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Simplified Hardware Block<br />
Diagram<br />
This diagram shows the basic flow of signals<br />
within the system.<br />
Start<br />
Diode<br />
ICC Computer<br />
Servo Controller<br />
LRO Laser<br />
<strong>NASA</strong> mJ Laser<br />
<strong>NGSLR</strong> System Block Diagram<br />
Range gate:<br />
SLR 2 kHz<br />
LRO 28 Hz<br />
1 PPS<br />
2 kHz<br />
Fires<br />
Stop Events<br />
28 Hz Fire Time<br />
Adjusted 2 kHz<br />
Fire Time<br />
Returns<br />
Amplifier<br />
Returns<br />
Discriminator<br />
Event Timer<br />
Range Gate Generator<br />
I/O Chassis (HTSI)<br />
2 kHz & 1 PPS<br />
Laser Fire<br />
MCP PMT<br />
(Photek/Hammamatsu)<br />
28 Hz Laser Fire<br />
Window/Window<br />
MCP Window<br />
(Secondary)<br />
Cesium Clock<br />
(Symmetricom 4310)<br />
10 MHz &<br />
1 PPS<br />
2 kHz &<br />
1 PPS<br />
2kHz<br />
1 PPS<br />
Laser Fire<br />
10 MHz<br />
<strong>NGSLR</strong> 8/22/2012 jlfm<br />
OR<br />
10 MHz<br />
Distribution Amplifier<br />
(Symmetricom 6502)<br />
Computer Clock Sync<br />
Interface<br />
VME<br />
Chassis<br />
Dome<br />
Controller<br />
Risley<br />
Prisms<br />
10 MHz<br />
1 PPS Generator<br />
1 PPS<br />
2 kHz &<br />
1 PPS<br />
10 MHz<br />
GPS Time and Freq. Rcvr.<br />
10 MHz &<br />
1 PPS<br />
POP<br />
DAM<br />
(Primary)<br />
Maser<br />
10 MHz<br />
MOBLAS 7<br />
Used for synchronized<br />
LRO tracking<br />
GPS Time<br />
(hh:mm:ss)<br />
Weather<br />
Instruments<br />
MVP<br />
Controllers<br />
14
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