Table of contents
- 1. 2012 October 15 -- October 17: Maintenance Visit
- 1.1.1.1. Updates etc. in the Container:
- 1.1.1.2. LBA work:
- 1.1.1.3. HBA work:
- 1.1.1.4. Tests
2012 October 15 -- October 17: Maintenance Visit
Menno Norden and Henri Meulman visited from ASTRON to work on the station
Updates etc. in the Container:
- RCU modem firmware upgrade to version V12. This removes the DC from the communication line when it is not used.
- Upgrade of the firmware of the TBB boot-loader. This is to improve the stability of the boards. (Less TBBs stuck in "not available" and needing a 24V reset.)
- RCU number 10 replaced, it had low gain in LBH
LBA work:
- replaced the antennas number: 4, 6, 19, 22, 27, 34, 35, 36, 37, 38, 39, 41, 43, 46, 52, 65, 69, 74, 75, 76, 82, 89, 92 (to get the RCU number multiply by two)
- LBA 19 has one broken cable.
HBA work:
- Replaced HBA frontend boards (tile-number - FE-number): 19 - 15, 20 - 7, 20 - 11, 34 - 7, 52 - 15, 53 - 14, 71 - 9, 89 - 16
Tests
- Tested all antenneas and elements with a test transmitter.
- Polarization tests of the HBA did not work, there is not enough space to put the test transmitter at the right distance in the right direction.
