CHECK OUT THE WIKI The purpose of the wiki is mainly to allow you to find information on instruments, either from either
- The model number
- The function(s) listed below. Some instruments have multiple functions - for example, the 4195A is a VNA, spectrum analyzer and an impedance analyzer. Therefore the 4195A is listed in multiple categories
Please also check out HPWiki available here:
- Accessory kits - various types
- AC power analyzers - PA2201A and PA2203A
- AC power supplies 6811C, 6812C, 6813C
- Airlines
- Arbitrary waveform generators M8194A
- Amplifiers?493A, 495A?
- Attenuators (optical) 8156A, 8157A, 8158B, 81566A, 81576A,?
- Attenuators (RF) 8494A
- Attenuator set (500 Ω) 350C
- Attenuator set (600 Ω) 350D
- Attenuator switch driver
- Audio analyzers? 8903A, 8903B, 8903E,? ?
- Base station test sets
- Bit error rate testers (BERTs)
- Cables
- Capacitance meters U1701A, U1701B, 4272A, 4278A, 4279A
- Capacitor Bridge 4270A,
- Capacitor standards 16380A, 16380C,?
- Carrier noise test setsi
- Cesium frequency standards
- Clamp ammeters
- Close field probes
- Crystal Impedance E4915A, E4916A
- Data Acquisition Systems (DAQs)
- DC power analyzers
- DC power supplies 6030A , 6031A , 6032A, 6033A, 6035A, 6131C, 6621A, 6622A, 6623A, 6624A, 6627A, 6255A, 6645A, 6671A, 6672A, 6673A, 6674A, 6675A, 62003A, 62003C, 62003E, 62004A, 62004B, 62004E, 62005A, 62005B, 62005E, 62006A, 62006B, 62006E, 62010A, 62010C, 62010E, 62012A, 62012C, 62012E, 62015A, 62015C, 62015E, 62018A, 62018C, 62018E, 62024A, 62024C, 62024E, 62028A, 62028C, 62028E, 62048A, 62048C, 62048E
- Delay lines
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- Device current waveform analyzers
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- Directional couplers
- Distortion analyzers 330B, 330C, 330D, 331A, 332A, 333A, 334A, 339A, 8903A, 8903B, 8903E,???
- Dynamic measurement DC source
- Electrometers
- Fading simulators
- Femto ammeters
- Filters
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- Frequency standards?
- Function Generators ? 3310A,? 8165A,
- GPIB controllers, extenders, cables etc.
- GPS frequency standards
- Harmonic mixers
- High resistance meters 4339B
- High resistance meter fixtures 16008B
- HEV EV Grid Emulators and Test Systems
- In-circuit test systems
- Impedance analyzers 4195A, 4291A, 4291B, 4395A, 4396A, 4396B, 4294A, E4990A, E4991A
- Impedance Analyzer Accessories
- Impedance / Gain Phase analyzer 4194A
- Impedance Meter 4193A,
- Isolators
- LCR meters? U1701A, U1701B, U1731A,? U1731B, U1731C, U1732A, U1732B, U1732C, U1733C, 4191A , 4192A, 4194A, 4195A, E4196A,? 4216A, 4260A, 4261A, 4262A? 4263A, 4263B, 4271B, 4274A, 4275A, 4276A , 4277A, 4284A, 4285A, 4286A, 4287A, 4291A, 4291B, 4294A, 4332A, 4342A, 4395A, 4396A, 4396B, E4980A and E4980AL
- LCR meter calibration devices? 16380A 42030A? 42090A, 42091A and 42100A
- LCR meter accessories
- 2-Terminal BNCs.
- 4-Terminal Pair (BNC connectors)
- Cable extension 16048A, 16048D, 16048E, 16048G, 16048H
- DC current bias accessories 42841A, 42842A, 42842B, 42842C, 42843A
- DC voltage bias accessories 16065A, 16065C,
- Kelvin clips 16089A, 16089B, 16089C,16089E
- Lead Components 16047A,16047B, 16047D, 16047E
- Material 16451B, 16452A
- Probes 42941A
- SMD 16034E, 16034G, 16034H
- 2-port 16096A
- 7 mm (APC7)
- 2-Terminal BNCs.
- LCZ meters? 4276A, 4277A,
- Lightwave clock / data receivers
- Lightwave converter
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- Lightwave polarization analyzers 8509B
- Logic analyzers
- Nemo wireless network solutions.
