HP 8560A

J501 SAMPLER
Al5 -15 TO OdBm
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a
/P/O Al4 FREQUENCY CONTROL 1
1
YTO LOOP
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YTO LOOP
ERROR TO
w
FM COIL
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DRIVER
1 56 MHz/V I
TUNE DAC
VCO RAMP FROM
VCO SWEEP DRIVER
MAIN ROLLER
SWEEP/HOLD
J304
ROLLER
TEST
'-25 d&r
MAIN PLL
MAIN MIXER
XFER OSC
TP301
-4 dBn
TP304
TTL
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1
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A14J301
10 MHz
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REFl FROM ;
Al5 0 dBm I
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t
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SK1112
Figure 10-12. Simplified Al4 Assembly Block Diagram
lo-50 Synthesizer Section