BLS-to-ADF Transition System
34
L1 Meeting 11/4/2004 – Mario Camuyrano BLS-to-ADF Transition System 230 ns 100 mV/div 200 ns/div Existing and proposed calorimeter trigger rack layouts. The color code shows how the calorimeter trigger inputs will be reassigned from the existing trigger crates to the new ADF crates.
description
BLS-to-ADF Transition System. Existing and proposed calorimeter trigger rack layouts. The color code shows how the calorimeter trigger inputs will be reassigned from the existing trigger crates to the new ADF crates. 100 mV/div 200 ns/div. 230 ns. Patch Panel. - PowerPoint PPT Presentation
Transcript of BLS-to-ADF Transition System
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BLS-to-ADF Transition System
230 ns
100 mV/div200 ns/div
Existing and proposed calorimeter trigger rack layouts. The color code
shows how the calorimeter trigger
inputs will be reassigned from the existing trigger crates to the new ADF
crates.
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Patch Panel
Design made by John Foglesong
Paddle Card 2 Pleated Foil Cables input from the Patch Panel Card
ERNI connector output to the ADF backplane
Patch Panel Card (2 per Patch Panel)16 BLS inputs
2 Pleated Foil Cables output to the Paddle Card)
3M Pleated Foil Cables
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Current BLS Cables Layout
• How the BLS cables are set.
6.5‘‘
RackDoor
We decided to do not move the cables
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PPC layout Design
• Patch Panel Card shift 4’’ out to the rack to keep the cables coming from the front.
Front
Rack
PFC
BLS
Side viewFront view
by John Foglesong
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BLS Cables layout
We are looked for the best Patch Panel
location considering we need enough space to feet the ADF crates on
racks M104 M106 M109 M111 and also TAB/GAB on crate
M107 and Control on rack M108. We
estimate around 17U
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Mock-up
We reproduce the current BLS cable
layout for 128 BLS cables to test the
design and to optimize the procedure
to connect the cables
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Mock-up
32 BLS cables rearrangedFor the bottom Patch Panel Crate.
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Signal and Impedance Matching Tests
A pulse was sent trough a BLS spare cable +Patch Panel Card + Pleated Foil Cable+ Paddle Card.
BLS Cable Zo ~ 80 Ω3M Pleated Foil Cable Zo ~ 72 ΩR1 = 120.5 +/- 0.3 Ω R2 = 0R3 = 72.0 +/- 0.3 Ω
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Signal test
3M PFC
Patch Panel Card + Paddle Card
R2
R2
Today R2 = 0
R3 = 500 Ohm
Pick-Off pins
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Signal Test
Connections:
BLS Cable, Patch Panel Card,
Pleated Foil Cable, Paddle Card
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Signal Test
• Connections:
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Signal Test
Input of the BLS cables bare signal
Input
694 +/- 2 mV
50.0 ns
2.0 µs
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Signal Test
BLS Cable:
Signal
BLS CableR1 R2
R1 = 112.9 +/- 0.3 ΩR2 = 76.6 +/- 0.3 Ω
To match the signal generator 50 Ω then BLS DC Resistance ~ 13 Ω
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Signal TestR1 = 107.5 +/- 0.3 Ω R2 = 7.4 +/- 0.3 Ω
R3 = 106 +/- 1 Ω R3 = 51 +/- 1 Ω R3 = 71.0 +/- 0.3 Ω
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Signal TestR1 = 119.8 +/- 0.3 Ω
R3 = 71.5 +/- 0.3 Ω
R2 = 0 Ω
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Signal Test
R2 = 0 Attenuation:Amplitud ratio
0.0000.100
0.2000.300
0.4000.500
0.6000.700
0.8000.900
1.000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
MHz
V o
utp
ut
/ V
i i
np
ut
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Signal Test
R2 = 0 Attenuation:Attenuation
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz}
[dB
]
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Signal Test
R2 = 0Phase between input and output signals
0.00
5.00
10.00
15.00
20.00
25.00
30.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
Phase [degrees] delay [ns]
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Signal Test
R2 = 0
Amplitude of the signals
0
100200
300
400500
600
700800
900
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
Vo
ltag
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V]
Input BLS output Patch Panel output
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Signal Test
R2 = 0Amplitude ratio - Output/Input of the BLS cable
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
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Signal Test
R1 = 110.3 +/- 0.3 Ω
R3 = 71.1 +/- 0.3 Ω
R2 = 5.0 +/- 0.3 Ω
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Signal Test
R2 = 5.0 +/- 0.3 Ω Attenuation
Amplitud ratio
0.0000.100
0.2000.300
0.4000.500
0.6000.700
0.8000.900
1.000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
MHz
V o
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/ V
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Signal Test
R2 = 5.0 +/- 0.3 Ω Attenuation
Attenuation
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz}
[dB
]
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Signal Test
R2 = 5.0 +/- 0.3 Ω
Phase between input and output signals
0.00
5.00
10.00
15.00
20.00
25.00
30.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
Phase [degrees] delay [ns]
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Signal Test
R2 = 5.0 +/- 0.3 Ω
Amplitude of the signals
0
100200
300
400500
600
700800
900
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
Vo
ltag
e [m
V]
Input BLS output Patch Panel output
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Signal Test
R2 = 5.0 +/- 0.3 ΩAmplitude ratio - Input/Output of the BLS cable
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
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Signal Test
R1 = 107.5 +/- 0.3 Ω R2 = 7.4 +/- 0.3 Ω
R2 = 7.4 +/- 0.3 Ω
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Signal Test
R2 = 7.4 +/- 0.3 Ω Attenuation
Amplitud ratio
0.0000.100
0.2000.300
0.4000.500
0.6000.700
0.8000.900
1.000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
MHz
V o
utp
ut
/ V
i i
np
ut
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Signal Test
R2 = 7.4 +/- 0.3 Ω Attenuation
Attenuation
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz}
[dB
]
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Signal Test
R2 = 7.4 +/- 0.3 Ω
Phase between input and output signals
0.00
5.00
10.00
15.00
20.00
25.00
30.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
Phase [degrees] delay [ns]
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Signal Test
R2 = 7.4 +/- 0.3 Ω
Amplitude of the signals
0
100200
300
400500
600
700800
900
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
Vo
ltag
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Input BLS output Patch Panel output
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Signal Test
R2 = 7.4 +/- 0.3 Ω Amplitude ratio - Output/Input of the BLS cable
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Frequency [MHz]
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Summary
•Mock-up•The cable flow worked.
•A procedure to handle the cables is being writing down.
•Signal integrity coming out of the Patch Panel•There is a small difference on the impedance of the Pleated Foil Cable and the BLS Cable (order of magnitude 10 Ω)
•If we add a resistance of this value in the Patch Panel the output decrease ~10% but it gets a little bit “cleaner”.
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