FAST ComTec: P7882

By: Fast Comtec  09-12-2011
Keywords: Sweep, Graphical User Interface, Graphical User

The P7882 is an advanced dual-input Multiscaler / TOF / Photon Counter designed for fast sweep repetition rates and counting rates in excess of 350 MHz (400 MHz typical). The minimum dwell time (time-bin width) is 100 ns, two inputs accept counting rates of >350 MHz each. Both inputs and the START input are equipped with computer adjustable discriminators.

A special design prevents lost counts and double counting of input pulses.

The very large data memory has a 32 bit storage capacity and can be segmented to enable to accumulate successive measurements.

Spectra can be displayed in a two-dimensional array. This can be used to display successive sweeps to make - for example regression studies where even small changes are very visible.

Sweeps can be summed for realtime signal averaging - this means that as a new sweep is acquired it will be added to the sum of previous sweeps.

For the use in remote places an autostore function can be selected that will store spectra and setup parameters at selectable intervalls.

The P7882 can be fully remote controlled by a host computer. "GO"-line compatibility enables the P7882 to start and stop accumulation synchronously with other FAST ComTec products like the MS-12 Timer/Scaler, the Multi Paramer System etc.

Extensive Operating Software is based on the MCDWIN software - a proven - easy to use graphical user interface for mouse and keyboard operation. High resolution display with linear and log scales, autoscaling, ROI, zoom, Gaussian-Fit, FWHM calculation are just a few features MCDWIN offers. Batch processing with MACRO's is a flexible way to allow the user to execute task oriented batch programs.

The interactive display software can be set to display spectra with a high resolution, linear- or log scale. Screen dumps allow text insertion and graphic editing with a variety of tools. This package also supports all graphic output devices installed under WINDOWS 2000 and XP.

A unique feature of the P7882 is the selectable autostore facility. In case of a power failure theP7882 will lose just the last minute of data. As all setup parameters are stored as well, a measurement can be continued as soon as power has returned.

Dwell Time Modes: programmable internal-, external- and manual channel advance
Dwell Time per channel: 100 ns (200 ns for two inputs) to 50 s, progr. in steps of 25 ns, and external
Countrate: 350 MHz, typically >400 MHz
Deadtime between time bins: zero
Bin accuracy (leading/trailing edge) rel. to the Reference Clock +/-0.15ns, typical +/-0.07ns
End-of-sweep deadtime: zero
Trigger Delay: 25ns +/-12.5ns
Abort: ends the sweep at the end of the actual time bin
Trigger / Start uncertainty: < 25 ns
Sweep Preset Range: 1 to 232


START/TRIGGER: +/-5V range, 50 W/1 kW slope and threshold programmable in steps of 2.44mV,
+/-5V, 50 W/1 kW , falling edge sensitive, threshold programmable in steps of 2.44 mV, count rate capability 350 MHz, typically >400 MHz
50 kW, rising edge sensitive

Start/Trigger: LEMO 00 type connector
Count1, Count2: LEMO 00 type connector
Clock/Abort: LEMO 00 type connector
Sync-Out: LEMO 00 type connector

Analog Ground
Digital Ground
DAC OUT: 0..10V
DIG I/O: 8-bit, very versatile

Power Requirements:
+5V / 1400mA / 7W typ. (1600mA / 8W max.)

Keywords: Graphical User, Graphical User Interface, Sweep,

Other products and services from Fast Comtec


FAST ComTec: P7889

Pulse-width evaluation with 100 ps precision enables the user to calculate the area, the pulse height of the detector pulse but also if multiple events have occured - multiple events have a broader pulse width than single pulses. Then subsequent events detected at the stop inputs are recorded, each in a specific time bin corresponding to the time of arrival relative to the start pulse.


FAST ComTec: P7887

Then subsequent events detected at the stop inputs are recorded, each in a specific time bin corresponding to the time of arrival relative to the start pulse. The P7887 has been optimized for the best possible pulse-pair resolving while providing state-of-the-art time resolution available in digital designs.



Selection of data width per event in steps of 16bit allows for optimized FIFO and USB bandwidth usage For experiments requiring repetitive sweeps the spectral data obtained from each sweep can be summed in the PC enabling very high sweep repetition rates.


Ultra Fast Multiscalers / TOF

In Mass Spectrometry stop event pulses generated by ions arriving at the detector need to be precisely counted in the exact relation to their arrival time. The models, Series, and are one of the fastest commercially available fully digital multistop time digitizers with up to four inputs. FAST ComTec has specialised in the design and manufacturing of instruments for ultra-fast pulse counting that meets this criterion.



Coincidence data may contain the time of the event with 6.4 ns resolution, the sweep counter and counter data of up to three scalers, and two signal bits from auxiliary inputs. Three auxiliary inputs/outputs are available, either as inputs to start a coincidence time window or mark events, or as outputs to monitor selected signals.


FAST ComTec: P7888

MCDWIN - the MS-WINDOWS-98/NT/2000 based operating software - provides a powerful graphical user interface for setup, data transfer and spectral data display.A DLL with example programs for "C", Visual Basic and LabVIEW is available for operation in a Laboratory Automation environment.