Metrohm 765 Dosimat User Manual download pdf (Page 28)

3.2. Diagnosis

765 Dosimat

<2>

display test

<GO>

Characters are generated for an optical check of the display:

1. The display is written to from left to right with the character

2. Repeatedly the display is written to with the characters

and .

3. In quick succession the display is written to with the capital letters from the alphabet.

4. The display is written to with the character set (see Fig. 1) as continuous moving display.

The test sequence can be held by pressing key <5> and restarted.

The continuous moving display is quit by pressing the keys <5> and <CLEAR>.

DP, keys test for 1.5 s

key: FILL }

The display requests to press the key <FILL> on the front of the Dosimat.

If the correct key was pressed and the test was positive the name of the next key to be pressed will be dis-

played.

Display E 10: and on the right-hand side the name of an other key indicates a fault in the keyboard matrix, or

the wrong key was pressed.

A fault indication may be cancelled by pressing <CLEAR>. “breaking off ?“ is then displayed, asking you

whether you want to stop the test or not.

- To stop press <CLEAR>.

- To continue press <GO> until the display shows “keys test end“

After pressing the last key (GO), the following appears:

keys o.k.

<CLEAR>

diagn. key 0...9

Fig. 1

3.2.7 Diagnosis analog output

To carry out this diagnosis step the optional analog output has to be fitted in the Dosi-

mat (fitted as a standard with versions 2.765.0020, 2.765.0040)

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Metrohm 765 Dosimat User Manual Page 28