Spectral Evolution PSR-1100 Operator's Manual - User Manual

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PSR-1100

Portable Spectroradiometer

Operator’s Manual

PSR-1100 Manual

Revision: 1.00

4/5/2012

Table of Contents

Introduction............................................................................................................. 3

Hardware and Interface Description........................................................................ 4

2.1

Part Identification ............................................................................................ 4

2.1.1

Spectrometer........................................................................................... 4

2.1.2

Battery Pack ............................................................................................ 4

2.1.3

Optical Input ............................................................................................ 4

2.1.4

Serial Communications............................................................................ 4

2.1.5

Front Panel.............................................................................................. 5

2.1.6

Back Panel .............................................................................................. 5

2.1.7

Laser Scan Switch................................................................................... 5

2.2

Interface Specification ..................................................................................... 6

2.2.1

Battery Pack ............................................................................................ 6

2.2.2

USB Serial Connector ............................................................................. 6

2.2.3

Serial Communications via USB or Bluetooth Virtual COM Port .............. 6

2.2.4

ESD protection: ....................................................................................... 7

Control Panel .......................................................................................................... 8

3.1

Indicators ........................................................................................................ 8

3.2

Switches ......................................................................................................... 8

3.2.1

Power Switch........................................................................................... 8

3.2.2

Membrane Switches ................................................................................ 8

3.2.3

Switch Function ....................................................................................... 8

3.3

LCD Display .................................................................................................... 8

3.3.1

Scan Types ............................................................................................. 8

3.3.2

Status Messages..................................................................................... 9

3.3.3

Parameter Menu...................................................................................... 9

3.3.4

Modifying a Parameter .......................................................................... 10

Operational/Functional Description ....................................................................... 11

4.1

Setup ............................................................................................................ 11

4.2

Standalone Operation ................................................................................... 11

4.3

Operation with a host PC .............................................................................. 13

Battery Charger .................................................................................................... 14

5.1

Introduction ................................................................................................... 14

5.2

Operation ...................................................................................................... 14

5.3

Information and Warnings ............................................................................. 14

Appendix A: Laser Safety ............................................................................................. 15

Appendix B: PSR-1100 Specifications ......................................................................... 17

Appendix C: Bluetooth Information ............................................................................... 18

PSR-1100 Manual

Revision: 1.00

4/5/2012

1 Introduction

This manual contains data concerning the PSR-1100 field-portable

spectroradiometer system. The system consists of a UV-visible-NIR range spectrometer
with integrated lens (or optional fiber optic input) that produces output calibrated to units
of spectral radiance (W/m

/nm/sr). Energy enters the spectrometer from an external

illumination source by way of the lens. The spectrometer is a dispersive PDA system
operating in the range of 320–1100 nm with a 512-element array detector.

All electronics for controlling the PSR-1100 system operation are built into the

instrument. The instrument incorporates manual controls and on-board storage for self-
contained field operation, as well as the capability to connect to a host computer system
using the provided application software via USB or Bluetooth communications interface.
The instrument is powered by a Li-Ion battery pack (provided with each system).

The PSR-1100 contains an internal microprocessor that controls the data

acquisition of the detector array, the communication interface to the host PC, and
provides data storage. Calibration data and spectral data (collected in standalone mode,
described below) are stored in flash memory. The PSR-1100 has a built-in shutter for
automatic dark measurements. The dark current data are retained in RAM and the
microprocessor automatically performs mathematical functions on collected spectral
scan data, including dark subtraction and automatic integration adjustment.

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2 Hardware and Interface Description

2.1 Part Identification

2.1.1 Spectrometer

The spectrometer component of the SR-1100 is a crossed Czerny-Turner

configuration using a ruled grating as the dispersive element.  Energy enters the
spectrometer and is collimated before being reflected off the grating and refocused onto
the PDA detector.  The detector is a 512-element array, covering the spectral range
320–1100 nm.  The spectrometer and controlling electronics are contained in the
housing.

2.1.2 Battery Pack

The PSR-1100 uses a Li-Ion battery pack as a power source, supplied with the

system. The Li-Ion battery runs at a nominal 7.4V and is designed to provide more than
3 hours operation following a full charge. When the battery voltage falls too low to power
the instrument, it will turn off and go to 0 volts. Remove the battery from the instrument
for recharging with the supplied charger. Refer to

Section

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Battery

Charger for charging details.

2.1.3 Optical Input

The PSR-1100 comes with a standard fixed 4° field-of-view lens foreoptic

installed. Custom configurations may replace the lens with alternate foreoptics such as a
25° FOV fiber optic input.

