[Test-Equipment] TV-7 Calibration

[J Forster]

Sure, if you know the characteristics of the TS-352. What you need is:

Voltage scale for the test
Ohms/Volt spec

the loading will be a resistor equal to  [Scale} x [Ohms/Volt]

For example, if the scale is 5 Volts and the TS-352 is 1000 Ohms/Volt, the load you need to apply to the circuit is 5000 Ohms.

This assumes the meter you are actually using is much higher input resistance than what is called for. If this is not true, you reed to calculate the parallel resistance of the meter and resistor to be equal to that of the TS-352.

Best,
-John



DW Holtman wrote:

> Hello,
>
> I'm getting ready to go through a TV-7/U, step by step using the Depot manual (TM-11-6625-274-35). The first step, the bias voltage test calls out a test setup then asks for a reading of 3.0 +_.1 Volts. I'm reading 5.26 Volts.
>
> My question is this. The procedure calls for using a TS-352 Multimeter. The only meters I have are high input impedance DVM and a VTVM. I know that a TS-352 will load the circuit and cause a lower reading. Is there anyway to make the necessary adjustments using a DVM or a VTVM? Is this a situation where I will need to get a good quality VOM (Simpson 260 etc) to do the adjustments? What is the ohms per volt on a TS-352?
>
> Thank you in advance for any suggestions.
>
> Best,
> DW Holtman
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