● 1 trigger input channel, 4 outputs
● LEMO 00 connectors for all signals
● Low Pin Count (LPC) FMC connector
● Signal level: TTL, outputs capable of driving a 50 Ohm load, > 2 V/ns slew rate.
● Operating modes: Pulse delay – on trigger, generates a pulse or series of pulses of given width and repetition rate on chosen outputs after a certain time programmed by the user. Single channel TDC – time tags incoming trigger pulses available via a circular buffer. Pulse generator – produces a pulse or a series of pulses of arbitrary length and repetition rate starting at a given UTC/TAI time.
● Min. input pulse width 100 ns. Pulses below 24 ns are ignored.
● Max. input pulse rate 1 MHz (minimum pulse spacing: 1 μs).
● Output pulse width 250 ns – 1 s (10 ps resolution), 50ns – 1 s (pulse generation mode only, 4 ns resolution).
● Output pulse spacing 250 ns – 1 s (10 ps resolution), 50ns – 1 s (pulse generation mode only, 4 ns resolution).
● Trigger to output delay 600 ns (min) to 120 seconds (max). Independent setting for each channel.
● Output pulse repeat count (train generation) 1 – 65536 pulses or infinity (continuous mode).
● Timebase accuracy ±2.5 ppm. The timebase from a local TCXO on FMC card needs calibration. The 2.5 ppm accuracy is the one of the on- board TCXO. Cesium-quality accuracy will be reached when used on a White Rabbit enabled FMC carrier.
● TDC resolution 28 ps, 55ps TDC precision (std. dev)
● Delay accuracy: baseline: < 300 ps average, < 1 ns peak-to-peak (minimum delay setting of 600 ns). Accuracy is as good as the time base, e.g. for a delay of 1 s using internal time base, the worst case error will be (2.5 ppm x 1 s) = 2.5 us. The accuracy can be greatly improved by locking the card to GPS/Cesium clock source through White Rabbit.
● 1024-entries circular buffer with time tags for in- put/output pulses. Buffer interrupt (with time-out/threshold coalescing).
● Power consumption 7 Watt (200 mA from 12V, 1.5 A from 3.3V).

http://www.ohwr.org/projects/fmc-delay-1ns-8cha/wiki

Name: CREOTECH Instruments S.A.
Adress: ul. Gen. L. Okulickiego 7/9, 05-500 Piaseczno, Poland
E-mail: support@creotech.pl
Web: http://www.creotech.pl
Phone: +48 22 233 10 27