Siemens VDO DTCO 1381, Technical Description

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Service only
8.2 Permissible error limits Installation and functional test
8 - 6
© Siemens VDO Automotive AG Edition 07/2007
TD00.1381.00 13
2 102
Time Permissible time-measurement error limit:
• ± 2 seconds/day
Accuracy of the time measurement:
• at least 1 second
The time measurement is accurate to at least 1 second.
8.2.1 Creating and sealing installation plate
After the installation and functional test, the installation plate must
be attached on, in, or directly next to the recording equipment
where it will be easily visible.
1. The following information must be transferred to the instal-
lation plate:
• Calibration date
• Effective wheel circumference (l-value, max. of four digits)
• Characteristic coefficient (w-value, max. of five digits)
• Recording equipment constant (k-value, five digits)
• Vehicle identification number (max. of 17 digits)
• Device number (max. 10 digits)
• Tire size (max. 15 digits)
• Name and address or company logo*.
2. Attach the installation plate on, in, or directly next to the
recording equipment where it will be easily visible.
3. Secure the installation plate with sealing foil.
All provided accuracy data are applicable under test conditions, such
as room temperature.
On a DTCO 1381 that is not activated, the compliance with all spec-
ified error limits can be performed only visually.
If the installation test is performed on a DTCO 1381 that is already
activated, the detected and saved data can be evaluated.
The installation plate must be protected with a sealing foil, unless it
is installed in a way that it cannot be withdrawn without destroying
the information it provides.
The installation plate must be replaced after every intervention into
the system.
* The name and address or company logo of the workshop or the
manufacturer may be printed on the sealing foil.