The entire spectrometer/foreoptic system is factory-calibrated for radiance using

a NIST-traceable source. The calibration coefficients are stored in flash memory by the
internal microprocessor. The application software retrieves these coefficients and
applies them to acquired scan sample data to convert to radiometric units.

2.1.4 Serial Communications

Communications with the PSR-1100 are conducted using USB or Bluetooth.

USB communications require a standard cable with USB-B connector to fit the

receptacle on the control panel. The first time the host PC is connected to the instrument,
Windows® will need to install drivers for the virtual COM port functionality. These drivers
are included on the CD-ROM that was provided with your unit. Once the drivers are
loaded, the provided Windows® application software interacts with the
spectroradiometer using a virtual COM port in the same fashion as a standard RS-232
serial port (115200 baud, 8 data bits, 1 stop bit, no parity).

The PSR-1100 is also enabled for wireless communications with the application

software provided the user has installed a Bluetooth serial port on the host PC.
Depending on your Bluetooth adapter’s configuration utility, you will need to enter an
identifier for your instrument type (typically called its PIN key or pairing code) the first
time you use your PSR-1100. This code is “psr1100”. Your Bluetooth utility will recognize
the instrument by a unique name with the syntax “PSR-1100 ####”, where #### is
replaced by the serial number of the unit.

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Figure 1: Front Panel view of the PSR-1100

2.1.5 Front Panel

The front panel of the PSR-1100 contains the on/off switch, USB connector,

battery receptacle and a control panel with membrane switches and LCD display. A
handstrap is permanently attached and near the front panel are two mounting brackets
for attaching a shoulder strap. See

Section 3: Control Panel

for more information.

2.1.6 Back Panel

The opposite end of the PSR-1100 contains the optical input (lens or SMA fiber

optic input), Bluetooth antenna and optional tripod mount.

2.1.7 Laser Scan Switch

The Laser Scan switch is located on the top cover of the spectroradiometer.

Depressing the switch actuates the sighting laser and can be optionally configured to
initiate the start of a standalone spectral scan.

DANGER: DO NOT LOOK INTO THE LASER BEAM AT ANY TIME, INCLUDING
INSTRUMENT SETUP OR OPERATION.

For more information see

Appendix A: Laser Safety

Li-Ion
Battery

USB
Connector

On/Off Switch

Control Panel

Laser Scan Switch

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Figure 2: View of PSR-1100 optical components

2.2 Interface Specification

2.2.1 Battery Pack

Your PSR-1100 is supplied with one or more Li-Ion battery packs that fit into the

recess on the front panel. Slide the spring-loaded catch to the side (away from the
recess) with a finger to insert or remove the battery.

Important

: See

Section 0:

Laser

Lens

Bluetooth
Antenna

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Battery

Charger

for details on charging the external battery and safe operation.

2.2.2 USB Serial Connector

For communications via USB, the front panel is equipped with a USB Type-B

receptacle connector, compatible with all standard USB cables with Type-B plug.

Pin 1: +5V

Pin 2: D-

Pin 3: D+

Pin 4: GND

2.2.3 Serial Communications via USB or Bluetooth Virtual COM Port

Baud Rate: 115200 bps
Parity: none
Data Length: 8
Stop bit: 1
Flow Control: none

2.2.4 ESD protection:

+/- 15 KEV human body model,

+/- 8KEV contact discharge

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3 Control Panel

The control panel of each PSR-series spectroradiometer contains the controls

and displays that are required for the stand-alone operation of the instrument.

3.1 Indicators

The Control Panel has 3 LED status indicators.

Power LED:

The power indicator is illuminated when the power is on.

Laser LED:

The laser indicator is illuminated when the laser is on.

Connect LED:

The connect indicator is illuminated when the instrument is NOT

connected to a computer via Bluetooth communication link.

3.2 Switches

3.2.1 Power Switch

The power switch provides on/off control of the unit.

3.2.2 Membrane Switches

The three (3) membrane push button switches provide control of the unit during
standalone operation and the capability of modifying the unit’s operation. The functions
of the switches are detailed below.

3.2.3 Switch Function

Scan:

Steps through scan options (Reference/Target/Dark Scans)

Menu:

Steps through the menu options (Memory Scan#/Dark Scan Mode/Scan

Timer/Optic/Laser Scanning)

Edit:

Toggles or cycles through parameter lists for each menu option

3.3 LCD Display

The LCD display is an eight (8) character, two (2) row display that shows the selected
scan and status messages.

