To recap the vehicle is a 1987 300E the car was purchases from a MB dealership in New Jersey.

I came here as I just failed the smog / emissions test in California. HC was high at both 15 & 25 mph and NO was high only at 15 mph. I thought this test might help to indicate if my O2 sensor is working properly.
This morning after sleeping on it I decided to revisit the measurements. I used a Fluke DMM for all the DC Voltage measurements (should I have measured with the VAC setting? I used a Sears Tach / Volt/ RPM meter for the dwell.

Static (not running)
VDC DMM 6 = 11.77VDC
VDC DMM 3 = 3.60V
Dwell meter 52

The dwell of 52 does not agree with the following statement: With ignition switched on (engine not running) the duty cycle should be about 70% (California: 85%).
However does agree with the following statement:
If you’re using a voltmeter it should read 0.3 * Vp6 (California: 0.15 * Vp6.
In my case it would be .3 * 11.77 = 3.5V which is close to what I measured (3.6VDC) Actually I am measuring DC voltage the equation uses Vp (which I believe is V peak?)

Running (cold – open loop)
VDC DMM 6 = 14
VDCVDC DMM 3 = 7 VDC this would indicate a dwell of 50 = (1-(7V/14V)) X 100 = .5 X 100 = 50.
Dwell meter 44

Running (cold – closed loop)
VDC DMM 6 = 14
VDCVDC DMM 3 = 4.5-5 VDC this would indicate a dwell of 64 – 68.
Dwell meter 47-50 at idle, 47-52 slightly above idle.

I did all of this in about 3 minutes, idling from a cold start, so I didn’t drive the car or let it get up to full operating temp. I decided to come back inside and compose this.

So it seems like the system has some functionally. Perhaps the variations in values is based on VDC measurements with a Fluke DMM?

Any other ideas or should I move on and assume my CIS control system is moving properly.

Thanks You!