[Test-Equipment] How can i change an HP 3466A to work with 220v?

[Adrian Godwin]

Perikooo wrote:

>Hello:
>
>    I have a multimeter HP3466A that comes from USA and works at 110v. I
>want to change it so it can work at 220v. On the back side it sais "See the
>manual to change voltage". I have looked inside and there is 4 resistors
>labeled HI, LO, 110v and 220v. The place for LO and 220v are empty. What
>value of resistor i have to put there?
>
>  
>
In the manual I have (serial numbers 1716A18811 and above), the links are
labelled 115 and 230V instead of 110 and 220V. I don't know if the 
instructions
are any different for yours.

The resistors are 2R7, but shorting links can be used instead.

There are actually 5 resistors : two near the 115v indication and one near
each of the other labels. To convert to 220V you'd need to remove both
the resistors near '115v' and fit one near '230v'. If you leave the resistor
in the HI position the voltage range will then be 208-250v. If you move
that to the LO position, the range will be 190-233v.



HI                LO
R721              R722

R723              R725
115v              230v
R725


 86-106V     fit R722, R723, R725
104-127V     fit R721, R723, R725
190-233V     fit R722, R724
208-250V     fit R721, R724


-adrian