142PC Amplifier

Specifications

PERFORMANCE
 

RISE TIME Based on a +0.5 V signal through either output into a 93-W circuit and measured from 10% to 90% of peak amplitude; 25 ns at 0 pF and 150 ns at 100 pF.

SENSITIVITY Nominal, measured through either output, 6.5 V/pC.

DYNAMIC INPUT CAPACITANCE 1000 pF.

INTEGRAL NONLINEARITY £±0.05% for 0 to ±7 V open circuit or ±3.5 V terminated in 93 W.

OUTPUT LINEAR RANGE ±7 V.

TEMPERATURE INSTABILITY £±50 ppm/°C, 0 to 50°C.

DETECTOR BIAS ISOLATION ±3000 V.

OPEN LOOP GAIN ³40,000.

INPUTS

INPUT Accepts input signals from a proportional counter and extends operating bias to the proportional counter.

BIAS Accepts the bias voltage for the proportional counter from a bias supply.

TEST Accepts input voltage pulses from a pulse generator for instrument and system check and calibration; R_in = 93 W.

OUTPUTS

ENERGY AND TIMING 2 connectors furnish identical signals through 2 output paths; either or both of these outputs can be used as required, and they are interchangeable. R_o = 93 W through each connector, and the output polarity is opposite from the input pulse polarity (output pulse polarity is the same as bias polarity).

CONNECTORS

INPUT AND BIAS SHV.

TEST, ENERGY, AND TIMING BNC.

POWER CABLE 3-m (10-ft) captive power cable. ORTEC 121-C1; longer lengths available on special order.

ELECTRICAL AND MECHANICAL

POWER REQUIRED +24 V, 30 mA; –24 V, 10 mA; +12 V, 15 mA; –12 V, 15 mA. Furnished from NIM bin and power supply through any ORTEC main amplifier or from an ORTEC Model 4002P Portable Power Supply; built-in captive cable is compatible with either source.

WEIGHT
Net 0.65 kg (1.5 lb).
Shipping 1.3 kg (3.0 lb).

DIMENSIONS 4.5 X 13.2 X 10.0 cm (1.75 X 5.2 X 4.0 in.) plus 3-m (10-ft) cable.

Fig. 1. Noise as a Function of Input Capacitance, Measured with an ORTEC Model 572 Amplifier and 2-µs Time Constant.

ORDERING INFORMATION