The Model DB-2 is a pulse generator which accurately simulates the random and pile-up characteristics of pulses from a radiation detector. It provides pulses which are mono-energetic over a broad range of average count rates. Under high count rate conditions, the pulses will pile up as shown in the diagram below. This characteristics is useful in determining pile-up or count-rate effects and in measuring the resolution of high count rate spectroscopy systems. Besides random pulse, the Model DB-2 also provides mono energetic repetitive pulses. In this mode, the DB-2 is an excellent general purpose pulser. When the EXT REF input is used with an external ramp, the DB-2 provides sliding pulses to quickly check system or component linearity.
Berkeley BNC Model DB-2 NIM Random Pulse Generator 10 Hz To 1 MHz
Ordering Information
Please allow 3 - 6 weeks for this product to arrive.
This product comes with a 2 year (24 Month) warranty.
Technical Specifications
SPECIFICATIONS
Rep Rate (Count Rate) 10 Hz to 1 MHz [ Continuously Adjustable] Mode Random or Repetitive Random Distribution Poisson for intervals greater than 1.4 µs Pulse Shape Tail Pulse Rise Time of Outputs (10-90%) 0.1-20 µs ( 8 steps ) Decay Time Constant (100-37%) 5-1000 µs ( 8 steps )
Rise and Decay time independent of each other for Decay Time/ Rise Time > 10.Pulse Amplitude (STEP) Characterization Amplitude Shift with Count Rate: < 0.05% from 10 Hz to 100 kHz
Jitter (resolution): 0.01% RMS
Temperature Coefficient: 0.02%/˚CFrequency Jitter (Repetitive Mode) < 0.1% External Trigger Input Requires 1 V Positive Pulse
1 kΩ input impedanceTrigger Output 3 V 100 ns Pulse Width
20 ns rise time
50 Ω Output impedanceOutput Amplitude Ranges Repetitive: 0 to 10 V
Random: 0 to 1 V
Adjustable by 10-turn Potentiometer from zero to maximum.Normalize 40% to 100% of Amplitude via 10-Turn Potentiometer Pulse Output Polarity Positive or Negative Attenuation 4 Step Attenuators [x2, x5, x10, and x10] combination to make maximum of x1000 External Reference Input 0 to 10 VDC; 10kΩ Input impedance Power Requirements + 24 V at 65 mA
- 24 V at 65 mA
+12V at 140 mA
-12 V at 40 mA
*See BNC Model AP-3 for portable applicationsDimension Double-width NIM module; 2.70" wide by 8.70" high in accordance with TID-20893 (Rev. 3) Weight 3.5 lbs. net; 7 lbs. shipping Features and Applications
Features
- Random Tail pulses for MCA, PHA Pile-up and Dead-time Testing
- Continuously Adjustable Rates from 10 Hz to 1 MHz