- Noise and interference test set
- Noise figure analyzers
- Noise sources 346A, 346B. 346C ,
- Matching pads (50 ohm to 75 ohm or similar)
- Materials test equipment
- Microwave repeaters
- Microwave downconverters 70427A
- Microwave / THz sources
- Milliammeter 428B
- Milliohm meter
- Mobile communications DC source
- Modular instruments
- AXIe
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- USB
- PXIe
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- Multimeters 427A, 970A
- Optical attenuators
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- Optical spectrum analyzers
- Oscilloscopes 120A, 120AR, 120B, 122A, 130A, 130B, 130BR, 130C, 140A, 140B, 141A, 150A, 150AR, 160B, 180A, 180AR, 180CD, 181A, 181AR, 181T, 181TR, 182C, 182T, 183A, 183B, 184A, 184B, 185A, 185B, 1200A, 1200B, 1220A, 1221A, 1703A, 1707A, 1707B, 1710A, 1710B, 1715A, 1722A, 1725A, 1726A, 1740A, 1741A, 1742A, 1743A, 1744A, 1746A, 1980A, 1980B, 5403A, 6000A, 6000L, 16533A, 16534A, 54100A, 5410B, 54100C, 5100D, 54111D, 54120A, 54120B, 54200A, 54501A, 54502A, 54503A, 54504A, 54520A, 54520C, 54540A, 54540C, 54542A, 54542C, 54600B, 54601A, 54601B, 54602B, 54603B,? 54645A, 54654N, 54710A, 54720A, 54750A, 54825N, E1428,?
- Oven controlled crystal oscillators (OCXOs)
- Pattern generators
- PCM terminal test set
- Phase noise measurement
- Pico ammeters
- Printers 2225
- Plotters 7470A, 7475A?
- Probes
- Protocol analyzers and exercisers.
- Power booster test sets
- Power meters 431A, 431B, 431C, 432A, 435A, 435B, 437B, 438A
- Power splitters
- Power supplies
- Pulse generators
- Q-meters 4342A?
- Q-meter calibration inductors 16470A
- Reflection transmission test set
- Return loss module (optical)
- Relays / switches / switch matrices (optical)
- Relays / switches / switch matrices (RF)
- Resistor standards 42030A?and 42100A
- S-parameter test sets
- Scalar network analyzers
- SCSI bus preprocessor interface E2324A
- Selective level meters 3746A
- Semiconductors
- Semiconductor parameter analyzers 4145A, 4155B, 4156B,
- Signal analyzers
- Signal generators / sweep generators / signal sources / oscillators 200CD, 201B, 209A, 204D,? 608A,? 8165A
- Software
- Source measure units
- Spectrum analyzers 4195A,???
- Switch control units
- SWR meter 415E?
- Time interval? counters
- Time mark generator 226A
- Timing and data state modules
- Torque wrenches
- Transmitter testers
- Trigger modules
- Ultrasound transducers
- Universal bridge? 4260A, 4265A, 4265B?
- Vacuum tube voltmeter 410C
- Vector Impedance Meter 4193A, 4800A, 4815A
- Vector Network Analyzers (VNAs) 4195A,? 8510A, 8510B, 8510C, 8753A, 8753B, 8753C, 8753D, 8753E, 8753ES, 8752ET, 8719A, 8719B, 8719C, 8719D, 8720A, 8720B, 8720C, 8720D, 8720ES, 8722A, 8722B, 8722C, 8722D, 8722ES,
- Vector Network Analyzers (VNA) calibration kits 85032B, 85032E, 85033C, 85033D, 85033E, 85050B, 85050C, 85050D, 85052B, 85052C, 85052D, 85054A, 85054B, 85054D, 85056A
- Vector Network Analyzer (VNA) verification kits
- Vector Signal Analyzer 89650S, 89600S
- Vector voltmeters 8405A, 8508A,
- VXI mainframes 70000B, 70000C
- Waveform and function generators
- Waveguide to waveguide and waveguide to coaxial transitions.
- Wireless 58 OTA chambers
- Wireless channel emulators
- Wireless network emulators
- Wireless communication test sets
?
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Re: HP-8753E S11 Intermittent Results - Switch or Bridge?
