... | @@ -27,21 +27,17 @@ time-to-digital converter IC from the European company |
... | @@ -27,21 +27,17 @@ time-to-digital converter IC from the European company |
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|Signal connectors|LEMO 00 for all signals|
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|Signal connectors|LEMO 00 for all signals|
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|FMC connector|Low Pin Count (LPC)|
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|FMC connector|Low Pin Count (LPC)|
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|Signal level|TTL, outputs capable of driving a 50 Ohm load, > 2 V/ns slew rate|
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|Signal level|TTL, outputs capable of driving a 50 Ohm load, > 2 V/ns slew rate|
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|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.
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|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.<br/>**Single channel TDC**: time tags incoming trigger pulses available via a circular buffer.<br/>**Pulse generator**: produces a pulse or a series of pulses of arbitrary length and repetition rate starting at a given UTC/TAI time.|
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**Single channel TDC**: time tags incoming trigger pulses available via a circular buffer.
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**Pulse generator**: produces a pulse or a series of pulses of arbitrary length and repetition rate starting at a given UTC/TAI time.|
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|Minimum input pulse width|100 ns. Pulses below 24 ns are ignored.|
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|Minimum input pulse width|100 ns. Pulses below 24 ns are ignored.|
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|Maximum input pulse rate|1 MHz (minimum pulse spacing: 1 us)|
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|Maximum input pulse rate|1 MHz (minimum pulse spacing: 1 us)|
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|Output pulse width|250 ns - 1 s (10 ps resolution), 50ns - 1 s (pulse generation mode only, 4 ns resolution)|
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|Output pulse width|250 ns - 1 s (10 ps resolution), 50ns - 1 s (pulse generation mode only, 4 ns resolution)|
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|Output pulse spacing|250 ns - 1 s (10 ps resolution), 50ns - 1 s (pulse generation mode only, 4 ns resolution)|
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|Output pulse spacing|250 ns - 1 s (10 ps resolution), 50ns - 1 s (pulse generation mode only, 4 ns resolution)|
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|Trigger to output delay|600 ns (min) to 120 seconds (max). Independent setting for each channel.|
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|Trigger to output delay|600 ns (min) to 120 seconds (max). Independent setting for each channel.|
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|Output pulse repeat count (train generation)|1 - 65536 pulses or infinity (continuous mode)|
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|Output pulse repeat count (train generation)|1 - 65536 pulses or infinity (continuous mode)|
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|Timebase accuracy|± 2.5 ppm
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|Timebase accuracy|± 2.5 ppm<br/>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](https://www.ohwr.org/project/white-rabbit/wiki) enabled FMC carrier.|
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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](https://www.ohwr.org/project/white-rabbit/wiki) enabled FMC carrier.|
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|TDC Resolution|28 ps|
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|TDC Resolution|28 ps|
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|TDC Precision (std. dev)|55 ps|
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|TDC Precision (std. dev)|55 ps|
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|Delay accuracy|Baseline: < 300 ps average, < 1 ns peak-to-peak (minimum delay setting of 600 ns).
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|Delay accuracy|Baseline: < 300 ps average, < 1 ns peak-to-peak (minimum delay setting of 600 ns).<br/>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](https://www.ohwr.org/project/white-rabbit/wikis/).|
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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](https://www.ohwr.org/project/white-rabbit/wikis/).|
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|Time tag buffer|1024-entries circular buffer with time tags for input/output pulses. Buffer interrupt (with timeout/threshold coalescing)|
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|Time tag buffer|1024-entries circular buffer with time tags for input/output pulses. Buffer interrupt (with timeout/threshold coalescing)|
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|Power consumption|7 Watt (200 mA from 12V, 1.5 A from 3V3)|
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|Power consumption|7 Watt (200 mA from 12V, 1.5 A from 3V3)|
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... | @@ -155,10 +151,11 @@ Accuracy is as good as the time base, e.g. for a delay of 1 s using internal tim |
... | @@ -155,10 +151,11 @@ Accuracy is as good as the time base, e.g. for a delay of 1 s using internal tim |
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|18-12-2014|Gateware v.2.1 released.|
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|18-12-2014|Gateware v.2.1 released.|
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|19-01-2015|[V6-1](https://edms.cern.ch/nav/EDA-02267-V6-1) hardware design released.|
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|19-01-2015|[V6-1](https://edms.cern.ch/nav/EDA-02267-V6-1) hardware design released.|
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|02-08-2018|Order placed for 120 [V6-1](https://edms.cern.ch/nav/EDA-02267-V6-1) cards placed.|
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|02-08-2018|Order placed for 120 [V6-1](https://edms.cern.ch/nav/EDA-02267-V6-1) cards placed.|
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|05-02-2019|Order of 120 cards delivered.|
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Tomasz Wlostowski, Erik van der Bij - 26 September 2018
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Tomasz Wlostowski, Erik van der Bij - 13 January 2020
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