Lasermet ADM-1000 User manual

Advanced Digital Meter ADM-1000
Operating Instructions
Including
PC Interface Software for the
Remote Operation of Meter (Part 2 of manual)
June 2012

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Issue Notes
Issue 1.5 18/06/2012
Lasermet reserves the right to change the design, modify the operation of functions,
add new features, or make any other changes at any time without prior notice.
This document is copyright. All rights reserved.
PC Interface. This feature is documented in Part 2 of this manual
The PC Interface Program extends the user interface of the meter:
The meter can be operated remotely
Waveforms can be observed in more detail and saved as images or data
Logging can be used to observe laser performance over long periods
Log files can be saved in Excel-compatible format and recalled for display
The program requires a PC running Windows XP or Windows 7, with at least 25MB
of hard disk space available. A USB port should be available. The program requires
an ADM-1000 loaded with firmware version 0.0.0.59 or later.

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Contents
Issue Notes.................................................................................................................2
Contents.....................................................................................................................3
Introduction.................................................................................................................5
Safety .........................................................................................................................5
ADM1000 equipment..................................................................................................6
Detector Heads...........................................................................................................7
Specifications for Detector Heads .......................................................................8
Power Sources...........................................................................................................9
DC Power Supply................................................................................................9
Battery Pack......................................................................................................10
USB...................................................................................................................10
Switching On ............................................................................................................11
Display Mode Summary ...........................................................................................13
Digital Display Features........................................................................................13
Graphical Display Features...................................................................................13
Operation..................................................................................................................14
Display Mode........................................................................................................14
Range ...................................................................................................................14
Manual Range Setting ..........................................................................................14
Auto-Range...........................................................................................................15
Wavelength...........................................................................................................15
Peak/Average Measurement.................................................................................16
Setting Average and Peak Hold Periods ...........................................................16
Trend Bargraph.................................................................................................16
Zero Offset............................................................................................................17
Backlight ...............................................................................................................17
Display Contrast....................................................................................................18
Graphical Mode Functions........................................................................................19
Setting X and Y scales..........................................................................................19
Timebase (Horizontal Scale) setting .....................................................................20
Start Acquisition ................................................................................................20
Rolling Display...................................................................................................20
Y-scale (Range) setting.........................................................................................20
Bandwidth Limit.................................................................................................21
Trigger setting.......................................................................................................21
Auto Mode.........................................................................................................23
Normal Mode.....................................................................................................24
Manual Mode.....................................................................................................24
Cursor Function ....................................................................................................25
Setting the Cursors............................................................................................25
Other Functions........................................................................................................28
Detector Temperature .......................................................................................28
Head Information...............................................................................................28
Instrument Information.......................................................................................28
Specifications ...........................................................................................................29
Connecting the ADM-1000 to a P.C. ........................................................................30
Data output ...........................................................................................................32
ADM-1000 Firmware Update ................................................................................33

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PC Interface Program User Manual (Part 2).............................................................35
Introduction...............................................................................................................36
Installation ................................................................................................................36
Removing the program..........................................................................................37
Running the program................................................................................................37
Basic controls........................................................................................................39
Power range......................................................................................................39
Meter mode.......................................................................................................39
Zeroing the meter..................................................................................................39
Wavelength display...............................................................................................39
Capturing a log file....................................................................................................40
Viewing a log file.......................................................................................................41
Using Excel...........................................................................................................41
Using the internal viewer.......................................................................................42
Graphical (waveform) display...................................................................................43
Cursor measurements...........................................................................................44
Screen appearance...............................................................................................45
Saving a waveform...................................................................................................45
Saving a waveform as an image...........................................................................45
Saving a waveform as data...................................................................................47
Reading the ADM-1000 firmware version.................................................................48
Note on USB time-outs.............................................................................................48
Trademarks ..............................................................................................................48

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Introduction
The ADM-1000 is an advanced hand-held or bench Digital Meter. It is used in
conjunction with one of a range of detector heads for measuring and displaying
optical power and waveforms.
The ADM-1000 may only be used with compatible Lasermet detector heads. The
range of heads available includes photodiode and thermal types covering a range of
sensitivities and wavelengths.
The input power ranges are from 1nW to 20W and the wavelength ranges are from
180 –20,000nm.
Safety
The ADM-1000, its battery pack, and mains power adaptor are intended for indoor or
occasional dry outdoor use. Do not expose this apparatus to rain, moisture or
extremes of temperature or humidity.
Do not attempt to dismantle the meter, power supply or battery pack –no user-
serviceable parts inside. Hazardous voltages are present inside the mains power
adaptor.
Use of this equipment outside its intended purpose may invalidate warranty.
Please refer to the Detector Head specification to determine which head to use.
No liability is accepted by Lasermet or its agents for any injury or damage howsoever
caused by the use or misuse of this equipment.

