Leister axetris LGD Compact Series User manual

Operating & Integration Instructions
Laser Gas Detection
OEM Module
LGD Compact

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 2/46
Foreword
Dear customer, we thank you for acquiring an Axetris LGD Compact laser gas detection module. Please read
this document carefully and entirely, to properly install and operate your device.
Axetris laser gas detection modules are manufactured with extreme attention and the highest quality standards
to offer you the best performance for full benefit in your application. Should you require any additional
information or require troubleshooting, please contact us for support.
For questions, service and maintenance information please contact:
Europe and Asia
Headquarters
Axetris AG
Company of the Leister Group
Schwarzenbergstrasse 10
6056 Kaegiswil
Switzerland
Phone: [phone]
Fax: [phone]
[email protected]
www.axetris.com
Americas
Exclusive Distributor
Leister Technologies LLC
1275 Hamilton Parkway
Itasca IL 60143
USA
Toll-Free: +1 844 AXETRIS (844 293 8747)
Fax: [phone]
[e-mail]
www.axetris.com
Japan
Leister Technologies KK
Shinyokohama Bousei Bldg 1F
3-12-20, Shinyokohama, Kohoku-ku
Yokohama 222-0033
Japan
Phone: [phone]
Fax: [phone]
[email protected]
https://www.axetris.com
China
Leister Technologies Ltd.
Building 11, 155 Yuanke Road
Xinzhuang Industry Park
Shanghai 201109
PR China
Phone: [phone]
fax: [phone]
[email protected]
https://www.axetris.com
To find your local representative, please visit https://www.axetris.com/en/sales-network
Transmission and/or reproduction of this document is not allowed without the written permission from Axetris
AG. The data and information provided in this document is accurate to the best of our knowledge. This content
is subject to change without prior notice.
© Axetris AG

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 3/46
Important safety instructions
Warnung Vorsicht
Gefahr! Das Gerät nicht öffnen. Laser Klasse 1.
Das Gerät ist nur mit einem Druck von 800 – 1100
mbar zu betreiben.
Das System darf nicht in einer explosiven Umgebung
benutzt werden. Keine ATEX Zertifizierung.
Hinweis
Verbrennungsgefahr! Gasanschlüsse und Gehäuse nicht
in heissem Zustand berühren. Gerät abkühlen lassen.
Reparaturen sind ausschliesslich durch eine
autorisierte Axetris-Service-Stelle ausführen zu lassen.
Beim Messen von potenzial gefährlichen Konzentrationen
von giftigen Gasen muss der Auslass des Sensors in
einen sicheren Bereich geführt werden.
Sämtliche in der Bedienungsanleitung gegebenen
Informationen und enthaltenen Warnungen sind
einzuhalten.
Warning Caution
Danger! Do not open the device. Class 1 laser.
The device may be used within a pressure range from
800 to 1100 mbar only.
The system may not be used in a potentially explosive
environment. No ATEX certification.
Note
Risk of burning! Do not touch gas connections or
housing when they are hot. Allow the device to cool
down.
Repairs shall be assigned exclusively to an authorized
Axetris service point.
When potentially hazardous concentrations of toxic gases
are measured, the sensor outlet must be transferred to a
safe area.
All information and warnings set out in the Operating
Manual must be observed.
Avertissement Prudence
Danger ! Ne pas ouvrir l’appareil. Laser classe 1.
L’appareil doit uniquement être utilisé à une pression
comprise entre 800 et 1 100 mbar.
Le système ne doit pas être utilisé dans une atmosphère
explosive. Pas de certification ATEX.
Remarque
Risque de brûlure ! Ne pas toucher les raccords de gaz
ni le boîtier lorsqu’ils sont chauds. Laisser refroidir
l’appareil.
Les réparations doivent exclusivement être effectuées
par un centre de service Axetris agréé.
Lors de la mesure de concentrations potentiellement
dangereuses de gaz toxiques, la sortie du capteur doit
être guidée vers une zone sûre.
L’ensemble des informations et avertissements fournis
dans la notice d’utilisation doivent être pris en compte.