ROW 1

displays the scan types, status messages, and battery voltage. The SCAN

button allows the user to select the type of scan to perform.

ROW 2

displays the parameter menu. The MENU button allows the user to scroll

through a set of available parameters, and the EDIT button changes the parameter
settings.

3.3.1 Scan Types

The next type of scan to be collected is displayed in row 1 as follows:

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REF x.xx -

Indicates that a spectral measurement will be stored as a Reference Scan;

current battery voltage is x.xx volts, or “LBAT” (Low BATtery) when indicated.

TAR x.xx -

Indicates that a spectral measurement will be stored as a Target Scan;

current battery voltage is x.xx volts, or “LBAT” (Low BATtery) when indicated.

DRK x.xx -

Indicates that a dark measurement will be acquired. The dark measurement

will be stored in volatile memory (not flash) and used for subsequent scaled dark
measurements. The current battery voltage is x.xx volts, or “LBAT” (Low BATtery) when
indicated.

Pressing the SCAN button cycles through these options. Note that after a REF scan is
taken, the instrument automatically switches to collecting TAR scans.

3.3.2 Status Messages

These messages are also displayed on row 1:

SCANNING -

Indicates that a spectral data acquisition is being performed.

BUSY

- Indicates that the instrument is performing a lengthy internal operation.

3.3.3 Parameter Menu

The parameter menu is displayed on row 2. The MENU button allows the user to cycle
through the following parameters. The EDIT button changes the parameter values.

MEM# xxx

- Displays the memory slot that will hold the next acquired scan. The

allowable values are from 1 to 500. The memory slot cannot be adjusted by the keypad,
with the exception of completely erasing all memory.
To erase all memory and set MEM# to one (1), the <MENU> and <EDIT> keys must be
pressed simultaneously.

IMPORTANT!

This operation permanently erases all internally

stored scans taken in standalone operation mode.

DRK xxxx

- Selects the dark subtraction mode:

AUTO

- Automatic Dark mode is selected. Dark current measurement will be acquired

automatically prior to each scan. The dark currents will be acquired at the same settings
as the target scan.

SCLD

- Scaled Dark mode is selected. Dark Current for each scan will be scaled, based

on the integration time and the Dark Scan that was acquired manually using the Dark
scan.

STIM xxx -

STIM xxx is the scan averaging time. The allowable values are from 1 to 30.

The length of time for a scan is xxx seconds, for each light and dark scan.

O:xxxxxx -

Entrance optic option.

This must be set to the entrance optic in use for

correct calibration factors to be applied

. There can be up to eight (8) optic calibration

options stored in a single instrument. Some possibilities are listed below:

(1)

LENS 4 – 4 degree FOV lens

(2)

FIBER1 – standard 25 degree FOV fiber optic

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(3)

LENS14 – 14 degree FOV lens

(4)

RAW DN – no calibration applied

LSCN xxx -

Laser Scan Switch function. This can be set to ON or OFF. When the Laser

Switch is depressed, the sighting laser is (always) turned on. When LSCN is set to ON, a
stand alone scan will be acquired when the switch is released. When LSCN is set to
OFF, no scan will be acquired.

3.3.4 Modifying a Parameter

(1)

Depress the MENU button to locate the parameter you wish to edit.

(2)

Modify the parameter by depressing the EDIT button. The push button switches are

programmed to scroll the menu of available options.

(3)

Depress the MENU button again to save the selected parameter setting.

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4 Operational/Functional Description

All Spectral Evolution PSR series spectroradiometers operate as portable field

instruments with onboard data storage and an easy-to-use manual control panel for
standalone operation. Combined with a host PC, the PSR can also be controlled for
acquisition in real time and for retrieval and display of the stored scan data.

4.1 Setup

To use the PSR-1100, install a fully charged battery pack by inserting it into the battery
slot located on the instrument’s front panel. Switch the power switch to the ON position.
After a brief initial power-on period, the LCD indicator will display the message “REF”
followed by a battery voltage reading and “O: LENS4”.

4.2 Standalone Operation

Dark Measurement Overview

A dark measurement must be taken prior to taking reference or target

measurements. Dark measurements are taken automatically by the instrument in
AutoDark Mode, or are taken manually by the operator when in Scaled Dark Modes.

In AutoDark Mode, the internal shutter automatically closes and dark

measurement taken immediately prior to the reference or target scan; there is no need to
ever take a dark measurement manually.

