ACE Mate™ Preamplifier, Amplifier,  Bias Supply and SCA
(925-SCINT)

Specifications

PREAMPLIFIER

INPUT  Input stage is ac-coupled. Diode protected against sudden positive or negative voltage spikes.

IN/OUT  PWB slide switch provides preamplifier selection. The IN position allows the internal preamplifier to function. The OUT position allows an external preamplifier to be directly connected to the amplifier using the Input BNC connector.

AMPLIFIER

GAIN RANGE  Continuously adjustable from 5 to 1250 using six-position front-panel COARSE GAIN switch and a ten-turn direct reading FINE GAIN potentiometer.

PULSE SHAPE  Peaking time equals 2 µs and is semi-Gaussian bipolar.

POS/NEG  PWB slide switch selects either positive or negative input pulse polarity.

INPUT  Accepts either the output of the internal preamplifier or a signal from the rear-panel BNC connector. External input signals can be positive or negative, with rise times <1 µs and decay times >40 µs; Z_in = 1000 W; ac-coupled; linear maximum input 2 V; absolute maximum 20 V.

OUTPUT  Rear-panel BNC connector with Z_out <1 W is short-circuit proof and positive lobe leading, with a full-scale linear range from 0 to 10 V. Active filter shaping is incorporated.

PREAMP POWER  Rear-panel standard ORTEC preamp power connector (Amphenol 17-10090) mates with captive and noncaptive power cords on all ORTEC preamplifiers.

SINGLE-CHANNEL ANALYZER

DYNAMIC RANGE  200:1.

UL  Front-panel screwdriver-adjustable potentiometer determines the upper level (0.05–9.99 V). Control setting is read on the front-panel digital display.

LL  Front-panel screwdriver-adjustable potentiometer determines the lower level (0.05–9.99 V). Control setting is read on the front-panel digital display.

LOWER LEVEL REFERENCE CONTROL  A PWB jumper selects either the front-panel LL potentiometer or the positive voltage signal applied to the rear-panel EXT LL REF BNC connector. SCA INPUT is internally connected to the amplifier output.

SCA OUTPUT  Rear-panel BNC connector provides TTL compatible signal; output amplitude >3 V, pulse width approximately 0.5 µs. Output occurs as the trailing edge of the amplifier output crosses the LL threshold.

SCA INPUT  Internally connected to the output of the amplifier.

RATEMETER

INPUT  Ratemeter input is internally connected to the SCA output.

OUTPUT  Ratemeter output can be read on the front-panel 3-digit digital display. The range is from 0 to 99.9 kcps.

HIGH-VOLTAGE SUPPLY

OUTPUT  PWB jumper selects either positive or negative high-voltage output and is available at rear-panel  SHV connector.

OUTPUT RANGE  50 to 2000 V.

OUTPUT LOAD CAPACITY  1 mA to 2000 V.

HV CONTROL  A front-panel HV ON/OFF switch provides control of the high-voltage supply when the main ac power switch is on.

OUTPUT ADJUST  A 3-turn precision potentiometer adjusts the output from 0 to 2000 V.

REGULATION  <0.02%.

OUTPUT RIPPLE  <15 mV rms at 1 kV, 1 mA load.

STABILITY  <0.01%/˚C.

ELECTRICAL AND MECHANICAL

POWER REQUIRED  115 V ac or 230 V ac. Separate internal tap connection for 100 V ac or 200 V ac. AC power <50 VA at 2 kV, 1 mA load.

DIMENSIONS  9.2 X 30.5 X 27.9 cm (3.6 X 12 X 11 in.).

WEIGHT  4 kg (9 lb).

SHIPPING WEIGHT  5 kg (11 lb).

ORDERING INFORMATION