DR. JOHANNES HEIDENHAJN GmbH
D-8225 Traunreut ‘Tel. (08669) 31-O
SERVICE MANUAL TNC 151/155
Paae 34
Kundendienst
Se&ion 2.2.6
Individual test runs
Each of the individual, sequential tests can also be made to
run cyclically. To do this, the test program nust be interrup-
ted with the key
El
The VDU will then display:
"1 = CYCLIC
2 = STOP AT FAULT"
Pressing keymcauses the test (still to be selected) to
run cyclical1
0
regardless of whether a fault is detected.
Pressing key 2 causes the test to run cyclically until
such time as a ault is detected.
When one mode or the other has been selected, the VDU will
display:
"SELECT TEST"
The desired test must then be selected with the appropriate
key.
Another possible interrupt to the Burn-In test program is by
means of the key
Bl
With this key the entire set of ASCII characters can be dis-
played on the VDU.
(With TNC 155 only!)
A graphics display consisting of a square grid with a circle
in the centre can be displayed by pressing the key marked
@iI
Similarly the NC and PLC software numbers can be displayed by
pressing the key
El
Calibration check of the Analogue Board ("TRIMMING ROUTINES")
Interrupting the Burn-In test program with the key
gains access to the calibration tests. Exit from these tests
is only possible with the key
Within the
ted:
-Key 1 0:
-Keym:
calibration mode the following tests can be selec-
Reference amplifier performance *
(~TRANSMISSI~~~
~miAvIouR m. AMP.")
Analogue output voltage **
('ANALOG VOLTAGE OUTPUT")
- K=Y H :
-KeypJ:
32-step monotonic DAC *
("MONC'TONIY DAC; 32 STEPS")
DAC performance *
("TRANSMISSION BEBAVIOUR DA'?')
-KeypJ:
-=Y@
-KeypJ:
--ym:
0 text in
+ 1OV analogue output **
T"DAC + ANALOG OUTPUT + 10X'")
Linearity of analogue output *
("DAC + ANALOG OUTPUT LINEARITY')
Battery voltage check **
("TEST BATTERY VOLTAGE")
Transducer pulse count comparison *
('PULSE COUNT OUTPUT")
brackets appears on VDU
* these test are not suitable for customer use.
** see following explanations:
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