Backends

There are 6 backends which can be individually connected to any receiver.

• The 1_1MHz filter bank, consisting of 512 channels of 1 MHz (can be split into two halves and connected to two different receivers);

• The 2_1MHz filter bank, consisting of 512 channels of 1 MHz (not splittable);

• The 100kHz filter bank, consisting of 256 channels of 100 kHz (splittable into two halves movable inside the 500 MHz instantaneous bandwidth, and connectable to two different receivers)

• The 500 channel AOS: [ currently the AOS is out of operation because of a hardware failure. Waiting for spare parts.]
  Bandwidth 500 MHz; actual spectral resolution 1.5 MHz. Using the AOS with the 3 mm SIS receiver results in higher noise at the band edges, so the combination 3 mm SIS + AOS is not recommended.

• The AUTO autocorrelator: The software treats the autocorrelator as one unit although physically it consists of two identical machines. The following numbers are to be understood for the complete autocorrelator setup. Available resolutions are 10, 20, 40, 80, 320 and 1250 kHz. The bandwidth is between 20 MHz and MHz, depending on resolution. The correlator can be split into 8 independent subbands, each of which can be configured individually and connected to the same or different receivers. For the larger bandwidths (i.e. more than one subband of 80 MHz) a problem of platforming may exist (i.e. baselines from the different subbands have slightly different levels).