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5500A
Service Manual
DDS
External
Clock In
6-74
50Ω
Time Mark II
LF Mux.
Analog Shaped
2 µs - 10 µs
Time Mark III
Pulse Shaped
20 µs - 1 µs
Leveled Sine Wave
and Time Mark IV
Unleveled
Leveled
PLLs
Pwr Amp.
Leveling Loop
Edge
Level
10 MHz Clock
Figure 6-18. SC300 Block Diagram
LF PWB
Trigger
÷1,10,100,1000
HF PWB
Step Attenuator Module
HF Mux.
8dB,20dB,20dB
pp detect
HF Mux.
Oscilloscope
Calibrator
Trigger BNC
SCOPE
Output BNC
om053f.eps
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