V-7A VTVM

[Ed Richards]

Dave;


On Thu, 22 Jul 1999 18:38:26 -0500 "T. David Cohen" <tdavid at EATEL.NET>
writes:
>i just acquired a V7-A which isn't too bad considering its age but,
>as
>usual, no manual.
>
>three questions...
>
>1)  would anyone be kind enough to provide a copy of the manual...of
>course i'd be glad to pay costs involved.
>
>2)  it seems that i remember a battery being used for the ohmmeter.
>there is an aluminum cup on the curcuit board that might be used for
>the
>positive terminal of a 'c' or 'd' cell but there is no negative
>terminal.  what is the configuration?  a spring?  hard to remember
>from
>40 years ago.

ER: Yes a spring, and it is a "C" cell

>
>3)  finally, what circuitry is contained in the dc probe?  is there
>series of resistors between the tip and the plug?  any other
>components?  again, memory fails and the probes are missing.

ER: The DC probe has a 1 megohm resistor in series at the end of the
probe. The AC / OHMS probe is straight through. Or a single probe with a
1 megohm resistor and a switch to short it out for AC / OHMS.

>thanks for the help!
>
>Dave Cohen
>
>Sponsored by the City of Tempe
>
>Listserver Submissions:  heath at listserv.tempe.gov
>Listserver Subscription: listserv at listserv.tempe.gov - "subscribe
>heath 'name' 'call'"
>Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff
>heath"

Regards,
Ed Richards

Sponsored by the City of Tempe 

Listserver Submissions:  heath at listserv.tempe.gov
Listserver Subscription: listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'"
Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"