Metrohm 827 pH lab Instrukcja Użytkownika Pobierz pdf (Strona 56)

8.3 Diagnosis

48 826/827 pH meter, Instructions for Use

AD converter test

The electronic components of the analog-digital converter are checked.

At the end the messages 'Init ADC ok', 'Comm.test ADC ok' and

'ADC Interrupt ok' should appear.

LC display test

With this test you can check that the LCD display is functioning proper-

ly. It consists of a sequence of individual tests which can be switched

forward with any key (except <QUIT>). After displaying the character

set the test must be terminated with <QUIT>.

key test

The correct functions of all the instrument keys can be checked here.

The instrument will respond to the pressing of each key by displaying

the corresponding key code. This test is terminated by pressing the

<QUIT> key twice.

Key Code

< > 2

<CAL> 5

<QUIT> 1

<OK> 7



> 4



> 6



> 8



> 3

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 81 82

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Metrohm 827 pH lab Instrukcja Użytkownika Strona 56