CPC 125/65 M - irem senuhv.cheme.cmu.edu/manuals/M476401.pdfU1. Test point TP2 is used to measure...

M476401

CPC 125/65 M Channeltron Pulse Counting Electronics

for EA 125 and AR 65

Version 2.0

March15, 2000

Limburger Straße 75, 65232 Taunusstein, GermanyTel.: +49 (0)6128 987-0, Fax: +49 (0)6128 987 185

CPC 125/65 MStyle and service update July 2002

Preface 2 CPC 125/65 M

March 2000 Version 2.0

Copyright

The information in this document is subject to change without notice and does not repre-sent a commitment on the part of OMICRON Vakuumphysik GmbH. No liability shall beaccepted for any damages resulting from the use of this documentation and the relatedproduct.

��Please note: Some components described in this manual maybe optional. The delivery volume depends on the orderedconfiguration.

No part of this manual may be reproduced or transmitted in any form or by any means,electronic or mechanical, including photocopying and recording, for any purpose withoutthe express written permission of OMICRON Vakuumphysik GmbH.

Channeltron is a registered trademark of Galileo Electro-Optics Corporation. Otherproduct names mentioned herein may also be trademarks and/or registered trademarksof their respective companies.

�� Please note: This documentation is available in English only.

Attention: Please read the safety information on pages 6 and 7before using the instrument.

Related ManualsEA 125 Analyser or AR 65 Analyser

EAC 2000-125 (-65) Control Unit

EAC 300-125 (-65) Control Unit

EIS Software Manual

ComputerBoards GPIB Manual

Table 1: Related manuals.



ContentsList of Figures .......................................................................................................... 3List of Tables ........................................................................................................... 3

Conditions of CE Compliance........................................................................................ 4

1. Introduction............................................................................................................ 5Normal Use.............................................................................................................. 5

2. Safety Information ................................................................................................. 6

3. Preamplifier ............................................................................................................ 8

4. Multiplier Supplies ............................................................................................... 11

5. Optical Receiver................................................................................................... 14

6. Trouble Shooting ................................................................................................. 17

Service Procedure......................................................................................................... 19

Useful OMICRON Contacts........................................................................................... 21

Index .............................................................................................................................. 22

List of FiguresFigure 1: Preamplifier schematic circuit diagram............................................................... 8Figure 2: Multichannel preamplifier with cover removed, example. ................................... 9Figure 3: Multiplier supplies unit, multi-channel version................................................... 11Figure 4: Location of the HV adjustment potentiometers................................................. 13Figure 5: Fibre optic receiver. Block diagram of one channel. ......................................... 14Figure 6: Receiver with 5 channels fitted, schematic diagram. ........................................ 15

List of TablesTable 1: Related manuals. ................................................................................................ 2Table 2: Preamplifier jumper settings................................................................................ 8Table 3: Optical receiver jumper settings. ....................................................................... 14



Conditions of CE Compliance

OMICRON instruments are designed for use in an indoor laboratory environment. Forfurther specification of environmental requirements and proper use please refer to yourquotation and the product related documentation (i.e. all manuals, see individual packinglist).

The OMICRON Channeltron® Pulse Counting Electronics complies with CE directivesas stated in your individual delivery documentation if used unaltered and according to theguidelines in the relevant manuals.

Limits of CE Compliance

This compliance stays valid if repair work is performed according to the guidelines in therelevant manual and using original OMICRON spare parts and replacements.

This compliance also stays valid if original OMICRON upgrades or extensions areinstalled to original OMICRON systems following the attached installation guidelines.

Exceptions

OMICRON cannot guarantee compliance with CE directives for components in case of

• changes to the instrument not authorised by OMICRON, e.g.modifications, add-on's, or the addition of circuit boards orinterfaces to computers supplied by OMICRON.

The customer is responsible for CE compliance of entire experimental setups accordingto the relevant CE directives in case of

• installation of OMICRON components to an on-site system ordevice (e.g. vacuum vessel),

• installation of OMICRON supplied circuit boards to an on-sitecomputer,

• alterations and additions to the experimental setup not explicitlyapproved by OMICRON

even if performed by an OMICRON service representative.

Spare Parts

OMICRON spare parts, accessories and replacements are not individually CE labelledsince they can only be used in conjunction with other pieces of equipment.

��Please note: CE compliance for a combination of certifiedproducts can only be guaranteed with respect to the lowest levelof certification. Example: when combining a CE-compliantinstrument with a CE 96-compliant set of electronics, thecombination can only be guaranteed CE 96 compliance.