Yes, when I get into the switch, I will either take it to my work's clean room or one of our ESD benches. Some CW Measurements forthcoming. I forgot that I have my Millivac RF Millivolt meter downstairs. Need to look at the derating curves for this frequency, but it should be able to give me a good relative reading on a sudden loss of power up at 4 - 6 GHz. Rich
On Saturday, March 5, 2022, 07:16:43 PM EST, Lothar baier <lothar@...> wrote:
Try to find a cheap working 85047A ,? it uses the same inerts as the 8753D/E/ES including the solid state switch and you get 2 couplers as added bonus . ? Take one word of caution though ,? when handling the switch use a ESD mat and wriststrap or at least put some esd caps or terminations on the SMA connectors ,? those suckers are really sensitive to ESD ? Sent from for Windows ? From: [email protected] <[email protected]> on behalf of Rich Miller via groups.io <av8torrich@...>
Sent: Saturday, March 5, 2022 6:02:40 PM To: [email protected] <[email protected]>; [email protected] <[email protected]> Subject: Re: [HP-Agilent-Keysight-equipment] HP-8753E S11 Intermittent Results - Switch or Bridge? ?
Yes, I am leaning this way (switch being the issue). I think it could also be that I was running a bunch of two port calibrations using a Agilent 85093 this morning (testing eCal out). I had some averaging on, 1601 Points, and 300KHz of IF B/W
Set. Needless to say there was a lot of switching going on today. Let me check the power output now, and then flip it over and pray that one of the connectors on the switch is loose.
Looks like the parts hunt is likely on!
Rich
On Saturday, March 5, 2022, 06:55:27 PM EST, Lothar baier <lothar@...> wrote:
The reversing switches are notorious for failures especially if a unit is used in a environment that is not ESD protected .? what you can also do and you have to be cautious if you do this is to remove the switch , remove the hardline from the switch to coupler port 1 and connect the coupler directly to the source , if your trace is consistent then you definatly have a bad switch ! ? ? Sent from for Windows ? From:
Rich Miller via groups.io ? Hi Lothar: ? It just started failing Port 1 Test. I was doing this just as this email came in. It is failing it consistently. I do not have a power meter, but I can take a look with my Spectrum Analyzer to see if there are power fluctuations at 3GHz. This problem seems to focus at frequencies higher than 3GHz.? ? Once I have a look at the output power, I will open and have a look. This is a new problem, as I never saw this before. ? Rich ? On Saturday, March 5, 2022, 06:38:56 PM EST, Lothar baier <lothar@...> wrote: ? ? If the S11response changes when you switch back and forth than this would point towards a repeatability issue with the solid state switch the fact that this changes with temperature would also point towards this direction , so here are a few things to try : ?
? Sent from for Windows ? From:
Rich Miller via groups.io ? All: ? ? I have an issue with S11 (Port 1). It showed it's head now that I am running two port calibrations, thus I have not detected it just yet. My hunch is I have a problem with the switch, but not the Bridge. Here is what I am observing: ? 1. Upon boot up I get a good/normal S11 RL Response into a good 50 Ohm Load. This Condition will persist until I do one of the steps below. ? 2. If I switch to Port 2 (i.e. S22 Measurement), and then back to Port 1 the S11 Response has gone nutty (See Attached Picture).? ? 3. I have noticed, that if I depress the S11 MEAS multiple times, the S11 RL Response returns to normal.? ? 4. If you look at the enclosed picture, I have captured what I refer to as a normal S11 response, which I saved to memory (Smooth), and what it looks like after pressing S11 again (Wild variations in response). ? I have noticed there is a stark difference between instrument, cold and warm on S11. I do not however see this behavior our of any of the Port 2 Measurements regardless of temperature. Is there anywhere else this could be coming from other than the Solid State Switch, or am I way off base in my thinking here?? ? ? Rich? ? ?
? ? |
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Re: HP-8753E S11 Intermittent Results - Switch or Bridge?
Lothar baier
开云体育Try to find a cheap working 85047A ,? it uses the same inerts as the 8753D/E/ES including the solid state switch and you get 2 couplers as added bonus . ? Take one word of caution though ,? when handling the switch use a ESD mat and wriststrap or at least put some esd caps or terminations on the SMA connectors ,? those suckers are really sensitive to ESD ? Sent from for Windows ? From: [email protected] <[email protected]> on behalf of Rich Miller via groups.io <av8torrich@...>
Sent: Saturday, March 5, 2022 6:02:40 PM To: [email protected] <[email protected]>; [email protected] <[email protected]> Subject: Re: [HP-Agilent-Keysight-equipment] HP-8753E S11 Intermittent Results - Switch or Bridge? ?
Yes, I am leaning this way (switch being the issue). I think it could also be that I was running a bunch of two port calibrations using a Agilent 85093 this morning (testing eCal out). I had some averaging on, 1601 Points, and 300KHz of IF B/W
Set. Needless to say there was a lot of switching going on today. Let me check the power output now, and then flip it over and pray that one of the connectors on the switch is loose.
