As part of the RF system upgrade some of the demod boards in the lab were modfied. The filter U5 (see the circuit schematic) was replaced. These changes are tabulated below.
Filters installed in the demod boards
Serial number |
Old name of the card |
New name of the card |
Filter installed |
Remarks |
107 |
POY33 |
REFL33 |
SCLF-33+ |
R14=50Ohm |
118 |
AP133, ASDD133 |
REFL55 |
SCLF-65 |
|
114 |
PO199 |
REFL165 |
SCLF-190 |
R14=50Ohm |
120 |
PO133 |
POP110 |
SCLF-135 |
|
123 |
SP133 |
POP55 |
SCLF-65+ |
AT1 removed, R14=50Ohm |
122 |
SP199, REFLDD199 |
AS165 |
SCLF-190 |
|
121 |
SP166, REFL16 |
POP11 |
SCLF-10.7 |
|
116 |
AP199 199 MHz |
POP165 |
SCLF-190 |
|
126 |
AS166 33.3 MHz |
POX11 |
SCLF-10.7 |
|
119 |
POX 33.3 MHz |
POY11 |
SCLF-10.7 |
|
021 |
24.5 MHz (LLO) |
REFL11 |
SCLF-10.7 |
|
020 |
24.5 MHz SCLF-45 |
POP22 |
SCLF-21.4 |
|
022 |
24.5 MHz SCLF-45 |
AS11 with amp |
SCLF-10.7 |
|
029 |
24.5 SCLF-f5 |
AS55 with amp |
SCLF-65 |
|
Next, I and Q phase has to be checked for orthogonality. And noise levels of the cards have to measured.
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