Backends

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

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

• The second 1MHz filter bank, consisting of 512 channels of 1 MHz (not splittable). The two 1 MHz filterbanks can be combined into a 1 GHz wide filterbank and connected to 230G2. This, however, exclude the use of any other backend with 230G2 at the same time.

• 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: ( Under repair)
  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 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).