Bild: ORTEC
Constant-fraction discriminator
Timing discriminator for semiconductor and scintillation detectors, with constant-fraction, leading-edge and slow-rise-time rejection modes.
Download product sheet (PDF)All values with references – for tender documents
Specifications checked against the manufacturer’s documents on 2026-10-16
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.
| Input amplitude range | 0…−5 V1 |
|---|---|
| Threshold range | −5 mV…−1 V1 |
| Input impedance | 50 Ω1 |
| Minimum pulse-pair resolution | ≤20 ns1 |
| Blocking output width | Adjustable from ≤10 to ≥1000 ns1 |
| Nominal constant fraction | 0.2 (internally set; can be changed on request)1 |
| Nominal propagation delay | 25 ns with approximately 2 ns external CF delay1 |
| Time walk | ≤±100 ps, −20 mV…−2 V; 2 ns external CF delay, ≤1 ns rise time, 10 ns width1 |
The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.
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.
Low-power PMT base with preamplifier
PMT base for 14- and 12-stage, 20-pin photomultipliers
PMT base for 10-stage, 14-pin photomultipliers
PMT base for 12-stage, 21-pin photomultipliers, for fast timing
We help you choose the right configuration, detector and accessories for your measurement task.
ORTEC (AMETEK)