Ludlum Model 500

Pulse generator

Pulse generator for scaler and ratemeter calibration, with selectable polarity and measurement of the connected instrument’s high voltage.

Weight: 4.1 kg1

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 Environmental monitoring & radiation protection

Key features

Coarse and fine pulse-rate adjustment.
Adjustable pulse amplitude.
C-type output; cable included.

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

Pulse rate accuracy	Within 2% of reading1
Pulse amplitude accuracy	Within 10% of true value1

Measuring range

Pulse rate range	1–9,900,000 cpm1
External high-voltage measurement range	0–2.5 kV2

Electronics & signal

Pulse amplitude	0–5 V, selectable positive/negative polarity1
Typical negative pulse duration	7.0 µs2
Positive pulse duration	<2.25 µs1

Connectivity & interface

External high-voltage display	Analog1
Pulse amplitude display	Analog1

Mechanical

Dimensions (H × W × D)	21.6 × 29.2 × 24.1 cm1
Weight	4.1 kg1

Ordering & accessories

Part number	48-16771

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

Documents

PDFModel 500 Pulse Generator with Analog & Digital DisplaysDatasheet · Ludlum

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
Model 500 Pulse Generator with Analog & Digital Displays
Publisher: Ludlum MeasurementsDatasheet p. 1, Specifications; p. 1, Specifications (PULSE RATE); p. 1, Specifications (PULSE AMPLITUDE); p. 1, Specifications (PULSE POLARITY) … Checked 2026-10-16
2
Model 500 Pulse Generator
Publisher: Ludlum MeasurementsProduct page Specifications tab (High Voltage); Specifications tab (Pulse Polarity) Checked 2026-10-16