Keysight N5224B/25B Service Guide 3-43
Tests and Adjustments
Performance Tests
DC Continuity Test the LFE Board and Test Ports (Available with LFE
Option 205/220/420/425)
1
The DC continuity test verifies that the LFE board is installed correctly and
does not have any opens or shorts in the DC path.
1.
Using a DVM, connect one test probe to the center conductor of the RF
port 1 on the front panel.
2.
Connect the other test probe to the port 1 bias input (
BIAS 1 IN
) on the
rear panel.
3.
Verify the DVM measures
<
10
Ω
.
4.
Repeat these steps for each of the other test ports.
1. Your model PNA may not have all of the LFE Options listed.
If the DVM value is 0
Ω
or
>
10
Ω
, then something is incorrectly installed or
there is an open or short somewhere in the LFE board/cable path:
—
Verify the gray DC bias cables installed in
Cables, All Options, Serial Number Prefixes <6021” on page 6-19
and the blue RF flexible cables installed in
in the “Bottom
Assemblies” section—for your LFE option—are connected correctly
and not open or shorted.
Содержание N5224B
Страница 3: ...3...
Страница 4: ...4...
Страница 12: ...12 Keysight N5224B 25B Service Guide Contents...
Страница 84: ...3 52 Keysight N5224B 25B Service Guide Tests and Adjustments Adjustments 3...
Страница 145: ...Keysight N5224B 25B Service Guide 4 61 Troubleshooting This page intentionally left blank...
Страница 212: ...5 50 Keysight N5224B 25B Service Guide Theory of Operation Receiver Group Operation 5 Figure 5 17 4 Port Receiver Group...
Страница 213: ...Keysight N5224B 25B Service Guide 5 51 Theory of Operation Receiver Group Operation Figure 5 18 2 Port Receiver Group...
Страница 220: ...5 58 Keysight N5224B 25B Service Guide Theory of Operation Power Supply Group Operation 5...
Страница 225: ...Keysight N5224B 25B Service Guide 6 5 Replaceable Parts Rebuilt Exchange Assemblies Figure 6 1 Module Exchange Procedure...
Страница 490: ...6 270 Keysight N5224B 25B Service Guide Replaceable Parts Replaceable Parts Listings 6...
Страница 608: ...8 102 Keysight N5224B 25B Service Guide General Purpose Maintenance Procedures Correction Constants 8...
Страница 612: ...Appendix 4 Service Guide EEPROM Address Assignments and Location N5224 5A B PNA and N5244 5A B PNA X Instruments...
Страница 613: ...Installation Note Xxxxx xxxxx 3...