Possible ACS configurations for High-speed Samplers

Allowed Combinations
IFs one beam two beams four beams
1 yes yes yes
2 yes yes no
4 yes no no

Assuming always dual-polarizations.
The primary sampler selection is given; in many cases alternate samplers are possible.
ACS mode as function of IF/Beam selection.
NIFS Beams NSamp ACS Modes BandWidth Samplers ACS Channels
1 B1 2 A1
A2
A4
A1
A1_B1
A2_B2
200
200
200
800
800
800
01
01
01
01
0_1
0_1
8192
16384
32768
2048
4096
8192
1 B2 2 same as for B1
1 B3 2 same as for B1
1 B4 2 same as for B1
1 B12 4 A1
A1_B1
A2_B2
A1_B1
A1_B1_C1_D1
200
200
200
800
800
0123
01_23
01_23
01_23
0_1_2_3
4096
8192
16384
2048
4096
1 B34 4 same as for B12
1 B1234 8 A1_B1
A1_B1_C1_D1
A1_B1_C1_D1
200
200
800
0123_4567
01_23_45_67
01_23_45_67
4096
8192
2048
2 B1 4 A1
A1_B1
A2_B2
A1_B1
A1_B1_C1_D1
200
200
200
800
800
0123
01_23
01_23
01_23
0_1_2_3
4096
8192
16384
2048
4096
2 B2 4 Same as 2 IFs, B1
2 B3 4 Same as 2 IFs, B1
2 B4 4 Same as 2 IFs, B1
2 B12 8 A1_B1
A1_B1_C1_D1
A1_B1_C1_D1
200
200
800
0123_4567
01_23_45_67
01_23_45_67
4096
8192
2048
2 B34 8 Same as 2 IFs, B12
4 B1 8 A1_B1
A1_B1_C1_D1
A1_B1_C1_D1
200
200
800
0123_4567
01_23_45_67
01_23_45_67
4096
8192
2048
4 B2 8 same as 4 IFs, B1
4 B3 8 same as 4 IFs, B1
4 B4 8 same as 4 IFs, B1

Note:

  • B1 can be any single-feed receiver which uses IF Rack inputs S1,S3.
  • B2 can be any single-feed receiver which uses IF Rack inputs S5,S7.
  • B3 can be any single-feed receiver which uses IF Rack inputs S2,S4.
  • B4 can be any single-feed receiver which uses IF Rack inputs S6,S8.