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
The link above takes you to the HP 3478A operation manual. Pages 35-62 are the remote programming functions and protocol and lists all of the remote programming commands.?
This instrument is moderately early in the development of HPIB programming so the generic HPIB commands from later developments in the HPIB languages are not recognized because they are not in the 3478A command set in its PROM.
If you want more modern HPIB programming then I would suggest the 34401A DMM (6.5 digits) or later, a better, more capable DMM than the 3478A (5.5 digits).
This issue is similar to another instrument that I use, an HP 3437A System Voltmeter. It only has 8 commands and generally ignores "generic" HPIB commands like *IDN?, *RST, etc, in this case the instrument just simply returns the measurement being displayed. I love this meter because it is capable of taking 5600 measurements per second. However, my typical sample rate is generally limited to about 350 samples per second due to slower instruments sharing the bus. But just like your HP 3478A these generic HPIB commands are either ignored or cause undesired instrument behavior.
Interesting – is this being released with the owner’s permission?? If so, I’ll mirror it and link it from the 7470.EXE help file, because it was always good to have a supported commercial alternative that I could refer people to.? If not, it’s probably better not to post it publicly.
Interesting – is this being released with the owner’s permission?? If so, I’ll mirror it and link it from the 7470.EXE help file, because it was always good to have a supported commercial alternative that I could refer people to.? If not, it’s probably better not to post it publicly.
could anybody tell me whether the entire front panel (including the PCB, front end mixer/attenuator etc) assembly is interchangeable between the 8568A and B models??
I seem to have an A unit accompanied by a B front panel….
Model Number: HP 871XC Serial Number: US37400347 To add : 100, SRL and Fault Location Software 1C2, IBASIC 1F7, LAN, ?enter the keyword: U 2 H B V A 8 K F 4 6 Spaces are for reading clarity only.
On Sat, May 18, 2024 at 08:54 AM, Four Designs Company wrote:
Do you have access to a thermal camera? A thermal signature may provide a clue as to the area of the short.
If you can power this board up while examining it, if it's all just low voltage, just try feeling for hot components. If that doesn't work, try flooding it with some sort of low boiling point solvent, like IPA or Naptha, and watch for any area where the solvent seems to be trying to move away. This can be more obvious than you'd expect.
Thanks for the quick replies all, what i had hoped to do is to recreate what the Keysight "Interactive IO" does where sending a command resets the instrument to Power on conditions i.e. forcing a Self Test etc.
*RST, RE, IN etc dont seem to be doing anything at all. According to the "advanced programming" sections of both User and Service manuals (D/L direct from Keysight this week) it says about Local, Remote, Local Lockout etc but doesnt mention any mnemonics etc, just the exact string.
I have read through the HPIB tutorial in the files section here which says about the mnemonics like LLO, REM, GET etc but trying them this morning they have not worked either.
I am using the Keysight IVI.VISA resources in Visual Studio, i essentially build a string and then write that to the USB>GPIB adapter (Keysight 82357A). doing this so far i have written my VB.net form so that i can select different functions etc and build up an entire string, such as F1RAN5T1Z1D1 and send it to the 3478A. Using Keysight IO monitor, you can "sniff" the GPIB bus and doing this i have verified that it is sending the string i have created, e.g F1RAN5T1Z1D1/n .This example would set it as DCV, Auto Range, 5 digits, Internal Trigger, Auto Zero "ON" and D1 returns it to the normal display. So this part all works, and i can switch between the measurement functions and ranges with no issue.? I can read back the status bytes too, reading the error register etc.
However i still cannot get the "generic" HPIB commands to actually work.
With my instruments which only have RS-232. I always obtain remote control of the instrument, and then immediately do a reset/self test command if possible, to check the instrument is working, initialises ok, and then carry on with any controls afterwards. So i am hoping to do the same with my GPIB devices. I thought i would start with my 3478A as its one of the more simpler devices. I also have a Keithley 213 which can only be triggered by GPIB to enable its output so that was going to be my next step after this as the 3478A is more "visible" when you have correct control over the instrument.
Craig Petersen