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 4/46
Advertencia Precaución
Peligro No abrir el equipo. Láser clase 1.
El equipo solo debe operarse con una presión de 800
– 1100 mbar.
No se debe utilizar el sistema en un ambiente
potencialmente explosivo. Sin certificación ATEX.
Indicación
Peligro de quemaduras. No toque las conexiones de gas
ni la carcasa si están calientes. Dejar que el equipo se
enfríe.
Solo los puntos de servicio técnico Axetris están
autorizados a realizar reparaciones en el dispositivo.
Durante la medición de concentraciones potencialmente
peligrosas de gases tóxicos debe colocarse la salida del
sensor en una zona segura.
Deben respetarse todas las advertencias y la
información incluidas en el manual de instrucciones.
Avvertenza Attenzione
Pericolo! Non aprire l'apparecchio. Laser categoria 1.
Far funzionare l'apparecchio soltanto con una
pressione di 800 – 1100 mbar.
Il sistema non può essere utilizzato in un ambiente
esplosivo. Nessuna certificazione ATEX.
Nota
Pericolo di scottature! Non toccare gli attacchi del gas e
l’alloggiamento quando sono roventi. Fare raffreddare
l’apparecchio.
Le riparazioni devono essere eseguite esclusivamente
da un centro di assistenza autorizzato Axetris.
Nella misurazione delle concentrazioni potenzialmente
pericolose di gas tossici, lo scarico del sensore deve
essere guidato in un ambiente sicuro.
Vanno osservate tutte le informazioni e tutti gli
avvertimenti contenuti nelle istruzioni per l'uso.
警告 小心
危险！不可打开设备。激光级别 1。 只可以 800 – 1100 mbar 的压力来运行传感器。
不允许在可引起爆炸的环境中使用此系统。无 ATEX 认
证。
提示
灼伤危险！不要接触热的气体接口和外壳。冷却设备。 仅可由授权的 Axetris 服务部门进行维修。
在测量有毒气体的潜在危险浓度时，必须将传感器的出
口引至安全的区域。
必须遵守在操作说明书中给出的所有信息和警告。

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 5/46
警告 注意
危険！デバイスを開けないでください。クラス1のレー
ザー。
センサーは800～1100 mbarの圧力でのみ動作しま
す。
システムは、爆発性のある環境で使用することはでき
ません。ATEX認定はありません。
注記
ヤケドの危険があります！高温状態において、ガス接
続部およびハウジングに触れないでください。熱風融
着機をクールダウンさせます。
認定されたAxetrisサービスセンターのみが修理を実
施することができます。
有毒ガスの潜在的に危険な濃度を測定する場合、安全
な場所においてセンサーを差し込む必要があります。
取扱説明書で提供されているすべての情報および警
告情報に従う必要があります。
경고 주의
위험! 장치를 개방하지 마십시오. 1 등급의 레이저.
센서는 반드시 800 – 1100 mbar의 압력으로
가동해야 합니다.
본 시스템은 폭발 환경에서 사용하지 말아야 합니다.
ATEX 인증 안됨.
주의사항
화상위험! 가스 연결부 및 하우징은 가열된 상태에서
접촉하지 마십시오. 이런 경우 장치를 냉각시키십시오.
수리는 반드시 인증된 Axetris 서비스 대리점을 통해
실시해야 합니다.
잠재적 위험이 있는 유독 가스 농도를 측정하는 경우,
센서의 출구가 안전한 영역에 위치해야 합니다.
사용설명서에 명시된 모든 정보 및 여기에 포함된
경고 사항의 내용을 준수해야 합니다.

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 6/46
About this Operating & Integration Instructions
This Operating & Integration Instructions is the original and legally correct version.
The aim of this Operating & Integration Instructions is to provide the user all the necessary information to install,
operate and maintain LGD Compact Series Products.
This Operating & Integration Instructions must be read by all individuals that will be using or servicing this
device. System maintenance and service needs to be performed by qualified and Axetris AG approved
personnel only. The appropriate handling of the product is required for trouble-free operation. This product is
a high-precision measurement device. Careful installation and handling is necessary to achieve and maintain
the specified measurement precision. Correct set-up and operation of the instrument will allow you to use it
safely and to obtain reliable measurement results.
Any warranties regarding this product, and as mentioned in the General Terms and Conditions of Axetris AG,
are void in the event the system is altered or damaged by the user, not installed, used and serviced according
to this document.
Important notes in the text:
Throughout the text, warning and information notes in red, as shown below, inform the user about crucial
points to observe. These warnings and informational notes must be followed scrupulously and Axetris AG takes
no responsibility for any personal injury, death or any damage to equipment or property resulting from not
observing these indications.
The warning sign indicates that severe personal injury/death and/or property damage might result from
not observing safety instructions.
 The information sign points to particularly important information and instructions.

