EG&G / Ortec / Ametek

Der Ortec 934 NIM/CAMAC Vierfach Constant-Fraction Diskriminator (auch CFD oder Proportional-Diskriminator genannt) wird zusammen mit Detektoren wie z.B. Plastikszintillationszählern betrieben.

Da wir keine Prüfmöglichkeiten besitzen bieten wir das Gerät "ap Stapel" an.

Technische Details entnehmen Sie bitte der englischen Beschreibung oder dem Datenblatt.
Eine vergrößerte Abbildung befindet sich hier.

English translation of German description:
The Ortec 934 100 MHz Quad Constant-Fraction Discriminator (CFD) is a single-width NIM module that includes four independent fast constant-fraction discriminators. Each section of this instrument accepts negative input pulses and generates three simultaneous NIM-standard fast negative logic pulses for each input pulse that exceeds the adjusted threshold level.
The constant-fraction technique permits optimum timing measurements to be made with photomultiplier tubes or fast solid-state detectors. Each input signal is split so that a portion of the signal is delayed and subtracted from a fraction of the undelayed signal. The resulting bipolar constant-fraction signal has a baseline crossover that is virtually independent of the input signal amplitude. The zero crossing point is detected and used to provide precisely timed logic pulses for a wide dynamic range of input signals. Each of the four channels includes an independently adjustable threshold level to prevent output signals from being generated in response to noise or small-amplitude input signals. The input circuit has an impedance of 50 Ohms and is protected against overload. The shaping delay can be optimized for each specific application. A common gating circuit can be used to control responses in all four channels simultaneously.
  • Four completely independent channels
  • Input/Output rate >100 MHz
  • Resolution <10 ns
  • 20-turn front panel screwdriver adjustment for each discriminator channel; variable from -30 mV to -1000 mV
  • Front panel test point to monitor discriminator threshold setting: -0.3 V to -10 V
  • 20-turn screwdriver front panel walk adjustment
  • Monitoring of walk adjustment: -0.5 mV to -1.5 mV
  • Updating width: 20-turn front panel screwdriver adjustment from 6 to 150 ns
  • Shaping delay: approx. 0.7 ns (plus delay of external cable)
  • Input: Front panel LEMO connectors for each discriminator channel. Linear range from 0 to -10 V. Impedance: 50 Ohms, DC coupled
  • Outputs: three independent bridged, updated negative outputs. Amplitude -800 mV nom. (into 50 Ohms); width adjustable from 6 ns to 150 ns; rise and fall times typically <2 ns

As we have no means for testing, we offer this part "as is".
Please find an enlarged image here.

EG&G / Ortec / Ametek 934

Maße/ Dimensions : 35mm (B/W) x 220mm (H/H) x 280mm (T/D)
Gewicht/ Weight: 1 kg

Ab Stapel / As is:   232,05 INKLUSIV MWST / 195,00 NETTO (appr. US$ .-)

Ref. #: 1478703526 EG&G / Ortec / Ametek 934
© by Helmut Singer Elektronik Vertriebs GmbH