If Scaled Dark Mode is used, however, a dark measurement must be taken

manually. A new dark measurement should taken periodically, more often under
changing environmental conditions.

Using AutoDark Mode ensures that the latest dark values are subtracted on

every scan; however, enabling AutoDark doubles the amount of time the scan requires
to complete. The dark measurement is subtracted from the Reference and Target
measurements. Dark measurements are stored in the PSR’s RAM and are not saved
when the power is cycled.

Reflectance Measurement Overview

A reflectance measurement takes the scan of a reference (white plate) and

calculates the ratio of the target scan to that reference. Unless the instrument is set to
AutoDark Mode (where it takes a new dark reading with every scan) - if any of the below
conditions exist, a new dark measurement should be taken:

•

After instrument power-up and warm-up, but before acquiring any reference/target

scans.

•

Every 3-5 minutes thereafter; more often if time and conditions allow, or if lighting

or environmental conditions are changing.

If any of the below conditions exist, a new reference measurement should be

taken before a series of target measurements:

•

Beginning of a new set of scans.

•

Any change in the collection optics.

•

The instrument has been idle for an extended period, or has been turned off.

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•

Lighting conditions have changed or are variable.

When in doubt, take a reference measurement!

Taking a DARK Measurement (Skip these steps in AutoDark Mode)

1. Check that the LED Power Indicator is illuminated, indicating that the power is
enabled.
2. Press the Menu membrane switch unit the LSCN menu item appears; press the Edit
membrane switch so that ON appears.
3. Press the Menu membrane switch until the DRK menu item appears; press the Edit
membrane switch so that SCLD appears. This enables the Scaled Dark Mode for
standalone operation.
4. Press the Scan membrane switch until the DRK x.xx scan message appears on the
LCD. (x.xx indicates battery voltage) Check to see if battery is adequately charged.
5. Press and release the Laser Scan button on the side of the unit. The instrument will
close the shutter and take dark data for approximately 15 seconds. Since the shutter
closes in order to take the dark measurement, no particular target needs to be sighted
by the instrument optics during a dark measurement. Dark measurements do not take up
a memory location within the instrument’s stand-alone scan memory.
6. The dark measurement just taken is associated with all succeeding measurements
until a new Dark measurement is established. Dark measurements are stored in volatile
memory (not flash) and must be retaken whenever the instrument power is cycled.

Taking a REFERENCE Measurement

1. Check that the LED Power Indicator is illuminated, indicating that the power is
enabled.
2. Press the Menu membrane switch unit the LSCN menu item appears; press the Edit
membrane switch so that ON appears.
3. Press the Scan membrane switch until the REF x.xx scan message on the LCD. (x.xx
indicates battery voltage) Check to see if battery is adequately charged.
4. Place a reference at the point of measurement making sure to completely fill the field
of view of the instrument. This reference measurement is associated with all succeeding
measurements until a new reference measurement is established.
5. Press and hold the Laser Scan button to activate the sighting laser and verify the
placement of the reference plate relative to the laser spot as required to fill the field of
view.
6. Release the Laser Scan button to record the measurement. The LCD counter
increments to display the next available memory location.

Taking a TARGET Measurement

1. Check that the LED Power Indicator is illuminated indicating that the power is enabled.
2. Press the Menu membrane switch until the LSCN menu item appears; press the Edit
membrane switch so that ON appears.
3. Press the Scan membrane switch until the TAR x.xx scan message on the LCD. (x.xx
indicates battery voltage) Check to see if battery is properly charged.
4. Place a reference at the point of measurement making sure to completely fill the field
of view of the instrument. This reference measurement is associated with all succeeding
measurements until a new reference measurement is established.

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5. Press and hold the Laser Scan button to activate the sighting laser and verify the
placement of the target to be measured relative to the laser spot as required to fill the
field of view.
6. Release the Laser Scan button to record the measurement. The LCD counter
increments to display the next available memory location.

Additional target

measurements may be made by pressing and releasing the Laser Scan switch.

4.3 Operation with a host PC

The PSR-1100 interacts with Spectral Evolution’s DARWin SP software

(provided with your instrument) running on the host PC via USB or Bluetooth virtual
COM port connection.

The primary tasks that can be performed by running DARWin SP while

connected to your spectroradiometer are:

1. Controlling the instrument remotely and collecting and displaying scan data in

real time, with expanded control options, and

2. Retrieving and displaying scan data collected and stored during standalone

operation.

Be sure to install the software (and any USB/Bluetooth communications drivers

as needed) prior to the first time you connect to the instrument.

