Test Functions
The internal RAM of the processor and the EPROM are tested during the
start-up phase. All display elements light up for approx. 0.5 seconds if no
errors are detected during the test. The display remains blank if an error is
isolated.
Starting the test by entering a code
The identification is called with the following ESC sequence:
ESC [0c
The display runs through the self-test program once when the code is
transmitted to the display. Code:
ESC [?2;nn;2;2;20c
The current version number (00-99) will be indicated in place of nn.
The test software performs the following functions:
n
The microprocessor and the RAM within the processor are tested. Errors
detected are displayed.
n
Formation and comparison of the PROM checksum. Errors detected are
displayed.
n
The display type and version number of the microprogram are displayed.
n
The parameters of the serial interface are displayed. The baud rate and
the parity parameters are output.
n
Display is tested by generating a rough chess board pattern.
n
Display is tested by generating a detailed chess board pattern.
TEST FUNCTIONS
22
