Table of contents
- 1. 2011 June 30
- 1.1.1.1.1. 1) Re-connect pulled RCUs:
- 1.1.1.1.2. 2) Checked RCUs
2011 June 30
A. Horneffer and K.Schlich did the following:
1) Re-connect pulled RCUs:
30: -> 10638002094
31: -> 10638002062
64: -> 10638002001
65: -> 10638001026
178: -> 10638001092
179: -> 10638002005
2) Checked RCUs
The spectra from channels 30, 31, 178 and 179 look O.K.
The HBA-led of RCU 64 is always "half-lit". The in rcumode 5 and 7 the channels 64 and 65 show only the receiver noise. In rcumode 3 the two channels show mostly a normal spectrum, except that channel 64 has a higher noise-floor. Exchanging the RCU module does not change that behavior. Measuring the output voltage (the antenna power supply) gives:
rcumode 5 | rcumode 3 | |||
---|---|---|---|---|
HBA | LBH | HBA | LBH | |
RCU 64 | 2.9 V | 0.01 V | 2.9 V | 7.8 V |
RCU 70 | 48.1 V | 0.06 V | 0.0 V | 7.8 V |