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Advanced Measurement Technology, Inc.

a/k/a/ ORTEC

®

, a subsidiary of AMETEK

®

, Inc.

WARRANTY

ORTEC* warrants that the items will be delivered free from defects in material or workmanship. ORTEC makes
no other warranties, express or implied, and specifically NO WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.

ORTEC’s exclusive liability is limited to repairing or replacing at ORTEC’s option, items found by ORTEC to
be defective in workmanship or materials within one year from the date of delivery. ORTEC’s liability on any
claim of any kind, including negligence, loss, or damages arising out of, connected with, or from the performance
or breach thereof, or from the manufacture, sale, delivery, resale, repair, or use of any item or services covered
by this agreement or purchase order, shall in no case exceed the price allocable to the item or service furnished
or any part thereof that gives rise to the claim. In the event ORTEC fails to manufacture or deliver items called
for in this agreement or purchase order, ORTEC’s exclusive liability and buyer’s exclusive remedy shall be release
of the buyer from the obligation to pay the purchase price. In no event shall ORTEC be liable for special or
consequential damages.

Quality Control

Before being approved for shipment, each ORTEC instrument must pass a stringent set of quality control tests
designed to expose any flaws in materials or workmanship. Permanent records of these tests are maintained for
use in warranty repair and as a source of statistical information for design improvements.

Repair Service

If it becomes necessary to return this instrument for repair, it is essential that Customer Services be contacted in
advance of its return so that a Return Authorization Number can be assigned to the unit. Also, ORTEC must be
informed, either in writing, by telephone [(865) 482-4411] or by facsimile transmission [(865) 483-2133], of the
nature of the fault of the instrument being returned and of the model, serial, and revision ("Rev" on rear panel)
numbers. Failure to do so may cause unnecessary delays in getting the unit repaired. The ORTEC standard
procedure requires that instruments returned for repair pass the same quality control tests that are used for
new-production instruments. Instruments that are returned should be packed so that they will withstand normal
transit handling and must be shipped PREPAID via Air Parcel Post or United Parcel Service to the designated
ORTEC repair center. The address label and the package should include the Return Authorization Number
assigned. Instruments being returned that are damaged in transit due to inadequate packing will be repaired at the
sender's expense, and it will be the sender's responsibility to make claim with the shipper. Instruments not in
warranty should follow the same procedure and ORTEC will provide a quotation.

Damage in Transit

Shipments should be examined immediately upon receipt for evidence of external or concealed damage. The carrier
making delivery should be notified immediately of any such damage, since the carrier is normally liable for damage
in shipment. Packing materials, waybills, and other such documentation should be preserved in order to establish
claims. After such notification to the carrier, please notify ORTEC of the circumstances so that assistance can be
provided in making damage claims and in providing replacement equipment, if necessary.

Copyright © 2002, Advanced Measurement Technology, Inc. All rights reserved. 

*ORTEC

®

 is a registered trademark of Advanced Measurement Technology, Inc. All other trademarks used

herein are the property of their respective owners. 

Summary of Contents for 142PC

Page 1: ...Model 142PC Preamplifier Operating and Service Manual Printed in U S A ORTEC Part No 717600 1202 Manual Revision B...

Page 2: ...n so that a Return Authorization Number can be assigned to the unit Also ORTEC must be informed either in writing by telephone 865 482 4411 or by facsimile transmission 865 483 2133 of the nature of t...

Page 3: ...2 2 5 ELECTRICAL AND MECHANICAL 2 3 INSTALLATION 3 3 1 CONNECTION TO PROPORTIONAL COUNTER 3 3 2 CONNECTION TO AMPLIFIERS 3 3 3 INPUT POWER 3 3 4 TEST PULSE 3 3 5 DETECTOR BIAS INPUT 4 4 OPERATION 4 4...

Page 4: ...iv...

Page 5: ...e Input connector on the preamplifier 2 Discharge the bias circuitry before making any connections to the Input connector and before disconnecting the preamplifier from the proportional counter 3 To d...

Page 6: ...a hazard that could result in bodily harm if the safety instruction is not observed CAUTION Indicates a hazard that could result in property damage if the safety instruction is not observed Please re...

Page 7: ...the instrument during external cleaning use only enough liquid to dampen the cloth or applicator SAFETY WARNINGS AND CLEANING INSTRUCTIONS Cleaning Instructions To clean the instrument exterior Unplug...

Page 8: ...viii...

Page 9: ...y long cable lengths can be used between the proportional counter and the preamplifier without disrupting the system stability An internal risetime compensation adjustment is accessible through a hole...

Page 10: ...rtional counter BIAS Accepts the bias voltage for the proportional counter from a bias supply TEST PULSE Accepts input voltage pulses from a pulse generator for instrument and system check and calibra...

Page 11: ...ther the E or T output connector is not being used it should simply be left open circuited unterminated 3 3 INPUT POWER Power for the 142PC is supplied through the Power Cable that is captive through...

Page 12: ...should be furnished with the bias supply module 4 OPERATION 4 1 GENERAL When the 142PC is installed according to the appropriate information in Section 3 it operates at all times when power is applie...

Page 13: ...The energy output signal from the preamplifier is a fast risetime voltage step with an exponential return to the baseline in about 75 s The polarity of signals through the E output is inverted from t...

Page 14: ...timing experiments typical risetimes of 25 to 150 ns for detector capacities from 1 to 100 pF the total cable length should be kept as short as possible even though it is terminated Due to vagaries i...

Page 15: ...ue only to the noise contribution of the preamplifier and main amplifier The analyzer can be calibrated in terms of keV per channel by observing two different pulser peaks of known energy and the FWHM...

Page 16: ...hed charge termination to measure the rise time of the 142PC through the T or E output connector Connect the 419 output through the charge terminator to the input of the 142PC and use an oscilloscope...

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