, W, CAL and tO will begin.

PN 10795T 11
B. Press the ON/SELECT button when “CAL” appears. A menu cycle of CAL 1, CAL 2, Attn and
SPd will begin.
C. Press the ON/SELECT button when “CAL 1” appears. The current V/J output sensitivity will be
displayed and the “SET CAL” annunciator will flash.
D. Use the RANGE (count up) button to increase the value or the MODE (count down) to decrease
the value to enter the V/J value listed on the pyroelectric detector’s serial tag.
E. Press the ON/SELECT button to exit this menu. The power meter will return to the last operational
state.
F. Press the MODE button to return to the menu in step A.
G. Press the ON/SELECT button when “CAL” appears. A menu cycle of CAL 1, CAL 2, Attn and
SPd will begin.
H. Press the ON/SELECT button when “SPd” appears. Choose between “hF” for high frequency
absorbers and “bL” for black coated absorbers according to the Table 2 chart.
Table 2. Mode Selection Criteria
Type of Absorber
Pyroelectric Detector Model
Type
Speed Selection
Black Coated
P, SP, PHD and SPHD
bL
High Frequency
PHF and SPHF
hF
I. Press the ON/SELECT button to select the appropriate “SPd” setting. The power meter will return
to the last operational state.
J. Press and hold the OFF/CANCEL button until the display blanks to save the settings.
K. Press the ON/SELECT button to turn the H410 back on.

PN 10795T 12
6. To Select a Range
Note: AUTO range may be selected if the energy levels of repetitive pulses are to be measured. However,
do not select AUTO range if you want to measure single pulse energy or pulses running at repetition rates
lower than 10 Hz.
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the display
blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings are saved, they will
be lost.
A. Press the RANGE button. The analog scale (if active) will disappear and AUTO, 3m, 30m, 300m
and 3 will cycle through the display.
B. To select a range, press the ON/SELECT button when the range you desire appears in the display.
The H410 will return to the last operational state.
C. Press and hold the OFF/CANCEL button until the display blanks to save the setting.
C. Press the ON/SELECT button to turn the H410 back on.
7. To Select a Measurement Mode
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the display
blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings are saved, they will
be lost.
Available measurement modes are:
Energy (J), Avg
Energy (J AVG), and
Power (W)
8. To Measure Energy (J)
Note: The update rate of the display is 20Hz.
The energy mode displays the energy of each pulse of a repetitively pulsed laser or a single pulse.

PN 10795T 13
i. Press the MODE button to start the menu cycle of J, AVG J, W, CAL and tO.
ii. Press the ON/SELECT button when the J annunciator appears on the display.
iii. The energy level of each laser pulse will be displayed on the LCD.
iv. Press and hold the OFF/CANCEL button until the display blanks to save the setting.
v. Press the ON/SELECT button to turn the H410 back on.
9. To Measure Average Energy (J AVG)
Note: The maximum repetition rate for average energy is 300Hz.
The average energy mode displays an average of a selectable number of pulses from 2 to 9999.
i. Press the MODE button to start the menu cycle of J, AVG J, W, CAL and tO.
ii. Press the ON/SELECT button when the AVG J annunciators appear on the display. The
number of pulses to be averaged will now appear in the display.
iii. To change the number of pulses to be averaged, press the RANGE (count up) and/or MODE
(count down) buttons until the desired number of pulses to be averaged appears in the display.
iv. Press the ON/SELECT button to select the pulse population. The average energy of the number
of pulses you selected will be displayed after the number of pulses entered in step iii is received
by the pyroelectric detector. This is not a running average, but is the average for the pulse
population selected in step iii. Nothing is displayed until the full pulse population is delivered.
This average is displayed until another full population of pulses is delivered at which time the
display is updated with the average for that population of pulses.
v. Press and hold the OFF/CANCEL until the display blanks to save the setting.
vi. Press the ON/SELECT button to turn the H410 back on.

