Innovate Motorsports LM-1 Digital Air/Fuel Ratio (Lambda) Meter - Manual (Page 14)

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8.4.1. Advanced output programming
Note:
The advanced analog output settings are only available from LM-1 firmware version 1.33b on. If
your LM-1 has an earlier version of firmware, you can upgrade to later versions by downloading it
from
www.tuneyourengine.com .
The normal state of the analog outputs is to update the outputs every time the LM-1 takes a new
measurement. The LM-1 is fast enough to distinguish individual pockets of exhaust gas. For
many applications this will be too fast. The advanced programming allows to set the analog out
update speed.
Press the “Advanced button” to set the advanced analog out settings. The following dialog box
will appear:
When setting the LM-1 to the slower response speed settings the measured mixture data will be
averaged over the response time setting before being output.
You can also specify what output voltage is visible on the analog outputs during warmup of the
sensor and during error conditions.
The ‘High Impedance’ setting allows to specify that the analog outputs do not drive the output
during warmup or error condition. They will be free floating. This is important for more closely
simulating a narrow band sensor. Many EFI systems monitor the impedance of a narrow band
sensor during engine warmup to determine sensor readiness. A narrow band sensor that’s too
cold will have a high impedance.
Note:
The high impedance setting will always apply to both analog outputs of the LM-1.
They can’t be set to high impedance individually.