Table of contents
- 1. Summary
- 2. Setup
- 2.1.1. VLBA
- 2.1.2. DBBC2 stations (Pv, On, Ys, Mh, Ef)
- 2.1.3. DBBC3 stations (Pico Veleta P3)
- 2.1.4. R2DBE stations (NOEMA)
Summary
Prior to the regular fringe test of session c191 a test for recording at 4 Gbps will be executed
Participating stations: VLBA, Pv, On, Ys, Mh, Ef, Noema
Sky frequency band: 86012 - 86524 MHz (512 MHz)
Setup
VLBA
RDBE DDC mode with 4x128 MHz bands, dual-pol
sky freq start | sky freq stop | bandwidth | Sideband |
---|---|---|---|
86012 | 86140 | 128 | USB |
86140 | 86268 | 128 | USB |
86268 | 86396 | 128 | USB |
86396 | 86524 | 128 | USB |
DBBC2 stations (Pv, On, Ys, Mh, Ef)
All DBBC2 stations should use:
- DDC mode (firmware 107 beta3)
- 8x64 MHz bands, dual-pol.
- IF setup: identical to standard GMVA 2Gbps mode using 2 core boards
- Use 2nd Nyquist zone: 512 -1024 MHz
- dbbcform=astro
bbc freq | sideband | bandwidth | ||
---|---|---|---|---|
576 | LSB | 86524 | 86460 | 64 |
USB | 86460 | 86396 | 64 | |
704 | LSB | 86396 | 86332 | 64 |
USB | 86332 | 86268 | 64 | |
832 | LSB | 86268 | 86204 | 64 |
USB | 86204 | 86140 | 64 | |
960 | LSB | 86140 | 86076 | 64 |
USB | 86076 | 86012 | 64 |
DBBC3 stations (Pico Veleta P3)
Pico Veleta will do simultaneous processing on the DBBC2 and DBBC3 backends.
- DDC_V mode (firmware V124)
- 16x32 MHz bands, dual-pol.
- 4-8 GHz input IFs
- Use GComo Downconversion (freq = ???)
bbc freq | ||||
---|---|---|---|---|
R2DBE stations (NOEMA)
Will use EHT mode: 1 x 2048 MHz dual-pol
sky freq start | sky freq start | bandwidth | sideband |
---|---|---|---|
TBD | TBD | 2048 | TBD |