ORTEC 672

Spectroscopy amplifier

ORTEC 672 shapes and amplifies detector pulses for energy spectroscopy. Settings are matched to the detector, preamplifier and count rate.

Gain: 2.5–15001
Shaping time constants: 0.5; 1; 2; 3; 6; 10 µs1
Integral nonlinearity: <±0.025 %; 0–+10 V, unipolar; 2 µs Gaussian, AUTO BLR; manual PZ1
Equivalent input noise: <5.0 µV rms at gain >100; <4.5 µV at >1000; 2 µs Gaussian, AUTO BLR; manual PZ1

Download product sheet (PDF)All values with references – for tender documents

Specifications checked against the manufacturer’s documents on 2026-10-16

Manufacturer’s product page (opens in a new tab)

Overview

Nuclear power & nuclear technology Research & laboratories

Key features

Gain: 2.5–1500
Shaping time constants: 0.5; 1; 2; 3; 6; 10 µs
Integral nonlinearity: <±0.025 %; 0–+10 V, unipolar; 2 µs Gaussian, AUTO BLR; manual PZ

Specifications

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

Performance

Integral nonlinearity	<±0.025 %; 0–+10 V, unipolar; 2 µs Gaussian, AUTO BLR; manual PZ1
Equivalent input noise	<5.0 µV rms at gain >100; <4.5 µV at >1000; 2 µs Gaussian, AUTO BLR; manual PZ1

Measuring range

Linear unipolar output	0–+10 V1

Electronics & signal

Gain	2.5–15001
Shaping time constants	0.5; 1; 2; 3; 6; 10 µs1
Input polarity	Positive or negative1
Unipolar pulse shape	Gaussian or triangular1

General

Module format	Double-width NIM1
Pole-zero adjustment	Automatic and manual1

The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.

Documents

PDF672 Spectroscopy AmplifierDatasheet · ORTEC

Sources

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

1
672 Spectroscopy Amplifier
Publisher: ORTEC (AMETEK)Datasheet p. 3, Specifications – Performance; p. 3, Controls and Indicators; p. 3, Performance (incl. note on test conditions); p. 3, Performance … Checked 2026-10-16

ORTEC

ORTEC 276L

Low-power PMT base with preamplifier

PMT compatibility: 10-stage, 14-pin; TRW 3B14 socket (JEDEC B14-38); directly compatible with many integrated NaI-PMT assemblies
Conversion gain: Nominally 5 µV/eV with a 2 × 2 in NaI(Tl) crystal and PMT gain of 10⁶
Weight: 0.65 kg net

14 referenced values

ORTEC

ORTEC 269

PMT base for 14- and 12-stage, 20-pin photomultipliers

PMT compatibility: 14- or 12-stage, 20-pin socket (JEDEC B20-102), including Hamamatsu R1250; Philips XP2020, XP2020Q, XP2040, XP2040Q, XP2041, XP2041Q, XP2212B, XP2230B, XP2233B, XP2262B; EMI 9813K
Weight: 0.63 kg net

6 referenced values