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<td>420, 1500(1200*)</td>

<td>down to 5ms</td>

<td>1024 or 16384</td>

<td>continuum (includes polarization) &amp; spectroscopy (no polarization)</td>

<td>spectro-polarimeter(*)</td>

</tr>

<tr class="row-odd"><td><strong>SARDARA</strong></td>

<td>L</td>

<td>115,230,460,1500</td>

<td>down to 5ms</td>

<td>1024 or 16384</td>

<td>continuum (no polarization) &amp; spectroscopy (no polarization)</td>

<td>spectro-polarimeter(**)</td>

</tr>

<tr class="row-even"><td><strong>DFB3</strong></td>

<td>L,C,K</td>

</tbody>

</table>

<p>(1200*) the actual available bandwidth for SARDARA is 1200 MHz.</p>

<p>(*) at C and K bands, polarization is offered for continuum observations but not for observations in spectral line mode</p>

<p>(**) at L-band, polarization is not offered in spectral line mode. it could be offered for continuum observations but has not been fully tested.</p>

<div class="section" id="total-power">

<h2>Total Power<a class="headerlink" href="#total-power" title="Permalink to this headline">¶</a></h2>

<p>The Total Power backend is a single-band, seven-beam backend for continuum observations. Located just below the dish, this backend is formed by 14 voltage-to-frequency converters that digitize the incoming RF signals. Different IF inputs can be selected from three focal points. Different bandwidths (maximum bandwidth: 0.1 - 2.1 GHz) and attenuation levels can be selected.</p>

<p><strong>in L band:</strong></p>

<p>The full bandwidth for this receiver is 500 MHz (1.3-1.8 GHz). RF filters can be used (XXL4, XXL2 etc.) as well as additional backend filters (115, 230 or 460 MHz).</p>

<p>More detailed information on the SARDARA backend can be found here: <a class="reference external" href="https://www.worldscientific.com/doi/full/10.1142/S2251171718500046">SARDARA</a>.</p>

<p>Note: for this call, only total intensity is offered for spectroscopic observations with SARDARA (no spectro-polarimetry). Instead for continuum observations, polarization is available in C and K-bands (but not L-band).</p>

<p>Note: for this call, only total intensity is offered for observations in spectral line mode with SARDARA. Instead for continuum observations, the spectro-polarimetric observing mode has been tested for C and K bands, but not for L-band.</p>

</div>

</div>

<div class="section" id="calibration">

=============== ======= ================= =============== ===================== ====================================================================== 

**Total Power**   C,K   250,680,1200,2000 1-1000 ms          1                  continuum (analog)

**XARCOS**        C,K   0.5,2.0,7.8,62.5  10s               2048                spectro-polarimeter

**SARDARA**       C,K   420, 1500(1200*)  down to 5ms       1024 or 16384       continuum (includes polarization) & spectroscopy (no polarization)    

**SARDARA**        L    115,230,460,1500  down to 5ms       1024 or 16384       continuum (no polarization) & spectroscopy (no polarization)

**SARDARA**       C,K   420, 1500(1200*)  down to 5ms       1024 or 16384       spectro-polarimeter(*)    

**SARDARA**        L    115,230,460,1500  down to 5ms       1024 or 16384       spectro-polarimeter(**)

**DFB3**         L,C,K  256,512,1024      100 microsec      8192, pulsars: 2048 online pulsar folding + pulsar/transient search 

**ROACH1**      P,L,C,K         128             -             (varies)          baseband recorder + offline pulsar folding + pulsar/transient search

**DBBC**        P,L,C,K         512             -                -              VLBI 

(1200*) the actual available bandwidth for SARDARA is 1200 MHz.

(*) at C and K bands, polarization is offered for continuum observations but not for observations in spectral line mode

(**) at L-band, polarization is not offered in spectral line mode. it could be offered for continuum observations but has not been fully tested.

Total Power 

-----------

More detailed information on the SARDARA backend can be found here: `SARDARA <https://www.worldscientific.com/doi/full/10.1142/S2251171718500046>`_. 

Note: for this call, only total intensity is offered for spectroscopic observations with SARDARA (no spectro-polarimetry). Instead for continuum observations, polarization is available in C and K-bands (but not L-band).

Note: for this call, only total intensity is offered for observations in spectral line mode with SARDARA. Instead for continuum observations, the spectro-polarimetric observing mode has been tested for C and K bands, but not for L-band. 

Calibration

===========