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DANGER

Opening the cover of this instrument is likely to expose dangerous voltages. Disconnect the
instrument from all voltage sources while it is being opened.

WARNING Using this instrument in a manner not specified by the manufacturer may impair the

protection provided by the instrument.

CAUTION To prevent moisture inside of 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 the instrument from the ac power supply.

!

Remove loose dust on the outside of the instrument with a lint-free cloth. 

!

Remove remaining dirt with a lint-free cloth dampened in a general-purpose detergent and water
solution. Do not use abrasive cleaners.

!

Allow the instrument to dry completely before reconnecting it to the power source.

Содержание 142IH

Страница 1: ...Model 142IH Preamplifier Operating and Service Manual Printed in U S A ORTEC Part No 717590 1202 Manual Revision C...

Страница 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...

Страница 3: ...TS 3 2 4 CONNECTORS 3 2 5 ELECTRICAL AND MECHANICAL 3 3 INSTALLATION 3 3 1 CONNECTION TO DETECTOR 3 3 2 CONNECTION TO AMPLIFIERS 4 3 3 INPUT POWER 4 3 4 TEST PULSE 4 3 5 DETECTOR BIAS INPUT 4 4 OPERAT...

Страница 4: ...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...

Страница 5: ...he 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...

Страница 6: ...vi...

Страница 7: ...ry before connecting a low impedance a cable or any other capacitive device to the Input connector on the preamplifier 2 Discharge the bias circuitry before making any connections to the Input connect...

Страница 8: ...resistance on the input so that relatively long cable lengths can be used between the detector and the preamplifier without disrupting the system stability A Test Pulse connector with built in charge...

Страница 9: ...t polarity is opposite from the input pulse polarity output pulse polarity is the same as bias polarity 2 4 CONNECTORS INPUT and BIAS Type SHV TEST PULSE E and T Type BNC POWER CABLE 10 ft 3 m captive...

Страница 10: ...se for energy calibration can be accepted through the Test Pulse input connector on the 142IH without the use of an external charge terminator The test input of the preamplifier has an input impedance...

Страница 11: ...n ORTEC 114 Preamplifier Power Supply Figure 4 1 is a simplified block diagram of the circuits in the 142IH Preamplifier The complete circuit is shown in schematic 142IH 0201 S1 included at the back o...

Страница 12: ...amplifier Input 4 4 TIMING OUTPUT The T output connector provides an alternate path for the same output pulses that are furnished through the E output connector The intent is to provide both connectio...

Страница 13: ...t shown for zero external capacity In any case the Input connector and capacitors when used should be completely shielded electrically A wrapping of aluminum foil around the Input connector or a shiel...

Страница 14: ...d parameters By use of the above equation and with a knowledge of the noise of the preamplifier the noise width of the detector can be determined The significance of this noise width in evaluating the...

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