To Update BG on a pump: ISIG divided by BG

Diabetes Technology Glucose Monitoring
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It works the same way with an Enlite. The number of days before you are prompted with a SENSOR END alert depends on the pump. If you have a 530G (or later) then you get a SENSOR END after 6 days (in the US). With the Paradigm Revel x23 pumps it happens after 3 days.

I am not completely sure when you do and when you do NOT have to go through the 2 hour WARM-UP process before calibrating a sensor. One thing that will definitely necessitate a WARM-UP is disconnecting and reconnecting the transmitter.

But, if I recall correctly, setting Sensor Off in the pump and waiting long enough before turning it on again will also prompt a WARM-UP. But I can’t remember how long is “long enough” and I certainly have not tried to do this recently to verify it. (It takes “too long” to test. :wink: :smirk: )

My best guess so far is that during the WARM-UP process the transmitter and sensor are getting in synch with each other. If you follow the ISIG level on your pump during each 5 minute interval of as WARM-UP it looks something like what’s in the table below.

<ISIG value> @ <time> every 5 minutes during 2 hour Medtronic sensor WARM-UP.
    ISIG 123.12 @ 13:34; 43.94 @ 13:39; 00.04 @ 13:44; 55.66 @ 13:49
    ISIG  00.00 @ 13:54; 00.00 @ 13:59; 02.14 @ 14:04; 25.02 @ 14:09
    ISIG  30.36 @ 14:14; 32.08 @ 14:19; 35.32 @ 14:24; 38.46 @ 14:29
    ISIG  40.38 @ 14:34; 42.18 @ 14:39; 43.26 @ 14:44; 45.40 @ 14:49
    ISIG  47.06 @ 14:54; 47.04 @ 14:59; 48.04 @ 15:04; 46.76 @ 15:09
    ISIG  45.78 @ 15:14; 46.74 @ 15:19; 47.92 @ 15:24;

Notice that initially the ISIG values are all over. But as time passes they get closer & closer to each other.

When you do not disconnect the transmitter, then I do not think there is a WARM-UP for any of the three possible “Link To Sensor” functions. You should just get the Meter BG NOW alert beep within 5 minutes because the sensor & transmitter are already “in synch” with each other from a previous WARM-UP.

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