Keysight Technologies X Series Service Manual page 315

L.O. Synthesizer/Reference Troubleshooting
A16 Reference Assembly Description
Table 8-2 A16 Reference Assembly Signals
Signal Description
External Reference Input
(1 to 50 MHz,
-5 dBm to +10 dBm)
10 MHz Out DIF
50 MHz Align Signal
4800 MHz Align Signal
50 MHz Ecal/300 MHz
Comb Output
100 MHz
1st LO
100 MHz
Ref A
100 MHz
Ref B
100 MHz
d
Ref C
300 MHz LO AIF
2.4 GHz Ref
4.8 GHz 2nd LO
4.8 GHz 1st LO Ref
a. The 10 MHz signal from A16J713 is used a reference for the standard A3 Digital IF, which supports
analysis bandwidths up to 25 MHz.
Keysight N9010A EXA Service Guide
From Location Originates From
Input from User n/a
A16J710 10 MHz Reference
A16J701 100 MHz VCXO/2
A16J701 2.4 GHz VCXO x 2 or
100 MHz VCXO x 48
A16J705 100 MHz
VCXO/2, 100 MHz
VCXO x 3
A16J706 100 MHz
VCXO
A16J707 100 MHz
VCXO
A16J716 100 MHz
VCXO
A16J707 100 MHz
VCXO
A16J711 100 MHz
VCXO x 3
d 2.4 GHz VCXO or 100
A16J718 or
MHz VCXO x 24
e
A16J715
A16J702 2.4 GHz VCXO x 2 or
100 MHz VCXO x 48
A16J703 2.4 GHz VCXO x 2 or
100 MHz VCXO x 48
To Location Purpose
A16704 Phase Lock analyzer with user
reference.
Used as a reference to other
a
A3J14
assemblies throughout the
instrument.
A9, Cal Signal 50 MHz Low band alignment
Input, Input signal.
Attenuator A.
A9, Cal Signal 4.8 GHz High band alignment
Input, Input signal
Attenuator A.
A13J6, RF Front 50 MHz Cal Signal or 300 MHz
End Assembly Comb for wideband I.F. phase
linearity
Used as a reference to other
b
A3J14
assemblies throughout the
instrument.
Not used Reserved for future use.
Frequency reference for A3
c
A3J14
Digital IF (DIF) assembly.
Divided by 10 on DIF to provide
10 MHz OUT on rear panel.
Not used Reserved for future use.
A2J300 Used as 3rd LO on A2 Analog IF
(AIF) assembly
Not used Reserved for future use.
A13J1 2nd LO for A13 Front End
assembly, downconvert low
band 1st IF to 322.5 MHz 2nd IF
A14J4 4.8 GHz reference for 1st L.O.
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