PN 10795T 14
10. To Measure Average Power (W)
Note: The maximum repetition rate for average power is 300Hz. The minimum repetition rate for average
power is 10Hz.
Note: The average power mode displays the average power (watts) of repetitively pulsed lasers.
Pyroelectric detectors will not work with continuous wave lasers.
The average power mode displays the average power of repetitively pulsed lasers.
i. Press the MODE button to start the menu cycle of J, AVG J, W, CAL and tO.
ii. Press the ON/SELECT button when the W annunciator appears on the display.
iii. The average power will be displayed.
iv. Press and hold the OFF/CANCEL until the display blanks to save the setting.
v. Press the ON/SELECT button to turn the H410 back on.
11. To Measure a Statistical Run of Energy Pulses
Note: Do not use AUTO range when making a statistical run.
Note: Do not go from the Average Power Mode to Stats since the range will be too high. Select the range
manually.
Note: Each time a new stats run begins, data from the previous run is lost.
Note: To exit the statistical mode at any time, press the OFF/CANCEL button.
Note: Statistics mode can collect data at repetition rates of up to 300 Hz depending on the detector model.
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the display
blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings are saved they will
be lost.
The statistics mode will collect data on a pulse population of up to 1000 pulses. At your prompting, the
power meter will display the number of pulses delivered, average energy, minimum energy, maximum
energy, standard deviation, and coefficient of variation. When the statistics mode is selected, the energy
mode is automatically activated regardless of the mode previously selected. Select the appropriate range
for the pulse energy level to be measured. It is very important to select the most appropriate range. If you
have selected a manual range and the laser pulse(s) has overflowed the maximum energy of the range, OF
will be displayed when the data is recalled. You should then select a higher range.

PN 10795T 15
To enter into the statistics mode:
A. Press the RANGE and MODE buttons simultaneously. The number of pulses in the last statistics
run and a flashing SET annunciator will appear in the display.
B. Use the RANGE (count up) and MODE (count down) buttons to change the display to the desired
number of pulses to include in the statistics run (up to 1000).
C. Press the SELECT button to enter the pulse population to memory. The display will blank and a
flashing STATS annunciator will appear.
D. Press the MODE button to begin the run. The STATS annunciator will stop flashing. The power
meter will automatically stop once the data has been collected.
D. Press the ON/SELECT button to recall the data to the display one item at a time. Each time the
ON/SELECT button is pressed the following statistical calculations will be sequentially displayed:
Number of pulses collected
Average energy (AVG)
Minimum energy (MIN)
Maximum energy (MAX)
Standard deviation (SIGMA)
Coefficient of variation (CV%)
F. Press the ON/SELECT button one more time to return to step D for a new stats run. The flashing
STATS annunciator indicates that the H410 is ready for a new run. Each time a new run begins
the data from the previous run is lost.
G. Press the OFF/CANCEL button to return the power meter to the mode of operation in effect prior
to statistics mode.
H. Press and hold the OFF/CANCEL until the display blanks to save the setting.
I. Press the ON/SELECT button to turn the H410 back on.
12. To Perform a Transfer Calibration

PN 10795T 16
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the display
blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings are saved they will
be lost.
You can transfer a calibration from a calorimeter to a Vector pyroelectric detector using the Transfer
Calibration function of the H410. This function allows adjustment of the output sensitivity of your Vector
pyroelectric detector in combination with your H410 meter in order to match the average power reading
from the H410 to that of a NIST certified system. Typically, a 50/50 beam splitter is used with the Vector
pyroelectric detector to be calibrated in one beam path and the NIST certified calorimeter in the other
beam path.
To enter into the transfer calibration mode:
A. Press the MODE button to start a menu cycle of J, AVG J, W, CAL and tO.
B. Press the ON/SELECT button when the CAL annunciator appears. A second menu cycle of CAL
1, CAL 2, Attn and SPd will start.
C. Press the ON/SELECT button when the CAL 2 annunciator appears. The average power (W)
mode will automatically be selected and SET CAL will flash.
D. Direct the laser beam through the calibrated beam splitter onto both the pyroelectric detector and
the calorimeter transfer standard.
E. Adjust the power reading of the H410 by using the RANGE (count up) and MODE (count down)
buttons to agree with the transfer standard.
F. Press the ON/SELECT button. The power meter is now calibrated and will return to the last
operational state.
G. Press and hold the OFF/CANCEL until the display blanks to save the setting.
H. Press the ON/SELECT button to turn the H410 back on.