Looks like the parts hunt is likely on!
Rich
On Saturday, March 5, 2022, 06:55:27 PM EST, Lothar baier <lothar@...> wrote:
The reversing switches are notorious for failures especially if a unit is used in a environment that is not ESD protected .? what you can also do and you have to be cautious if you do this is to remove the switch , remove the hardline from the switch to coupler port 1 and connect the coupler directly to the source , if your trace is consistent then you definatly have a bad switch ! ? ? Sent from for Windows ? From:
Rich Miller via groups.io ? Hi Lothar: ? It just started failing Port 1 Test. I was doing this just as this email came in. It is failing it consistently. I do not have a power meter, but I can take a look with my Spectrum Analyzer to see if there are power fluctuations at 3GHz. This problem seems to focus at frequencies higher than 3GHz.? ? Once I have a look at the output power, I will open and have a look. This is a new problem, as I never saw this before. ? Rich ? On Saturday, March 5, 2022, 06:38:56 PM EST, Lothar baier <lothar@...> wrote: ? ? If the S11response changes when you switch back and forth than this would point towards a repeatability issue with the solid state switch the fact that this changes with temperature would also point towards this direction , so here are a few things to try : ?
? Sent from for Windows ? From:
Rich Miller via groups.io ? All: ? ? I have an issue with S11 (Port 1). It showed it's head now that I am running two port calibrations, thus I have not detected it just yet. My hunch is I have a problem with the switch, but not the Bridge. Here is what I am observing: ? 1. Upon boot up I get a good/normal S11 RL Response into a good 50 Ohm Load. This Condition will persist until I do one of the steps below. ? 2. If I switch to Port 2 (i.e. S22 Measurement), and then back to Port 1 the S11 Response has gone nutty (See Attached Picture).? ? 3. I have noticed, that if I depress the S11 MEAS multiple times, the S11 RL Response returns to normal.? ? 4. If you look at the enclosed picture, I have captured what I refer to as a normal S11 response, which I saved to memory (Smooth), and what it looks like after pressing S11 again (Wild variations in response). ? I have noticed there is a stark difference between instrument, cold and warm on S11. I do not however see this behavior our of any of the Port 2 Measurements regardless of temperature. Is there anywhere else this could be coming from other than the Solid State Switch, or am I way off base in my thinking here?? ? ? Rich? ? ?
? ? |
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Re: HP-8753E S11 Intermittent Results - Switch or Bridge?
Yes, I am leaning this way (switch being the issue). I think it could also be that I was running a bunch of two port calibrations using a Agilent 85093 this morning (testing eCal out). I had some averaging on, 1601 Points, and 300KHz of IF B/W Set. Needless to say there was a lot of switching going on today. Let me check the power output now, and then flip it over and pray that one of the connectors on the switch is loose. Looks like the parts hunt is likely on! Rich
On Saturday, March 5, 2022, 06:55:27 PM EST, Lothar baier <lothar@...> wrote:
The reversing switches are notorious for failures especially if a unit is used in a environment that is not ESD protected .? what you can also do and you have to be cautious if you do this is to remove the switch , remove the hardline from the switch to coupler port 1 and connect the coupler directly to the source , if your trace is consistent then you definatly have a bad switch ! ? ? Sent from for Windows ? From: Rich Miller via groups.io
Sent: Saturday, March 5, 2022 5:47 PM To: [email protected]; [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] HP-8753E S11 Intermittent Results - Switch or Bridge? ? Hi Lothar: ? It just started failing Port 1 Test. I was doing this just as this email came in. It is failing it consistently. I do not have a power meter, but I can take a look with my Spectrum Analyzer to see if there are power fluctuations at 3GHz. This problem seems to focus at frequencies higher than 3GHz.? ? Once I have a look at the output power, I will open and have a look. This is a new problem, as I never saw this before. ? Rich ? On Saturday, March 5, 2022, 06:38:56 PM EST, Lothar baier <lothar@...> wrote: ? ? If the S11response changes when you switch back and forth than this would point towards a repeatability issue with the solid state switch the fact that this changes with temperature would also point towards this direction , so here are a few things to try : ?
