"RJK" wrote in message
...
Does anyone have a copy of this tube tester operators manual
that they could scan? I have scoured the net searching for one,
but can't find one that I can download. I don't really want to buy
one that cost me more than the tester. I am mainly interested in the
calibration procedure and any additional tube data sheets.

Any help, or a point in the right direction appreciated.

Randie

RJK: I found the 500 manual, but unlike other B&K manuals this one doesn't
give a calibration procedure.

There are 3 switches in the circuit all of which are on the front panel.
There are 3 pots and the only one on the panel is the meter shunt for the
sensitivity.(judging from the picture).

The other two pots are not mentioned anywhere in the instructions that I can
see.

One important thing about B&K testers is that the two #44 bulbs inside the
case must be a matched pair, in other words both from the same manufacturer.
Replace them as a new pair. If the meter ever starts going crazy it is
probably a burned out bulb.

There are 10 more tube tests in this manual besides what is on the chart
that is supposedly inside the lid. MH