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RF Section
A14 Frequency Control Assembly
A14 Frequency Control Assembly
The block diagrams for the A14 and A15 assemblies are located in
NOTE
Chapter 11 , "Synthesizer Section."
LO Multiplier/Amplifier Drive
Refer to function block Z on the A14 Frequency Control Schematic
Diagram in the 8560 E-Series Spectrum Analyzer Component Level
Information.
1. Set the spectrum analyzer to the following settings:
2. On the spectrum analyzer, press
3. If the output power is low, the output voltage of A14U602B at
The voltages on A14J18 pins 5, 13, and 14 are referred to as LOMA PIN
NOTE
DRV T, RYTHM/LB SENSE, and LOMA INPUT PIN ATTEN
respectively.
4. Set the spectrum analyzer to the following settings:
5. On the spectrum analyzer, press
6. If the output power is low, the output voltage of A14U602D at
The voltages on A14J10 pin 21 and A14J15 pin 5 are referred to as
NOTE
SBTX PIN ATTEN and SBTX SENSE, respectively.
612
Center frequency ..................................................... 300 MHz
Span ............................................................................. 2 MHz
power at the output of A7J4. See
A14J18 pin 14 (item (1) of
greater than 0 V. If the output power is high, the voltage should be
more negative than −10 V. If the voltages do not measure as
indicated, check that the voltages at A14J18 pins 5 and 13 are
consistent with the output of the operational amplifier.
Center frequency ......................................................... 35 GHz
Span ............................................................................. 2 MHz
power at the output of A7J2. (See item (1) of
614.)
A14J10-21 (item (3) of
than 0 V. If the output power is high, the voltage should be more
negative than −10 V. If the voltages do not measure as indicated,
check that the voltages at A14J15 pin 5 and A14U602 pin 13 are
consistent with the output of the operational amplifier.
and measure the signal
SGL SWP
Figure 12-4 on page
Figure 12-4 on page
and measure the signal
SGL SWP
Figure 12-4 on page
614.
614) should be
Figure 12-4 on page
614) should be greater
Chapter 12
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