Keysight N9038A MXE Service Guide 339
Analog & Digital IF
A3 Digital I.F. Assembly Description
The Smart Noise Source (SNS) interface includes power switching for the
28 volt and 15 volt power supply. In addition, it has buffers to interface to
the SNS I2C bus for control and read back of ENR data automatically. The
SNS connector is used with the SNS series noise sources.
DSP
The signal from the ADC is sent to the Digital Signal Processor.
Digital Bus Common Mode Filtering
The Digital Bus is a real time digital interface. It is sometimes referred to as
Messenger or LVDS. The implementation on the Digital IF is unidirectional,
meaning it can only source data, not receive it. Common mode filtering is
required to translate the digital ground referenced signals to analog ground
at the rear panel.
A3 Digital IF Assembly Connections
The connections to and from the A3 Digital IF assembly are as listed in
, as illustrated in
and
.
Table 10-6
A3 Digital IF Assembly Signals
Port
Description
To/From
Cable
Frequency
J4
Digital Bus
Not Available
n/a
n/a
J5
Analog Out
Rear Panel
n/a
n/a
J6
Trigger 2 Out
Rear Panel
n/a
n/a
J7
Trigger 1 Out
Rear Panel
n/a
n/a
J8
Sync
Rear Panel
n/a
n/a
J9
Trigger 2 In
Rear Panel
n/a
n/a
J10
Trigger 1 In
Rear Panel
n/a
n/a
J11
Noise Source
Rear Panel
n/a
n/a
J12
Smart Noise Source
Rear Panel
A3W1
n/a
J13
Reference Out
Rear Panel
n/a
10 MHz
J14
Reference In
A16 Reference J716
W20
100 MHz
J15
IF Input
A15 Front End Control J901
a
W15
322.5 MHz
J16
Not Used
n/a
n/a
n/a
J17
Step Cal Output
A16 Reference J726
W23
n/a
J18
Not Used
n/a
n/a
n/a
J19
IF Input
A2 Analog IF J601
W17
22.5 MHz
Содержание N9038A
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Страница 268: ...268 Keysight N9038A MXE Service Guide L O Synthesizer A14 L O Synthesizer Assembly Troubleshooting ...
Страница 354: ...354 Keysight N9038A MXE Service Guide Analog Digital IF A3 Digital I F Troubleshooting ...
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Страница 504: ...Keysight N9038A MXE Service Guide 523 Replaceable Parts Hardware Figure 17 26 Front Frame Exploded View CCFL Backlight ...
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Страница 741: ...760 Keysight N9038A MXE Service Guide Tests Intermittent Unsteady Drifting Disturbances ...