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.
|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.|