1. Introduction 5 CPC 125/65 M


1. Introduction

The CPC electronics has been designed for driving Channeltron® systems in pulsecounting mode. It comprises 3 discrete units.

• Pulse counting pre-amplifier with electronic-to-optical signal conversion

• Electron multiplier HV power supply unit

• Receiver with optical-to-electronic (TTL) signal conversion.

These units together provide a complete pulse detection facility for use with electronspectrometers. Depending on the ordered configuration the number of channels and/orboards may differ. The receiver provides two output signals: TTL pulses for digital pulsecounting equipment and an analogue signal suitable for ratemeter indication.

This manual serves as a technical reference only. For details of the setup please refer tothe relevant User's Guide.

Normal Use

The CPC electronics consists of a preamplifier, a high voltage supply and a receiver, tobe used in conjunction with Channeltron® analysers for electron spectroscopy such as theOMICRON EA 125 hemispherical analyser or AR 65 angle resolved hemisphericalanalyser.

The CPC electronics shall always be used in combination with an EA 125 systemconsisting of

EA 125 analyser U7/1, U7/5 or U7/7 AR 65 analyser, MCD1 or MCD3

EAC 2000-125 or EAC 300-125 EAC 300-65 or EAC 2000-65

PC PEN EA (or succeeding models)including EIS software package, SAC andIEEE interface board

PC PEN AR (or succeeding models)including EIS software package, SACand IEEE interface board

The CPC Electronics shall always be used

• with original cable sets which are explicitly specified for this purpose

• with all cabling connected and secured, if applicable

• with all electronics equipment switched on

• in an indoor research laboratory environment

• by personnel qualified for operating delicate scientific equipment

• in accordance with all related manuals.

Attention: Please read the safety information in all relatedmanuals before using the instrument.

2. Safety Information 6 CPC 125/65 M


2. Safety Information

� Important:• Please read this manual and the safety information in all related

manuals before installing or using the electronics equipment.• The safety notes and regulations given in this and related

documentation have to be observed at all times.

• Check for correct mains voltage before connecting any equipment.

• Do not cover any ventilation slits/holes so as to avoid overheating.

• The CPC electronics may only be handled by authorised personnel.

Warning: Lethal Voltages!!Adjustments and fault finding measurements may only be carried out byauthorised personnel qualified to handle lethal voltages.

• Lethal voltages are present at or near the connectors of the preamplifier.Extreme caution should be exercised when carrying out any testmeasurements at this part of the circuit.

• Lethal voltages are present inside the preamplifier and the high voltagesupply units.

Always• All connectors which were originally supplied with fixing screws

must always be used with their fixing screws attached and tightlysecured.

• Always disconnect the mains supplies of all electrically connectedunits before

- opening the vacuum chamber or a control unit case, - touching any cable cores or open connectors.

• Leave for a few minutes after switching off for any stored energy todischarge.

2. Safety Information 7 CPC 125/65 M


Never• Never have in-vacuum components connected to their electronics in the

corona pressure region, i.e. between 10 mbar and 10-3 mbar, so as toavoid damage due to corona discharge.

This product is only to be used:• indoors, in laboratories meeting the following requirements:

altitude up to 2000 m,temperatures between 5°C / 41°F and 40°C / 104°F (specificationsguaranteed between 20°C / 68°F and 25°C / 77°F)relative humidity less than 80% for temperatures up to 31°C / 88°F(decreasing linearly to 50% relative humidity at 40°C / 104°F)pollution degree 1 or better (according to IEC 664),overvoltage category II or better (according to IEC 664)mains supply voltage fluctuations not to exceed ±10% of thenominal voltage

3. Preamplifier 8 CPC 125/65 M


3. Preamplifier

The preamplifier connects to the Channeltron® feedthrough of the EA 125 or AR 65analyser. It receives a high voltage supply and DC power supplies from the multipliersupplies unit.

The high voltage Channeltron bias supply (max. 3.6 kV) is ripple filtered and connected tothe Channeltron output.

Capacitor C1 isolates the high voltage between the multiplier output and sensing amplifierU1. Test point TP2 is used to measure the output pulse from U1 using an oscilloscope.

Here the pulse height is in the region of 300 mV to 1.3 V, 25 ns to 30 ns wide.