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 7/46
CAUTION
 Product damage
 Read all instructions carefully before using the device.
 The LGD Compact gas sensor modules are not designed to sense liquid flow and damage will result if
liquid is passed through the sensor.
 Gas loaded with particles will eventually contaminate the optics and affect the performance of the
sensor. Please consult our TCS (Technical Customer Support) accordingly.
 The appliance must not be used in damp or moist surroundings.
 Only use accessories indicated in the instructions for use or which are recommended by
the manufacturer.
 Failure to comply with these instructions can result in product damage.
Danger to life
 Unprofessional gas handling can cause injury or death. The use of the gas sensor modules should only
be performed by qualified personnel.
 Do not use this product as a safety or emergency stop device or in any other application where failure
of the product could result in personal injury or death.
 IF THE TEMPERATURE OF THE GAS PROVIDED IS HIGHER THAN THE CELL, A HIGH RISK OF
CONDENSATION AND IRREVERSIBLE DAMAGE OF THE CELL EXISTS.
 DO NOT OPEN THE LGD COMPACT MEASUREMENT HEAD: LASER CLASS 1 INSIDE
(Peak Power 2.5 mW - Wavelength: 1500 - 2000 nm).
DO NOT USE THE SYSTEM IN AN EXPLOSIVE ATMOSPHERE: NOT ATEX CERTIFIED.
DO NOT USE WITH EXPLOSIVE GAS MATRIX: NOT ATEX CERTIFIED.
CLASS 1 LASER PRODUCT
(classified according to SN EN 60825:1:2014-08)

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 8/46
Index
1 GENERAL USER INFORMATION .......................................................................................................... 10
1.1 LGD Compact introduction ........................................................................................................... 10
1.2 General Specifications .................................................................................................................. 10
Environmental conditions ...................................................................................................... 10
Mechanical characteristics .................................................................................................... 11
Electrical characteristics ........................................................................................................ 11
Data interface ....................................................................................................................... 11
1.3 Measurement software / Customer Frontend ................................................................................ 12
2 SYSTEM SET-UP FOR EVALUATION ................................................................................................... 13
2.1 Operation conditions, storage & transport .................................................................................... 13
2.2 System dimensions and mounting ................................................................................................ 13
Sensor module ..................................................................................................................... 14
Electronics ............................................................................................................................ 14
2.3 Electrical Interfaces ....................................................................................................................... 15
D-Sub power supply and communication J1 (15pol, 2 rows) ................................................ 16
Micromatch connector J3 (16pol) ......................................................................................... 17
Micromatch connector J5 (20pol) ......................................................................................... 18
D-Sub sensor module J2 (15pol, 3 rows) .............................................................................. 19
Micromatch connector J6 (10pol) ......................................................................................... 20
Supply voltages and output signals ....................................................................................... 20
2.4 Gas conditioning and filtering information ..................................................................................... 21
2.5 Calibration / calibration verification / offset and span .................................................................... 21
2.6 Zeroing and Purging ..................................................................................................................... 22
2.7 Gas supply ................................................................................................................................... 22
2.8 Adjusting firmware integration time (T90) ...................................................................................... 22
3 INSTRUCTIONS FOR LGD SYSTEM INTEGRATION ............................................................................ 23
3.1 Integration options ........................................................................................................................ 23
With electronics housing ....................................................................................................... 23
Without housing .................................................................................................................... 24
Without housing and without interface board ........................................................................ 24
Instructions for cable packaging ........................................................................................... 25
3.2 Data transmission protocol ........................................................................................................... 26
RS232 Serial settings ............................................................................................................ 26
Overall communication structure ........................................................................................... 26
Timing & RS232-protocol ..................................................................................................... 28
3.3 Measurement data format ............................................................................................................. 29
3.4 Change of user parameters .......................................................................................................... 30
3.5 Commands ................................................................................................................................... 30
Version ................................................................................................................................. 30
Stop measurement (Idle) ....................................................................................................... 31
Ping user data ...................................................................................................................... 31
Configure user data .............................................................................................................. 32
Save to EEPROM ................................................................................................................. 33
3.5.5.1 Changes in Measurement Mode without Save to EEPROM .............................................. 33
Starting measurements ......................................................................................................... 34

