114
Chapter 5
Troubleshooting the Synthesizer Section
Verifying the A12 Synthesizer Board
Verifying the A12 Synthesizer Board
Troubleshooting LO and
Sampling Oscillator Unlock Conditions:
Error messages
Sampling Oscillator Unlock, Failure acquiring SO frequency
lock
This message appears when the 600 MHz signal to the A12A2 is not
present. Check the MMCX cable connections on A12W2 between the
A12A2 and A12A1 boards.
1St LO unlock, failure acquiring FracN frequency lock
This message will also appear when the 1st LO is unlocked for many
reasons. It will often appear whenever the sampling oscillator unlock
message is displayed.
NOTE
Perform the Auto Align All routine before beginning troubleshooting.
The LO power is adjusted during this internal alignment process.
Input signal check
Measure the sampler output from the A21 LO distribution amplifier.
Since removing the LO signal will cause a 1st LO unlock and an
unstable measurement, you must inject a signal into the LO amplifier
and measure the signal at the sampler output port.
NOTE
Please use care when moving the semi rigid cables since they can crack
or break, especially at the connector solder joints. The almost invisible
cracks can cause residual responses to appear.
Power down the PSA.
Disconnect W35, the semi-rigid cable from the LO IN port of the
A21 LO distribution amplifier.
Connect a cable with SMA connectors to a source capable of 4 GHZ and
+10 dBm output power. Measure the power level at the end of the cable
with a power meter to assure the proper level.
Disconnect the power sensor, and connect the cable to the LO IN port of
A21.
Disconnect the semi-rigid Sampler In cable W24 from J1 of the A12
synthesizer. Connect a spectrum analyzer to the end of this cable.
Содержание E4440A
Страница 12: ...12 Contents...
Страница 13: ...13 1 Overview...
Страница 42: ...42 Chapter1 Overview Contacting Agilent Technologies...
Страница 43: ...43 2 Overall Troubleshooting...
Страница 69: ...69 3 Troubleshooting the RF Section E4440A E4443A E4445A...
Страница 88: ...88 Chapter3 Troubleshooting the RF Section E4440A E4443A E4445A RF Section Description E4440A E4443A E4445A...
Страница 89: ...89 4 Troubleshooting the RF Section E4446A E4447A E4448A...
Страница 110: ...110 Chapter4 Troubleshooting the RF Section E4446A E4447A E4448A RF Section Description E4446A E4447A E4448A...
Страница 111: ...111 5 Troubleshooting the Synthesizer Section...
Страница 125: ...125 6 Troubleshooting the IF Section...
Страница 144: ...144 Chapter6 Troubleshooting the IF Section Verifying the A7 Digital IF Board...
Страница 145: ...145 7 Troubleshooting the Processor Power Supply and Display...
Страница 165: ...165 8 Hardware Options...
Страница 171: ...Chapter 8 171 Hardware Options Verifying Option 110 Figure 8 2 Preamplifier Pin Out and Expected Voltage Levels...
Страница 184: ...184 Chapter8 Hardware Options Verifying Option 122 or 140 Wide Bandwidth Digitizer...
Страница 186: ...186 Chapter8 Hardware Options Verifying Option 122 or 140 Wide Bandwidth Digitizer...
Страница 194: ...194 Chapter8 Hardware Options Overview and Verification of Option 123 Microwave and Millimeter Preselector Bypass...
Страница 196: ...196 Chapter8 Hardware Options Overview and Verification of Option 123 Microwave and Millimeter Preselector Bypass...
Страница 202: ...202 Chapter8 Hardware Options Overview and Verification of Option 123 Microwave and Millimeter Preselector Bypass...
Страница 206: ...206 Chapter8 Hardware Options Verifying Option 124 Y Axis Video Out...
Страница 207: ...207 9 Block Diagrams...
Страница 211: ...Chapter 9 211 Block Diagrams Signal Mnemonics Figure 9 1 Graphic Symbols...
Страница 212: ...212 Chapter9 Block Diagrams Overall Block Diagrams Overall Block Diagrams...
Страница 214: ...214 Chapter9 Block Diagrams Overall Block Diagrams...
Страница 216: ...216 Chapter9 Block Diagrams Overall Block Diagrams...
Страница 217: ...Agi l ent MOTHERBOARD E4440 60001 se860a...
Страница 218: ...218 Chapter9 Block Diagrams Overall Block Diagrams...
Страница 220: ...220 Chapter9 Block Diagrams Overall Block Diagrams...
Страница 221: ...221 10 Replaceable Parts Lists and Locations...
Страница 252: ...252 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 4 Major Assemblies...
Страница 254: ...254 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 5 RF Section E4440A E4443A E4445A Standard...
Страница 256: ...256 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 6 YTO Assembly...
Страница 258: ...258 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 7 RF Input Connector E4440A E4443A E4445A...
Страница 260: ...260 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 8 RF Section Cables E4440A E4443A E4445A Standard...
Страница 267: ...Chapter 10 267 Replaceable Parts Lists and Locations Hardware...
Страница 268: ...268 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 14 RF Section E4446A E4447A E4448A Standard...
Страница 284: ...284 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 22 Option Driver Board and Cables...
Страница 292: ...292 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 27 Front Panel Parts...
Страница 298: ...298 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 32 Rear Frame Hardware...
Страница 300: ...300 Chapter10 Replaceable Parts Lists and Locations Hardware Figure 10 33 Mid Web Parts Figure 10 34 Fan Guard...
Страница 304: ...304 Chapter10 Replaceable Parts Lists and Locations Hardware...
Страница 305: ...305 11 Assembly Replacement Procedures...
Страница 321: ...Chapter 11 321 Assembly Replacement Procedures RF Section E4440A E4443A E4445A Figure 11 9 RF Section Cables Standard...
Страница 337: ...Chapter 11 337 Assembly Replacement Procedures RF Section E4446A E4447A E4448A Figure 11 21 RF Section Removal...
Страница 340: ...340 Chapter11 Assembly Replacement Procedures RF Section E4446A E4447A E4448A Figure 11 24 RF Section Cables Standard...
Страница 379: ...Chapter 11 379 Assembly Replacement Procedures A23 Disk Drive Figure 11 45 Disk Drive and Motherboard Removal...
Страница 380: ...380 Chapter11 Assembly Replacement Procedures A23 Disk Drive Figure 11 46 Disk Drive Board Removal...
Страница 383: ...Chapter 11 383 Assembly Replacement Procedures A25 Motherboard Figure 11 47 Bottom Screws...
Страница 405: ...Chapter 11 405 Assembly Replacement Procedures Front Frame Subassemblies Figure 11 63 Keypad Parts...
Страница 409: ...409 12 Post Repair Procedures...
Страница 429: ...429 13 Firmware Upgrades...
Страница 432: ...432 Chapter13 Firmware Upgrades Firmware Upgrades Including Measurement Personality Upgrades...