Amplifier U2 is a high speed comparator which detects the pulses which exceed thethreshold level set by RV1. The threshold level is usually set in the region of 50 mV andcan be measured between TP3 and TP4.

inputprotection

widebandpulse amplifier

thresholdlevel control

high speedcomparator

dead timecontrol

fibre opticdriver

TP95 ms

channeltronoutput

70 ns

TP2 TP3

RV1

Oscilloscope

≈ 25 nsC1 U1 U2

U3

LED2

U4

VR1

TP4

≤ 1.3V

TP7

123

123

LK2 LK3

U8 / U9

pulsestretcher

pulse displayindicator

LED1

TP1

Figure 1. Preamplifier schematic circuit diagram. Typical DC level at TP3is 50 mV; adjust according to system noise.

The combination of U8 + U9 produces pulse widths depending on the settings of LK2 andLK3 (default setting: 35 ns pulse width, 70 ns dead time). The output of this is used totrigger a monostable pulse stretcher U4, the optical fibre driver U3, Q1,2,3,4 and theoptical fibre LED1. Note that the optical fibre LED is always on.

Link 2 Link 3 Pulse Width Dead Time1-2 - 35 ns 70 ns2-3 - 40 ns 80 ns- 1-2 70 ns 130 ns- 2-3 invalid setting invalid setting

Table 2. Preamplifier jumper settings, see also figure 1.



(cover removed)

...(top view)

MULTICHANNEL PRE-AMP

LED MONITOR

OPTICAL SIGNAL OUTPUT

TP4TP3 (0V)

RV1 TRESHOLD ADJUST

THRESHOLDMONITORING( )

TP1 (GND)TP2 PREAMP OUTPUT

Figure 2. EA 125 multichannel preamplifier top view and with coverremoved, example. Note that the number of channels variesaccording to the ordered configuration.

General Information

OperatingPrinciple

voltage amplification

Linear Gain ≈ 100

Signal Input

Impedance 100 Ω

Protection Si diode + gas arrestor

Monitor Output

Threshold Monitor discriminator voltage, level adjustable 0 to +800 mV

Specifications Pre-Amplifier EA 125 AR 65

weight one channel version 4.5 kg 2.2 kgweight three channel version - 2.3 kgweight five channel version 5.1 kg -weight seven channel version 5.4 kg -dimensions 28 cm × 23 cm × 11 cm 20 cm × 14 cm × 9 cm

��Please note: The multi-channel preamplifier case variesaccording to the number of channels.

Panel Elements



CEM SUPPLIES 15-pin male socket for Channeltron rear bias supplies. For thepinout please refer to page 12.

DC SUPPLIES

23

4 1

4-pin twist lock DIN, female.

Power requirements: ±9 V to ±13 V DC unregulated.Pin assignments: pin 1: GND

pin 2: + Vpin 3: - Vpin 4: GND

- V + V LEDs indicate normal functioning when lit.

4. Multiplier Supplies 11 CPC 125/65 M


4. Multiplier Supplies

23

4 1

0 1

Figure 3. Multiplier supplies unit. Schematic diagram.

Rear Panel

FRINGEFIELD SHV connector

FRONTBIAS SHV connector

FRINGEFIELD ISS SHV connector only fitted in ISS versions, blanked otherwise.

FRONTBIAS ISS SHV connector only fitted in ISS versions, blanked otherwise.

DC SUPPLIES

23

4 1

4-pin twist lock DIN, female.

Power requirements: ±9 V to ±13 V DC unregulated.Pin assignments: pin 1: GND

pin 2: + Vpin 3: - Vpin 4: GND

F. B.ADJUST

Trimmer potentiometer for Channeltron front bias



CEM SUPPLIES 15-pin female socket for Channeltron rear bias supplies (highvoltage).Pin assignments: pin A: CH1 HV

pin B: CH2 HVpin C: CH3 HVpin D: CH4 HVpin E: CH5 HVpin F: CH6 HVpin H: CH7 HVpin P: HV PROTECTpin R: HV PROTECTpin S: SCREENS

Please note: HV will not be switched on unless pins P + R arelinked.

CEM ON/OFF

1

23

3-pin MINI DIN for Channeltron ON/OFF control.Attention: upon connecting pins "1" and "2" the multiplier highvoltage is on.

- V + V LEDs indicate normal functioning when lit.

-70V -15V

+15V+70V

LEDs indicate normal functioning when lit.

Fan.

