Carrier 590A- Manuals

v SAFETY INSTRUCTIONS AND SYMBOLS This manual contains up to three lev els of safety instructions that must be observ ed in order to av oidpersonal injury and/or damage to equipment or other property. These are: DANGER Indicates a hazard that could result in death or serious bodily harm if the safet...

v i DANGER Opening the cov er of this instrument is likely to expose dangerous v oltages. Disconnect theinstrument from all v oltage sources while it is being opened. WARNING Using this instrument in a manner not specified by the manufacturer may impair the protection prov ided by the instrument. CA...

1 ORTEC MODEL 590A AMPLIFIER AND TIMING SINGLE-CHANNEL ANALYZER 1. DESCRIPTION 1.1. GENERAL The ORTEC 590A Amplifier and Timing Single-Channel Analyzer is a standard single-width NIMthat conforms to the specifications in TID-20893(Rev ). It includes both a low-noise shaping amplifierand a timing sin...

3 1.3. POLE-ZERO CANCELLATION Pole-zero cancellation is a method f or eliminatingpulse undershoot after the first differentiatingnetwork. In an amplifier not using pole-zerocancellation (Fig. 1.1), the exponential tail on thepreamplifier output signal (usually 50 to 500 : s) causes an undershoot who...

4 Fig. 1.3. Pulse Shapes for Good Signal-to-Noise Ratios. 1.5. TIMING SINGLE-CHANNEL ANALYZER The amplifier output connects internally as theTSCA input. The TSCA operates in a window mode:the peak amplitude of the amplif ied signal mustexceed the adjusted lower lev el by no more thanthe adjusted win...

5 2. SPECIFICATIONS Amplifier 2.1. PERFORMANCE SHAPING Gaussian on all ranges with peaking timeequal to 2.2 J and pulse width at 0.1% lev el equal to 4 times the peaking tim e. Bipolar crossov er equalto 1.5 J . GAIN RANGE Continuously adjustable from X5through X1250. INTEGRAL NONLINEARITY <0.05%...

6 Timing Single-Channel Analyzer 2.6. PERFORMANCE INPUT DYNAMIC RANGE 200:1. PULSE-PAIR RESOLVING TIME Minimum pulse-pair resolution # 2 : s with 0.5 : s shaping time. OUTPUT TIMING . 500 ns from peak of output pulse from amplifier. TIME SHIFT vs PULSE HEIGHT (Walk) W alk<±10 ns for a 50:1 change...

7 3. INSTALLATION 3.1. GENERAL The 590A operates on power that must be furnishedfrom a NIM-standard bin and power supply such asthe ORTEC 4001C/4002 Series. The bin and powersupply is designed for relay rack mounting. If theequipment is to be rack mounted, be sure that thereis adequate v entilation ...

8 DIRECTLY INTO THE 590A Since the input has1000 S of input impedance, the test pulse generator will normally hav e to be terminated at the amplifierinput with an additional shunt resistor. In addition, ifthe test pulse generator has a dc offset, a largeseries isolating capacitor is also required si...

9 3.7. SHORTING OR OVERLOADING THE AMPLIFIER OUTPUTS The amplifier output is dc-coupled with an outputimpedance of about 0.2 S . If the output is shorted with a direct short circuit the output stage will limitthe peak current of the output so that the amplifierwill not be harmed. W hen the amplifier...

10 4.2. FRONT PANEL CONNECTORS INPUT Accepts input pulses to be shaped and/oramplified. Compatible characteristics; positiv e ornegativ e with rise time from 10 to 650 ns; decaytime greater than 30 : s for proper pole-zero cancellation; input linear amplitude range 0 to 2 V,with a maximum limit of ±...

11 Fig. 4.2. Typical Waveforms IllustratingPole-Zero Adjustment Effects; OscilloscopeTrigger, Internal Pos.; 60 Co Source with 1.33-MeV Peak Adjusted - 9 V; Count Rate, 3 kHz; Shaping Time Constant, 1.5 : s. Fig. 4.3. A Clamp Circuit that Can BeUsed to Prevent Overloading theOscilloscope Input. U S ...

12 Fig. 4.3. Pole-Zero Adjustment Using aSquare Wave Input to the Preamplifier. Fig. 4.4. System for Measuring Amplifierand Detector Noise Resolution. 4.7. OPERATION WITH SEMICONDUCTOR DETECTORS CALIBRATION OF TEST PULSER An ORTEC419 Precision Pulse Generator, or equiv alent, iseasily calibrated so ...

13 Fig. 4.5. Noise as a Function of BiasVoltage. Fig. 4.6. System for Measuring Resolutionwith a Pulse Height Analyzer. AM P L I F I E R NO I S E AN D RE S O L UT I O NMEASUREMENTS As shown in Fig. 4.4, apr eam pl i f i er , a m p l i f i er , pul se gener at or ,oscilloscope, and wide-band rms v ol...

14 Fig. 4.7. System for Detector Current andVoltage Measurements. Fig. 4.8. Silicon Detector Back Current vsBias Voltage. a. Select the energy of interest with an ORTEC 419Precision Pulse Generator. Set the amplifier andbiased amplifier gain and bias lev el controls so thatthe energy is in a conv en...

16 Fig. 4.10. System for High-ResolutionGamma Spectroscopy. Fig. 4.11. Scintillation-Counter GammaSpectroscopy System. Fig. 4.12. HPGe Gamma SpectroscopySystem Using the 590A. Fig. 13. System for Use in X-Ray DiffractionExperiments. SCINTILLATION-COUNTER GAMMA SPECTROSCOPY SYSTEMS The ORTEC 590A can...

17 Fig. 4.14. Use of the 590A in MultichannelAnalyzer Routing. 590A allows the total x-ray diffraction electronics tobe contained in a single bin and power supply witha resultant sav ings in both cost and space. A number of 590A Amplifier and Timing Single-Channel Analyzers may be used to generate r...

18 Fig. 6.1. Circuit Used to MeasureNonlineraity. e. Decrease the Gain control from 1.5 to 0.5 andcheck to see that the output amplitude decreasesby a f actor of 3. Return the Gain control tomaximum at 1.5. f. W ith the Shaping switch set for 1.5 : s, measure the tim e to the peak on the unipolar ou...

19 5.3. SCA TEST OPERATIONAL TESTS INITIAL SETTINGS Pulser output polarity Positiv e Lower Lev el Reference Internal Uni/Bi Unipolar Pos/Neg Positiv e W indow jumper 1 V Coarse Gain 100 Fine Gain 1.0 Lower Lev el 5.00 W indow control 1.00 Adjust the Normalize and Pulse Height controls onthe pulser s...

20 Pin Function Pin Function 1 +3 V 23 Reserved 2 - 3 V 24 Reserved 3 Spare bus 25 Reserved 4 Reserved bus 26 Spare 5 Coaxial 27 Spare 6 Coaxial *28 +24 V 7 Coaxial *29 - 24 V 8 200 V dc 30 Spare bus 9 Spare 31 Spare 10 +6 V 32 Spare 11 - 6 V *33 117 V ac (hot) 12 Reserved bus *34 Power return groun...