... | @@ -65,27 +65,31 @@ delay-v5-small.JPG |
... | @@ -65,27 +65,31 @@ delay-v5-small.JPG |
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<td>100 ns - 1 s (10 ps resolution)</td>
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<td>100 ns - 1 s (10 ps resolution)</td>
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</tr>
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</tr>
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<tr class="odd">
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<tr class="odd">
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<td>Trigger to output delay</td>
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<td>500 ns (min) to 120 seconds (max). Independent setting for each channel.</td>
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</tr>
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<tr class="even">
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<td>Output pulse repeat count (train generation)</td>
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<td>Output pulse repeat count (train generation)</td>
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<td>1 - 65536 pulses or infinity (continuous mode)</td>
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<td>1 - 65536 pulses or infinity (continuous mode)</td>
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</tr>
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</tr>
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<tr class="even">
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<tr class="odd">
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<td>Timebase accuracy</td>
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<td>Timebase accuracy</td>
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<td>± 4ppm<br />
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<td>± 4ppm<br />
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The timebase from a local TCXO on FMC card needs calibration. The 4ppm accuracy is the one of the on-board TCXO. Cesium-quality accuracy will be reached when used on a <a href="https://www.ohwr.org/project/white-rabbit/wikis/Description">White Rabbit</a> enabled FMC carrier.</td>
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The timebase from a local TCXO on FMC card needs calibration. The 4ppm accuracy is the one of the on-board TCXO. Cesium-quality accuracy will be reached when used on a <a href="https://www.ohwr.org/project/white-rabbit/wikis/Description">White Rabbit</a> enabled FMC carrier.</td>
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</tr>
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</tr>
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<tr class="odd">
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<tr class="even">
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<td>TDC Resolution</td>
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<td>TDC Resolution</td>
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<td>28 ps</td>
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<td>28 ps</td>
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</tr>
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</tr>
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<tr class="even">
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<tr class="odd">
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<td>TDC Precision (std. dev)</td>
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<td>TDC Precision (std. dev)</td>
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<td>55 ps</td>
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<td>55 ps</td>
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</tr>
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</tr>
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<tr class="odd">
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<tr class="even">
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<td>Delay accuracy</td>
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<td>Delay accuracy</td>
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<td>< 1 ns</td>
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<td>< 1 ns</td>
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</tr>
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</tr>
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<tr class="even">
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<tr class="odd">
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<td>Time tag buffer</td>
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<td>Time tag buffer</td>
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<td>1024-entries circular buffer with time tags for input/output pulses. Buffer interrupt (with timeout/threshold coalescing)</td>
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<td>1024-entries circular buffer with time tags for input/output pulses. Buffer interrupt (with timeout/threshold coalescing)</td>
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</tr>
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</tr>
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... | @@ -322,10 +326,14 @@ The timebase from a local TCXO on FMC card needs calibration. The 4ppm accuracy |
... | @@ -322,10 +326,14 @@ The timebase from a local TCXO on FMC card needs calibration. The 4ppm accuracy |
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<td>06-02-2013</td>
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<td>06-02-2013</td>
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<td>Change of spec: Maximum input pulse rate lowered to 1 MHz and minimum pulse spacing increased to 1 us.</td>
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<td>Change of spec: Maximum input pulse rate lowered to 1 MHz and minimum pulse spacing increased to 1 us.</td>
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</tr>
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</tr>
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<tr class="even">
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<td>18-06-2013</td>
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<td>V5-1 of design published. Improves jitter ([740](https://www.ohwr.org/project/fmc-delay-1ns-8cha/issues/14)).</td>
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</tr>
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</tbody>
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</tbody>
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</table>
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</table>
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-----
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-----
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Erik van der Bij - 22 February 2013
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Erik van der Bij - 18 June 2013
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