FUSE

MAINS INPUT

This unit is supplied with a 3-pin standard European mainssocket for AC input of 100, 110, 120, 200, 220, 240 volts ±5% and50 or 60 Hz, set to customer specification. The wire insulations ofthe standard 3-lead mains cable are coloured in accordance withthe following code:

Brown: LiveGreen/Yellow: EarthBlue: Neutral

Mains fuse(s): 5 mm ∅, 20 mm long

use 1 A ("T") for 200-240 V AC2 A ("T") for 100-120 V AC

To change the fuse• disconnect mains• lift the flap using a screw driver for leverage• replace the fuse as indicated above• re-fit the fuse holder.



Front Panel

OUTPUTADJUST

10-turn potentiometer for Channeltron® output adjustment.Range: 250 V to 3.6 kV max.

MULT ON LED warning that multiplier HV is on

Top panel

H.V.ADJUST

Channeltron® HV ADJUST: each supply individually adjustable by20-turn trimmer potentiometers accessible by removing the toppanel.

Figure 4. Location of the HV adjustment potentiometers.

Multiplier HV Supply Specifications

Range 250 V to 3.6 kVStability ≤1%/week, 0.2%/hourDimensions and weight 2 U rackmount case. Weight 5.6 kg

5. Optical Receiver 14 CPC 125/65 M


5. Optical Receiver

The optical receiver detects the low level pulses transmitted by the preamplifier. Theseare then differentially amplified by U1 to remove noise and to define the pulses. Theoutput U1 is then shaped using a differential line receiver (U2) and inverted by aprogrammable slew rate driver (U3). The polarity of the pulses transferred to thecomputer counting board is selected by link LK2.

The F/V converter (U5) is connected to produce an analogue output which is proportionalto the count rate with a sensitivity of 10 V per 1 Mcps or 10 V per 100 kcps dependent onthe setting of link LK1. This voltage is then passed through a filter and ripple rejectionstage. The polarity of the output signal is selected by link LK3.

LK1 LK2 LK3 Function1-2 Positive pulse

2-3 Negative pulse

1-2 Ratemeter 100 kHz full scale

2-3 Ratemeter 1 MHz full scale

1-2 F-V output FSD-10 V

2-3 F-V output FSD+10 V

Table 3. Optical receiver jumper settings, see also figure 5.

Connecting a multimeter to the analogue output makes a simple ratemeter.

inverter

LK1

pulseshaper

1

2

3

LED DISPLAYNote: visible only at high cps.

analogue output0 to +/-10 V = 100 kHz / 1 MHz

LK3

LK2

1

2

3

1

2

3TP6

differentialamplifier

opticaldetector

to computer

filter /ripple

reduction

F / Vconverter

-1

divide by 10

R

U1 U2 U3

U4

U5

U6

Figure 5. Fibre optic receiver. Block diagram of one channel.



rear panel

front paneloptical signal inputs

analogue voltage outputs

0 1

LEDs

Figure 6. Receiver with 5 channels fitted, schematic diagram. Note thatthe number of channels varies according to the orderedconfiguration.

Panel Elements

1 8

159

15-pin D-sub connector for 3-channel TTL count output to thecomputer.Pin assignments: pin 8 counter 1

pin 15 counter 2pin 7 counter 3pin 5 counter 4pin 13 counter 5pin 6 counter 6pin 10 counter 7pin 12 SCREEN

-15V +15V +5V LEDs indicate normal functioning when lit.

Clip socket with internal photo-diode for optical signal input. Therelated plug contains a fibre optic cable. It should be orientedcorrectly, i.e. with the press-on clip towards the open part of thesocket.

LEDs indicate counts present (brightness indicates count rate).

1

2

3

3-pin MINI-DIN socket for analogue voltage output.Pin assignments: pin 1: signal

pin 2: (not connected)pin 3: GND



01

FUSE

MAINS INPUT

This unit is supplied with a 3-pin standard European mainssocket for AC input of 100/200 or 110/120/220/240 volts ±5% and50 Hz or 60 Hz, set to customer specification. The wire insulationsof the standard 3-lead mains cable are coloured in accordance withthe following code:

Brown: LiveGreen/Yellow: EarthBlue: Neutral

Mains fuse(s): 5 mm ∅, 20 mm long

use 1 A ("T") for 200-240 V AC2 A ("T") for 100-120 V AC

To change the fuse• disconnect mains• lift the flap using a screw driver for leverage• replace the fuse as indicated above• re-fit the fuse holder.

Receiver Specifications

Size and weight 280 mm × 280 mm × 60 mm, 3.4 kgRange 0 to 14 MHzF-V output 0 to ±10 V for 0 to 100 kHz / 1 MHz

6. Trouble Shooting 17 CPC 125/65 M


6. Trouble Shooting

If the system shows a malfunction and you suspect the preamplifier is faulty, follow theprocedure below.