When running DARWin SP make sure your instrument has a charged battery and

that it is powered and that the proper communications interface has been enabled. Once
communications have been established, a brief initialization sequence follows and then
your system is ready for use.

For detailed information on how to use DARWin SP with your PSR Series

spectroradiometer, see the DARWin SP User Manual included with your instrument.

PSR-1100 Manual

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5 Battery Charger

5.1 Introduction

The provided battery charger is used to charge one lithium-ion battery (nominal

7.5VDC, 2800 mA-h). The charger operates from 110/240 volt AC line supply. Follow all
directions for proper, safe operations. Only charge batteries indoors in a cool place.

5.2 Operation

To charge the external battery pack:

1.  Remove the battery pack from the instrument.
2.  Plug the charger’s round male plug into the battery pack’s female jack.
3.  Plug the charger into an AC outlet.

The charger’s

RED

LED will be illuminated during charging; when charging is complete

the charger’s

GREEN

LED will be illuminated.

Charging a battery from empty to full capacity (approximately 8.4VDC) will take
approximately 2-3 hours.

5.3 Information and Warnings

Cells: 18650 Li-ION cells with IC protection are used inside the battery pack

Protection: 4A max polyswitch is installed in the battery pack for double over-discharging
protection.

The battery will be automatically cut off to zero (0) volts when its voltage falls too low for
PSR operation.

WARNINGS:

•

Avoid heavy impact to the battery pack; this may cause the battery pack to

malfunction.

•

Do not expose the battery pack to fire or extreme heat; this may cause the

battery pack to malfunction.

•

Do not use any DC power supply or charger other than the dedicated battery

charger supplied with your instrument; this may cause the battery pack to
malfunction.

Also, always power the PSR Series instrument with its battery only.

NEVER

use the

dedicated battery charger to provide power to the instrument.

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Appendix A: Laser Safety

The PSR Series Spectroradiometers use a Class 3R laser beam that complies with IEC
60825-1, Ed. 1.2. The source of laser energy in the PSR is a nominal 3 mw, continuous,
635 nm diode laser. No maintenance or adjustments are required in order to keep this
product in compliance with the above specifications.

DANGER:

Do not look into the laser beam at any time including instrument setup or
operation.

The laser is operated by pressing the Laser Scan Switch located on the top surface of
the instrument. See

Section 2: Hardware and Interface Description

for the location of

this control.

CAUTION - Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation exposure.

There are no user serviceable components within this device. The unit should be
returned to the manufacturer in case of malfunction.

LABELING:

The following labels are required for the PSR Series instrument. Each label is described
below. If the instrument does not have the appropriate labels, contact the manufacturer
to ensure that your unit is in compliance.

(1) Explanatory Label

Location – Bottom of instrument, on the product information label.

(2) Supplementary Explanatory Label

Laser Power: 3 mW, Laser Wavelength 635 nm.

Laser conforms to IEC 60825-1, Ed 1.2.

Location – Bottom of instrument, on the product information label.

(3) Warning Label

Location – Bottom of instrument, on the product information label

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(4) Aperture Label

Location - Next to the laser aperture.

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Appendix B: PSR-1100 Specifications

Performance Specifications

Spectral Range

320–1100 nm

Spectral Resolution
nominal

<= 3.2 nm

Spectral Sampling Bandwidth
nominal

1.5 nm

Detector

512 element Si PDA

A/D Converter

16 bit

Wavelength Accuracy

.5 nm

Wavelength Reproducibility

.1 nm

Integration Time

8-2000 ms

Physical Specifications

Power

Supplied 2800 mA-h Li-Ion battery pack with

charger, 7.5V nominal

Size

7” x 3.25” x 5.75”

Weight

< 4 lbs

Communications Interface

USB and Bluetooth virtual COM ports

Foreoptics

4° lens provided (other options available)

Onboard Storage

> 500 scans in stand-alone mode

Targeting

Internal red laser

Environmental Specifications

Operation

Temperature

15 - 35° C (note: wvl drift 18 - 27° C)

Humidity

15 – 90 % non - condensing

Storage

Temperature

0 - 70° C

Humidity

15 – 90 % non - condensing

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Appendix C: Bluetooth Information

Bluetooth Versions Supported: V1.1
Bluetooth Class: Class I
Bluetooth Connection Type: Virtual COM Port
Bluetooth Connection Pin Key/Pairing Code: psr1100

Revision
Tracking

Changes

Date

1.0

Original Draft

4/5/11

Windows

is a registered trademark of Microsoft Corporation.