? Sent from for Windows ? From:
Rich Miller via groups.io ? All: ? ? I have an issue with S11 (Port 1). It showed it's head now that I am running two port calibrations, thus I have not detected it just yet. My hunch is I have a problem with the switch, but not the Bridge. Here is what I am observing: ? 1. Upon boot up I get a good/normal S11 RL Response into a good 50 Ohm Load. This Condition will persist until I do one of the steps below. ? 2. If I switch to Port 2 (i.e. S22 Measurement), and then back to Port 1 the S11 Response has gone nutty (See Attached Picture).? ? 3. I have noticed, that if I depress the S11 MEAS multiple times, the S11 RL Response returns to normal.? ? 4. If you look at the enclosed picture, I have captured what I refer to as a normal S11 response, which I saved to memory (Smooth), and what it looks like after pressing S11 again (Wild variations in response). ? I have noticed there is a stark difference between instrument, cold and warm on S11. I do not however see this behavior our of any of the Port 2 Measurements regardless of temperature. Is there anywhere else this could be coming from other than the Solid State Switch, or am I way off base in my thinking here?? ? ? Rich? ? ? ? ? |
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Re: HP-8753E S11 Intermittent Results - Switch or Bridge?
Lothar baier
开云体育The reversing switches are notorious for failures especially if a unit is used in a environment that is not ESD protected .? what you can also do and you have to be cautious if you do this is to remove the switch , remove the hardline from the switch to coupler port 1 and connect the coupler directly to the source , if your trace is consistent then you definatly have a bad switch ! ? ? Sent from for Windows ? From: Rich Miller via groups.io
Sent: Saturday, March 5, 2022 5:47 PM To: [email protected]; [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] HP-8753E S11 Intermittent Results - Switch or Bridge? ? Hi Lothar: ? It just started failing Port 1 Test. I was doing this just as this email came in. It is failing it consistently. I do not have a power meter, but I can take a look with my Spectrum Analyzer to see if there are power fluctuations at 3GHz. This problem seems to focus at frequencies higher than 3GHz.? ? Once I have a look at the output power, I will open and have a look. This is a new problem, as I never saw this before. ? Rich ? On Saturday, March 5, 2022, 06:38:56 PM EST, Lothar baier <lothar@...> wrote: ? ? If the S11response changes when you switch back and forth than this would point towards a repeatability issue with the solid state switch the fact that this changes with temperature would also point towards this direction , so here are a few things to try : ?
? Sent from for Windows ? From:
Rich Miller via groups.io ? All: ? ? I have an issue with S11 (Port 1). It showed it's head now that I am running two port calibrations, thus I have not detected it just yet. My hunch is I have a problem with the switch, but not the Bridge. Here is what I am observing: ? 1. Upon boot up I get a good/normal S11 RL Response into a good 50 Ohm Load. This Condition will persist until I do one of the steps below. ? 2. If I switch to Port 2 (i.e. S22 Measurement), and then back to Port 1 the S11 Response has gone nutty (See Attached Picture).? ? 3. I have noticed, that if I depress the S11 MEAS multiple times, the S11 RL Response returns to normal.? ? 4. If you look at the enclosed picture, I have captured what I refer to as a normal S11 response, which I saved to memory (Smooth), and what it looks like after pressing S11 again (Wild variations in response). ? I have noticed there is a stark difference between instrument, cold and warm on S11. I do not however see this behavior our of any of the Port 2 Measurements regardless of temperature. Is there anywhere else this could be coming from other than the Solid State Switch, or am I way off base in my thinking here?? ? ? Rich? ? ? ? ? |
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Re: HP-8753E S11 Intermittent Results - Switch or Bridge?
Hi Lothar: It just started failing Port 1 Test. I was doing this just as this email came in. It is failing it consistently. I do not have a power meter, but I can take a look with my Spectrum Analyzer to see if there are power fluctuations at 3GHz. This problem seems to focus at frequencies higher than 3GHz.? Once I have a look at the output power, I will open and have a look. This is a new problem, as I never saw this before. Rich
On Saturday, March 5, 2022, 06:38:56 PM EST, Lothar baier <lothar@...> wrote:
If the S11response changes when you switch back and forth than this would point towards a repeatability issue with the solid state switch the fact that this changes with temperature would also point towards this direction , so here are a few things to try : ?