Warning: Lethal Voltages!!Adjustments and fault finding measurements as well asinstallation procedures and repair work may only be carried outby authorised personnel qualified to handle lethal voltages.

Caution: Never remove the front panel on the preamplifier unitwith the multiplier HV switched on. Up to 3.6 kV are presentinside the unit.

Attention: Please replace any panels or covers after work hasbeen carried out on any electrical unit.

General Operational Test of the Preamplifier

• Switch the Channeltron® high voltage off.

• Switch the mains supply off to the multiplier unit.

• Remove the front panel on the preamplifier unit.

• Switch the mains to the multiplier unit on, making sure the redmultiplier LED on the front panel of the EAC 300 or the EAC 2000 isnot lit.

• Disconnect the input of the preamplifier from the Channeltron® andturn the level trimmer "Discr. Level Adjust" RV1 fully anticlockwisefor maximum sensitivity.

• Attention: never use a bare wire or non-insulated screw driveras there may still be high voltage present due to chargedcapacitors. Touch the inner contact of the SHV-connector"Channeltron® Signal Input" with an insulated screw driver. Theratemeter in the receiver should show a high count rate.Alternatively observe the count indicator LED.

6. Trouble Shooting 18 CPC 125/65 M


If the preamplifier shows no output signal the supply voltage has to be checked.

• Are the power indicator LEDs illuminated? If yes, continue with theoperational test on the following page.

• If the power indicator LEDs are not illuminated then open the lid ofthe box and measure the voltages at test points TP10 (+V) and TP9(-V) with respect to TP8. The voltmeter should show the followingvoltages:

Test Point VoltagesTP8 0 VTP9 -9 V to -13 V DC unregulatedTP10 +9 V to +13 V DC unregulated

If one of these voltages is incorrect or missing, check the voltages at the preamplifierpower outlet at the Channeltron power supply unit. The supply voltage for the preamplifiershould be ±9 V to ±13 V unregulated.

Operational Test (Multiplier and Preamp)

Caution: The multiplier high voltage must only be switched onafter all electrical connections have been made.

• Connect an oscilloscope (minimum bandwidth 40 MHz) to the"Signal Monitor" output of the preamplifier (TP2 = signal,TP1 = GND) using a 10:1 probe.

• The oscilloscope shows pulses with a positive polarity if the systemhas been set to produce output pulses and the Channeltron worksproperly. Note that the polarity of the pulses at TP2 is invertedcompared to the polarity of the input pulses.

• If the oscilloscope is set to the correct trigger level the first triggerpulse appears on the screen, followed by an evenly illuminatedband because the pulses appear at statistically distributed intervals.Periodical interference caused for example by turbo molecularpumps can be clearly made out as brighter regions in this band.

• The output pulses have a pulse width of 10 ns to 25 ns and anamplitude about 200 mV to 1.3 V at "Signal Monitor", depending onthe Channeltron type and voltage.

If you still suspect a fault within the preamplifier or detection system please contact theOMICRON service department, preferably using the FAX form provided on page 20

Omicron NanoTechnology GmbH February 2002

Service at OmicronService at OmicronService at OmicronService at Omicron

Should your equipment require servicerequire servicerequire servicerequire service

• Please contact Omicroncontact Omicroncontact Omicroncontact Omicron headquarters or your local Omicron representativeto discuss the problem. An up-to-date address list is available on ourwebsite under

http://www.omicron.de/om-adr.htmlhttp://www.omicron.de/om-adr.htmlhttp://www.omicron.de/om-adr.htmlhttp://www.omicron.de/om-adr.html

or via e-mail reply service under

[email protected]@[email protected]@omicron.de.

• Make sure all necessary information is supplied. Always note the serialnote the serialnote the serialnote the serialnumber(s)number(s)number(s)number(s) of your instrument and related equipment (e.g. head,electronics, preamp) or have it at hand when calling.

If you have to send any equipment back to Omicronsend any equipment back to Omicronsend any equipment back to Omicronsend any equipment back to Omicron

• Please contact Omicron Omicron Omicron Omicron headquartersheadquartersheadquartersheadquarters before shipping any equipment.

• Place the instrument in a polythene bag.

• Reuse the original packaging and transport locks.Reuse the original packaging and transport locks.Reuse the original packaging and transport locks.Reuse the original packaging and transport locks.

