Keysight N9038A MXE Service Guide 133
Input Selection & Level Control
Input Selection & Level Control Section Purpose
Input Selection & Level Control Assembly Descriptions
A9 Input Attenuator A
There are two different A9 Input Attenuator A assemblies used in the N9038A.
One is used in instruments with Option 503, 508, and 526 and the other with
Option 544.
Option 503, 508, and 526
This assembly has two 2 dB attenuator sections, a DC block, and a second
RF input port.
With the DC block switched in (AC coupled mode), the low end minimum
frequency range increases from 20 Hz to 10 MHz due to capacitive effects.
Option 544
This assembly has a total 10 dB of attenuation. There are two 2 dB
attenuator sections, and a 6 dB attenuator section. It also has a second RF
input port.
Unlike the Option 503, 508, and 526 A9 Input Attenuator A, this does not
have a switchable DC block - it is always DC coupled. Because of this the
low end minimum frequency range is always 20 Hz.
Control for this assembly comes from the A15 Front End Controller assembly.
A10 Input Attenuator B
There are two different A10 Input Attenuator B assemblies used in the N9038A.
One is used in instruments with Option 503, 508, and 526 and the other with
Option 544.
Option 503, 508, and 526
This assembly has a total of 66 dB of attenuation. There is a 30 dB, 20 dB,
6 dB, and 10 dB section in the A10 assembly, in that order.
Option 544
This assembly has a total 60 dB of attenuation. There is a 20 dB, 30 dB, and
10 dB section in the A10 assembly, in that order.
Control for this assembly comes from the A15 Front End Controller assembly.
Total input attenuation of the A9 and A10 assemblies combined is 70 dB in
2 dB steps.
Содержание N9038A
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Страница 16: ...16 Contents ...
Страница 66: ...66 Keysight N9038A MXE Service Guide Boot Up and Initialization Potential Problems During Boot Process ...
Страница 130: ...130 Keysight N9038A MXE Service Guide Instrument Messages Condition Messages ...
Страница 216: ...216 Keysight N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting ...
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 ...
Страница 406: ...406 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams Block Diagrams ...
Страница 407: ...Keysight N9038A MXE Service Guide 407 Block Diagrams Block Diagrams N9038A RF Input Option 503 508 526 Block Diagram ...
Страница 408: ...408 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams N9038A RF Input Option 544 Block Diagram ...
Страница 428: ...Keysight N9038A MXE Service Guide 447 Block Diagrams Block Diagrams LO Synthesizer Block Diagram ...
Страница 429: ...448 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams Reference Block Diagram ...
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Страница 436: ...Keysight N9038A MXE Service Guide 455 Service and Diagnostics Menus Service Menus Figure 16 5 Alignments Menu ...
Страница 500: ...Keysight N9038A MXE Service Guide 519 Replaceable Parts Hardware Figure 17 23 Front Frame Exploded View LED Backlight ...
Страница 504: ...Keysight N9038A MXE Service Guide 523 Replaceable Parts Hardware Figure 17 26 Front Frame Exploded View CCFL Backlight ...
Страница 589: ...608 Keysight N9038A MXE Service Guide Assembly Replacement Procedures Motherboard Assembly Figure 18 57 Bottom Screws ...
Страница 627: ...646 Keysight N9038A MXE Service Guide Post Repair Procedures Post Repair Procedures ...
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Страница 643: ...662 Keysight N9038A MXE Service Guide Instrument Software Software Updates ...
Страница 741: ...760 Keysight N9038A MXE Service Guide Tests Intermittent Unsteady Drifting Disturbances ...