Model BH-1Tail Pulse Generator
The Model BH-1 is a tail pulse generator which simulates the broad range of pulses encountered in the nuclear field. Typical applications of the Model BH-1 include: determining the proper timing of linear gates and coincidence units, linearity measurements of amplifiers, threshold setting of discriminators and single channel analyzers, and measuring resolution flow noise amplifiers.
OVERVIEW
FEATURES
Repetition rate: 10 Hz - 1 MHz
Delay adjustable from -50 ns to 10 ms
Rise time: 20 ns - 50 µs
Fall time: 50 ns - 1000 /°s
Integral linearity of amplitude: ±0.1%
Output amplitude: to 9.99 volts from 50 ohms
Amplitude jitter: less than 0.002% rms
SPECIFICATIONS
Frequency
10 Hz to 1 MHz, continuously adjustable.
External Trigger
Requires 1 volt, positive pulse.
Single Cycle
One pulse occurs each time the push button is pressed.
Single/Double Pulse
This toggle provides for a pulse pair whose separation is varied by the delay controls.
Minimum separation is 50 ns.
Rise Time of Output (10-90%)
20 ns to 50 us (in 11 steps), exponential shape and independent of decay time.
Decay Time Constant of Output(100-37%)
50 ns to 1000 us (in 11 steps), exponential shape and independent of risetime for decay/rise time >10.
Trigger Out
Positive 3 volt pulse, 10 ns rise time, 0.2 us witdh, 50 ohms output impedance.
Delay
-50 ns advance to 10 ms delay (between Trigger Out and leading edge of output pulse).
Output Amplitude
Zero to 9.99 volts maximum. Adjustable by ten-turn potentiometer.
Attenuator
X10 and X100 providing up to 1000: 1.
Integral Linearity of Output
±0.1%.
Duty Factor Effect
Amplitude shift less than 0.1% below 30% duty factor. Duty factor in percent for tail pulses is defined as: (8 decay time constants/pulse spacing) X100.
Output Polarity
Positive or negative.
Output Impedance
50 ohms.
External Reference Input
±15 volts max.
Jitter of Frequency and Delay
Less than 0.1%.
Temperature Coefficient of Output
Less than 0.03%/°C.
Amplitude Jitter (Resolution)
Less than 0.01% peak, 0.002% rms of pulse amplitude.
Power Required
+24 V at 50 mA, -24 V at 50 mA, +12 V at 175 mA, -12 V at 80 mA.
Mechanical Dimensions
Double-witdh AEC module, 2.70 inches wide by 8.70 inches high. Conformsto AEC Report TID-20893 (Rev. 2).
Weight
3.5 lbs. net, shipping 7 Ibs.
描述 [描述] BH-1是一种尾部脉冲发生器,它模拟在核场中遇到的大范围脉冲