480 Pulser

Specifications

PERFORMANCE

TEMPERATURE INSTABILITY <±0.01%/°C, 0 to 50°C.

LINE VOLTAGE INSTABILITY <±0.005% per 10% change in line voltage.

RIPPLE AND NOISE 0.003% of pulse amplitude.

NONLINEARITY <±0.25% of full scale.

RISE TIME Exponential waveform, <10 ns (10 to 90%).

FALL TIME Exponential decay with 200- or 400-µs time constant (depending on whether or not the direct output is terminated).

CONTROLS

CAL 22-turn potentiometer on front panel covers 62:1 amplitude span for normalization of Pulse Height control to read directly in equivalent energy.

PULSE HEIGHT Front-panel potentiometer controls output pulse height from 0 V to the maximum determined by the Attenuator switches, the Cal control setting, and the termination load.

ATTENUATOR Front-panel switches provide step attenuation over 1000:1 range with 1% resistors (X2, X5, X10, X10).

OFF/ON Front-panel slide switch allows internal relay to be driven from the ac line.

NEG/POS Front-panel slide switch determines polarity of the output signal.

OUTPUTS

ATTEN Front-panel BNC connector provides positive or negative attenuated dc-coupled output with an impedance of 100 W. Amount of attenuation is set by the Attenuator switches.

DIRECT Front-panel BNC connector provides positive or negative dc-coupled 0 to 1 0 V pulse into a high impedance and 0 to 5 V maximum pulse into 100 W. This is equivalent to a range of 0 to 220-MeV energy referred to a silicon detector, when used with associated charge terminator.

ELECTRICAL AND MECHANICAL

POWER REQUIRED +24 V, 60 mA; –24 V, 60 mA; +12 V, 0 mA; –12 V, 0 mA; 117 V ac, 8 mA (used only to drive relay).

WEIGHT
Net 0.9 kg (2.1 lb).
Shipping 1.8 kg (4.1 lb).

DIMENSIONS NIM-standard single-width module 3.43 X 22.13 cm (1.35 X 8.714 in.) per DOE/ER-0457T.

INCLUDED ACCESSORIES

VOLTAGE TERMINATOR A standard 100-W resistive terminator is attached to the Direct Output connector on the front panel to terminate the output correctly when only the Attenuated Output is being used.

CHARGE TERMINATOR A specially constructed terminator is mounted in a rear-panel clip and should be used to properly terminate the pulser output and feed a charge signal into the signal input of a charge-sensitive preamplifier when the output pulses are being furnished for this type of test.

ORDERING INFORMATION