Siemens OP5 Equipment Manual page 126

Test and Monitoring Functions
CPU TEST Internal registers, timers and the interrupt controller of the processor are
tested.
RAM TEST
The entire static RAM is read and then write tested, its current contents are
not overwritten as a result.
EPROM TEST
The checksums of the memories are determined.
FLASH TEST In the FLASH TEST, the size and status of the FLASH memory is displayed
– for example, 128 k, "empty" or "prg." for programmed.
TTY/V.24 TEST
During checking of the TTY/V.24 interfaces, data are transferred by the
sender to the receiver of any interface by means of a shorting plug.
Note
For this test, loosen the terminal leads of IF1 and IF2 and connect a shorting
plug you have made yourself to every socket connector. To do this, use a
15-pin Sub-D connector (plug connectors), on which the following pins are
linked by insulated wire jumpers:
For the TTY test:
For the V.24 test:
CLOCK TEST The hardware clock on the OP15 is reset and the current time of day is dis-
(OP15 only) played until some key or other is pressed.
BATTERY TEST
The range in which the battery voltage is located is displayed (in 1/16 of 5 V)
Example:
Note
If the battery voltage falls below a value of + 2.5 V, which corresponds to
(7 to 8)/16 of + 5 V, a warning is issued in normal operation.
19-2
2 with 15,
6 with 11 and
7 with 9.
3 with 4 and
5 with 10.
(10–11)/16xV = 3.13 to 3.44 V
cc
Manual OP5, OP15
( ) J31069-D0840-U001-A2-7618