| Products > Test Equipment |
| My poor mans SMU - The Agilent 66311B |
| << < (7/41) > >> |
| TheSteve:
--- Quote from: nctnico on February 13, 2016, 01:09:14 am ---I'd use any knob I have around. No need to go through a lot of hassle. Besides that the rotating knob may not be very usefull. On my HP6572A it is easier to just use the keypad to enter the numbers than to endlessly rotate a knob. --- End quote --- Indeed - the knob is nice to have but typing the value in is much quicker/easier. |
| gslick:
--- Quote from: TheSteve on February 12, 2016, 11:47:14 pm ---The Agilent part # is 0360-2604 A google search indicates someone suggesting a Phoenix Contact 1757048 but that is not confirmed. I see people also have them on ebay but they never seem to post the part # :) I am using alligator clips at the moment. --- End quote --- Correct, Phoenix Contact part number 1757048 MSTB 2.5 5 Position, 5.08 mm $4.30 quantity one at Mouser http://www.mouser.com/Search/ProductDetail.aspx?R=1757048 If you also want the standard sense jumpers for the output plug those are Phoenix Contact part number 1733169, $0.82 quantity one at Mouser. http://www.mouser.com/Search/ProductDetail.aspx?R=1733169 |
| Muxr:
--- Quote from: TheSteve on February 13, 2016, 01:16:59 am --- --- Quote from: nctnico on February 13, 2016, 01:09:14 am ---I'd use any knob I have around. No need to go through a lot of hassle. Besides that the rotating knob may not be very usefull. On my HP6572A it is easier to just use the keypad to enter the numbers than to endlessly rotate a knob. --- End quote --- Indeed - the knob is nice to have but typing the value in is much quicker/easier. --- End quote --- Yeah most of the time I would use the keyboard but sometimes you want the knob, for instance when you're working with LEDs or LCD displays, or analog circuits sensitive to varying voltages. This way you can observe the effect as you change the voltage by turning the knob. |
| gslick:
The knob is Agilent / Keysight part number 33120-87401. Cost you a whopping $3.11 if you can order one direct: http://www.keysight.com/my/faces/partDetail.jspx?partNumber=33120-87401 |
| gslick:
I did some simple voltage programming accuracy tests with my 66309D supplies (same thing as a 66311B but with a second output channel and separate DVM input) and at least one of them was still pretty much spot on against the specifications for a 17 year old unit (serial number US3907xxxx), at least with zero output load. I connected the 66309D output 1 to a 34401A (no idea when it was last calibrated, not since I acquired it quite a while ago) and swept the output voltage from 0 to the 15.535V maximum in 1 millivolt steps and compared the 66309D and 34401A measured voltages against each other and the programmed output voltage. With a 12-bit DAC for programming the output voltage range that works out to be roughly 3.75mV programming resolution, and that is almost exactly what I was seeing, while the voltage read back from the 66309D was roughly within 1mV of the voltage read from the 34401A. |
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