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ADM1000 equipment
The ADM1000 system comprises of the following items included with the meter
Description Part number/Order Code
ADM1000 hand held meter ADM-1000
Integral battery pack
ADM Cable Meter-Head Interface ADM-C-1.2
Mains power lead
The following optional items are selected by the user
Standard ABS carry case ADM-CA-S
(Designed for ADM1000, 2 Heads, Power Supply, Cables)
Standard Photodiode Head IPDH-10S
Compact Photodiode Head IPDH 10C
Thermal Head ITDH-100P
All of the heads have standard threads so that optical table posts can be used.
The above photo shows the ADM1000 Laser Power Meter in its carry case with two
detector heads, detector connection cable and mains power supply.

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Detector Heads
Standard Photodiode Head IPDH-10S (Integrating Photo Diode Head)
This is supplied complete with an integrating sphere for maximum reduction of
reflections, easy alignment and high accuracy.
Compact Photodiode Head IPDH-10C
Designed for limited spaces with no integrating sphere,
this head has a depth of only 17mm.
Thermal Head ITDH-100P
This is designed with performance and
ease of use in mind and includes:
• patented advanced speed-up circuitry
giving a response time of 20 ms
• patented advanced integrated
temperature stabilisation circuitry to
reduce drift & thermal interference
Patent numbers
(Peltier Temperature Compensation UK Patent number 2447294, European Patent
Number 08250712.0 and ADI Head Interface Patent Number 09250671.6).
Integrating
sphere within
unit
Laser light
aperture.
Analogue output socket to
connect to oscilloscope etc.
An adapter cable is available
to connect using a BNC
Connector
Connector
to meter
Laser light
aperture.
M6 Screw
thread for
stand
Head mounted
on typical post
ITDH on
typical
mounting
stand
Serial No.
Connector
to meter
Analogue output coax socket
to connect to oscilloscope,
datalogger etc

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Specifications for Detector Heads
Integrating Sphere Thermal Head Compact Photodiode
Photodiode Head Head
Part No. IPDH-10S ITDH-100P IPDH-10C
Wavelength Range (nm) 400 –1100 180 –20,000 400 - 1100
Detector Type Si Peltier Si
Response Time
(E-folding) 700 ns 20 ms 700 ns
Max Input Power 1 W 20 W 10 mW
Min Input Power 0.1 μW 1 mW 1 nW
for Useable Reading
Dimensions (mm) 76 ∅x 86.5 (d) 76 ∅x 86.5 (d) 64 x 41 x 17
Aperture Diameter (mm) 11 20 10
All Lasermet detector heads have an M6 thread in order mount them on standard
posts on an optical table. For posts using ¼” UNC thread an optional adaptor can be
ordered.
Warning
You must select the appropriate head for the laser you are measuring. The
specification of the laser or markings on the laser machine should indicate the laser
power.
If the heads are subjected to laser power exceeding the above figures, the meter will
show “Over Range” on the display and heads may become damaged or go out of
calibration depending on the amount of excess power they are subjected to.
Potential damage is also dependent on power density.
IPDH-10S
For the Integrating Sphere Photo Diode head a maximum input power density of 1W
per mm beam diameter is the limit. This head is very robust.
ITDH-100P
For the Thermal head a maximum input power density of 4W per mm beam diameter
is the limit.
IPDH-10C
For the Compact Photodiode head a maximum input power density of 1mW per mm
beam diameter is the limit.
See also the Detector Temperature section of this manual

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Power Sources
The ADM-1000 may be powered from
either a detachable rechargeable
battery pack, a Mains-DC power
supply or from a P.C. through a USB
connection.
The options are shown in the diagram
opposite and described below.
DC Power Supply
A DC power supply is included with the ADM-1000. The lead is connected to the
6VDC IN socket on the end of the ADM-1000, the power supply is then plugged into
the mains. The ADM-1000 will operate from the power supply regardless of whether
the battery pack is fitted or not.
The use of unapproved power sources should be avoided to prevent damage to the
unit.
If the battery pack is fitted to the ADM-1000, the power supply will charge the battery
as well as operate the ADM-1000.

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Battery Pack
The supplied NiMH battery pack fits to the rear of the unit. It is released by pressing
the tab at the back, and slid off.
The battery pack may be charged when it is attached to the ADM-1000 by plugging
in the DC power supply into the 6VDC IN socket on the ADM-1000. So long as the
power supply is connected and operating, the battery is charged even if the ADM-
1000 is switched off via its keypad.
It typically takes 12 hours to fully charge the battery. To maximise the life of the
battery pack, avoid charging it for more than 24 hours.
New battery packs may only have a small amount of charge in them and will require
charging before use. Note that new battery packs or packs which haven’t been used
for a long time will require several charge/discharge cycles before they reach full
capacity.
The ADM-1000 will typically run for 5 hours or more on a good, fully charged battery
pack. A longer operating time will be achieved if the backlight is used less. When the
battery is low, a flashing ‘Low Battery’ symbol appears in the top right corner of the
display, see Diagram 2.
Additional battery packs are available from Lasermet.
USB
The ADM-1000 will operate from the power available from a USB port. Refer to the
section ‘PC Installation’. Note that in this mode the battery is not charged.