Chapter 7
39
. The TYMP hardkey is now simulated to start the system on the TYMP test
screen. This complete the power-up and enter the TYMP test mode (handled
in tymp_sk()).
40
. Control is passed to the tymp test routines. T he remaining power up
sequences are completed.
41. Altitude information is read from the probe SEREE. Calculates site altitude oc-
clusion and probe in ear limits are calculated.
42
. Initialize current RTL values from either GSI default RTL or USER selected
values. If error reading RTL values, GSI defaults are loaded.
43
. The unit we reads the CAL/DIAG/NORMAL run switch and determine s the
mode -normal mode, calibration mode or diagnostics mode and for the
latter two, the appropriate sequence is applied to enter into cal/diag.
44
. The SP to calculates the CK numbers necessary to perform tests, etc.
This takes the SP about 12 seconds.
45. The LCD/CRT is cleared of text/logos.
46. The Green LED on the probe is started in a blinking pattern.
47. Now the Tymp template screen is drawn, the menu is drawn and enabled, key-
board is enabled and the system should be idle in the Tymp test mode. Soft and
Hard Keys are now active – user can navigate and run tests.
Grason-Stadler
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