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480 pulse generator

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Brief description:Analog radiation detector output signal can be calibrated to directly read the equivalent energy deposited in a semiconductor radiation detector at rise time line frequency pulse repetition frequency positive or negative polarity direct 0 to 10V output attenuated output 1000:1 attenuation range ORTEC Model 480 Pulse Generator simulates the output signal of a solid state or scintillation radiation detector

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Analog radiation detector output signal
Can be calibrated to directly read equivalent energy deposition in semiconductor radiation detectors
When the rise time is <10ns and the decay time constant is 200 or 400μs, there is an exponential pulse shape,
Line Frequency Pulse Repetition Frequency
Positive or negative polarity
Direct 0 to 10V output
Attenuated output with 1000:1 attenuation range

The ORTEC Model 480 Pulse Generator simulates the output signal of a solid-state or scintillation radiation detector and provides a means of checking electronic instruments in a pulse processing system. It has 1% overall accuracy, good stability as a function of temperature and time, and features front-panel controls that calibrate the instrument for direct reading of the equivalent energy deposited in the radiation detector.

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- 480 Brochure
- 480 Brochure (A4)
- 480 Pulse Generator Operation and Service Manual Revision B
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The Model 480 has a stable internal reference voltage that is effectively independent of any modular power supply or AC line voltage changes. Attenuation Output Four toggle switches in a pi attenuator arrangement provide 1000:1 attenuation. The direct output precedes the attenuator switch, providing a stable means of oscilloscope triggering. The instrument has a charge terminator and a 100 Ω voltage terminator. A charge terminator is used to convert voltage pulses into charge pulses for subsequent amplification by a charge-sensitive preamplifier. Use voltage terminators to input voltage pulses directly into other instruments such as amplifiers, discriminators, and ADCs. There is a bracket on the rear panel for storing the charge terminator when not in use.

The Model 480 pulse generator is designed to meet DOE/ER-0457T interchangeability standards. The ORTEC NIM chassis and power supplies provide all necessary power via rear module connectors. All signal levels and impedances are compatible with all other ORTEC NIM standard modules.

Specifications +

Performance

temperature instability	<±0.01%/°C，0to50°C。
voltage instability	Every change in voltage10％，<±0.005％。
Ripple and noise	pulse amplitude0.003％。
nonlinear	<± of full scale0.25%。
rise time	exponential waveform,<10 ns（10to90％）。
Fall time	The time constant is200or400μsWhen , it decays exponentially (depending on whether the direct output terminal is terminated).
Operating temperature range	0Arrive50ºC. Humidity:0Arrive95%, no condensation.

control

CAL	on the front panel22Circle potentiometer overlay62:1The amplitude range is used for pulse height control normalization to read directly at equivalent energy. Adjust both outputs.
pulse height	The front panel potentiometer is available at0 VControls the output pulse height to a value determined by the attenuator switch, calibration control setting, and termination load. Adjust the amplitude of both outputs.
attenuator	Front panel switch passes1% resistance provided1000：1step attenuation within the range (X2、X5、X10、X10）。
close/open	Front panel slide switch allows internal relays to be driven from the AC line.
Neg/Pos	A front panel slide switch determines the polarity of the output signal.

Output

Atten	front panelBNCThe connector provides a positive or negative attenuated DC coupled output with an impedance of100Ω. The amount of attenuation is set by the attenuator switch.
direct	front panelBNCConnectors provide positive or negative DC coupling0to10 Vpulse to high impedance,0to5 Vpulse to100Ω impedance. When used with associated charge terminators, this is equivalent to silicon detectors0to220 MeVenergy range.

electrical and mechanical

Required power supply	+24 V，60 mA; -24 V，60 mA; +12 V，0 mA; -12 V，0 mA; 117 V ac，8 mA（Only for driving relays）。
weight	Net weight 0.9Kilogram (2.1pounds). Shipping weight 1.8Kilogram (4.1pounds).
Size	NIMStandard single width module,3.43 x 22.13cm (1.35 x 8.714inches), consistent withDOE/ER-0457Trequirements.

Accessories(included in package)

voltage terminator	Standard100 Ω resistor terminator, connected to the direct output connector on the front panel to properly terminate the output when using only the attenuated output.
charge terminator	A specially designed terminator, mounted in the rear panel fixture, is used to properly terminate the pulse generator output and feed the charge signal into the signal input of the charge sensitive preamplifier when providing the output pulse for this type of test.

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480

pulse generator

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480 pulse generator

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