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 9/46
3.6 Status, error and failure response ................................................................................................. 34
4 MAINTENANCE AND TROUBLE SHOOTING ....................................................................................... 35
4.1 Maintenance ................................................................................................................................. 35
4.2 Troubleshooting ............................................................................................................................ 36
5 IMPORTANT DISCLAIMER / NOTICE ................................................................................................... 37
6 FCC STATEMENT ................................................................................................................................ 37
ANNEX ......................................................................................................................................................... 38
A. Status, Warning and Error Code Listing for Evaluation .......................................................................... 38
B. Status, Warning and Error Code Listing for Integrators/OEMs .............................................................. 39
C. Examples for Analog Output Adjustments ............................................................................................. 40
D. Product Dimensions ............................................................................................................................. 42

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 10/46
1 GENERAL USER INFORMATION
1.1 LGD Compact introduction
Axetris’ laser gas detector (LGD), “LGD Compact”, is a system for the continuous monitoring of gases such as
CH4, C2H6, C2H2 and CO2. Based on state-of-the-art Tunable Diode Laser Spectrometry (TDLS), the system
has a very high selectivity to the target gas and features an innovative, patented measurement principle without
the need for a physical reference channel. The system is based on a flow-through cell for extractive gas
measurements at ambient temperature.
Typically one system monitors one gas. Concentration
ranges are customer-specific and can cover 0-100
ppm just as well as percentage range, depending on
the gas and measurement conditions.
Calibration is factory set according to customer
application requirements - generally re-calibration is
not necessary except in cases where the customer
application conditions differ significantly from the
feasible factory calibration conditions. Offset and span
adjustments can be performed on a maintenance
basis and might be necessary due to systematic
differences in calibration and gas delivery equipment.
This can be done via the LGD Customer Frontend
available on the Axetris` homepage.
Figure 1 LGD Compact Series
1.2 General Specifications
Environmental conditions
Parameter Unit Value / Range
Usage - Interior use
Operating temperature range °C -10 …+651
Operating humidity % r.H. 0 … 99, non-condensing
Operating pressure mbar 800 … 1100
Storage temperature °C -40 … +80
Storage humidity % r.H. 0 … 99, non-condensing
1 For application specific temperature ranges please see the specifications in the LGD Compact Preliminary Datasheet

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 11/46
Mechanical characteristics
Parameter Unit Value / Range
Measurement cell - Flow-through set-up
Cell volume ml 19
Gas flow (min - max) ml / min 100 - 3’000
Dimensions of sensor module mm 163 (length)
50 (diameter w/o fittings and electrical connector)
Approx. weight sensor module g ≤ 600
Dimensions of electronic unit
with housing mm 257 x 83 x 26 (L x W x H)
Dimensions of electronic unit
without housing (optional) mm 105 x 70 x 10 (L x W x H, main board)
84 x 70 x 10 (L x W x H, interface board)
Electrical characteristics
Parameter Unit Value / Range
Voltage supply with interface
board; min. - max.
VDC 10 - 30 (max. ripple ± 100mV, max. current 1A, inrush
current limitation)
Voltage supply without
interface board; min. - max.
VDC 3.7 – 5 (no inrush current limitation)
Power consumption W ≤ 1 at Tamb 20°C
(Up to 3 W in extreme conditions)
Start-up time s ≤ 30
Data interface
Module powered at 10 - 30 VDC (with interface board)
Parameter Unit Value / Range
RS 232 EIA - RS232 protocol
Analog Current Output
Analog Voltage Output
mA
V
4 - 20, 12-bit resolution
0 - 5, 12-bit resolution
Resistive loads
for voltage output
for current output
kΩ
kΩ
> 2
< 0.47
Capacitive loads
For voltage output
For current output
pF
pF
< 200
< 200
Digital Alarm Outputs (relay) - Relay power supply: 10 V < Vcc Relay < 30 V; max. 0.75
A Various alarm outputs available, for more details refer to
chapter 2.3
Protection ESD protected