? Sent from for Windows ? From: Rich Miller via groups.io
Sent: Saturday, March 5, 2022 5:24 PM To: HP-Agilent-Keysight-equipment Subject: [HP-Agilent-Keysight-equipment] HP-8753E S11 Intermittent Results - Switch or Bridge? ? All: ? ? I have an issue with S11 (Port 1). It showed it's head now that I am running two port calibrations, thus I have not detected it just yet. My hunch is I have a problem with the switch, but not the Bridge. Here is what I am observing: ? 1. Upon boot up I get a good/normal S11 RL Response into a good 50 Ohm Load. This Condition will persist until I do one of the steps below. ? 2. If I switch to Port 2 (i.e. S22 Measurement), and then back to Port 1 the S11 Response has gone nutty (See Attached Picture).? ? 3. I have noticed, that if I depress the S11 MEAS multiple times, the S11 RL Response returns to normal.? ? 4. If you look at the enclosed picture, I have captured what I refer to as a normal S11 response, which I saved to memory (Smooth), and what it looks like after pressing S11 again (Wild variations in response). ? I have noticed there is a stark difference between instrument, cold and warm on S11. I do not however see this behavior our of any of the Port 2 Measurements regardless of temperature. Is there anywhere else this could be coming from other than the Solid State Switch, or am I way off base in my thinking here?? ? ? Rich?
? ? ? |
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Re: HP-8753E S11 Intermittent Results - Switch or Bridge?
Lothar baier
开云体育If the S11response changes when you switch back and forth than this would point towards a repeatability issue with the solid state switch the fact that this changes with temperature would also point towards this direction , so here are a few things to try : ?
? Sent from for Windows ? From: Rich Miller via groups.io
Sent: Saturday, March 5, 2022 5:24 PM To: HP-Agilent-Keysight-equipment Subject: [HP-Agilent-Keysight-equipment] HP-8753E S11 Intermittent Results - Switch or Bridge? ? All: ? ? I have an issue with S11 (Port 1). It showed it's head now that I am running two port calibrations, thus I have not detected it just yet. My hunch is I have a problem with the switch, but not the Bridge. Here is what I am observing: ? 1. Upon boot up I get a good/normal S11 RL Response into a good 50 Ohm Load. This Condition will persist until I do one of the steps below. ? 2. If I switch to Port 2 (i.e. S22 Measurement), and then back to Port 1 the S11 Response has gone nutty (See Attached Picture).? ? 3. I have noticed, that if I depress the S11 MEAS multiple times, the S11 RL Response returns to normal.? ? 4. If you look at the enclosed picture, I have captured what I refer to as a normal S11 response, which I saved to memory (Smooth), and what it looks like after pressing S11 again (Wild variations in response). ? I have noticed there is a stark difference between instrument, cold and warm on S11. I do not however see this behavior our of any of the Port 2 Measurements regardless of temperature. Is there anywhere else this could be coming from other than the Solid State Switch, or am I way off base in my thinking here?? ? ? Rich? ? ? ? |
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HP-8753E S11 Intermittent Results - Switch or Bridge?
All: I have an issue with S11 (Port 1). It showed it's head now that I am running two port calibrations, thus I have not detected it just yet. My hunch is I have a problem with the switch, but not the Bridge. Here is what I am observing: 1. Upon boot up I get a good/normal S11 RL Response into a good 50 Ohm Load. This Condition will persist until I do one of the steps below. 2. If I switch to Port 2 (i.e. S22 Measurement), and then back to Port 1 the S11 Response has gone nutty (See Attached Picture).? 3. I have noticed, that if I depress the S11 MEAS multiple times, the S11 RL Response returns to normal.? 4. If you look at the enclosed picture, I have captured what I refer to as a normal S11 response, which I saved to memory (Smooth), and what it looks like after pressing S11 again (Wild variations in response). I have noticed there is a stark difference between instrument, cold and warm on S11. I do not however see this behavior our of any of the Port 2 Measurements regardless of temperature. Is there anywhere else this could be coming from other than the Solid State Switch, or am I way off base in my thinking here?? Rich? |
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Re: Scoping the Power Rails [8566B]
On Sat, Mar 5, 2022 at 02:32 PM, Jinxie wrote:
@Ozan--- Hi Jinxie, Could you put screenshot of the waveform in a photo folder, or attach to the posts if the image is not large? Also note how you are measuring (50-ohm terminated, with a scope probe etc). What may look like a bad signal to you could be OK for its purpose. Perhaps one of the group members can compare with their 8566B. I do have RF section of an 8566B bought for parts but I don't know if my reference generator works.? At a high level: A7A1 has its own lock signal which can tell you if there is an issue in that area. Are you sure reference section has an issue? Do you have 100MHz counter to measure the 100MHz output? As Bruce said there are lock indicators on M/N block. I attached the picture on mine that shows green LED for lock. I believe different PLLs lock at different spans but as I wrote above I don't have a way to exercise them (yet).? Ozan |
Jinxie
