190 Series III
Service Manual
38
Warming-Up and Pre-Calibration
The Warming-Up and Pre-Calibration state is the start of the calibration mode. The display
shows
WarmingUp (CL 0200):xx %
.
Note
You must always start the calibration adjustment at the
WarmingUp (CL 0200)
step.
The calibration will be invalid if you start at any other step.
The Warming-Up and Pre-Calibration consists of a 30-minute warm-up period, followed by
several internal calibration adjustment steps that do not require input signals. The total
process takes about 75 minutes.
To do the Warming-Up and Pre-Calibration:
1. Remove all input connections from the Test Tool.
2. Press
3
(CALIBRATE) to start the Warming-Up and Pre-Calibration.
The display shows the calibration step in progress and status.
The first step is:
WarmingUp (CL 0200) %:BUSY 00:29:59
or
WarmingUp1 (CL 0200) :BUSY 00:09:59
.
The warming-up period is counted down to 00:00:00. Then the remaining pre-calibration
steps are performed automatically. The entire procedure takes about 60 minutes.
3. Wait until the display shows
End Precal: READY
.
The PreCal data have now been stored in FlashROM.
If you turn off the Test Tool now by accident, turn it on again immediately and select the
calibration mode. Continue with step 5 below.
4. Press
2
. If you turn off the Test Tool
now, and you do not turn on immediately, the Test Tool has cooled down, and you must
repeat the Warming-Up and Pre-Calibration (select the calibration mode and start at
CL 0200).
5. Press
2
(NEXT) and continue at the Final Calibration section.