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 12/46
Module powered at 3.7 – 5 VDC (without interface board)
Parameter Unit Value / Range
RS 232 TTL - RS232 protocol, TTL signal amplitude 0 - 3.3 VDC
Analog Voltage Output V 0 - 2.5, 12-bit resolution
Resistive loads kΩ > 5
Capacitive loads pF < 100
Digital Alarm Outputs - TTL signal amplitude 0 – 3.3 VDC
Note: contact Axetris if needed
Protection No protection implemented
1.3 Measurement software / Customer Frontend
There is a measurement software / Customer Frontend available for download on the Axetris` homepage:
https://www.axetris.com/en/lgd/downloads-lgd
The LGD Customer Frontend is a .NET application providing a user interface to LGD modules using the LGD
communication driver.
Users have access to normal LGD functions including reading measurements and diagnostic data and setting
a defined subset of parameters. To provide technical support extended functions are granted to Technical
Support Engineers having access to the restricted LGD Customer Frontend Secure Access application.
The application is deployed as a .NET Core self-contained single executable file. No special installation process
is needed. The user only needs to download the file, store it locally and execute it. It is also possible to store
the file on a central file server and execute it from there.
Further information about the Frontend software itself and the handling can be found under "Help" menu in
the LGD Frontend.

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 13/46
2 SYSTEM SET-UP FOR EVALUATION
2.1 Operation conditions, storage & transport
The instrument must be used within the specified ambient conditions and temperature range. Depending on
information provided by the customer, the factory calibration temperature range might cover a narrower range
adapted to the application and reducing the complexity of the calibration. Please find conditions for operation
and storage in chapter 1.2.1.
Dust or condensing water in the measurement cell leads to signal reduction of the device. It is therefore crucial
to ensure that the measurement gas flow is free of dust and that condensation cannot occur.
The systems are not designed for use in an explosive atmosphere.
 Irreversible system damage might occur if the use of adequate and application-specific gas filtration
technology is omitted. This is an optical measurement system. For further information on gas
conditioning and filtering please refer to 2.4.
 Relative humidity in the measurement gas and measurement conditions must be such that no
condensation occurs inside the measurement cell.
 Each sensing module is calibrated to a certain gas temperature and pressure. Deviations in both
parameters can lead to significant degrading of measurement accuracy.
The LGD Compact module continuously measures the gas concentration in the measurement cell. Default
measurement time is roughly 1 s (user changeable to up to 600 s integration time or “averaging”). The LGD
Compact has a start-up time of 30 s to give a correct concentration reading.
For any shipments of the system it is recommended to retain and re-use the original shipment material, which
has been tested and proven to be effective protection. Relevant Operation & Storage conditions as described
above as well as in the Product Datasheet need to be respected for shipment. In case of a return Axetris AG
will not be responsible for shipping damage as a result of improperly packaged systems and recommends
customers to ship systems insured for full value.
2.2 System dimensions and mounting
Do not open the system. Opening might lead to irreversible damage.
Do not remove the fittings of the measurement cell.
Prevent any dust, insulation or other material from entering the measurement cell.
This chapter describes the dimensions of the sensor module, of the electronics housing and also the printed
circuit boards inside the electronics housing. Further described are the mounting holes of the sensor module.

