AC Signal Conditioning for a Digital Panel Meter

[SG-1]

I have a Simpson 35 Falcon series voltmeter ( True RMS ) & the display is "bouncy".  The least significant digit is changing so fast you cannot read it.  A Fluke 27 DMM was used on the Simpson's input for comparison and it was stable or updated less frequently.  The Simpson updates 3 times per second, the fluke updates 2 times per second. 

Question: I need to condition the input signal so the displayed result is more stable looking.  Can I use a capacitor across the input for signal conditioning ? 

[vk6zgo]

It would probably be interesting to look at the voltage with an Oscilloscope,as it seems to have problems.
Have you checked it with a DMM on DC?
Maybe it has a DC component which is upsetting your panel meter.

VK6ZGO

[SG-1]

Thanks VK6ZGO.  I will check on that. There are other panel meters on the same source with out the problem, but they are different models &/or manufactures.