Precisa 490 IB Series, Руководство по эксплуатации, Страница: 42 / 46

■ 14 Service
40
AUTOCAL. -TIME n h“. (e.g. 6 h for 06.00 o'clock in the morning)
14.4 Automatic Repeatability Test (ART)
During the Automatic Repeatability Test, the internal weight is measured 10 times, and the standard devia-
tion is calculated from this and logged.
14.5 Software update
Our balances are instruments which are being continuously advanced and improved. For this reason, it is
possible to update to the latest version of the instrument software via the internet.
In order to update your software, you need to download the Download Tool from the website and install it
onto a PC (Windows 95 or higher) with a serial interface.
The software for the balance can also be downloaded from the Downloads area on the website. This can
then be loaded into the instrument with the aid of the download tool.
System requirements
• PC Windows 95 or higher
Serial data cable, depending on the PC's serial interface (see Accessories).
Installation of the download tool
• Download the Download Tool from the Downloads area on the website and install it onto your PC.
• Once the program has been successfully installed, you can start updating the balance software.
Balance software download
• Download the software for the balance from the website under Downloads and save it on your own PC.
• Connect the balance to the PC via the data cable and switch it on.
• Start the installed Download Tool.
• Open „downloaded balance software“ under the menu option „File“.
NOTE
For automatic calibration by time and by time/temp. the date and time of the balance must first be cor-
rectly set (see chapter 8.3.8 "Date and time").
Calibration can also be effected manually at any time when auto-calibration is activated.
Automatic calibration then takes place only if no weight has been placed on the pan for at least five min-
utes.
It is recommended that the time for auto-calibration be set outside the normal business hours (for exam-
ple, in the early morning).
Display Key Step
+0,0000
9
The balance is in Weighing mode.
+0,0000
9
« T »
Press until „REPEATABILITY TEST“ apears.
Repeatability test
- - 000
The internal weight is applied and measured.
10 measurements are performed.
measurement 1 EXIt
- - 000
«
D
» If required, the measuring program can be exited.
measurement 3 EXIt
+0,0001
9
The standard deviation of the measurement is calculated and
displayed as a result, and the log is printed.
STANDARD-DEV. exit