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 14/46
Sensor module
The LGD Compact-A module has two M4 threaded mounting holes located on the side (see Figure 2,
recommended to use two pan head cap screw M4x16 (1.5 Nm) for mounting). For gas supply there are
straight/angled QSML-M5-4 quick connectors for 4 mm diameter tubes.
Figure 2 LGD Compact-A module dimensions and interfaces for fixation and gas supply
Electronics
The electronics is located in a separate housing.
The outer dimensions of the electronic housing are 257 x 83 x 26mm (LxWxH) without connectors and screws.
To avoid damage during operation on the electronics it`s recommended to fix the electronics box with 4 pan
head cap screws M4x10 (1.5 Nm) at the ends.
The electronics housing contains two printed circuit boards (PCBs) as shown in Figure 3.
Figure 3 Electronics housing LGD Compact-A: interface board (left), main board (right)

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 15/46
Figure 4 Dimensions of the main board
Figure 5 Dimensions of the interface board
The electronic main board should be connected to
the sensor module just with the original cable
delivered (recommendations for an own cable design
can be seen in chapter 3.1.4).
The right position for connecting the cable to the
sensor module are marked on the cable connector
as well as on the sensor module. To fix the cable, the
wheel must be screwed counter-clockwise.
Figure 6 Correct connection of cable and sensor
module
2.3 Electrical Interfaces
The standard LGD interface is a RS232 connection. Connection to a USB port is possible via an RS232/USB
adapter supplied with the system. Analog 4-20 mA or 0-5 V interfaces will be factory calibrated upon customer
request. More details can be also found at chapter 1.2.4.
 To connect the system via a USB port please only use our tested RS232/USB adapter that is provided
with the system.
 Please avoid starting-up or restarting a computer when the LGD is connected to the serial interface or
through a USB port.

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 16/46
Position the LGD Compact module at the location where the measurement will be carried out and where
computer, power supplies and gas delivery systems can be installed. For customer support and system service
it is ideal if the computer also can be connected to the internet.
To allow simplified connectivity for evaluation a cable integrating both, system power supply and RS232, are
provided (straight RS232 version, not crossed). The DB15 plug on the right-hand side in Figure 7 connects to
the mainboard of the instrument (mainboard connector in Figure 8), while the DB9 connector on the left-hand
side in connects to the computer.
The electronic housing has two 15pol D-Sub connectors, one with two rows used for power supply and
communication (J1) and the other one (three rows) for connection to the sensor module (J2).
Figure 7 Combined power supply and RS232 cable.
For integration purposes the connectors can be
opened for OEM specific wiring
D-Sub power supply and communication J1 (15pol, 2 rows)
Figure 8 Connector assignment system power
supply and user interface terminal
Figure 9 Connector assignment schematic
Ground Pin 6 & 13 do have the same
potential.
UART Settings (default):
Baudrate: 9`600
Data bits: 8
Parity: no
Stop bit: 1
Flow control: no

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 17/46
Table 1 Connector assignment 15pol D-Sub (2 rows)
Pin Name Description
Power
Supply
1 POWER IN Power supply input 10 …30V
2 GND IN* Power supply ground (has to be used separated from GND
to ensure a proper power supply noise filtering)
3 SHIELD D-Sub 15 Connector – Housing
Digital
Interfaces
6 GND* Ground serial communication
7 RS232 TX UART serial communication
8 RS232 RX UART serial communication
Digital
Alarms
4 ALARM 1 On/Off signal at defined conditions for relay control,
hardware watchdog, etc.
5 ALARM 2 On/Off signal at defined conditions for relay control,
hardware watchdog, etc.
11 ALARM 3 HW watchdog, firmware error and warnings
12 VCC RELAY Relay power supply: 10 V < VCC Relay < 30 V; max. 0.75 A
13 GND* Ground, digital alarms
Analog
Interface
9 ANALOG GND* Analog ground
10 ANALOG OUT Analog output
Factory setting: output current (4-20mA); output voltage (0-
5V) on request only
Not used 14,
15
n/a n/a
Shield Case SHIELD Connected from D-Sub casing to cable shield
* same potential
Micromatch connector J3 (16pol)
Figure 10 Connector assignment Micromatch 20pol
Ordering number receptacle:
 Manufacturer: TE connectivity
 Description: MICRO-MATCH MOW.16P
 Article number: 8-215083-6
The connector assignment of J3 is identical to J1 (see Table 1) except the additional pin 16 which is not used
(see Table 2).
Table 2 Connector assignment 16pol Micromatch additional pin 16
Pin Name Description
Not used 16 n/a n/a