PN 10795T 17
13. Attenuation Factors
Note: You must enter an attenuation factor of 1.0 when not using an attenuator.
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the display
blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings are saved, they will
be lost.
The attenuation factors of optics can be entered into the H410 so the displayed value will automatically
compensate for the amount of attenuation. For example, assume a beam splitter is being used that
transmits 75% and reflects 25% of the beam. If the H410 is set up to measure the reflected beam the
attenuation could be set up as follows:
•An attenuation factor of 1 would display the value of the reflected beam.
•An attenuation factor of 3 would display the value of the transmitted beam.
•An attenuation factor of 4 would display the value of the source.
To enter into the attenuation factor mode:
A. Press the MODE button to start a menu cycle of J, AVG J, W, CAL and tO.
B. Press the ON/SELECT button when the CAL annunciator appears. A second menu cycle of CAL
1, CAL 2, Attn and SPd will start.
C. Press the ON/SELECT button when the Attn annunciator appears. The current attenuation factor
will be displayed and SET will flash.
D. Press the RANGE (count up) and MODE (count down) buttons to change the attenuation factor to
the desired value. Values of 0.01 to 99.99 may be selected.
E. Press the ON/SELECT button. The attenuation factor is now active and the power meter will
return to the last operational state.
F. Press and hold the OFF/CANCEL until the display blanks to save the setting.
G. Press the ON/SELECT button to turn the H410 back on.

PN 10795T 18
14. Time Out
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the display
blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings are saved they will
be lost.
Note: The time out default setting is 10 minutes.
The time out feature conserves battery power by putting the H410 to sleep if there is no input from a
detector after a selected period of time. To awaken the H410 once it is in the sleep mode press the
ON/SELECT button.
To enter into the time out mode:
A. Press the MODE button to start a menu cycle of J, AVG J, W, CAL and tO.
B. Press the ON/SELECT button when the tO annunciator appears. The current time out setting will
be displayed and SET will flash.
E. Press the RANGE (count up) and MODE (count down) buttons to change the desired number of
minutes, from 1 to 9999.
D. Press the ON/SELECT button. The time out setting is now active and the power meter will return
to the last operational state.
E. Press and hold the OFF/CANCEL until the display blanks to save the setting.
E. Press the ON/SELECT button to turn the H410 back on.
Correcting Pyroelectric Detector Operating Parameters for Use at Different
Wavelengths
Note: Due to variability in the manufacturing process the absorption characteristics of the HD and P
model detectors can vary in the UV region (190 to 400nm). Scientech recommends optical calibration at
266nm if the detector is to be used in the UV region instead of relying on an absorption rate in the chart
at the end of this manual.
All pyroelectric detectors are calibrated at a specific wavelength and the detector’s output sensitivity is
derived for that wavelength. The output sensitivity and calibration wavelength is recorded in the

PN 10795T 19
Operating Parameters section at the front of the manual and on the detector’s serial tag. When a
pyroelectric detector is used at a wavelength other than the calibration wavelength, its output sensitivity
can be adjusted to compensate for the absorption rate at the new wavelength. The new output sensitivity
is calculated as follows:
1. Find the absorption rate from the chart at the end of this manual for the calibration wavelength of
your pyroelectric detector.
2. Find the absorption rate for the wavelength where you will be working.
3. Determine the new output sensitivity using the following formula:
absorption rate of new wavelength x output sensitivity (V/J) = output sensitivity for new
absorption rate of calibration wavelength wavelength from serial tag
This new output sensitivity can be entered into the H410 as described in Group Settings or when using the
pyroelectric detector without a H410 power meter as discussed later in this manual.
Using the H410 with VectorSeries Calorimeter
The calorimeter selected needs to be the appropriate model for the planned laser measurements. Please
familiarize yourself with the operating specifications which are provided in the Vector™ Calorimeter
Operating Manual.
Note: Vector™ calorimeters are sensitive to all types of thermal input. Due to the handling of the
calorimeter during setup and possible environmental temperature differences, thermal gradients may exist
in the calorimeter. Allow the calorimeter to sit undisturbed for several minutes to, reach thermal
equilibrium, before using.
Note: When using a 25mm Vector™ calorimeter for measuring average power levels below 30mW and
single pulse energy levels below 30mJ, a Scientech Model 360203A, Isoperibol Enclosure, is highly
recommended. The isoperibol enclosure should not be used at average power levels above 30mW, and
single pulse energy levels above 100mJ because heat build-up will occur.
Note: Large Aperture calorimeters and the Interface Modules that they are calibrated with are matched
sets and must be used together.