• Take out a transport insurance policy.transport insurance policy.transport insurance policy.transport insurance policy.

For ALL vacuum equipment:For ALL vacuum equipment:For ALL vacuum equipment:For ALL vacuum equipment:

• Include a filled-in and signed copy of the "Declaration of Decontamination"form which can be found at the back of the equipment manual.

No repair of vacuum equipment without a legally bindingNo repair of vacuum equipment without a legally bindingNo repair of vacuum equipment without a legally bindingNo repair of vacuum equipment without a legally bindingsigned deconsigned deconsigned deconsigned decontatatatamimimimination declaration !nation declaration !nation declaration !nation declaration !

• Wear suitable cotton or polythene gloves when handling the equipment.

• Re-insert all transport locks (Re-insert all transport locks (Re-insert all transport locks (Re-insert all transport locks (if applicable).).).).

• Cover the instrument with aluminium foil and/or place it in a polythenebag. Make sure no dust or packaging materials can contaminate theinstrument

• Make sure the plastic transport cylinder (plastic transport cylinder (plastic transport cylinder (plastic transport cylinder (if applicable)))) is cleanis cleanis cleanis clean.

• Fix the instrument to its plastic cylinder (if applicable).


Service FAX ReplyService FAX ReplyService FAX ReplyService FAX ReplyToToToToOMICRON NanoTechnology GmbHOMICRON NanoTechnology GmbHOMICRON NanoTechnology GmbHOMICRON NanoTechnology GmbH

Test and Service DepartmentLimburger Straße 7565232 TaunussteinGermany

Tel: +49 - 61 28 - 987 230FAX: +49 - 61 28 - 987 33 230FAX: +49 - 61 28 - 987 33 230FAX: +49 - 61 28 - 987 33 230FAX: +49 - 61 28 - 987 33 230

FromFromFromFrom......................................................

......................................................

......................................................

......................................................

......................................................

......................................................Tel: ...............................................FAX: ..............................................

Type of InstrumentType of InstrumentType of InstrumentType of Instrument ......................................................................................................

Serial NumberSerial NumberSerial NumberSerial Number ......................................................................................................

Purchasing DatePurchasing DatePurchasing DatePurchasing Date ......................................................................................................

(Last Service Date(Last Service Date(Last Service Date(Last Service Date ...................................................................................................... ))))

Problem:Problem:Problem:Problem:

Date:Date:Date:Date: Signature:Signature:Signature:Signature:


Useful OMICRON ContactsUseful OMICRON ContactsUseful OMICRON ContactsUseful OMICRON Contacts

An up-to-date address list is available on our website under

http://www.omicron.de/om-adr.htmlhttp://www.omicron.de/om-adr.htmlhttp://www.omicron.de/om-adr.htmlhttp://www.omicron.de/om-adr.html

or via e-mail reply service under

[email protected]@[email protected]@omicron.de.

Index 22 CPC 125/65 M


Index

Aadjustments.............................................6; 17analyser, hemispherical ................................5application, field of ........................................5

CCE compliance, conditions of........................4Channeltron.................................................18circuit diagram

optical receiver ........................................ 14pre-amp..................................................... 8

copyright........................................................2

Ddead time jumper settings.............................8

EEAC 2000......................................................5EAC 300........................................................5

Ffault finding..............................................6; 17fuses .....................................................12; 16

Hhemispherical analyser .................................5

Jjumper settings

optical receiver ........................................ 14pre-amp..................................................... 8

Llethal voltages .........................................6; 17limitations ......................................................7

Mmalfunction..................................................17measurements, fault finding....................6; 17multiplier supplies........................................11

Nnormal use ....................................................5

Ooptical receiver ............................................14oscilloscope.................................................18

Ppower connector....................................10; 11preamplifier ...................................................8preamplifier schematic diagram....................8pulse counting...............................................5

Rratemeter.....................................................14receiver jumper settings..............................14receiver, optical ...........................................14

Ssafety information..............................6; 17; 18service procedure .......................................19specifications

multiplier supplies.................................... 13optical receiver ........................................ 16pre-amp..................................................... 9

Ttrouble shooting...........................................17

Vvoltage, lethal ..........................................6; 17

CPC 125/65 M - irem senuhv.cheme.cmu.edu/manuals/M476401.pdfU1. Test point TP2 is used to measure...

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Transcript of CPC 125/65 M - irem senuhv.cheme.cmu.edu/manuals/M476401.pdfU1. Test point TP2 is used to measure...