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 18/46
Micromatch connector J5 (20pol)
Figure 11 Connector assignment Micromatch 20pol
Ordering number receptacle:
 Manufacturer: TE connectivity
 Description: MICRO-MATCH MOW.20P
 Article number: 9-215083-0
Be careful in case of connecting J5 directly because there is no protection circuit implemented on
the main board! The protection circuit is placed on the interface board.
Table 3 Connector assignment 20pol Micromatch
Pin Name Description
Power
Supply
1 5V* Power supply input for mainboard
2 5V* Power supply input for mainboard
3 3.7V Power supply output 3.7V from mainboard to drive digital
hardware on interface board; not used in case of removing
the interface board
Digital
Interfaces
4 TXD TTL UART serial communication TTL-Level
5 RXD TTL UART serial communication TTL-Level
Digital
Alarms
13 ALARM 1 Signal for alarm 1 from Microcontroller, contact Axetris if
needed
15 ALARM 2 Signal for alarm 2 from Microcontroller, contact Axetris if
needed
14 ALARM 3 Signal for alarm 3 from Microcontroller, contact Axetris if
needed
20 ALARM 4 Signal for alarm 4 from Microcontroller, contact Axetris if
needed
Analog
Interface
10 DAC ANALOGOUT Analog output signal (0…2.5V) from Microcontroller, contact
Axetris if needed
16 HW INTERFACE PCB Input for identification of interface board, connect to GND in
case of removing the interface board
11 GND** Ground
12 GND** Ground
Not used 6…
9
n/a n/a
17…
19
n/a n/a
* connected on main board
** same potential

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 19/46
D-Sub sensor module J2 (15pol, 3 rows)
The sensor module is connected to the electronic housing via a three row D-sub connector.
Figure 12 shows the pin assignment.
Figure 12 Sensor module connector
assignment
Table 4 Connector assignment 15pol D-Sub (3 rows)
Pin Name Description
Measurement
Signal
11 PD_I Photodiode
12 PD_GND*
Laser control 1 Laser_Drive Laser diode
9 Laser_GND
5 Laser_Supply3V3
8 Laser_Udiff
6 Laser_ID
2 Laser_Thermistor Thermal resistance for laser temperature measurement
3 Laser_GND*
10 Laser_TEC+ Peltier element for laser temperature stabilization
7 Laser_TEC-
4 Laser_PT1K Thermal resistance for optical head temperature
measurement
Temperature
measurement
13 Gascell_PT1K Thermal resistance for gas temperature measurement
14 Gascell_GND*
Not used 15 Reserve n/a
Shield Case SHIELD Connected from D-Sub casing to cable shield
* Same potential

Axetris AG LGD Compact Operating & Integration Instructions; Rev. D 20/46
Micromatch connector J6 (10pol)
Figure 13 Connector assignment Micromatch 10pol
Ordering number receptacle:
 Manufacturer: TE connectivity
 Description: MICRO-MATCH MOW.10P
 Article number: 8-215083-0
Table 5 Connector assignment 10pol Micromatch
Pin Name Description
Measurement
signal
11 PD_I Photodiode
12 PD_GND*
Laser control 1 Laser_Drive Laser diode
9 Laser_GND
5 Laser_Supply3V3
8 Laser_Udiff
6 Laser_ID
2 Laser_Thermistor Thermal resistance for laser temperature measurement
3 Laser_GND*
10 Laser_TEC+ Peltier element for laser temperature stabilization
7 Laser_TEC-
4 Laser_PT1K Thermal resistance for optical head temperature
measurement
Temperature
measurement
13 Gascell_PT1K Thermal resistance for gas temperature measurement
14 Gascell_GND*
Not used 15; 16 Reserve n/a
* same potential
Supply voltages and output signals
Table 6 Supply voltages and output signals with/without interface board
Supply Voltage RS232 Communication Analog Output
Low High Low High
With interface
board
10-30V -12V +12V 0V
4mA
5V
20mA
Without
interface board
3.7 - 5V (Pmax
= 1.6W)
0...0.4V
(TTL)
2.4…3.3V (TTL) 0 2.5V